Updated on 2024/04/17

写真a

 
SAITO, Nagahiro
 
Organization
Institutes of Innovation for Future Society Professor
Graduate School of Engineering Professor
Graduate School
Graduate School of Engineering
Title
Professor
Contact information
メールアドレス
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Degree 1

  1. 博士(工学) ( 2000.3   早稲田大学 ) 

Research Interests 7

  1. Reaction Analysis

  2. Graphene

  3. Catalyst

  4. Solution Plasma

  5. Fuel Cell Battery

  6. Secondary Battery

  7. graphite

Research Areas 8

  1. Nanotechnology/Materials / Nanomaterials

  2. Nanotechnology/Materials / Fundamental physical chemistry  / Physical Chemistry

  3. Energy Engineering / Applied plasma science

  4. Nanotechnology/Materials / Nanometer-scale chemistry

  5. Nanotechnology/Materials / Nanostructural physics

  6. Nanotechnology/Materials / Thin film/surface and interfacial physical properties  / Functional Materials/Device

  7. Nanotechnology/Materials / Composite materials and interfaces  / Material Processing/Treatment

  8. Nanotechnology/Materials / Metals production and resources production

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Current Research Project and SDGs 6

  1. カーボンデータベースとインフォマティックス

  2. 高性能二次電池の開発

  3. 水素社会のための燃料電池開発

  4. レドックス電池の開発

  5. 超軽量ハイエントロピー合の開発

  6. ソリューションプラズマによる水処理

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Research History 13

  1. Nagoya University   Department of Chemical Systems Engineering, Graduated School of Engineering   Professor

    2017.4

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    Country:Japan

  2. Nagoya University   Department of Chemical Systems Engineering, Graduated School of Engineering   Professor

    2017.4

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  3. Institute for Innovation for Future Society   Professor

    2014.4

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    Country:Japan

  4. Nagoya University   Administrative Support Organizations Headquarters for Industry, Academia and Government Cooperation

    2012.10 - 2016.3

  5. Nagoya University

    2012.4 - 2016.3

  6. Nagoya University   EcoTopia Science Institute Nano-Material Science Research Division

    2011.7 - 2017.3

  7. Nagoya University   Graduate School of Engineering Department of Materials,Physics and Energy Engineering Engineering of Structural Materials in Ultimate States

    2011.7 - 2017.3

  8. Nagoya University, Green Mobility Research Center, Professor

    2011.7 - 2016.3

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    Country:Japan

  9. EcoTopia Science Institute/Professor

    2009.4 - 2011.6

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    Country:Japan

  10. 名古屋大学工学研究科物質制御工学専攻・准教授

    2004.3 - 2009.3

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    Country:Japan

  11. 名古屋大学工学研究科リサーチアソシエイト

    2000.10 - 2004.3

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    Country:Japan

  12. 早稲田大学理工学部・助手

    2000.4 - 2000.9

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    Country:Japan

  13. 日本学術振興会・特別研究員

    1997.4 - 2000.3

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    Country:Japan

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Education 4

  1. Waseda University   Graduate School, Division of Science and Engineering

    - 2000.3

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    Country: Japan

  2. Waseda University   Graduate School, Division of Science and Engineering

    - 2000.3

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    Country: Japan

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  3. Waseda University   Graduate School, Division of Science and Engineering

    - 1997.3

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    Country: Japan

  4. Waseda University   Faculty of Science and Engineering

    1991.4 - 1995.3

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    Country: Japan

Professional Memberships 7

  1. 表面技術協会   理事(国際担当)

    2004.4

  2. 日本MRS   常任理事

    2008.4 - 2009.3

  3. The Surface Science of Japan

    2006.4

  4. 日本応用物理学会

  5. The Chemical Soceity of Japan

  6. 資源素材学会   評議委員

    2016.4

  7. 日本金属学会

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Committee Memberships 1

  1. 日本学術振興会産学協力研究第183委員会委員会   運営幹事  

    2010.12   

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Awards 33

  1. Excellence Award of Poster Presentation

    2011.1   The 12th International Symposium on Eco-materials Processing and Design  

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    Country:Thailand

  2. Excellence Award of Poster Presentation

    2011.1   The 12th International Symposium on Eco-materials Processing and Design  

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    Award type:Award from international society, conference, symposium, etc.  Country:Thailand

  3. Excellence Award of Poster Presentation

    2011.1   The 12th International Symposium on Eco-materials Processing and Design  

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    Award type:International academic award (Japan or overseas)  Country:Thailand

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  4. ASIA-PACIFIC INTERFINISH 2010 1st Prize Poster Winner

    2010.10   ASIA-PACIFIC INTERFINISH 2010  

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    Country:Singapore

  5. ASIA-PACIFIC INTERFINISH 2010 1st Prize Poster Winner

    2010.10   ASIA-PACIFIC INTERFINISH 2010  

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    Award type:Award from international society, conference, symposium, etc.  Country:Singapore

  6. 17th Iketani ConferenceThe Doyama Symposium on Advanced Material・Doyama Awards

    2007.9   日本MRS  

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    Country:Japan

  7. 17th Iketani ConferenceThe Doyama Symposium on Advanced Material・Doyama Awards

    2007.9   日本MRS  

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    Award type:Award from international society, conference, symposium, etc.  Country:Japan

  8. The Symposium on Electronic Materials and Processing on occasion of IUMRS-ICA-2006 Best Paper Award

    2006.12   IUMRS-ICA-2006  

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    Country:Japan

  9. 平成18年度表面技術若手研究者・技術者研究交流発表会 若手奨励賞

    2006.12   表面技術協会  

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    Country:Japan

  10. The Symposium on Electronic Materials and Processing on occasion of IUMRS-ICA-2006 Best Paper Award

    2006.12   IUMRS-ICA-2006  

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    Award type:Award from international society, conference, symposium, etc.  Country:Japan

  11. 平成18年度表面技術若手研究者・技術者研究交流発表会 若手奨励賞

    2006.12   表面技術協会  

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    Award type:Award from international society, conference, symposium, etc.  Country:Japan

  12. 日本金属学会2006年秋期大会優秀ポスター賞

    2006.9   日本金属学会  

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    Country:Japan

  13. 日本金属学会2006年秋期大会優秀ポスター賞

    2006.9   日本金属学会  

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    Award type:Award from international society, conference, symposium, etc.  Country:Japan

  14. 表面技術協会第109回講演大会: 第10回表面技術協会学術奨励講演賞

    2006.3   表面技術協会  

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    Country:Japan

  15. 表面技術協会第109回講演大会: 第10回表面技術協会学術奨励講演賞

    2006.3   表面技術協会  

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    Award type:Award from international society, conference, symposium, etc.  Country:Japan

  16. 表面技術協会・中部支部若手講演奨励賞

    2005.12   表面技術協会  

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    Country:Japan

  17. 第16回日本MRS学術シンポジウム奨励賞

    2005.12   日本MRS  

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    Country:Japan

  18. 表面技術協会・中部支部若手講演奨励賞

    2005.12   表面技術協会  

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    Award type:Award from international society, conference, symposium, etc.  Country:Japan

  19. 第16回日本MRS学術シンポジウム奨励賞

    2005.12   日本MRS  

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    Award type:Award from international society, conference, symposium, etc.  Country:Japan

  20. 表面技術協会第107回講演大会: 第9回表面技術協会学術奨励講演賞

    2005.3   表面技術協会  

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    Country:Japan

  21. 表面技術協会第107回講演大会: 第9回表面技術協会学術奨励講演賞

    2005.3   表面技術協会  

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    Award type:Award from international society, conference, symposium, etc.  Country:Japan

  22. 第15回日本MRS学術シンポジウム: 第15回日本MRS学術シンポジウム奨励賞

    2004.12   日本MRS  

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    Country:Japan

  23. 第15回日本MRS学術シンポジウム: 第15回日本MRS学術シンポジウム奨励賞

    2004.12   日本MRS  

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    Award type:Award from international society, conference, symposium, etc.  Country:Japan

  24. 日本金属学会2004年秋季(第135回)大会: 第3回日本金属学会優秀ポスター賞

    2004.9   日本金属学会  

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    Country:Japan

  25. 日本金属学会2004年秋季(第135回)大会: 第3回日本金属学会優秀ポスター賞

    2004.9   日本金属学会  

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    Award type:Award from international society, conference, symposium, etc.  Country:Japan

  26. 平成16年度表面技術若手研究者・技術者研究交流発表会: 若手奨励賞

    2003.12   表面技術協会  

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    Country:Japan

  27. 平成16年度表面技術若手研究者・技術者研究交流発表会: 若手奨励賞

    2003.12   表面技術協会  

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    Award type:Award from international society, conference, symposium, etc.  Country:Japan

  28. 表面技術協会第107回講演大会: 第9回学術奨励講演賞

    2003.3   表面技術協会  

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    Country:Japan

  29. 表面技術協会第107回講演大会: 第9回学術奨励講演賞

    2003.3   表面技術協会  

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    Award type:Award from international society, conference, symposium, etc.  Country:Japan

  30. 表面技術協会第105回講演大会:第8回学術奨励講演賞

    2002.3   表面技術協会  

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    Country:Japan

  31. 表面技術協会第105回講演大会:第8回学術奨励講演賞

    2002.3   表面技術協会  

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    Award type:Award from international society, conference, symposium, etc.  Country:Japan

  32. 日本MRS第13回学術講演奨励賞

    2001.12   日本MRS  

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    Country:Japan

  33. 日本MRS第13回学術講演奨励賞

    2001.12   日本MRS  

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    Award type:Award from international society, conference, symposium, etc.  Country:Japan

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Papers 355

  1. Accelerated Capacity and Cycling Performance via Facile Instantaneous Precipitation Induced Amorphization for Lithium-Ion Batteries Reviewed International coauthorship

    Yang W., Huang J., Zhang Y., Saito N., Zhang Z., Yang L.

    Small Methods   Vol. 7 ( 11 )   2023.11

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Small Methods  

    Conversion-alloying anodes have garnered escalating attention with high theoretical capacity, however, they are seriously hindered by large volume distortion and capacity fading. To counter, structural modification needs more exploration. Herein, advantageous structure and high-performance are realized in new amorphous PbSb2O6 (PSO-a) nanosphere via facile instantaneous precipitation induced amorphization; conversion-alloying mechanism endows it with prominent lithium-storage capability; nanostructure can shorten ion-transfer distance and accommodate volume change outside the bulk of PSO-a; and loosely-stacked isotropic amorphous structure can enhance kinetics both at electrode/electrolyte interfaces and in the bulk. Volume change is synergistically stabilized from within to outside the bulk, leading to accelerated capacity and cycling. As expected, when employed in half-cells with 1 m LiPF6 in ethylene carbonate/diethyl carbonate/dimethyl carbonate/fluoroethylene carbonate (3:3:3:1 by mass) as electrolyte, glass microfiber filter as separator, and pure lithium foil as counter electrode, it realizes eminent performance with high specific capacity of 1512.6 mA h g−1 at 0.1 A g−1 and 755.1 mA h g−1 after 1000 cycles at 3 A g−1. To the best of the authors' knowledge, this is the first time PbSb2O6 is utilized as high-performance anode for lithium-ion batteries. Furthermore, this facile strategy provides a promising direction for high-performance amorphous anode material.

    DOI: 10.1002/smtd.202300691

    Scopus

  2. Correlation function of specific capacity and electrical conductivity on carbon materials by multivariate analysis Reviewed

    Moon J., Yun H., Ukai J., Chokradjaroen C., Thiangtham S., Hashimoto T., Kim K., Sawada Y., Saito N.

    Carbon   Vol. 215   2023.11

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    Authorship:Last author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Carbon  

    An attention to a Li ion battery for electric vehicles has been attracted, but there are two huge problems: a short mileage and slow charging speed. Therefore, it is required to improve the specific capacity and electrical conductivity of the carbon material used for an anode and a conductive agent. To solve these problems, this study organized correlation analysis with descriptor vectors by collecting experimental properties including capacity and conductivity from 21 various types of carbon materials. Focusing on the flux of Li ion, it was found that the capacity was dependent on the intercalation of Li ions, which lead to propose the correlation equation based on the Hill equation. Furthermore, the intercalation occurred at the edge of basal plane lead an increase of the width of the gap between two graphene layers, followed by a diffusion through the basal plane, finally the expanded gap recovered its original width. Also, it was found that the variables which are sensitive to the conductivity are largely dependent on the defects and especially the number of graphene layers around the surface, which proposed a correlation equation that can predict the capacity and conductivity. To validate these functions, we checked the effectiveness of it with both experimental data from 27 previous studies and statistical method. As a result, it was confirmed enough to predict them. Finally, a candidate structure for improving the battery performance was proposed, thus our study aims to guide the exploration of electrode materials for LIBs.

    DOI: 10.1016/j.carbon.2023.118479

    Scopus

  3. Search for stable host materials as low-voltage anodes for lithium-ion batteries: A mini-review Reviewed International coauthorship

    Zhang Y., Huang J., Saito N., Zhang Z., Yang L., Hirano S.i.

    Energy Storage Materials   Vol. 55   page: 364 - 387   2023.1

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Energy Storage Materials  

    The explosive demand for lithium-ion batteries (LIBs) in electric vehicles, portable electronics, and smart grids has spurred extensive research in recent years. The key to essential advances in LIBs depends on the search for stable host electrode materials with desirable energy and power densities. In the development of emerging stable host anode materials, the operating potential is an overlooked but crucial parameter because it deeply influences the energy, power, and safety of batteries. The ideal potential should not be too close to the lithium deposition potential like graphite (0.1 V vs. Li+/Li) which would trigger the formation of lithium dendrites under high rates, nor should be too high like spinel Li4Ti5O12 (> 1.5 V vs. Li+/Li) which compromises the batteries’ power and energy density. This mini-review firstly gives an account of several types of titanium-based and vanadium-based compounds as stable host anodes with the average operating potentials around or below 1 V vs. Li+/Li. The mechanisms for stable lithium storage and the origins of the low operating potentials are discussed by combining various characterization technologies. The key barriers and corresponding approaches are summarized for progressive electrochemical performance. Furthermore, several concise perspectives and challenges aiming at further theoretical prediction and practical application are provided.

    DOI: 10.1016/j.ensm.2022.11.030

    Scopus

  4. Nanoscale advanced carbons as an anode for lithium-ion battery Reviewed International coauthorship

    Naraprawatphong R., Chokradjaroen C., Thiangtham S., Yang L., Saito N.

    Materials Today Advances   Vol. 16   2022.12

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    Authorship:Last author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Materials Today Advances  

    Nanoscale advanced carbons, including carbon nanotube, graphene, carbon nanosphere, porous carbon, and their derivatives, are represented as distinct types of material generate in various forms, structure dimensions, and properties. They feature a large specific surface area, excellent conductivity, high mechanical properties, tunable chemical functionality, and a broad potential window, which essentially require for lithium-ion battery systems. The nanoscale advanced carbons have been intensively researched and developed as a negative electrode component to improve battery performance. This review deliberately discusses structures, main properties, and synthesis methods that are directly related to the physical properties and chemical behaviors of the nanoscale advanced carbons. Moreover, currently good candidates for anode material for lithium-ion batteries were summarized. The importance of the primary function and the synergistic effect of nanoscale advanced carbons with active electrode species is emphasized. The systematic information from this review provides a promising tool that represents an essential reference for selecting anode electrode materials and designing the next generation of advanced lithium-ion batteries.

    DOI: 10.1016/j.mtadv.2022.100290

    Scopus

  5. Saccharide-originated fluorescent carbon dots synthesized by in-liquid plasma with controlled orderliness of carbon core through precursor alteration for selective and rapid metal ion detection Reviewed International coauthorship

    Treepet S., Chokradjaroen C., Kim K., Saito N., Watthanaphanit A.

    Materials Today Chemistry   Vol. 26   2022.12

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Materials Today Chemistry  

    Carbon dots (CDs) have grown interested in replacing metal-based quantum dots due to their fluorescent properties with low toxicity. The green synthesis, therefore, represents a contribution to this research field. Here, we demonstrate the synthesis of CDs from simple saccharides, including fructose, glucose, and sucrose, using an eco-friendly method—solution plasma (SP)—by applying plasma in the aqueous solution of the precursor. Variations and characterizations are conducted to understand the role or influence of each synthesis parameter, i.e. saccharide precursor's molecular structure, solution pH (2, 5, and 8), and post-treatment method (freeze-drying and heat-drying), in the materials' structure and fluorescent properties. Blue light-emitting CDs are prepared from all precursors of pH 5 and 8 through SP, followed by heat-drying. Results show that SP is responsible for the carbon core formation, and thus the precursor type affects the carbon core's orderliness. Heat-drying causes oxidation on the CDs' surface, whereby OH functional groups change to C=O. Among all samples, the CDs synthesized from fructose at pH 5 (Fru-CDs-5) perform the best photoluminescence property, having the highest quantum yield (QY) of 9.16% and exhibiting an outstanding ability to detect Fe3+ ions. This is the first attempt to evince the potential use of SP to synthesize CDs from natural carbon sources and obtain CDs exhibiting superior fluorescence properties without any doping and complex synthesis steps. In addition to offering a new synthetic approach, this work specifies the role of the SP and the effect of the saccharide's molecular structure, which is the most relevant synthesis parameters mandatory to obtain tailored CDs with precise control.

    DOI: 10.1016/j.mtchem.2022.101139

    Scopus

  6. Graphitic N-doped graphene via solution plasma with a single dielectric barrier Reviewed

    Niu J., Chokradjaroen C., Saito N.

    Carbon   Vol. 199   page: 347 - 356   2022.10

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Carbon  

    Graphitic nitrogen-doped graphene (g-NG) with significantly high nitrogen content, i.e., 18.79 at.%, could be produced by the electrical discharge in liquid, so-called “solution plasma”, with a single dielectric barrier. The proposed system could reduce the excessive current, resulting in stabilizing the glow plasma and maintaining the overall temperature. It could promote the preservation of nitrogen atoms from evaporation during the synthesis process and the formation of a graphitic carbon framework. Moreover, the influence of the precursors, i.e., six-membered ring organic molecules with and without the substitution of nitrogen atoms and the nitrogen-based functional groups, was also investigated to provide the guideline for the synthesis of g-NG via this proposed method. The substitution of nitrogen atoms in the benzene ring could be used to synthesize g-NG with higher nitrogen dopants, compared to the benzene ring with only nitrogen-based functional groups.

    DOI: 10.1016/j.carbon.2022.08.032

    Scopus

  7. First-principles studies of enhanced oxygen reduction reactions on graphene- and nitrogen-doped graphene-coated platinum surfaces

    Nam H.N., Phung Q.M., Choeichom P., Yamauchi Y., Saito N.

    Physical Chemistry Chemical Physics   Vol. 26 ( 14 ) page: 10711 - 10722   2024.3

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Physical Chemistry Chemical Physics  

    Developing innovative platinum-based electrocatalysts and enhancing their efficiency are crucial for advancing high-performance fuel cell technology. In this study, we employed DFT calculations to provide a theoretical basis for interpreting the impact of graphene coatings on various Pt surfaces on oxygen reduction reaction (ORR) catalytic activity, which are currently applied as protective layers in experiments. We comprehensively assess the geometric and electronic properties of Pt(100), Pt(110), and Pt(111) surfaces in comparison to their graphene-coated counterparts, revealing different adsorption behaviors of O2 across these surfaces. The ORR mechanisms on different Pt surfaces show distinct rate-determining steps, with Pt(111) showing the highest ORR activity, followed by Pt(110) and Pt(100). Graphene coatings play a key role in enhancing charge transfer from the surface, resulting in modifications of O2 adsorption. Despite influencing ORR kinetics, these graphene-coated surfaces demonstrate competitive catalytic activity compared to their bare counterparts. Notably, Pt(111) with a graphene coating exhibits the lowest activation energy among graphene-coated surfaces. Our calculations also suggest that the ORR can occur directly on non-defective Pt@graphene surfaces rather than being restricted to exposed Pt centers due to point defects on graphene. Furthermore, our work highlights the potential of nitrogen doping onto the Pt(111)@C surface to further enhance ORR activity. This finding positions nitrogen-doped Pt@C as a promising electrocatalyst for advancing electrochemical technologies.

    DOI: 10.1039/d4cp00269e

    Scopus

  8. Nanoarchitectonics Solution Plasma Polymerization of Amino-Rich Carbon Nanosorbents for Use in Enhanced Fluoride Removal Reviewed International coauthorship

    Tipplook M., Tanaka H., Sudare T., Hagio T., Saito N., Teshima K.

    ACS Applied Materials and Interfaces   Vol. 16 ( 6 ) page: 7038 - 7046   2024.2

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    Authorship:Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:ACS Applied Materials and Interfaces  

    Amino-functionalized carbon (NH2C) is an effective adsorbent in removing pollutants from contaminated water because of its high specific surface area and electrical charge. In the conventional preparation method, the introduction of amino groups onto the carbon surface is limited, resulting in low pollutant adsorption. Herein, we present simultaneous carbonization and amination to form NH2C via electrical discharge of nonequilibrium plasma, and the resultant material is applied as an effective adsorbent in fluoride removal. The simultaneous process introduces numerous amino groups into the carbon framework, enhancing the adsorption efficiency. The fluoride adsorption capacity is approximately 121.12 mg g-1, which is several times higher than those reported in previous studies. Furthermore, computational modeling is performed to yield deeper mechanistic insights into the molecular-level adsorption behavior. These data are useful in designing and synthesizing advanced materials for applications in water remediation.

    DOI: 10.1021/acsami.3c15172

    Scopus

  9. Synthesis of crown-ether-embedded graphene by the solution plasma Reviewed International coauthorship

    Kim H.m., Saito N., Kim D.w.

    Carbon   Vol. 216   2024.1

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    Authorship:Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Carbon  

    Crown ethers consisting of several ether linkages (R–O–R′) have been attracting attention in the fields of inorganic and organic chemistry, attributed to their cavity sizes and superior cation selectivity. However, they exhibit comparatively low selectivity and ion-binding affinities due to their structural flexibility. Recent studies have shown that crown ethers rigidly formed within 2D matrices, e.g., graphene, exhibit enhanced binding energy and selectivity. However, most of these studies were based on computational modeling and simulations. In this study, the synthesis of crown-ether-embedded graphene was attempted for the first time by the solution plasma process (SPP). Crown-ether-embedded graphene was successfully synthesized through C–H activation and polymerization reactions between as-produced intermediates (i.e., polycyclic aromatic hydrocarbons, including multiply fused benzene rings) and activated cation radicals. Structural and chemical analyses were conducted to verify the existence of the crown ether structure (cyclic ether, C–O–C) in the carbon matrix, and a 2D graphene structure with a cavity originating from the crown ether was observed by transmission electron microscopy analysis. Moreover, adsorption test confirmed successful synthesis of crown ether-embedded graphene with ordered cavity size. We believe that the proposed synthesis approach for crown ether-embedded graphene will be valuable for a wide range of applications, such as ion-selective membrane applications and waste cleanup.

    DOI: 10.1016/j.carbon.2023.118578

    Scopus

  10. A solid-solution approach for high frequency 3-dimensional isotropic negative-refractive-index metamaterials based on microwave ceramics International coauthorship

    Chang Q., Wang Z., Liu X., Saito N., Fan T.

    Ceramics International   Vol. 50 ( 1 ) page: 772 - 780   2024.1

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Ceramics International  

    Negative refraction has yielded valuable insights and solutions in electromagnetics. However, progress in this field has been hindered primarily by implementation challenges, including the limited availability of raw materials and assembly difficulties, particularly at high frequencies. In this paper, a novel flexible self-assembly method was proposed, through which a controllable solid solution of close-packed structures can be attained. By integrating the flexible self-assembly method with an all-dielectric left-handed material structure, a negative-refractive-index metamaterial (NRIM) model was conceived. Magnetism is not a prerequisite under this scheme; therefore, a demonstration based on a microwave dielectric ceramic was proposed, wherein two subdivisions of close-packed structures were studied. Analysis of the field distribution and electromagnetic eigenmodes using finite element analysis revealed a negative refraction band at around 20 GHz, with a relative bandwidth of 4.2%. The analysis of dispersion behavior verified spatial isotropism in the NRIM. In summary, the designed passive NRIM only requires moderate dielectrics and is isotropic in three dimensions, thus bearing a high resemblance to natural mediums.

    DOI: 10.1016/j.ceramint.2023.10.158

    Scopus

  11. Regulated Phase Separation in Al–Ti–Cu–Co Alloys through Spark Plasma Sintering Process Reviewed

    Lee S., Chokradjaroen C., Sawada Y., Yoon S., Saito N.

    Materials   Vol. 17 ( 2 )   2024.1

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    Authorship:Last author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Materials  

    With the goal of developing lightweight Al-Ti-containing multicomponent alloys with excellent mechanical strength, an Al–Ti–Cu–Co alloy with a phase-separated microstructure was prepared. The granulometry of metal particles was reduced using planetary ball milling. The particle size of the metal powders decreased as the ball milling time increased from 5, 7, to 15 h (i.e., 6.6 ± 6.4, 5.1 ± 4.3, and 3.2 ± 2.1 μm, respectively). The reduction in particle size and the dispersion of metal powders promoted enhanced diffusion during the spark plasma sintering process. This led to the micro-phase separation of the (Cu, Co)2AlTi (L21) phase, and the formation of a Cu-rich phase with embedded nanoscale Ti-rich (B2) precipitates. The Al–Ti–Cu–Co alloys prepared using powder metallurgy through the spark plasma sintering exhibited different hardnesses of 684, 710, and 791 HV, respectively, while maintaining a relatively low density of 5.8–5.9 g/cm3 (<6 g/cm3). The mechanical properties were improved due to a decrease in particle size achieved through increased ball milling time, leading to a finer grain size. The L21 phase, consisting of (Cu, Co)2AlTi, is the site of basic hardness performance, and the Cu-rich phase is the mechanical buffer layer between the L21 and B2 phases. The finer network structure of the Cu-rich phase also suppresses brittle fracture.

    DOI: 10.3390/ma17020304

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  12. Conversion of fructose to 5-hydroxymethylfurfural using solution plasma process Reviewed International coauthorship

    Klanarong N., Saito N., Prasertsung I., Damrongsakkul S.

    Renewable Energy   Vol. 218   2023.12

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    5-hydroxymethylfurfural (HMF), a key building block chemical derived from renewable lignocellulosic biomass, is used to produce a variety of derivatives for the biorefinery industry. In this work, the solution plasma process (SPP) was first applied to convert fructose, a key component from biomass, into HMF. Various conditions that affect fructose conversion and HMF yield were studied, including plasma treatment time (0–300 min), DMSO concentration (0–70%), electrode types (Iron; Fe and tungsten; W), system temperature (70–90 °C) and initial fructose concentration (10 g/L and 25 g/L). SPP was showed to enhance the conversion process to achieve high fructose conversion and HMF yield at the temperature (90 °C) lower than other conventional heating processes. The maximum fructose conversion and HMF yield were achieved at 95% and 76%, respectively at the DMSO concentration of 70% with Fe-electrodes, 90 °C of system temperature, 10 g/L of initial fructose concentration, 22.5 kHz of pulsed frequency and plasma treatment time of 240 min. Sulfuric acid formed from DMSO dissociation and Fe-nanoparticles from electrode erosion could effectively act as catalysts for the dehydration of fructose to HMF. SPP can be a high-potential tool for enhancing HMF production from the dehydration process in BCG economy.

    DOI: 10.1016/j.renene.2023.119299

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  13. Highly durable graphene-encapsulated platinum-based electrocatalyst for oxygen reduction reactions synthesized by solution plasma process Reviewed

    Park J.H., Kim K., Wang X., Huda M., Sawada Y., Matsuo Y., Saito N., Kawasumi M.

    Journal of Power Sources   Vol. 580   2023.10

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    Though expensive platinum (Pt) is used as catalyst for oxygen reduction reaction (ORR) in polymer electrolyte fuel cells (PEFCs), insufficient durability remains as a bottleneck for commercialization of PEFCs. Improving both catalytic performance and durability by graphene encapsulation is an attractive strategy to solve this problem. In this study, graphene-encapsulated PtFe core-shell catalyst is synthesized with dimethyl formamide (DMF) and a pair of Pt and Fe electrodes without using any metal salts by utilizing the solution plasma (SP) process. TEM and EELS results show synthesized PtFe nanoparticles are encapsulated with close to single-layered highly crystallized graphene. Although commercial Pt/C showed significant performance degradation (ECSA −33%, MA −68%) after 50,000 cycles of accelerated durability test (ADT), PtFe core-shell catalyst shows remarkably improved durability (ECSA −13%, MA −19%) while graphene shell clearly remains. The improved durability is more prominent in the single cell test, the decrease in maximum power density after 6000 cycles of ADT was significantly lower as −1.2%, compared to that of Pt/C (−52.1%). This study introduces a novel and attractive catalyst synthesis process by the SP method followed by heat treatments and suggests graphene encapsulation can improve long-term durability of catalyst while maintaining ORR activity.

    DOI: 10.1016/j.jpowsour.2023.233419

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  14. Novel solution plasma synthesis of highly durable carbon shell encapsulated platinum-based cathode catalyst for polymer electrolyte membrane fuel cells Reviewed

    Park J.H., Saito N., Kawasumi M.

    Carbon   Vol. 214   2023.10

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Carbon  

    Developing an effective method for synthesizing high-performance and durable catalysts for the oxygen reduction reaction is of great importance for cost reduction and the wide application of fuel cells. This study presents a simple and effective strategy using a plasma reaction in the liquid phase to synthesize carbon-shell-encapsulated Pt and PtFe catalysts. A carbon-shell-encapsulated PtFe catalyst alloyed with up to 29 at.% Fe exhibits a mass activity of 730 mA·mgpt−1 and a specific activity of 1772 μA cm−1, which are 2.4 and 5 times higher than that of commercial Pt/C, respectively. The carbon shell effectively maintained the low oxidation state of Pt by suppressing the formation of Pt–OH and significantly improved the durability of the catalyst in accelerated durability tests, increasing the gap in mass activity with Pt/C by a factor of up to six after 50,000 cycles. In addition, the decrease in the electrochemical surface area by the carbon shell enabled a more stable 4-electron reaction over a wide potential range. This study may provide fascinating insights into the effect of the carbon shell contributing to the improvement of the catalytic activity and durability of fuel cells as well as the novel plasma-based synthesis strategy of core-shell catalyst.

    DOI: 10.1016/j.carbon.2023.118364

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  15. Preparation of lightweight, high hardness multi-component systems induced by partial oxidation and hard intermetallic phase formation Reviewed

    Lee S., Chokradjaroen C., Sawada Y., Saito N.

    Journal of Materials Research   Vol. 38 ( 18 ) page: 4235 - 4246   2023.9

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    Authorship:Last author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Journal of Materials Research  

    The ternary Mg–Al–Ti and quaternary Mg–Al–Ti–Cu systems were prepared by mechanical alloying in oxygen-lean atmosphere followed by spark plasma sintering. The ternary Mg–Al–Ti and quaternary Mg–Al–Ti–Cu systems which were sintered at 750 °C after 16 h milling showed the highest hardness of 509 and 947 HV with low densities of 2.9 and 3.9 g/cm3, respectively. The decrease in particle size and uniform dispersion of elements through optimization of the MA process induced the formation of uniform composite microstructure after SPS. Moreover, the addition of the fourth element, Cu, showed a significant impact on the improvement in hardness. This result was explained from the perspective of the microstructure and the electronic nature of elements. Our results provide a facile method for synthesizing oxide/metal composites from elemental powders without a separate oxidation process. Graphical abstract: [Figure not available: see fulltext.]

    DOI: 10.1557/s43578-023-01137-z

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  16. Cationic nitrogen-doped graphene coated silver as low-work function electrode for inverted perovskite solar cells Reviewed

    Yokoyama K., Lin H.S., Shui Q.J., Wang X., Saito N., Matsuo Y.

    Applied Physics Express   Vol. 16 ( 8 )   2023.8

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    Interfacial layers (ILs) located between the cathode and electron transport layer (ETL) in inverted perovskite solar cells are commonly required to achieve high-performance devices. Therefore, it is essential to develop excellent IL materials to improve efficiency and stability. This paper introduces the graphene-based IL material, namely cationic nitrogen-doped graphene (CNG), and evaluates its performance on a methylammonium lead iodide (MAPbI3)-type inverted perovskite solar cells. The device with a CNG IL achieved a power conversion efficiency of 13.5%, which is higher than a state-of-the-art reference using bathocuproine IL. Mechanistic studies demonstrated that the CNG IL can (1) efficiently collect electrons from the lowest unoccupied molecular orbital of ETL by lowering the work function of the silver cathode, (2) improve the conductivity of the silver electrode for better electron transfer, and (3) smooth out the interface contact between ETL and cathode to reduce defects in the device. As a result, the CNG IL enhanced the inverted perovskite solar cells performance by simultaneously increasing the open-circuit voltage, short-circuit current density, and fill factor. Moreover, the unencapsulated CNG IL-applied device demonstrated good long-term stability, with 96% efficiency retained over 1000 h in nitrogen atmosphere at room temperature.

    DOI: 10.35848/1882-0786/acea18

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  17. Introducing micropores into carbon nanoparticles synthesized via a solution plasma process by thermal treatment and their charge storage properties in supercapacitors Reviewed International coauthorship

    Thu M.M., Chaiammart N., Jongprateep O., Techapiesancharoenkij R., Thant A.A., Saito N., Panomsuwan G.

    RSC Advances   Vol. 13 ( 24 ) page: 16136 - 16144   2023.6

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:RSC Advances  

    Carbon materials synthesized via a solution plasma process (SPP) have recently shown great potential for various applications. However, they mainly possess a meso-macroporous structure with a lack of micropores, which limits their applications for supercapacitors. Herein, carbon nanoparticles (CNPs) were synthesized from benzene via SPP and then subjected to thermal treatment at different temperatures (400, 600, 800, and 1000 °C) in an argon environment. The CNPs exhibited an amorphous phase and were more graphitized at high treatment temperatures. A small content of tungsten carbide particles was also observed, which were encapsulated in CNPs. An increase in treatment temperature led to an increase in the specific surface area of CNPs from 184 to 260 m2 g−1 through the development of micropores, while their meso-macropore structure remained unchanged. The oxygen content of CNPs decreased from 14.72 to 1.20 atom% as the treatment temperature increased due to the degradation of oxygen functionality. The charge storage properties of CNPs were evaluated for supercapacitor applications by electrochemical measurements using a three-electrode system in 1 M H2SO4 electrolyte. The CNPs treated at low temperatures exhibited an electric double layer and pseudocapacitive behavior due to the presence of quinone groups on the carbon surface. With increasing treatment temperature, the electric double layer behavior became more dominant, while pseudocapacitive behavior was suppressed due to the quinone degradation. Regarding cycling stability, the CNPs treated at high temperatures (with a lack of oxygen functionality) were more stable than those treated at low temperatures. This work highlights a way of introducing micropores into CNPs derived from SPP via thermal treatment, which could be helpful for controlling and adjusting their pore structure for supercapacitor applications.

    DOI: 10.1039/d3ra02314a

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  18. Morphological Evolution of Gold Nanoparticles Synthesized via Solution Plasma Sputtering: Effect of Sodium Chloride Concentration and Storage Time Reviewed International coauthorship

    Chantaramethakul J., Choophun N., Chokradjaroen C., Watthanaphanit A., Saito N., Panomsuwan G.

    Journal of Physical Chemistry C   Vol. 127 ( 6 ) page: 3184 - 3193   2023.2

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    Morphological control of gold nanoparticles (AuNPs) is vital for tuning their optical, chemical, physical, and catalytic properties for desired specific applications. Despite numerous efforts dedicated in recent years, controlling the morphology of AuNPs synthesized via solution plasma sputtering (SPS) remains a challenge, requiring further investigation. Herein, AuNPs were synthesized via SPS in sodium chloride (NaCl) solutions of various concentrations (0.5, 1, 2, and 5 mM). Evolutions of localized surface plasmon resonance and morphology of AuNPs over a 30 day storage period were thoroughly examined using ultraviolet-visible spectroscopy and field-emission transmission electron microscopy. The formation and growth mechanisms of AuNPs during and after synthesis provide more insights into this nascent field. At the initial storage time, AuNPs with chain-like structures were observed at all the NaCl concentrations. Their size tended to increase from 6 to 10 nm with a broader size distribution with increasing NaCl concentration. At a prolonged storage time of 15 days, AuNPs became smaller and more isolated at all NaCl concentrations owing to the oxidative etching effect. After 30 days of storage, the number of Au ions dissolved from etching slowly reduced and grew on the AuNPs, affording increased particle sizes. The interplay between etching and growth processes proceeded until reaching equilibrium. AuNPs exhibited good colloidal stability at low NaCl concentrations (i.e., 0.5, 1, and 2 mM); however, coalescence and sedimentation occurred at a high NaCl concentration of 5 mM owing to a considerable reduction in the electrical double-layer thickness. These results demonstrated that the NaCl concentration and storage time crucially affect the morphological evolution and stability of AuNPs synthesized via SPS.

    DOI: 10.1021/acs.jpcc.2c06474

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  19. A facile and efficient approach for the removal of high concentrations of ammonia nitrogen in wastewater: Liquid-phase plasma treatment Reviewed International coauthorship

    Back S., Saito N., Lee S.

    Journal of Environmental Chemical Engineering   Vol. 11 ( 1 )   2023.2

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Journal of Environmental Chemical Engineering  

    We report the facile and effective liquid-phase plasma treatment (LPPT) approach for removing high concentrations of ammonia nitrogen from wastewater. The effects of the operating parameters, including the pH and temperature, the pulse repetition frequency, the pulse duration, and the reaction time, were investigated to obtain the optimal removal conditions using a simulated wastewater sample. It was found that a higher pulse repetition, a longer pulse duration, and alkaline conditions were favorable for the removal of ammonia nitrogen. Thus, at pH 12, a pulse repetition frequency of 30 kHz, and a pulse duration of 3.0 ?s, the removal efficiency of ammonia nitrogen reached 100% in 25 min during the LPPT. In addition, when isopropanol (IPA) and 1, 4-diazabicyclooctane triethylenediamine (DABCO) were used as scavengers for OH and 1O2, respectively, the removal efficiency of ammonia nitrogen after 25 min decreased from 71.7% to 68.1% in the presence of DABCO and from 71.7% to 62.8% in the presence of IPA. Based on these results, the mechanism of ammonia nitrogen removal was proposed to constitute the collision of accelerated electrons and the oxidation reaction of OH. Moreover, it was confirmed that the LPPT approach was feasible for the removal of ammonia nitrogen from wastewater.

    DOI: 10.1016/j.jece.2022.109075

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  20. Carbon Fibers Prepared via Solution Plasma-Generated Seeds Reviewed

    Romero Valenzuela A.E., Chokradjaroen C., Choeichom P., Wang X., Kim K., Saito N.

    Materials   Vol. 16 ( 3 )   2023.2

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    Authorship:Last author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Materials  

    Carbon fibers are materials with potential applications for CO2 capture due to their porous structure and high surface areas. Nevertheless, controlling their porosity at a microscale remains challenging. The solution plasma (SP) process provides a fast synthesis route for carbon materials when organic precursors are used. During the discharge and formation of carbon materials in solution, a soot product-denominated solution plasma-generated seeds (SPGS) is simultaneously produced at room temperature and atmospheric pressure. Here, we propose a preparation method for carbon fibers with different and distinctive morphologies. The control over the morphology is also demonstrated by the use of different formulations.

    DOI: 10.3390/ma16030906

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  21. Effect on percolation threshold of catalytic layer: Pt/N-Doped graphene shell onto SWCNT for ORR electrode Reviewed

    Dechojarassri D., Wang X., Chae S., Sawada Y., Hashimoto T., Saito N.

    Fuel Cells   Vol. 23 ( 1 ) page: 4 - 14   2023.2

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    Authorship:Last author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Fuel Cells  

    A high-rate oxygen reduction reaction (ORR) is necessary for polymer electrolyte membrane fuel cells (PEMFC). In this work, by using a solution plasma technique, Pt catalytic particles coated with N-doped graphene (Pt-NG) were effectively produced at 25°C. According to transmission electron microscope images, the average diameter of Pt particles was 4 nm, while the graphene layer thickness was less than 1 nm. A catalytic layer of Pt-NG supported on single-walled carbon nanotubes (Pt-NG/SWCNT) was synthesized. Cyclic voltammetry was used to assess the ORR characteristics of Pt-NG/SWCNT catalytic layers. Only at a density of SWCNT to solvent ratio of 0.75 mg ml−1 were the ORR peaks clearly visible. Because of the high resistivity of SWCNT layers, the ORR peaks in other ranges, 0.4 mg ml−1 to 2.0 mg ml−1, were not clearly observed. The effect of SWCNT concentration on conductivity was proven to follow the basic concept of the percolation threshold.

    DOI: 10.1002/fuce.202200020

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  22. Low-potential and high-capacity lithium battery anode based on hierarchical assemblies of Na<inf>2</inf>TiSiO<inf>5</inf> nanotubes Reviewed International coauthorship

    Zhang Y., Huang J., Saito N., Zhang Z., Yang L., Hirano S.i.

    Applied Surface Science   Vol. 604   2022.12

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Applied Surface Science  

    Titanium-based materials such as TiO2 and Li4Ti5O12 are promising candidates for next-generation lithium-ion batteries (LIBs), but the high operating potential and unsatisfactory specific capacity severely restrict the potential application prospects. Li2TiSiO5 as a novel anode has attracted great attention due to its low-potential and high-capacity properties, but the conversion transition of Li2TiSiO5 to Li4SiO4 and TiO during Li+ intercalation and de-intercalation unfavorably affects the structural stability and hinders Li+ transport. Herein, novel cocoon-like microspheres assembled by Na2TiSiO5 nanotubes (NTSO-T), as the substitute of Li2TiSiO5, are facilely synthesized through a hydrothermal reaction. The hierarchical structure could effectively facilitate the Li+ diffusion, reduces internal strain, and enhances structural stability without greatly reducing the tap density. With a low but safe operating potential of 0.75 V, NTSO-T anode exhibits a high reversible capacity of 400 mAh g−1 which exceeds most reported Ti-based anodes, and durable long-cycling performance (capacity retention after 3000 cycles reaches 77%). Most importantly, the rate capability of NTSO-T is significantly enhanced. Kinetic reaction analysis has demonstrated the pseudocapacitive contribution in NTSO-T anode dominates the lithium storage kinetics. In addition, ex situ XRD and Raman analysis reveal a partially reversible conversion mechanism occurring in the framework. The excellent electrochemical performance of NTSO-T provides a promising anode candidate for next-generation LIBs.

    DOI: 10.1016/j.apsusc.2022.154409

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  23. Multi-strategy synergistic in-situ constructed gel electrolyte-binder system for high-performance lithium-ion batteries with Si-based anode Reviewed International coauthorship

    Zhao E., Luo S., Zhang Z., Saito N., Yang L., Hirano S.i.

    Electrochimica Acta   Vol. 434   2022.12

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    Silicon-based material have been considered as the most competitive candidate for next-generation anode in lithium-ion batteries (LIBs) due to its high specific energy density, natural abundance and attractive operating voltage. However, silicon-based anodes generally undergo significant volume changes and structural collapse during cycling, resulting in limited battery lifespan. Herein, a multi-strategy optimized in-situ gel electrolyte-binder system (GEBS) is rationally constructed, and electrochemical performances of the LIBs with Silicon-Graphite (Si-Gr) anodes are systematically evaluated by half-cell and full-cells. The in-situ generated polymer skeleton and improved interfacial compatibility of the GEBS effectively preserve the electrode structural integrity. Compared with the commercial liquid electrolyte, the volume change of the anode cycled with GEBS is suppressed from 208 % to 126 %. Benefiting from these merits, the full-cell with LiFePO4 cathode displays stable cycling stability with the capacity retention of 96.8 % after 260 cycles. Besides, the reversible capacity of the LiNi0.6Co0.2Mn0.2O2║Si-Gr full-cell is as high as 121.7 mAh g−1 after 200 cycles (capacity retention of 85.1 %), and the GEBS also exhibits obvious dominance at 55°C. This contribution effectively integrates multiple optimization strategies for Si-based anode and provides a feasible solution to address the challenge of its practical application in LIBs.

    DOI: 10.1016/j.electacta.2022.141299

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  24. Remediation of water contaminated with polycyclic aromatic hydrocarbons using liquid phase plasma: Influence of electrical discharge condition

    Kim U.J., Saito N., Lee S.H.

    Frontiers in Marine Science   Vol. 9   2022.11

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Frontiers in Marine Science  

    Although the number of vessels with exhaust gas cleaning systems (EGCSs or scrubbers) has sharply increased to comply with strengthened regulations for marine environment, secondary pollutions are caused by discharged polycyclic aromatic hydrocarbons (PAHs) from scrubber effluent. Here, liquid-phase plasma (LPP) is employed to remediate water contaminated with PAHs. The increased frequency and pulse width enhanced the degradation efficiency, and 93.3, 90.7, 86.0, and 85.4% for naphthalene (Nap), acenaphthene (Ace), fluorene (Flu), and phenanthrene (Phe), respectively, are degraded at a frequency of 30 kHz and pulse width of 3 μs in 10 min. Considering physical condition of the plasma, long pulse width accelerated electrons, leading to increased generation of active species from intensified collision between electrons and surrounding molecules. Conversely, high frequency decelerated electrons due to the excessive changes in the polarity. However, the increased number of plasma discharges results in the generation of numerous active species. Generations of •OH and O radicals are confirmed by optical emission spectrometry and electron paramagnetic resonance. In addition, changes in functional groups which are corresponding to hydroxyl and oxygen groups are identified by Fourier transform infrared spectroscopy. Total PAHs in real scrubber are reduced from 1.1 to 0.4 μgL-1 with degradation efficiency of 63.6% after 10 min of LPP treatment. This study suggests LPP can be a promising method to protect diverse aqueous environments and provides optimal electrical discharge condition for degradation of organic pollutants.

    DOI: 10.3389/fmars.2022.1033962

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  25. Hierarchical Porous Carbon Fibers Synthesized by Solution-Plasma-Generated Soot Deposition and Their CO<inf>2</inf> Adsorption Capacity

    Romero Valenzuela A.E., Chokradjaroen C., Thiangtham S., Saito N.

    Coatings   Vol. 12 ( 11 )   2022.11

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    Global warming caused by CO2 emissions is a major environmental problem. Thus, the development of materials with innovative architectures that approach the CO2 problem is a necessity. In this study, hierarchical porous carbon fibers (HCFs) were synthesized by a chemical deposition process that operates at 400 °C and uses solution-plasma-generated soot (PGS) as a carbon precursor. Subsequently, the CO2 adsorption capacity of the synthesized material was evaluated. The HCFs showed enhanced surface areas and networks of micropores and mesopores. Moreover, the HCFs were post treated by metal etching and KOH activation. The post treated HCFs achieved a CO2 uptake of 0.8 mmol g−1 at 273 K, which was superior to the simultaneously produced solution plasma carbon (SPC), which has a CO2 uptake of 0.2 mmol g−1.

    DOI: 10.3390/coatings12111620

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  26. Plasma–Solution Junction for the Formation of Carbon Material

    Niu J., Chokradjaroen C., Sawada Y., Wang X., Saito N.

    Coatings   Vol. 12 ( 11 )   2022.11

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    The solution plasma process (SPP) can provide a low-temperature reaction field, leading to an effective synthesis of N-doped graphene with a high N content and well-structured planar structure. However, the interactions at the plasma–solution interface have not been well understood; therefore, it needs to be urgently explored to achieve the modulation of the SPP. Here, to address the knowledge gap, we experimentally determined the physical parameters of the spital distribution in the plasma phase, plasma–gas phase, and gas–liquid phase of the SPP by the Langmuir probe system with modification. Based on the assumption that plasma can act similarly to semiconductors with the Fermi level above the vacuum level, an energy band diagram of the plasma–solution junction could be proposed for the first time. It was observed that the Fermi level of the organic molecule could determine the magnitude of electron temperature in plasma, i.e., benzene produced the highest electron temperature, followed by phenol, toluene, and aniline. Finally, we found that the electron temperature at the interface could induce quenching, leading to the formation of multilayer large-size-domain carbon products. It provided significant evidence for achieving nonequilibrium plasma modulation of carbon nanomaterial synthesis.

    DOI: 10.3390/coatings12111607

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  27. Layered Perovskite Lithium Yttrium Titanate as a Low-Potential and Ultrahigh-Rate Anode for Lithium-Ion Batteries

    Zhang Y., Huang J., Saito N., Yang X., Zhang Z., Yang L., Hirano S.i.

    Advanced Energy Materials   Vol. 12 ( 31 )   2022.8

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    Graphite, as the dominant anode for commercial lithium-ion batteries, features sluggish electrochemical kinetics and low potential close to lithium deposition, leading to poor rate capability and safety issues. Although titanium-based oxides have received considerable attention, each alternative demonstrates unsatisfactory trade-offs between capacity, operating potential, rate capability, and lifespan. Here, submicrometer-sized lithium yttrium titanate (LYTO) is synthesized through facile sol–gel and ion-exchange reactions. With an average operating potential of 0.3 V versus Li+/Li, the LYTO anode demonstrates a high specific capacity of 236 mAh g–1 and durable cycling performance of 98% capacity retention after 3000 cycles. Impressively, without additional modification, a high-rate capability is achieved under a current density range from 0.5 C to 100 C (1 C = 200 mA g–1), e.g., delivering 112 and 87 mAh g–1 at 60 C and 100 C, respectively. Comprehensive characterizations and computational simulations reveal reversible solid-solution reactions occurring in the LYTO framework with little lattice change and fast 2D Li+ mobility achieved due to a low diffusion energy barrier. After incorporation with a LiFePO4 cathode, the energy density of the as-fabricated full cell reaches 2.4 times that of Li4Ti5O12/LiFePO4 full cell. The double characteristics of LYTO provide a fresh identification for high-performance anodes.

    DOI: 10.1002/aenm.202200922

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  28. A non-flammable, flexible and UV-cured gel polymer electrolyte with crosslinked polymer network for dendrite-suppressing lithium metal batteries

    Gu Y., Yang L., Luo S., Zhao E., Saito N.

    Ionics   Vol. 28 ( 8 ) page: 3743 - 3759   2022.8

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    A flexible, non-flammable gel polymer electrolyte (GPE) was synthesized by combining UV-cured polymerization of ethoxylated trimethylolpropane triacrylate (ETPTA) within the framework of glass fiber (GF) membrane. Non-flammable hydrofluoroether (1,1,2,2-tetrafluoroethyl 2,2,3,3-tetrafluoropropyl ether, FEPE) and high flash point solvent (fluoroethylene carbonate, FEC) were employed as plasticizers for GPE-FEC/FEPE (60:40) to promote the safety of electrolyte and improve the compatibility with lithium metal anode. Non-flammable GPE-FEC/FEPE (60:40) possessed high safety level, high ionic conductivity (1.57 mS cm−1 at 30 °C), excellent oxidation stability (4.6 V vs. Li/Li+), high lithium-ion transference number (0.71) and good thermal stability (120 °C). After 1000 h test, Li/GPE-FEC/FEPE (60:40)/Li displayed better compatibility with lithium metal electrode compared with commercial liquid electrolyte. The test of Li/LFP cells showed that the safe GPE-FEC/FEPE (60:40) had excellent cycling performance at room temperature and elevated temperature. After 1000 cycles at 2 C and room temperature, the capacity retention was as high as 88.4%. XPS spectra proved that GPE-FEC/FEPE (60:40) was beneficial to promote the formation of LiF-rich SEI film on the surface of lithium metal anode, which could effectively inhibit the growth of lithium dendrites.

    DOI: 10.1007/s11581-022-04621-4

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  29. Nitrogen-doped 3D porous graphene coupled with densely distributed CoO<inf>x</inf> nanoparticles for efficient multifunctional electrocatalysis and Zn-Air battery

    Zhao Y., Wang X., Guo X., Shi N., Cheng D., Zhou H., Saito N., Fan T.

    Electrochimica Acta   Vol. 420   2022.7

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    Highly efficient and low-cost multifunctional electrocatalysts play a crucial role in energy storage and conversion systems. Herein, a new strategy is developed based on a structured precursor to design and fabricate a hierarchical porous nitrogen doped graphene coupled with densely distributed CoO/Co3O4 heterostructure that exhibits outstanding multifunctional activities. With rational hybridization of graphene and bimetallic nanoparticles, the as-obtained NGPC@CoOx integrated densely distributed CoO/Co3O4 active nanoparticles to 3D interconnected hierarchical N-doped graphene mesh, which gives rise to a multifaceted capability for electron/ion transfer and redox catalyzing. The NGPC@CoOx possesses excellent durability with a superior E1/2 of 0.86 V for oxygen reduction reaction (ORR), and a relatively low potential for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) of 1.61 V, and -0.162 V at 10 mA cm−2, respectively. Additionally, the superior cycling durability and high power density of NGPC@CoOx-based zinc-air batteries (184.4 mW cm−2) further confirm the potential application of prototype devices. This work introduces a new perspective on developing efficient multifunctional electrocatalysts with a well-designed 3D structure anchored with densely distributed nanoparticles towards energy storage and conversion technologies.

    DOI: 10.1016/j.electacta.2022.140432

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  30. Fundamentals of solution plasma for advanced materials synthesis Reviewed International coauthorship

    Chokradjaroen C., Wang X., Niu J., Fan T., Saito N.

    Materials Today Advances   Vol. 14   2022.6

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    Authorship:Last author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Materials Today Advances  

    Solution plasma is an atmospheric nonequilibrium plasma generated by electrical discharge in liquid phase at room temperature. The plasma configurations, solutions, electrode materials, as well as the characteristics of the power supply can be easily tuned. Due to these features of the solution plasma, various sizes, shapes, compositions of products can be controlled, leading to the effective utilization in several applications, such as a novel catalyst for energy conversion. To accomplish the use of solution plasma as a promising tool for the synthesis and modification of advanced materials, fundamentals and applied knowledge related to the solution plasma should be reviewed and discussed. Therefore, in this review, fundamentals of plasma in liquid are explained relating to the solution plasma, and detailed advanced applications of solution plasma are organized. It is expected to give powerful knowledge to guide the researchers in designing plasma conditions and synthesizing catalysts for different applications in the future.

    DOI: 10.1016/j.mtadv.2022.100244

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  31. Design of three-dimensional isotropic negative-refractive-index metamaterials with wideband response based on an effective-medium approach

    Chang Q., Liu X., Wang Z., Saito N., Fan T.

    Applied Physics A: Materials Science and Processing   Vol. 128 ( 5 )   2022.5

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    Negative-refractive-index metamaterials (NRIMs) can provide opportunities for many new applications, but they are difficult to manufacture, especially when forced to work at high frequencies and required to be three-dimensionally isotropic. By integrating an effective-medium approach into all-dielectric left-handed materials (LHMs) and utilizing self-assembly, we developed a method to design three-dimensional NRIMs that can work in high frequencies and are suitable for mass production. The NRIMs are composed of arrays of spheres that are made from artificial media, which are devised under the effective-medium method in advance. Two cases with different close-packed structures were studied for verification purposes. Finite element analysis showed that both cases can achieve negative refraction within 14.5–15.2 GHz (Ku band), which qualifies as wideband. Negative refraction was further confirmed by investigating the resonance mode of units in each model. Dispersion analysis demonstrated isotropism and consistent behaviors in all cases, indicating the robustness of these properties over disorder accompanied by self-assembly. The proposed NRIM model is intrinsically isotropic, three-dimensional, passive, mass-producible, machinable and thus readily applicable.

    DOI: 10.1007/s00339-022-05573-2

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  32. Flexible, solid-state, fiber-network-reinforced composite solid electrolyte for long lifespan solid lithium-sulfurized polyacrylonitrile battery

    Luo S., Zhao E., Gu Y., Saito N., Zhang Z., Yang L., Hirano S.i.

    Nano Research   Vol. 15 ( 4 ) page: 3290 - 3298   2022.4

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    Solid lithium-sulfur batteries (SLSBs) show potential for practical application due to their possibility for high energy density. However, SLSBs still face tough challenges such as the large interface impedance and lithium dendrite formation. Herein, a high-performance SLSB is demonstrated by using a fiber network reinforced Li6.75La3Zr1.75Ta0.25O12 (LLZTO) based composite solid electrolyte (CSE) in combination with sulfurized polyacrylonitrile (SPAN) cathode. The CSE consisting of an electrospun polyimide (PI) film, LLZTO ionically conducting filler and polyacrylonitrile (PAN) matrix, which is named as PI-PAN/LLZTO CSE, possesses high room-temperature ionic conductivity (2.75 × 10−4 S/cm), high Li+ migration number (tLi+) of 0.67 and good interfacial wettability. SPAN is utilized due to its unique electrochemical properties: reasonable electronic conductivity and no polysulfides shuttle effect. The CSE enables a highly stable Li plating/stripping cycle for over 600 h and good rate performance. Moreover, the assembled SLSB exhibits good cycle performance of accomplishing 120 cycles at 0.2 C with the capacity retention of 474 mAh/g, good rate properties and excellent long-term cycling stability with a high capacity retention of 86.49% from 15th to 1,000th cycles at 1.0 C. This work rationalizes our design concept and may guide the future development of SLSBs. [Figure not available: see fulltext.]

    DOI: 10.1007/s12274-021-3981-z

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  33. Solution plasma process for synthesizing polydiacetylene materials: Toward industrial utilization of colorimetric sensors

    Saymung R., Watthanaphanit A., Saito N., Traiphol N., Traiphol R.

    Journal of Industrial and Engineering Chemistry   Vol. 106   page: 243 - 252   2022.2

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    A new route for synthesizing polydiacetylene (PDA) is introduced. Plasma is generated in a liquid matrix through a pair of electrodes, producing the excited atomic or molecular species, radicals, and UV radiation. The products of solution plasma process (SPP) act as initiators to induce polymerization of diacetylene monomers. Our results demonstrate that irreversible thermochromic PDA and reversible thermochromic PDA/Zn2+/ZnO nanocomposite can be effectively synthesized. The addition of ethanol significantly increases the polymerization rate. These PDA materials can be fabricated into paper-based colorimetric sensors for detecting volatile organic solvents, acids, bases, and surfactants. This synthetic pathway could be applied for industrial-scale applications.

    DOI: 10.1016/j.jiec.2021.10.035

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  34. Morphology control of ZnO nanostructures using Zn and W electrodes in solution plasma process

    Kim K., Chae S., Masuda Y., Saito N.

    Materials Letters   Vol. 309   2022.2

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    The morphology of ZnO nanostructures was controlled by the type of electrodes used, without chemical additives in the solution plasma process. Nanorod and nanosheet-type ZnO were synthesized using Zn and W electrodes, respectively. In the solution plasma process, the ZnO nanostructure can be fabricated because of the unique reaction between ions and radicals at the plasma/liquid interface. During this reaction, ions generated from the metal electrode influence the morphology of ZnO by adsorption on the (0 0 1) facet. Zn(OH)42− ions promoted crystal growth in the [0 0 1] direction, resulting in a rod structure. In contrast, the sheet structure was formed owing to the inhibition of growth in the [0 0 1] direction by WO42− ions.

    DOI: 10.1016/j.matlet.2021.131349

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  35. Synthesis of nitrogen-doped carbons from single-source precursors by solution plasma

    Gasidit Panomsuwan, Chayanapat Chokradjaroen, Nagahiro Saito

    Nanomaterials via Single-Source Precursors: Synthesis, Processing and Applications     page: 475 - 505   2022.1

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    Solution plasma processing is a bottom-up synthetic approach that can be employed for directly preparing nitrogen-doped carbons from single-source precursors with in situ nitrogen doping. Research efforts and interest in this topic have gained at a significant pace over the past years. This chapter provides an overview of solution plasma processing and recent progress on the synthesis of nitrogen-doped carbons from single-source precursors using this approach. The chapter starts by introducing the basic fundamentals of solution plasma and how to apply it in the synthesis of nitrogen-doped carbons. The effects of a solution plasma conditions and the type of precursors on the overall properties of nitrogen-doped carbons are summarized based on the important findings reported in the literature. A potential application of nitrogen-doped carbons as metal-free electrocatalysts for oxygen reduction reaction is explained and discussed in brief. At the end of the chapter, the remaining challenges and future prospects are highlighted for use in further studies. This chapter is intended to be generally informative and a useful guide for researchers who are new to this field.

    DOI: 10.1016/B978-0-12-820340-8.00019-8

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    researchmap

  36. Asymmetric Porous and Highly Hydrophilic Sulfonated Cellulose/Biomembrane Functioning as a Separator in a Lithium-Ion Battery

    Thiangtham S., Saito N., Manuspiya H.

    ACS Applied Energy Materials     2022

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    Biomembranes based on sulfonated cellulose (SC) blended with PLA/PBS composites were fabricated with different SC contents into polymer matrices. The obtained membranes were applied as separators in lithium-ion batteries (LIBs). The porosities of SC/biomembranes with 0.5, 1, and 2 wt % SC contents were estimated to be 66.6, 73.4, and 87.7%, respectively, which are significantly greater than that of the Celgard 2400 membrane, a commercial monolayer polypropylene (PP) separator membrane (42.1%). Due to its high porosity, hydrophilicity, and good interfacial compatibility with electrodes, the SC/biomembranes offer high electrolyte uptake and low interfacial resistance, leading to enhanced ionic conductivity. The cell with the 2 wt % SC/biomembrane also exhibited stable cycle performance and improved rate capacity, especially when discharged at the 0.2C rate. A 106 mAh/g capacity retention rate was achieved for a battery with the 2 wt % SC/biomembrane after 100 cycles at the 1C rate; meanwhile, the Celgard 2400 membrane exhibited a capacity of 81 mAh/g. These results show that SC has great innovative potential for use as a biofiller in biomembranes, which is suitable for LIB applications.

    DOI: 10.1021/acsaem.2c00602

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  37. Au nanoparticle-decorated TiO<inf>2</inf>hollow fibers with enhanced visible-light photocatalytic activity toward dye degradation

    Panomsuwan G., Wongcharoen S., Chokradcharoen C., Tipplook M., Jongprateep O., Saito N.

    RSC Advances   Vol. 12 ( 1 ) page: 193 - 200   2021.12

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    TiO2 hollow fibers (THF) were prepared by a template method using kapok as a biotemplate and subsequently decorated by plasmonic Au nanoparticles using a solution plasma process. The THF exhibited an anatase phase and a hollow structure with a mesoporous wall. Au nanoparticles with a diameter of about 5-10 nm were uniformly distributed on the THF surface. Au nanoparticles-decorated TiO2 hollow fibers (Au/THF) have enhanced photocatalytic activity toward methylene blue degradation under visible light-emitting diode (Vis-LED) as compared to pristine THF and P25. This could be attributed to combined effects including effective light-harvesting by a hollow structure, large surface area due to a mesoporous wall of THF, and visible-light absorption and efficient charge separation induced by Au nanoparticles. The Au/THF also showed good recyclability and separation ability.

    DOI: 10.1039/d1ra07323k

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  38. Synergetic design of dopant-free defect-enriched 3D interconnected hierarchical porous graphene mesh for boosting oxygen reduction reaction

    Zhao Y., Wang X., Guo X., Cheng D., Zhou H., Saito N., Fan T.

    Carbon   Vol. 184   page: 609 - 617   2021.10

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    To resolve Pt-dependency problems in energy convention systems, we provide an idea for construct a highly active 3D interconnected hierarchical porous graphene mesh (3D-PGM) with effective exposure active sites. By a facile controllable process through self-assembly and chemical etching of reduced-graphene oxide, synergetic enhancement of oxygen reduction reaction (ORR) performance from intrinsic activity to apparent activity was realized. The as-obtained materials exhibit 3D interconnected hierarchical porosity for efficient mass transport, a high surface defect content with increased numbers of active sites and a robust conductive network, leading to a comprehensive multiscale electron transfer capability that ultimately enhances the ORR catalytic activity. Incredibly, the alkaline ORR performance of as-obtained catalyst exhibits a 4-electron pathway reaction with an onset potential (Eonset) of 0.89 V, half-wave potential (E1/2) of 0.84 V, and a lower Tafel slope of 58 mV dec−1, showing activity comparable to that of Pt/C catalysts. Moreover, the as assembled primary Zn–air batteries (ZABs) demonstrate a higher power density (182.6 mW cm−2) and a higher specific capacity (809.1 mA h g−1) than the Pt/C-based counterpart. The outstanding electrochemical performance and facile fabrication techniques make this material a promising alternative to commercial Pt/C for renewable energy devices.

    DOI: 10.1016/j.carbon.2021.08.066

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  39. Structure and properties of nanocarbons-encapsulated WC synthesized by solution plasma process in palm oils

    Islam, MZ; Watthanaphanit, A; Chae, S; Niitsu, K; Saito, N

    MATERIALS EXPRESS   Vol. 11 ( 9 ) page: 1602 - 1607   2021.9

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    DOI: 10.1166/mex.2021.2034

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  40. High electrical conductivity and oxidation reduction reaction activity of tungsten carbide/carbon nanocomposite synthesized from palm oil by solution plasma process

    Islam, MZ; Watthanaphanit, A; Chae, S; Niitsu, K; Saito, N

    MATERIALS EXPRESS   Vol. 11 ( 9 ) page: 1587 - 1593   2021.9

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    DOI: 10.1166/mex.2021.2035

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  41. Facile synthesis of ZnO nanobullets by solution plasma without chemical additives

    Kim K., Chae S., Choi P.G., Itoh T., Saito N., Masuda Y.

    RSC Advances   Vol. 11 ( 43 ) page: 26785 - 26790   2021.7

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    ZnO nano-bullets were synthesized using solution plasma from only Zn electrode in water without any chemical agents. In this sustainable synthesis system, the rapid quenching reaction at the interface between the plasma/liquid phases facilitates the fast formation of nano-sized materials. The coil-to-pin type electrode geometry, which overcomes the discharge interruption owing to the electrode gap broadening of the typical pin-to-pin type enables the synthesis of numerous nanomaterials through a stable discharge for 1 h. The as-prepared samples exhibited a high crystalline ZnO structure without post calcination, and the length and width were 71.8 and 29.1 nm, respectively. The main exposed facet of ZnO nano-bullets was the (100) crystal facet, but interestingly, the (101) facet was confirmed at the inclined surfaces in the edges. The (101) crystal facet has an asymmetric Zn and O atom arrangement, and it could result in a focused electron density area with relatively high reactivity. Therefore, ZnO nano-bullets are promising materials for applications in advanced technologies.

    DOI: 10.1039/d1ra05008g

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  42. Reduced Red Mud as the Solar Absorber for Solar-Driven Water Evaporation and Vapor-Electricity Generation

    Wang P., Wang X., Chen S., Zhang J., Mu X., Chen Y., Sun Z., Wei A., Tian Y., Zhou J., Liang X., Miao L., Saito N.

    ACS Applied Materials and Interfaces   Vol. 13 ( 26 ) page: 30556 - 30564   2021.7

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    The emergent solar-driven water evaporation technology provides a reassuring scheme for red mud (RM) utilization in environment and materials science. With fewer restrictions on raw materials, wide availability of sheer quantity, and high complexity in chemical composition, the RM may be a promising candidate for solar absorbers. Here, we developed a novel solar absorber with reduced RM. It features favorable light absorption and photothermal conversion ability using biomass pyrolysis. When added to the polyvinyl alcohol and chitosan gel substrate, the light absorptance can reach 94.65%, while the corresponding evaporation rate is as high as 2.185 kg m-2 h-1 under an illumination density of 1 kW m-2. We further demonstrated its potential as an efficient solar absorber in the solar-driven water evaporation and the thermoelectric device to realize the stable and efficient coproduction of vapor and electricity.

    DOI: 10.1021/acsami.1c05228

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  43. Cationic nitrogen-doped graphene as a p-type modifier for high-performance PEDOT:PSS hole transporters in organic solar cells

    Lin H.S., Kaneko T., Ishikawa S., Jeon I., Chae S., Yana T., Saito N., Matsuo Y.

    Japanese Journal of Applied Physics   Vol. 60 ( 7 )   2021.7

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    This research paper reports the enhanced hole-transporting ability of widely utilized poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS) achieved by applying cationic nitrogen-doped graphene (CNG) as a p-type modifier for efficient organic solar cells (OSCs). The power conversion efficiency (PCE) of the CNG-coated PEDOT:PSS-applied OSC reaches 2.76%, which is an increase of 40% compared to that of the pristine PEDOT:PSS-applied OSC (1.96%). The significantly enhanced performance is contributed by the increased hole-transporting ability, and the improved interfacial morphology of PEDOT:PSS, which affords high-quality active layers.

    DOI: 10.35848/1347-4065/ac00fc

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  44. Facile in Situ Synthesis of Amphiphilic Carbon-Supported Pt: Innovative Catalyst Preparation for Proton Exchange Membrane Fuel Cells

    Tipplook M., Panomsuwan G., Muta Y., Saito N.

    ACS Applied Energy Materials   Vol. 4 ( 6 ) page: 5606 - 5614   2021.6

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    Carbon materials are widely utilized to support platinum (Pt) catalysts for proton exchange membrane fuel cells (PEMFCs). However, carbon surfaces generally promote hydrophobicity, which limits the transport of active species and lowers the efficiency of PEMFCs. Consequently, functional groups should be introduced on the carbon surface to create transport channels. One promising strategy is to modify the amphiphilic functional group on a carbon surface. In this study, the liquid-phase plasma process was applied to realizing a facile one-step synthesis of amphiphilic functional group-modified carbon-supported platinum (Am@C/Pt) to serve as a catalyst. This novel synthesis strategy provides several advantages over conventional processes, such as reducing the number of steps and minimizing the chemical and energy consumptions. Experimental results revealed that the PEMFCs' efficiency with Am@C/Pt is mainly controlled by the number of hydrophilic and hydrophobic characters on the carbon surface. A single PEMFC demonstrated a maximum current and power density of 2.41 A cm-2 and 1.68 W cm-2, respectively, at 0.7 V, which was significantly higher than those of commercially available carbon-supported Pt catalysts. Furthermore, Am@C/Pt demonstrated superior durability after 5000 test cycles.

    DOI: 10.1021/acsaem.1c00406

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  45. Insight on solution plasma in aqueous solution and their application in modification of chitin and chitosan

    Chokradjaroen C., Niu J., Panomsuwan G., Saito N.

    International Journal of Molecular Sciences   Vol. 22 ( 9 )   2021.5

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    Sustainability and environmental concerns have persuaded researchers to explore renewable materials, such as nature-derived polysaccharides, and add value by changing chemical structures with the aim to possess specific properties, like biological properties. Meanwhile, finding methods and strategies that can lower hazardous chemicals, simplify production steps, reduce time consumption, and acquire high-purified products is an important task that requires attention. To break through these issues, electrical discharging in aqueous solutions at atmospheric pressure and room temperature, referred to as the “solution plasma process”, has been introduced as a novel process for modification of nature-derived polysaccharides like chitin and chitosan. This review reveals insight into the electrical discharge in aqueous solutions and scientific progress on their application in a modification of chitin and chitosan, including degradation and deacetylation. The influencing parameters in the plasma process are intensively explained in order to provide a guideline for the modification of not only chitin and chitosan but also other nature-derived polysaccharides, aiming to address economic aspects and environmental concerns.

    DOI: 10.3390/ijms22094308

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  46. Deposition of carbon–tungsten carbide on coir pulp to improve its compatibility with polylactic acid

    Boonyeun N., Rujiravanit R., Saito N.

    Cellulose   Vol. 28 ( 7 ) page: 4119 - 4136   2021.5

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    To increase hydrophobicity of surfaces of coir pulp, carbon–tungsten carbide (WC) was synthesized and simultaneously deposited on coir pulp by applying in-liquid electrical discharge plasma, so-called solution plasma process (SPP). As a result, water contact angle of carbon-WC deposited coir pulp was 123.4°, whereas that of coir pulp was 82.8°. The carbon-WC deposited coir pulp was then used as a filler in polylactic acid (PLA) to attain composite films of PLA/carbon-WC deposited coir pulp. The deposition of carbon-WC on coir pulp not only increased hydrophobicity of coir pulp but also improved compatibility between the filler and PLA. Even at the low filler content of 0.75 wt%, tensile strength and Young’s modulus of composite films of PLA/carbon-WC deposited coir pulp increased up to 45.73% and 22.79%, respectively compared with those of neat PLA film. Furthermore, the presence of carbon-WC deposited coir pulp in the PLA composite films could enhance the formation of crystalline structure of PLA. Accordingly, SPP is an interesting tool for surface modification of coir pulp in order to achieve surface-functionalized coir pulp for using as a filler in green composites. Graphic abstract: [Figure not available: see fulltext.]

    DOI: 10.1007/s10570-021-03799-6

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  47. Li-air battery and ORR activity of nanocarbons produced with good synthesis rate by solution plasma process Reviewed

    Islam M.Z., Watthanaphanit A., Chae S., Saito N.

    Materials Advances   Vol. 2 ( 8 ) page: 2636 - 2641   2021.4

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    Authorship:Last author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Materials Advances  

    Nanocarbons were successfully synthesized from benzene (BZ), nitro-benzene (BZ-NO2) and aniline (BZ-NH2) by solution plasma process (SPP). The SPP was generated by a bipolar pulsed power supply between two tungsten electrodes at room temperature. The synthesized nanocarbons were investigated. The highest synthesis rate, 40 mg min-1, was for the BZ nanocarbon. The transmission electron microscopy (TEM) morphology showed that the nanocarbon sizes were 15-25 nm. The Brunauer-Emmett-Teller (BET) analysis shows a highest surface area of 220 m2 g-1, pore size of 0.45 cm3 g-1, and average pore diameter of 20.0 nm for the BZ nanocarbon. Cyclic voltammetry (CV) in an acidic medium exhibited the oxygen reduction reaction (ORR) of the nanocarbons. The nanocarbon from BZ-NH2 obtained a high special capacity of 15 500 mA h per g of carbon at the discharge rate of 0.1 mA cm-2 with 1.0 mg carbon loading for the lithium (Li)-air battery. The ORR is an important reaction in Li-air batteries and fuel cells for the application of next-generation batteries and energy conversion devices.

    DOI: 10.1039/d0ma00926a

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  48. Plasma-assisted synthesis of multicomponent nanoparticles containing carbon, tungsten carbide and silver as multifunctional filler for polylactic acid composite films

    Boonyeun N., Rujiravanit R., Saito N.

    Polymers   Vol. 13 ( 7 )   2021.4

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    Multicomponent nanoparticles containing carbon, tungsten carbide and silver (carbon-WC-Ag nanoparticles) were simply synthesized via in-liquid electrical discharge plasma, the so-called solution plasma process, by using tungsten electrodes immersed in palm oil containing droplets of AgNO3 solution as carbon and silver precursors, respectively. The atomic ratio of carbon:W:Ag in carbon-WC-Ag nanoparticles was 20:1:3. FE-SEM images revealed that the synthesized carbon-WC-Ag nanoparticles with particle sizes in the range of 20–400 nm had a spherical shape with a bumpy surface. TEM images of carbon-WC-Ag nanoparticles showed that tungsten carbide nanoparticles (WCNPs) and silver nanoparticles (AgNPs) with average particle sizes of 3.46 nm and 72.74 nm, respectively, were dispersed in amorphous carbon. The carbon-WC-Ag nanoparticles were used as multifunctional fillers for the preparation of polylactic acid (PLA) composite films, i.e., PLA/carbon-WC-Ag, by solution casting. Interestingly, the coexistence of WCNPs and AgNPs in carbon-WC-Ag nanoparticles provided a benefit for the co-nucleation ability of WCNPs and AgNPs, resulting in enhanced crystallization of PLA, as evidenced by the reduction in the cold crystallization temperature of PLA. At the low content of 1.23 wt% carbon-WC-Ag nanoparticles, the Young’s modulus and tensile strength of PLA/carbon-WC-Ag composite films were increased to 25.12% and 46.08%, respectively. Moreover, the PLA/carbon-WC-Ag composite films possessed antibacterial activities.

    DOI: 10.3390/polym13070991

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  49. N-Doped few-layer graphene encapsulated Pt-based bimetallic nanoparticles: Via solution plasma as an efficient oxygen catalyst for the oxygen reduction reaction

    Phan P.Q., Naraprawatphong R., Pornaroontham P., Park J., Chokradjaroen C., Saito N.

    Materials Advances   Vol. 2 ( 1 ) page: 322 - 335   2021

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    N-Doped few-layer graphene encapsulated Pt-based bimetallic nanoparticles were successfully synthesized via the solution plasma (SP) method. This synthesis strategy can be achieved in one pot by using only pure dimethylformamide (DMF) as the reaction solution at room temperature and atmospheric pressure. The structural analyses exhibited a fine core-shell structured nanoparticle (2-4 nm), which had Pt and Pt-based bimetallic nanoparticles as a core and N-doped few-layer graphene (NFG), having 2-4 layers, as a shell. Pt-based bimetallic cores (i.e., PtAu, PtAg, and PtPd) were varied depending on the metal electrodes used in the SP process. The electrocatalytic activity toward the oxygen reduction reaction (ORR) of the obtained samples in an acidic solution was found to be acceptable, while possessing excellent durability, compared to those of the commercial carbon-supported Pt catalyst. The effective ORR activity was possibly attributed to the synergistic effect of the Pt-based bimetallic core and N-doped graphene shell which contained high amounts of pyridinic-N and quaternary-N. The results in a single fuel cell test expressed the superiority of our SP-derived sample in the fuel cell performances to commercial Pt/C. This study not only proposed potential alternative ORR catalysts with acceptable electrocatalytic activity and high durability but also provided guidelines for the facile synthesis of carbon-based core-shell nanostructured materials with low chemical use via the SP process. This journal is

    DOI: 10.1039/d0ma00718h

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  50. Natural Self-Confined Structure Effectively Suppressing Volume Expansion toward Advanced Lithium Storage Reviewed International coauthorship

    Zhang Y., Huang J., Liao Z., Hu A., Li X., Saito N., Zhang Z., Yang L., Hirano S.I.

    ACS Applied Materials and Interfaces     2021

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    Volume expansion hinders conversion-type transition-metal oxides (TMOs) as potential anode candidates for high-capacity lithium-ion batteries. While nanostructuring and nanosizing have been employed to improve the cycling stability of TMOs, we show here that both high initial Coulombic efficiency (ICE) and stable cycling reversibility are achieved in the layered compound Li0.9Nb0.9Mo1.1O6 (L0.9NMO) by inherent properties of the bulk crystal structure. In this model, MoO6 octahedra as active centers react with lithium ions and endow capacity, while a grid composed of NbO6 octahedra effectively suppresses the volume expansion, enhances the conductivity, and supports the structural skeleton from collapse. As a result, bulk L0.9NMO not only delivers a high discharge capacity of 1128 mA h g-1 at 100 mA g-1 with a considerable ICE of 87% but also exhibits long cycling stability and good rate performance (339 mA h g-1 after 500 cycles at 1 A g-1 with an average Coulombic efficiency approaching 100%). The self-confined structure provides a competitive strategy for stable conversion-type lithium storage.

    DOI: 10.1021/acsami.1c02269

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  51. Safe, superionic conductive and flexible “polymer-in-plastic salts” electrolytes for dendrite-free lithium metal batteries

    Liao Z., Huang J., Chen W., Saito N., Zhang Z., Yang L., Hirano S.i.

    Energy Storage Materials   Vol. 33   page: 442 - 451   2020.12

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    Solid polymer electrolytes (SPEs) garner tremendous attention for both enabling higher energy density battery chemistry and alleviating the safety concerns of liquid electrolytes, but the practical utilizations of SPEs are severely hindered by the limited room temperature ionic conductivity, low transference number and huge interface impedance. Unlike the polymer chain movement in traditional SPEs, in the present work, we develop novel “polymer-in-plastic salts” electrolytes (PIPSEs) via a high weight ratio of plastic salts to polymer in which polymer just function as framework so that non-flammable, superionic conductive and flexible SPEs can be obtained. Also, the high content of plastic salts in PIPSEs can wet electrodes and form compatible solid electrolyte interface (SEI) with lithium metal. As a consequence, solid-state dendrite-free symmetric Li cells with PIPSEs show ultralong cycle life over 1000 h under up to 2.0 mA cm−2 and Li/LiFePO4 and high-voltage Li/LiNi0.6Co0.2Mn0.2O2 cells utilizing above PIPSEs exhibit excellent cycle performance and appealing rate performance. It is anticipated that our work provides a new strategy for the next-generation solid-state batteries.

    DOI: 10.1016/j.ensm.2020.09.003

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  52. Single-walled carbon nanotubes wrapped by cationic nitrogen-doped carbon for electrocatalytic applications Reviewed International coauthorship

    Chae S., Phan P.Q., Panomsuwan G., Bratescu M.A., Hashimoto T., Teshima K., Saito N.

    ACS Applied Nano Materials   Vol. 3 ( 10 ) page: 10183 - 10189   2020.10

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    Authorship:Last author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:ACS Applied Nano Materials  

    The exploration of novel carbon material systems has emerged as a promising strategy for yielding unique and unconventional functional properties. In this study, a cationic nitrogen-doped carbonwrapped single-walled carbon nanotube (CN-C@SWCNT) was synthesized for the first time via solution plasma (SP) by using an aniline aqueous solution with the SWCNT dispersion under ambient conditions. The reactive species produced from SP led to the formation of cationic nitrogendoped carbon (CN-C) completely wrapped around SWCNT. Raman spectroscopy, electron diffraction, and X-ray photoelectron spectroscopy confirmed the presence of cationic nitrogen. CN-C@SWCNT exhibited an excellent electrical conductivity of 120.30 S cm-1. Room-temperature halleffect measurements revealed p-type semiconducting behavior for CN-C@ SWCNT, with a carrier concentration of 4.6 × 1020 cm-3. The electrical conductivity and carrier concentration of p-type CN-C@SWCNT were greater than those reported previously for carbon-based materials. The high electrical properties of CN-C@SWCNT were synergistically related to a conducting bridge between CN-C and SWCNT conducting domains and the presence of doped cationic nitrogen. The SP-synthesized CN-C@SWCNT demonstrates immense potential as an emerging class of p-type carbon materials in advanced electrocatalytic applications.

    DOI: 10.1021/acsanm.0c02164

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  53. In situ synthesis of copper nanoparticles encapsulated by nitrogen-doped graphene at room temperature via solution plasma

    Phan P.Q., Chae S., Pornaroontham P., Muta Y., Kim K., Wang X., Saito N.

    RSC Advances   Vol. 10 ( 60 ) page: 36627 - 36635   2020.10

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:RSC Advances  

    Metal-carbon core-shell nanostructures have gained research interest due to their better performances in not only stability but also other properties, such as catalytic, optical, and electrical properties. However, they are limited by complicated synthesis approaches. Therefore, the development of a simple method for the synthesis of metal-carbon core-shell nanostructures is of great significance. In this work, a novel Cu-core encapsulated by a N-doped few-layer graphene shell was successfully synthesized in a one-pot in-liquid plasma discharge, so-called solution plasma (SP), to our knowledge for the first time. The synthesis was conducted at room temperature and atmospheric pressure by using a pair of copper electrodes submerged in a DMF solution as the precursor. The core-shell structure of the obtained products was confirmed by HR-TEM, while further insight information was explained from the results of XRD, Raman, and XPS measurements. The obtained Cu-core encapsulated by the N-doped few-layer graphene shell demonstrated relatively high stability in acid media, compared to the commercial bare Cu particles. Moreover, the stability was found to depend on the thickness of the N-doped few-layer graphene shell which can be tuned by adjusting the SP operating conditions. This journal is

    DOI: 10.1039/d0ra07162e

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  54. Solution plasma: new synthesis method of N-doped carbon dots as ultra-sensitive fluorescence detector for 2,4,6-trinitrophenol Reviewed International coauthorship

    Kim K., Chokradjaroen C., Saito N.

    Nano Express   Vol. 1 ( 2 )   2020.9

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    Herein, we report the synthesis of nitrogen-doped carbon dots (NCDs) through solution plasma (SP) for the first time. The SP method occurs a rapid dissociation of molecules, such as organic compounds, caused by an electrical discharge between electrodes immersed in a solution. The dissociation can result in the creation of various radicals such as ·C2, ·CN, and ·H which enable the rapid synthesis of carbon dots (CDs). The unique reaction of radicals allowed the formation of CDs with high N concentration and functionalization of the surface in a short time. In this study, by using the SP method, a very fine NCDs with size of 6 nm were synthesized from a pyridine/water mixture in just 10 min. Bright blue fluorescence (410 nm) with a high quantum yield (61%) was observed due to the high N concentration and the surface passivation. From the potential application point of view, the synthesized NCDs showed an excellent detection property for 2,4,6-trinitrophenol (TNP) by fluorescence quenching effect. It was due to rich amino-functional groups which act as a reaction pathway to TNP. This phenomenon was caused by the synergetic effect of a photo-induced electron transfer with the assistance of proton transfer-assisted electron transfer.

    DOI: 10.1088/2632-959X/abb9fa

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  55. Effect of electrical discharge plasma on cytotoxicity against cancer cells of N,O-carboxymethyl chitosan-stabilized gold nanoparticles

    Chokradjaroen C., Rujiravanit R., Theeramunkong S., Saito N.

    Carbohydrate Polymers   Vol. 237   2020.6

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    Electrical discharge plasma in a liquid phase can generate reactive species, e.g. hydroxyl radical, leading to rapid reactions including degradation of biopolymers. In this study, the effect of plasma treatment time on physical properties and cytotoxicity against cancer cells of N,O-carboxymethyl chitosan-stabilized gold nanoparticles (CMC-AuNPs) was investigated. AuNPs were synthesized by chemical reduction of HAuCl4 in 2 % CMC solution to obtain CMC-AuNPs, before being subjected to the plasma treatment. Results showed that the plasma treatment not only led to the reduction of hydrodynamic diameters of CMC-AuNPs from 400 nm to less than 100 nm by the plasma-induced degradation of CMC but also provided the narrow size distribution of AuNPs having diameters in the range of 2–50 nm, that were existing in CMC-AuNPs. In addition, the plasma-treated CMC-AuNPs could significantly reduce the percentage of cell viability of breast cancer cells by approximately 80 % compared to the original CMC and CMC-AuNPs.

    DOI: 10.1016/j.carbpol.2020.116162

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  56. Fabrication of biocomposite membrane with microcrystalline cellulose (MCC) extracted from sugarcane bagasse by phase inversion method

    Thiangtham S., Runt J., Saito N., Manuspiya H.

    Cellulose   Vol. 27 ( 3 ) page: 1367 - 1384   2020.2

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    Abstract: The design of biocomposite membranes based on microcrystalline cellulose (MCC) extracted from sugarcane bagasse added into matrices of poly(lactic acid) (PLA)/poly(butylene succinate) (PBS) was fabricated by the phase inversion method. The pore formation of biocomposite membranes was prepared by the phase inversion method, and the obtained biocomposite membranes showed a tunable microstructure formed in the membranes that was investigated by field-emission scanning electron microscope. Due to the high porosity and hydrophilic properties of MCC, the biocomposite membranes demonstrated excellent electrolyte wettability, large electrolyte uptake (up to 138%), and smaller interfacial resistance leading to enhancement of the ionic conductivity. Furthermore, the effects of MCC on the thermal properties of biocomposite membranes were evaluated by differential scanning calorimetry and the thermal shrinkage test. The addition of 5 wt% MCC showed the outstanding thermal stability of the biocomposite membranes. After thermal treatment at 135 °C for 1 h, this biocomposite membrane exhibited shrinkage of only 32% from the original shape while the PLA/PBS membrane showed shrinkage of 81%, which verifies that the introduction of MCC improves the thermal stabilities of biocomposite membranes. Promisingly, the biocomposite membranes represent candidate alternatives for future battery applications. Graphic abstract: [Figure not available: see fulltext.].

    DOI: 10.1007/s10570-019-02866-3

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  57. Liquid-Phase Plasma-Assisted in Situ Synthesis of Amino-Rich Nanocarbon for Transition Metal Ion Adsorption

    Tipplook M., Pornaroontham P., Watthanaphanit A., Saito N.

    ACS Applied Nano Materials   Vol. 3 ( 1 ) page: 218 - 228   2020.1

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    Amino-modified nanocarbon (NH2-C) has been widely used as an adsorbent for transition metal ion adsorption due to its high specific surface area, high electrical charge, and the ability to form a coordinate linkage to a transition metal ion. In this work, NH2-C was successfully synthesized from a mixture of phenol and (3-aminopropyl)triethoxysilane (APTES) through solution plasma processing, which performs both carbonization and amination simultaneously. This synthesis method eliminates the need to functionalize carbon with amino groups, as is required in the conventional process. Our NH2-C shows a better dispersion and a higher number of amino groups on both the external surface and inner pores, which enhances the adsorption capacity. The maximum capacities for Cu2+, Zn2+, and Cd2+ adsorption were 144.9, 115.4, and 102.0 mg g-1, respectively. These values were higher than those of five typical NH2-Cs synthesized by a conventional process. Based on the adsorption mechanism derived from adsorption kinetic, isotherm, and thermodynamic studies, the transition metal ions were chemisorbed to the surface in a monolayer endothermically and spontaneously. Moreover, it was found that NH2-C was suitable for use in ten consecutive adsorption-desorption cycles without significant loss of adsorption capacity.

    DOI: 10.1021/acsanm.9b01915

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  58. Simultaneous deacetylation and degradation of chitin hydrogel by electrical discharge plasma using low sodium hydroxide concentrations

    Rujiravanit R., Kantakanun M., Chokradjaroen C., Vanichvattanadecha C., Saito N.

    Carbohydrate Polymers   Vol. 228   2020.1

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    Electrical discharge plasma occurring in a liquid phase, so called solution plasma, can generate highly active species, e.g. free radicals, which can involve in various chemical reactions, leading to less chemical uses. In this study, solution plasma was applied to deacetylation of chitin aiming to reduce the use of alkali. It was found that solution plasma could induce deacetylation of chitin hydrogels that were dispersed in MeOH/water solutions containing low NaOH concentrations (1–12%). Due to the action of free radicals, some extent of chain session of the polymer occurred during the plasma treatment. The degree of deacetylation and molecular weight of the obtained chitosan were 78% and 220 kDa, respectively, after the plasma treatment for five cycles (1 h/cycle) by using 90% MeOH/water solution containing 12% NaOH. The obtained chitosan could completely dissolve in 2% acetic acid solution and had antibacterial activities against S. aureus and E. coli.

    DOI: 10.1016/j.carbpol.2019.115377

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  59. Synthesis of Au Nanoparticles in Natural Matrices by Liquid-Phase Plasma: Effects on Cytotoxic Activity against Normal and Cancer Cell Lines Reviewed International coauthorship

    Treesukkasem N., Chokradjaroen C., Theeramunkong S., Saito N., Watthanaphanit A.

    ACS Applied Nano Materials   Vol. 2 ( 12 ) page: 8051 - 8062   2019.12

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    Wrapping of gold nanoparticles (AuNPs) with a biocompatible matrix, to gain AuNP colloids, is a general strategy to synthesize the AuNPs for biomedical purposes. This work reports the synthesis of AuNP colloids in the aqueous solution of several natural matrices using a liquid-phase plasma process. Two classes of natural substances used are sugars (including: glucose, fructose, and sucrose) and biopolymers (including: carboxymethyl cellulose, sodium alginate, and gelatin). All are negatively charged water-soluble substances that are claimed to be sources of energy for cells to grow and have a high potential to be compatible with them. The study has emerged since one question arises: "Do these matrices also promote the growth of cancer cells?" The synthesis is performed by generating plasma across a pair of electrodes immersed in an aqueous solution of a natural matrix containing a gold precursor (HAuCl4·3H2O). Two concentrations of the matrices (0.5 and 1.0% w/v) are used, and the plasma treatment times are varied (0, 10, and 30 min). The effect of the type and concentration of natural matrices as well as the plasma treatment time on the formation of AuNPs, along with their physical and chemical properties, including morphology, size, hydrodynamic diameter (dh), colloidal stability, and charge on the AuNP surface, is evaluated. We find that the charge of the AuNP surfaces could be altered by the plasma treatment. Eventually, cytotoxicity test results against normal (MRC-5) and cancer (H460 and HeLa) cell lines could not only answer our opening question but also suggest a rather complex response. Our findings indicate the great potential of the obtained AuNP colloids as a part of cancer therapy.

    DOI: 10.1021/acsanm.9b02106

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  60. Nitriding an oxygen-doped nanocarbonaceous sorbent synthesized via solution plasma process for improving CO<inf>2</inf> adsorption capacity

    Pornaroontham P., Panomsuwan G., Chae S., Saito N., Thouchprasitchai N., Phongboonchoo Y., Pongstabodee S.

    Nanomaterials   Vol. 9 ( 12 )   2019.12

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    The synthesis of carbon nanoparticles (Cn) and oxygen-doped nanocarbon (OCn) was successfully done through a one-step synthesis by the solution plasma process (SPP). The Cn and OCn were nitrogen-doped by nitridation under an ammonia atmosphere at 800◦C for 2 h to yield NCn and NOCn, respectively, for carbon dioxide (CO2) adsorption. The NOCn exhibited the highest specific surface area (~570 m2 g−1) and highest CO2 adsorption capacity (1.63 mmol g−1 at 25◦C) among the synthesized samples. The primary nitrogen species on the surface of NOCn were pyridinic-N and pyrrolic-N. The synergistic effect of microporosity and nitrogen functionality on the NOCn surface played an essential role in CO2 adsorption enhancement. From the thermodynamic viewpoint, the CO2 adsorption on NOCn was physisorption, exothermic, and spontaneous. The NOCn showed a more negative enthalpy of adsorption, indicating its stronger interaction for CO2 on the surface, and hence, the higher adsorption capacity. The CO2 adsorption on NOCn over the whole pressure range at 25–55◦C best fitted the Toth model, suggesting monolayer adsorption on the heterogeneous surface. In addition, NOCn expressed a higher selective CO2 adsorption than Cn and so was a good candidate for multicycle adsorption.

    DOI: 10.3390/nano9121776

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  61. Quantitative spectrochemical analysis of solution plasma in aromatic molecules

    Bratescu M.A., Kim K., Saito N.

    Plasma Processes and Polymers   Vol. 16 ( 7 )   2019.7

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    A nonthermal plasma produced at atmospheric pressure in the gas resulted from the surrounding liquid is named solution plasma (SP). A quantitative and comparative spectrochemical analysis of the plasma gas and solution in benzene, pyridine, and aniline is performed. The number densities of dicarbon and cyano radicals and hydrogen molecule from the plasma gas are measured using a cheap, straightforward, and home-made optical set-up. By simply modifying the optical set-up, the molar concentration of newly formed chemical compounds is in situ obtained in the solution. The thermodynamic properties of aromatic molecules determine the electrical breakdown and the species number densities in the plasma gas. The production rate and atomic composition of carbon material are correlated with the radicals from plasma gas.

    DOI: 10.1002/ppap.201900012

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  62. P-Type Doping of Graphene with Cationic Nitrogen

    Chae S., Panomsuwan G., Bratescu M.A., Teshima K., Saito N.

    ACS Applied Nano Materials   Vol. 2 ( 3 ) page: 1350 - 1355   2019.3

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    Tailoring electrical properties of graphene by nitrogen doping is currently of great significance in a broad area of advanced applications. Bonding configuration of nitrogen atoms in graphene plays a vital role in controlling its electrical, chemical, and optical properties. Here, we report for the first time a simple bottom-up synthesis of a novel cationic nitrogen-doped graphene (CNG) by a solution plasma (SP). A mixture of ionic liquid and organic solvent was used as starting precursor. CNG exhibited an orthorhombic structure possibly due to the presence cationic nitrogen in hexagonal graphene lattice. Nitrogen doping content was found to be as high as 13.4 atom %. Electrical characterization demonstrated that the CNG exhibited a p-type semiconducting behavior with superior electrical conductivity and carrier concentration. Such unique electrical characteristics of CNG are mainly attributed to the presence of cationic nitrogen with preserved planar structure.

    DOI: 10.1021/acsanm.8b02237

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  63. Production of reducing sugar from cassava starch waste (CSW) using solution plasma process (SPP)

    Prasertsung I., Aroonraj K., Kamwilaisak K., Saito N., Damrongsakkul S.

    Carbohydrate Polymers   Vol. 205   page: 472 - 479   2019.2

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    The cassava starch processing plays an important role in food industries. During starch processing stage, a large amount of cassava starch waste (CSW) which mainly contains lost starch product and solid residue such as cassava bagasse are produced. Starch and cassava bagasse can be hydrolyzed into fermentable sugar such as glucose. In the present study, the solution plasma process (SPP) is used to treat CSW to prepare reducing sugar. The investigated parameters are treatment time, solvent concentration, applied pulsed frequency, and CSW concentration. The %yield of total reducing sugar (TRS) and glucose were calculated by DNS method and glucose assay kit, respectively. The chemical structure, morphology, and crystal structure of plasma-treated CSW were investigated. The results showed that the %yield of TRS was greatly enhanced by SPP treatment compared to that of acid hydrolysis. The CSW powder completely broke down into pieces after SPP treatment was applied. The amorphous and crystalline regions of CSW were destroyed during SPP treatment. SPP treatment of CSW with light sulfuric acid concentration of 0.08 M, applied pulsed frequency of 30 kHz, and CSW concentration of 0.5%w/v provided 99.0% TRS and 47.9% glucose.

    DOI: 10.1016/j.carbpol.2018.10.090

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  64. Enhanced degradation of methylene blue by a solution plasma process catalyzed by incidentally co-generated copper nanoparticles

    Prasertsung I., Kaewcharoen S., Kunpinit K., Yaowarat W., Saito N., Phenrat T.

    Water Science and Technology   Vol. 79 ( 5 ) page: 967 - 974   2019

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    This study presents a catalytic organic pollution treatment using the solution plasma process (SPP) with incidentally co-generated copper (Cu) nanoparticles via Cu electrode erosion. Methylene blue (MB) was used as a model organic contaminant. The treatment time was from 0 to 60 minutes at the plasma frequencies of 15 and 30 kHz. The treatment efficacy using the Cu electrode was compared with that of the tungsten (W) electrode. The high erosion-resistant W electrode provided no W nanoparticles, while the low erosion-resistant Cu electrode yielded incidental nanoparticles (10-20 nm), hypothesized to catalyze the MB degradation during the SPP. The percentage of MB degradation and the hydrogen peroxide (H2O2) generation were determined by an ultraviolet-visible spectrophotometer. The results showed that, after the SPP by the Cu electrode for 60 minutes, the MB was degraded up to 96%. Using the Cu electrode at a high plasma frequency strongly accelerated the Cu nanoparticle generation and MB treatment, although the amount of H2O2 generated during the SPP using the Cu electrode was less than that of the W electrode. The Cu nanoparticles were hypothesized to enhance MB degradation via both homogeneous (release of dissolved Cu ions) and heterogeneous (on the surface of the particles) catalytic processes.

    DOI: 10.2166/wst.2019.035

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  65. Maximization of sodium storage capacity of pure carbon material used in sodium-ion batteries Reviewed International coauthorship

    Kang J., Kim D.Y., Chae S.A., Saito N., Choi S.Y., Kim K.H.

    Journal of Materials Chemistry A   Vol. 7 ( 27 ) page: 16149 - 16160   2019

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    Generally, carbon anode materials used in sodium-ion batteries do not exhibit good electrochemical performance because of low coulombic efficiency (CE). This paper presents a strategy to overcome this limitation by causing a co-intercalation reaction in a newly designed material. Here, Na was doped inside carbons and desodiation was caused by cleaning the doped Na. Consequently, the CE consistently exceeded 100%. Furthermore, new spaces were created when the doped Na was released continuously from the carbons, thereby allowing more Na to be stored in these spaces. This consistently increased the reversible capacity during cycling. Even though the designed material was a nanomaterial with a large specific surface area, the CE in the first cycle was 85%. Because of the co-intercalation reaction, a solid-electrolyte interphase (SEI) layer might not be formed depending on the anode surface structure and continuous long-term stable cycling was possible even without an SEI layer. Thus, a useful material for sodium-ion batteries can be designed using only carbons and without next-generation materials.

    DOI: 10.1039/c9ta01751h

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  66. Solution plasma-assisted green synthesis of MnO <inf>2</inf> adsorbent and removal of cationic pollutant

    Kim H., Saito N., Kim D.

    Journal of Chemistry   Vol. 2019   2019

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    In this study, we proposed the solution plasma-(SP-) assisted green synthesis method using plants extracts, i.e., glucose, with the expectation of acting as a reducing agent and promotor for the formation of powder state of nanostructured MnO 2 . MnO 2 was simply and rapidly synthesized within 10 min by the SP-assisted method. The structural features and morphology of as-synthesized MnO 2 were characterized by XRD, Raman, FE-SEM, and TEM analyses. For potential application of as-synthesized MnO 2 , cationic dye, i.e., methylene blue (MB), removal performance was investigated by batch experiment at an initial concentration of C 0 = 100 mg L -1 . The obtained MnO 2 exhibited effective dye removal ability given high C 0 , and simultaneously applied plasma discharging further enhanced removal efficiency. These contributions therefore open a new window not only on a powerful and environmentally benign synthesis route for efficient adsorbents but also on supporting multiple removal mechanism.

    DOI: 10.1155/2019/7494292

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  67. Cytotoxicity against cancer cells of chitosan oligosaccharides prepared from chitosan powder degraded by electrical discharge plasma

    Chokradjaroen C., Theeramunkong S., Yui H., Saito N., Rujiravanit R.

    Carbohydrate Polymers   Vol. 201   page: 20 - 30   2018.12

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    Chitosan oligosaccharides, which obtain from degradation of chitosan, possess some interesting molecular weight-dependent biological properties, especially anticancer activity. Therefore, the conversion of chitosan to chitosan oligosaccharides with specific molecular weight has been continuously investigated in order to find effective strategies that can achieve both economic feasibility and environmental concerns. In this study, a novel process was developed to heterogeneously degrade chitosan powder by highly active species generated by electrical discharge plasma in a dilute salt solution (0.02 M) without the addition of other chemicals. The degradation rate obtained from the proposed process was comparable to that obtained from some other methods with the addition of acids and oxidizing agents. Separation of the water-soluble degraded products containing chitosan oligosaccharides from the reaction solution was simply done by filtration. The obtained chitosan oligosaccharides were further evaluated for an influence of their molecular weights on cytotoxicity against cancer cells and the selectivity toward cancer and normal cells.

    DOI: 10.1016/j.carbpol.2018.08.037

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  68. Mechanistic aspect based on the role of reactive oxidizing species (ROS) in macroscopic level on the glycerol photooxidation over defected and defected-free TiO<inf>2</inf>

    Jedsukontorn T., Ueno T., Saito N., Hunsom M.

    Journal of Photochemistry and Photobiology A: Chemistry   Vol. 367   page: 270 - 281   2018.12

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Journal of Photochemistry and Photobiology A: Chemistry  

    The activity of commercial (defected-free) TiO2 and black (defected) TiO2 photocatalysts was comparatively tested in the glycerol photooxidation reaction. The preliminary results demonstrated that similar compounds, including glyceraldehyde (GCD), dihydroxyacetone (DHA), glycolic acid (GCOA), formaldehyde (FMD) and glycolaldehyde (GCAD), were generated from the photocatalytic oxidation of glycerol via both photocatalysts, but they differed in their yields. The black TiO2 exhibited a higher photocatalytic activity to convert glycerol than the commercial TiO2, due to the presence of some defective structure and its low band gap energy, and also promoted the generation of GCAD as the main product. In contrast, the commercial TiO2 promoted the formation of GCD as the major product. The principle reactive oxidizing species (ROS) contributing for glycerol conversion via black TiO2 can be ranked in the order of O2•->O12>OHb•>h+/OHs•>h+. The dominate ROS related to the conversion of glycerol to GCD and DHA were O2•- and OHb•, respectively. The main ROS to alter GCD and DHA to GCAD/FMD was O2•-, while the h+ was the principle ROS to convert GCD to GCOA. Finally, the pathway of glycerol conversion and product distribution over black TiO2 via various ROS in the presence of oxygen as electron acceptor is proposed.

    DOI: 10.1016/j.jphotochem.2018.08.030

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  69. One-pot synthesis of purple benzene-derived MnO<inf>2</inf>-carbon hybrids and synergistic enhancement for the removal of cationic dyes Reviewed

    Kim H., Saito N.

    Scientific Reports   Vol. 8 ( 1 )   2018.12

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    MnO2-carbon hybrid (MnO2-C-PBz) was simultaneously synthesized by a one-step solution plasma process (SPP) using a single precursor referred to as "purple benzene", which was derived from the K+(dicyclohexano-18-crown-6 ether) complex. To clarify the synergistic effects on the cationic dye removal, MnO2-free carbon and carbon-free MnO2 samples were concurrently investigated. The results of adsorption for cationic dyes (methylene blue (MB) and rhodamine B (Rh B)) and anionic dye (methyl orange (MO)) revealed remarkably high affinity for cationic dyes. In particular, MnO2-C-PBz exhibited the highest adsorption capacity for MB, i.e., ∼3 times greater than that of the others. In addition, MnO2-C-PBz exhibited a rapid, high decolorization ability at C0 = 10 mg L-1 (within a few seconds, ∼99%) and at C0 = 100 mg L-1 (within 30 min, ∼81%), and the theoretical maximum monolayer adsorption capacity was 357.14 mg g-1 as calculated from the Langmuir adsorption isotherm equation. Furthermore, compared with carbon-free MnO2, MnO2-C-PBz exhibited quite a good cyclic stability. We expect that our findings give rise to the understanding of the synergistic effects of MnO2-carbon hybrid, as well as role of each components for the cationic dye adsorption, and may open an innovative synthesis approach to inorganic-organic hybrid materials.

    DOI: 10.1038/s41598-018-22203-1

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  70. Narrowing band gap energy of defective black TiO<inf>2</inf> fabricated by solution plasma process and its photocatalytic activity on glycerol transformation

    Jedsukontorn T., Ueno T., Saito N., Hunsom M.

    Journal of Alloys and Compounds   Vol. 757   page: 188 - 199   2018.8

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    Defective black titania (TiO2) was synthesized by the solution plasma technique at ambient temperature and pressure. The effects of the electrolyte solution medium type (KCl and HNO3) and concentration (0.3 and 3.0 mM) as well as the plasma discharge time (1–4 h) with a Ti electrode were investigated. The 3.0 mM HNO3 solution provided the highest energy per second discharging into the plasma, resulting in both a high synthesis rate of black TiO2 and a high degree of defective structures, as monitored in terms of the Ti3+/Ti4+ ratio, which can shorten the band gap energy (Eg) of the obtained black TiO2. A long plasma discharge time (4 h) induced the formation of large particles of black TiO2, which appeared as a highly defective structure. Overall, the black TiO2 prepared by discharged plasma for 4 h in 3.0 mM HNO3 solution (BTN-304) provided the highest photocatalytic activity for glycerol conversion (58.49% at 24 h) and 4.85, 3.32, 2.11, 2.15, 39.15 and 26.61% yield of glyceraldehyde, dihydroxyacetone, hydroxypyruvic acid, glycolic acid, glycolaldehyde and formaldehyde, respectively. Pathway of glycerol conversion and product distribution over black TiO2 was attempted to propose. Finally, the reusability of the best black TiO2 was explored.

    DOI: 10.1016/j.jallcom.2018.05.046

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  71. Thickness-Dependent Strain Evolution of Epitaxial SrTiO<inf>3</inf> Thin Films Grown by Ion Beam Sputter Deposition

    Panomsuwan G., Saito N.

    Crystal Research and Technology   Vol. 53 ( 8 )   2018.8

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    Epitaxial SrTiO3 (STO) thin films are grown on vicinal (001)-oriented LaAlO3 (LAO) substrates with various thicknesses (3–108 nm) by an ion beam sputter deposition (IBSD). Thickness-dependent strain in the STO films is investigated comprehensively through the X-ray analysis. The STO films grow on the LAO substrates under a compressive strain along in-plane direction (a- and b-axes) and a tensile strain along the growth direction (c-axis). With increasing film thickness, the STO unit cells evolve from more to less tetragonal structure, indicating the occurrence of strain relaxation. Quantitative strain analysis is also carried out for all STO films in terms of biaxial and hydrostatic components. It is found that the major cause of strain in STO films is caused by biaxial component over hydrostatic component. The surface morphology of STO films exhibit a step-and-terrace structure with roughness close to the LAO substrate (approx. 0.1 nm), indicating a 2D growth mode. However, as the film thickness increases, the surface terrace become rougher, which is caused by the effect of strain relaxation.

    DOI: 10.1002/crat.201700211

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  72. Enhancing Bifunctional Catalytic Activity of Oxygen Reduction and Evolution Reaction via One-Pot Formation of MnO<inf>2</inf>-Carbon Hybrid Nanocomposite

    Kim H., Saito N., Kim D.

    ChemistrySelect   Vol. 3 ( 23 ) page: 6302 - 6308   2018.6

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    While manganese dioxide (MnO2) is a promising bifunctional electrocatalyst for oxygen reduction and evolution reaction (ORR/OER) in alkaline media, electrochemical performance of bulk MnO2 limited by their poor electrical conductivity. Herein, we fabricate a MnO2-carbon nanoparticle hybrid composite (MO-CNP) by applying the plasma discharge in the single precursor of purple benzene. This synthesis route facilitates a simultaneous formation of MnO2 and carbon, which induced a homogeneously mixed and firmly anchored hybrid composite. As a result, as-obtained MO-CNP-1 shows more than 12 times higher electrical conductivity than that of prepared conventionally. Thus, formation of MO-CNP could be accompanied by a synergy between MnO2 and CNP as electrocatalyst, and consequently, electrochemical properties were significantly improved. In comparison with CNP, the ORR potential of MO-CNP-1 was positively shifted from –0.28 to –0.23 V (vs. Ag/AgCl), and current density has increased more than 2 times. Although the ORR activity of MO-CNP-1 was still far a little short of the commercial Pt/C, the MO-CNP-1 indicated significant higher OER activity, which demonstrated excellent overall catalytic capability of MO-CNP-1 as bifunctional catalyst.

    DOI: 10.1002/slct.201800851

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  73. Nano-Assembled Thin Films of Tetraphenylporphyrin on Amine Silane-Modified Substrate for the Optical Gas Sensor

    Tipplook, M; Hashimi, K; Bratescu, MA; Saito, N

    NANOSCIENCE AND NANOTECHNOLOGY LETTERS   Vol. 10 ( 5-6 ) page: 667 - 674   2018.5

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    DOI: 10.1166/nnl.2018.2719

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  74. The Nano-Structure and Their Properties of Exfoliation Several Layers-Stacked Graphene Prepared from Graphite Dispersed in Aqueous Solutions by Solution Plasma

    Chae, S; Hashimi, K; Bratescu, MA; Saito, N

    NANOSCIENCE AND NANOTECHNOLOGY LETTERS   Vol. 10 ( 5-6 ) page: 784 - 789   2018.5

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    DOI: 10.1166/nnl.2018.2716

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  75. The Initial Reactions from Pyridine to Hetero-Carbon Nanomaterials Through Solution Plasma

    Kim, K; Hashimi, K; Bratescu, MA; Saito, N

    NANOSCIENCE AND NANOTECHNOLOGY LETTERS   Vol. 10 ( 5-6 ) page: 814 - 819   2018.5

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    DOI: 10.1166/nnl.2018.2655

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  76. Photoinduced glycerol oxidation over plasmonic au and aum (M = Pt, Pd and Bi) nanoparticle-decorated TiO<inf>2</inf> photocatalysts

    Jedsukontorn T., Saito N., Hunsom M.

    Nanomaterials   Vol. 8 ( 4 )   2018.4

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    In this study, sol-immobilization was used to prepare gold nanoparticle (Au NP)-decorated titanium dioxide (TiO2) photocatalysts at different Au weight % (wt. %) loading (Aux/TiO2, where x is the Au wt. %) and Au–M NP-decorated TiO2 photocatalysts (Au3M3/TiO2), where M is bismuth (Bi), platinum (Pt) or palladium (Pd) at 3 wt. %. The Aux/TiO2 photocatalysts exhibited a stronger visible light absorption than the parent TiO2 due to the localized surface plasmon resonance effect. Increasing the Au content from 1 wt. % to 7 wt. % led to increased visible light absorption due to the increasing presence of defective structures that were capable of enhancing the photocatalytic activity of the as-prepared catalyst. The addition of Pt and Pd coupled with the Au3/TiO2 to form Au3M3/TiO2 improved the photocatalytic activity of the Au3/TiO2 photocatalyst by maximizing their light-absorption property. The Au3/TiO2, Au3Pt3/TiO2 and Au3Pd3/TiO2 photocatalysts promoted the formation of glyceraldehyde from glycerol as the principle product, while Au3Bi3/TiO2 facilitated glycolaldehyde formation as the major product. Among all the prepared photocatalysts, Au3Pd3/TiO2 exhibited the highest photocatalytic activity with a 98.75% glycerol conversion at 24 h of reaction time.

    DOI: 10.3390/nano8040269

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  77. Accelerated formation of nanocarbons in solution plasma using benzene substituted with CF<inf>3</inf> group

    Panomsuwan G., Li O.L., Saito N., Ishizaki T.

    Japanese Journal of Applied Physics   Vol. 57 ( 1 )   2018.1

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    Nanocarbons were synthesized by a solution plasma method using benzene (C6H6) and benzotrifluoride (C5H5CF3) as precursors. The effects of the substituted CF3 group on the overall properties of synthesized nanocarbons were investigated and discussed. As determined from the characterization results, the nanocarbons obtained from both benzene and benzotrifluoride mainly exhibited an amorphous structure and their diameter was about 20-40 nm. There were no notable differences in morphology, surface area, and crystalline structure observed between them. Interestingly, the synthesis rate of nanocarbons from benzotrifluoride (20.3 mg/min) was almost three fold higher than that from benzene (7.6 mg/min). Moreover, a lower H/C ratio was observed in the case of nanocarbons from benzotrifluoride, indicating its more efficient H abstraction. The higher synthesis rate and lower H/C ratio of nanocarbons from benzotrifluoride were possibly attributed to the CF3 radicals generated in the reaction fields of solution plasma during synthesis.

    DOI: 10.7567/JJAP.57.0102B6

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  78. Degradation of chitosan hydrogel dispersed in dilute carboxylic acids by solution plasma and evaluation of anticancer activity of degraded products

    Chokradjaroen C., Rujiravanit R., Theeramunkong S., Saito N.

    Japanese Journal of Applied Physics   Vol. 57 ( 1 )   2018.1

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    Chitosan is a polysaccharide that has been extensively studied in the field of biomedicine, especially its water-soluble degraded products called chitooligosaccharides (COS). In this study, COS were produced by the degradation of chitosan hydrogel dispersed in a dilute solution (i.e., 1.55 mM) of various kinds of carboxylic acids using a non-thermal plasma technology called solution plasma (SP). The degradation rates of chitosan were influenced by the type of carboxylic acids, depending on the interaction between chitosan and each carboxylic acid. After SP treatment, the water-soluble degraded products containing COS could be easily separated from the water-insoluble residue of chitosan hydrogel by centrifugation. The production yields of the COS were mostly higher than 55%. Furthermore, the obtained COS products were evaluated for their inhibitory effect as well as their selectivity against human lung cancer cells (H460) and human lung normal cells (MRC-5).

    DOI: 10.7567/JJAP.57.0102B5

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  79. In vitro cytotoxicity of carbon black nanoparticles synthesized from solution plasma on human lung fibroblast cells

    Panomsuwan G., Chokradjaroen C., Rujiravanit R., Ueno T., Saito N.

    Japanese Journal of Applied Physics   Vol. 57 ( 1 )   2018.1

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    Carbon black nanoparticles (CB-NPs) have been synthesized from liquid benzene by a solution plasma method at room temperature and atmospheric pressure. The morphological observation by scanning electron microscopy revealed the agglomeration of aggregated fine particles. The synthesized CB-NPs were predominantly amorphous as confirmed by X-ray diffraction. The in vitro cytotoxicity of CB-NPs on the human lung fibroblast (MRC-5) cell line was assessed by the 3-(4,5-dimethylthiazole-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay and systematically compared with those of two types of commercial carbon blacks (i.e., Vulcan XC-72 and Ketjenblack EC-600JD). Cell viabilities were studied at different concentrations of 32.5, 65, 125, and 250 μg/mL. It was found that the CB-NPs derived from solution plasma exhibited a lower cytotoxicity on the MRC-5 cells than the other two comparative carbon blacks. The viability of MRC-5 cells exposed to CB-NPs remained higher than 90% even at a high concentration of 250 μg/mL. This result preliminarily confirmed the biosafety and potential use of CB-NPs in the field of biological applications.

    DOI: 10.7567/JJAP.57.0102BG

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  80. Plasma in Solution and Its Applications

    Saito N., Nakamura J., Shirafuji T., Ishizaki T.

    Japanese Journal of Applied Physics   Vol. 57 ( 1 )   2018.1

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    DOI: 10.7567/JJAP.57.010201

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  81. Solution plasma applications for the synthesis/modification of inorganic nanostructured materials and the treatment of natural polymers

    Watthanaphanit A., Saito N.

    Japanese Journal of Applied Physics   Vol. 57 ( 1 )   2018.1

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    Reducing the use of toxic chemicals, production steps, and time consumption are important concerns for researchers and process engineers to contribute in the quest for an efficient process in any production. If an equipment setup is simple, the process additionally becomes more profitable. Combination of the mentioned requirements has opened up various applications of the solution plasma process (SPP) - a physical means of generating plasma through an electrical discharge in a liquid medium at atmospheric pressure and room temperature. This review shows the progress of scientific research on the applications of the SPP for the synthesis/modification of inorganic nanostructured materials and the treatment of natural polymers. Development achieved in each application is demonstrated.

    DOI: 10.7567/JJAP.57.0102A3

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  82. Synthesis of silicon-carbon black composite as anode material for lithium ion battery

    Kim H., Yun Y., Lee Y.C., Lee M.H., Saito N., Kang J.

    Japanese Journal of Applied Physics   Vol. 57 ( 1 )   2018.1

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    Silicon has been attracting attention as an anode material that can be used for the design of high-capacity lithium ion batteries (LIB). However, the long-term cycling performance of silicon is limited owing to exfoliation from the current collector, resulting from volumetric expansion upon alloying with lithium in the charging process. However, carbon black is an agglomerate of primary particles that form a network and can incorporate a sufficient void space between network structures to accommodate the volumetric expansion of silicon. In this study, we propose the possibility of preventing the volume expansion and exfoliation of silicon by capturing silicon nanoparticles in the void space of the carbon black network. A silicon-carbon black composite material with this structure was successfully synthesized by solution plasma processing.

    DOI: 10.7567/JJAP.57.0102B2

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  83. Solution plasma: A new reaction field for nanomaterials synthesis

    Saito N., Bratescu M.A., Hashimi K.

    Japanese Journal of Applied Physics   Vol. 57 ( 1 )   2018.1

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    Solution plasma is a new electrical discharge process where an atmospheric non-equilibrium plasma is generated, usually at room temperature, in a liquid environment, such as an aqueous solution or an organic compound. There are a large variety of combinations used in experiments among solutions, electrode materials, plasma configurations, volumes, and reactor geometries, as well as the characteristics of the power supply. The solution plasma process (SPP) combines gas discharge physics, fluid thermodynamic properties, and fluid interfaces reactions. In SPP, nanoparticles with various sizes, shapes, crystallinities, and compositions could be obtained. The synthesis of carbon and hetero-carbon nanomaterials proves that SPP is an efficient and rapid method for their production. The polymerization of benzene in SPP can form graphene. By simply changing the organic precursor, carbon-doped nanostructures can be synthesized with a controlled composition. This review demonstrates that SPP is a new reaction field for nanomaterial production.

    DOI: 10.7567/JJAP.57.0102A4

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  84. Enhancement of nitrogen self-doped nanocarbons electrocatalyst via tune-up solution plasma synthesis

    Lee S., Saito N.

    RSC Advances   Vol. 8 ( 62 ) page: 35503 - 35511   2018

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    The development of a metal-free carbon based electrocatalyst for the oxygen reduction reaction (ORR) is an essential issue for energy conversion systems. Herein, we suggest a tune-up solution plasma (SP) synthesis based on a simple one-step and cost-effective method to fabricate nitrogen self-doped graphitic carbon nanosheets (NGS) as an electrocatalyst. This novel strategy using a low-pass filter circuit provides plasma stability and energy control during discharge in pyridine, determining the graphitic structure of nanocarbons doped with nitrogen. Notably, NGS have a relatively high surface area (621 m2 g−1), and high contents of nitrogen bonded as pyridinic-N and pyrrolic-N of 55.5 and 21.3%, respectively. As an efficient metal-free electrocatalyst, NGS exhibit a high onset potential (−0.18 V vs. Ag/AgCl) and a 3.8 transferred electron pathway for ORR in alkaline solution, as well as better long-term durability (4% current decrease after 10 000 s of operation) than commercial Pt/C (22% current drop). From this point of view, the nitrogen self-doped graphitic carbon nanosheet material synthesized using the tune-up SP system is a promising catalyst for the ORR, as an alternative to a Pt catalyst for application in energy conversion devices.

    DOI: 10.1039/C8RA06614K

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  85. The solution plasma process for heteroatom-carbon nanosheets: The role of precursors

    Hyun K., Saito N.

    Scientific Reports   Vol. 7 ( 1 )   2017.12

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    The solution plasma process (SPP), known as non-equilibrium cold plasma at atmospheric pressure and room temperature, was used to investigate the synthesis of nitrogen-carbon nasnosheets (NCNs). To verify the effect of elementary composition and structure of N-methyl-2-pyrrolidone (NMP), various precursors were used in the SPP to synthesize NCNs via the bottom-up synthesis method for the first time. The NCNs were analyzed by transmission electron microscopy, Raman spectroscopy, and X-ray photoelectron spectroscopy. Among the various precursors, SPP of 2-pyrrolidone was demonstrated to facilitate the formation of highly ordered NCNs. On the other hand, the SPP with cyclopentanone, cyclohexanone and pyrrole did not lead to the formation of carbon nanosheets. The results of this study would uncover new parameter fields for the growth of heteroatom-carbon nanosheets using this synthesis system. In addition, the study is expected to contribute toward research in improving the large-area growth and quality of two-dimensional nanostructures, such as heteroatom-carbon nanosheets or graphene, for various applications in other synthesis methods.

    DOI: 10.1038/s41598-017-04190-x

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  86. Solution Plasma Process-Derived Defect-Induced Heterophase Anatase/Brookite TiO<inf>2</inf> Nanocrystals for Enhanced Gaseous Photocatalytic Performance

    Pitchaimuthu S., Honda K., Suzuki S., Naito A., Suzuki N., Katsumata K.I., Nakata K., Ishida N., Kitamura N., Idemoto Y., Kondo T., Yuasa M., Takai O., Ueno T., Saito N., Fujishima A., Terashima C.

    ACS Omega   Vol. 3 ( 1 ) page: 898 - 905   2017.11

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    We report a simple room-temperature synthesis route for increasing the reactivity of a TiO2 photocatalyst using a solution plasma process (SPP). Hydrogen radicals generated from the SPP chamber interact with the TiO2 photocatalyst feedstock, transforming its crystalline phase and introducing oxygen vacancy defects. In this work, we examined a pure anatase TiO2 as a model feedstock because of its photocatalytic attributes and well-characterized properties. After the SPP treatment, the pure anatase crystalline phase was transformed to an anatase/brookite heterocrystalline phase with oxygen vacancies. Furthermore, the SPP treatment promoted the absorption of both UV and visible light by TiO2. As a result, TiO2 treated by the SPP for 3 h showed a high gaseous photocatalytic performance (91.1%) for acetaldehyde degradation to CO2 compared with the activity of untreated TiO2 (51%). The SPP-treated TiO2 was also more active than nitrogen-doped TiO2 driven by visible light (66%). The overall photocatalytic performance was related to the SPP treatment time. The SPP technique could be used to enhance the activity of readily available feedstocks with a short processing time. These results demonstrate the potential of this method for modifying narrow-band gap metal oxides, metal sulfides, and polymer composite-based catalyst materials. The modifications of these materials are not limited to photocatalysts and could be used in a wide range of energy and environment-based applications.

    DOI: 10.1021/acsomega.7b01698

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  87. Synthesis of Few-Layer Graphene by Peeling Graphite Flakes via Electron Exchange in Solution Plasma

    Chae S., Bratescu M., Saito N.

    Journal of Physical Chemistry C   Vol. 121 ( 42 ) page: 23793 - 23802   2017.10

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    Compared with conventional graphene, few-layer graphene is an easy-to-use material because of its interesting mechanical and chemical properties. Meanwhile, solution plasma (SP) represents a nonequilibrium discharge, which induces electron exchange similar to a catalyst. Thus, SP serves as an electron donor and acceptor between organic molecules and graphite flakes in a solution. Finally, electron exchange leads to the formation of few-layer graphene by peeling graphite flakes. Furthermore, CN-functionalized few-layer graphene (f-FLG) exhibits excellent stability and dispersibility because of the balance of attractive and repulsive forces, i.e., the van der Waals force between the planes and the electrostatic force of the nitrile functional groups on the edges. In this study, f-FLG was successfully synthesized by peeling graphite flakes via electron exchange induced by SP in an aqueous solution containing an ionic liquid (IL) (1-ethyl-3-methylimidazolium dicyanamide (EMIM-DCA)). X-ray diffraction measurements revealed that the intensity of the 002 diffraction of graphite and the crystallite size along the [001] direction decreased to about 5 nm after SP treatment, indicating the progress of graphite flake peeling. Furthermore, the purified product comprised three layers with a crystallite size along the basal plane of about 80 nm evaluated by the deconvolution of the Raman 2D band. X-ray photoelectron spectroscopy confirmed that the synthesized f-FLG contains 7.7 atom % nitrogen, and the IR spectrum revealed the presence of the CN functional group. To understand the peeling mechanism, the ionization potential (IP) and electron affinity (EA) of the IL in water, and the averaged electron excitation temperature (Te) in plasma were estimated by ab initio molecular orbital calculations, cyclic voltammetry, and optical emission spectroscopy. An energy diagram of IP, EA, and Te shows that SP served to pump electrons for their circulation via EMIM-DCA and to remove electrons from graphite flakes and inject into f-FLG.

    DOI: 10.1021/acs.jpcc.7b08516

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  88. Conversion of cellulose into reducing sugar by solution plasma process (SPP)

    Prasertsung I., Chutinate P., Watthanaphanit A., Saito N., Damrongsakkul S.

    Carbohydrate Polymers   Vol. 172   page: 230 - 236   2017.9

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    In the present study, cellulose colloids are treated with the solution plasma process in order to prepare reducing sugar. The investigated parameters are treatment time, type of electrodes, and applied pulse frequency of the bipolar supply. The reducing sugar was characterized by DNS method and the%yield of total reducing sugar (TRS) was then calculated. The crystal structure and chemical structure of plasma-treated cellulose was measured by XRD and FT-IR, respectively. The%yield of TRS was greatly enhanced by solution plasma treatment using Fe electrode. SEM and TEM micrograph indicated that Fe electrode yield the incidental Fe nanoparticles, hypothesized to catalyze the cellulose degradation during SPP treatment. The crystal structure of cellulose was destroyed. Solution plasma treatment of cellulose using Fe electrode at the high applied frequency pulse provided the highest%TRS.

    DOI: 10.1016/j.carbpol.2017.05.025

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  89. Generation of non-equilibrium condition in solution plasma discharge using low-pass filter circuit

    Heo Y., Lee S., Bratescu M., Kim S., Lee G., Saito N.

    Plasma Processes and Polymers   Vol. 14 ( 8 )   2017.8

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    Solution plasma process has been researched as one of the synthetic methods of nano- and functional materials using plasma discharge in liquids. In this study, a low-pass filter circuit was introduced to increase the density and temperature of electrons involved in a non-equilibrium condition. The discharge properties of the solution plasma generated by conventional and low-pass filter circuits were characterized and comparatively analyzed. Filtration of the MHz range current oscillations, an increase in the maximum discharge current, and a higher stability of solution plasma were obtained by simply inserting a resistor-capacitor (RC) component in the circuit, which leads to the increases in the density and temperature of electrons.

    DOI: 10.1002/ppap.201600163

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  90. Simple Solution Plasma Synthesis of Hierarchical Nanoporous MnO<inf>2</inf> for Organic Dye Removal

    Kim H., Watthanaphanit A., Saito N.

    ACS Sustainable Chemistry and Engineering   Vol. 5 ( 7 ) page: 5842 - 5851   2017.7

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    We have demonstrated a simple and green approach to synthesize hierarchical nanoporous MnO2 by applying plasma in a liquid precursor; the approach is named the "solution plasma process (SPP)." Three types of sugar, i.e., glucose, fructose, and sucrose, were used as inducers for the nanoporous MnO2 formation (hereafter called G-MnO2, F-MnO2, and S-MnO2). These were successfully synthesized within a few minutes (7-19 min) under ambient conditions. It was confirmed that the generated numerous reactive species (e.g., electrons, radicals, and ions) accelerated the reduction of MnO4-. The reaction rate as well as the physical and chemical features of resulting products were found to be related to the type of sugars. Their high surface areas (F-MnO2 (169.1 m2·g-1) > G-MnO2 (141.0 m2·g-1) > S-MnO2 (85.5 m2·g-1)) provided efficient capability for the adsorption of cationic dye molecules, i.e., methylene blue. The dye removal efficiencies of all samples were >99% for an initial dye concentration (C0) of 10 mg·L-1 within 2 min and >82% for C0 = 50 mg·L-1 within 30 min. We expect that the synthesis route presented in this study can be extended to the large-scale production of effective adsorbents and to find practical applications for the industrial and green infrastructure.

    DOI: 10.1021/acssuschemeng.7b00560

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  91. Enhanced degradation of chitosan by applying plasma treatment in combination with oxidizing agents for potential use as an anticancer agent

    Chokradjaroen C., Rujiravanit R., Watthanaphanit A., Theeramunkong S., Saito N., Yamashita K., Arakawa R.

    Carbohydrate Polymers   Vol. 167   page: 1 - 11   2017.7

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    Solution plasma (SP) treatment in combination with oxidizing agents, i.e., hydrogen peroxide (H2O2), potassium persulfate (K2S2O8) and sodium nitrite (NaNO2) were adopted to chitosan degradation in order to achieve fast degradation rate, low chemicals used and high yield of low-molecular-weight chitosan and chitooligosaccharide (COS). Among the studied oxidizing agents, H2O2 was found to be the best choice in terms of appreciable molecular weight reduction without major change in chemical structure of the degraded products of chitosan. By the combination with SP treatment, dilute solution of H2O2 (4–60 mM) was required for effective degradation of chitosan. The combination of SP treatment and dilute solution of H2O2 (60 mM) resulted in the great reduction of molecular weight of chitosan and water-soluble chitosan was obtained as a major product. The resulting water-soluble chitosan was precipitated to obtain COS. An inhibitory effect against cervical cancer cell line (HeLa cells) of COS was also examined.

    DOI: 10.1016/j.carbpol.2017.03.006

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  92. Crystallinity and surface state of cellulose in wet ball-milling process

    Nemoto S., Ueno T., Watthanaphanit A., Hieda J., Saito N.

    Journal of Applied Polymer Science   Vol. 134 ( 22 )   2017.6

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    We report the effect of wet ball-milling process under mild neutral salt conditions on the alteration of crystallinity and surface state of microcrystalline cellulose (MC). The ball-milling experiments were performed when the MC was immersed in H2O, NaCl aqueous solution, and KCl aqueous solution. Two collation groups, i.e., MC immersed in H2O2 and nonimmersed MC were additionally investigated for comparison. Except when H2O2 was present, the highest decrease in the cellulose crystallinity index (CI) was observed in dilute KCl. On the other hand, the CI of wet-milled MC/NaCl was greater than that of the wet-milled MC/H2O, however, still lower than that of the non-immersed MC. XPS results showed that the carbonization progressed in dry-milled MC and wet-milled MC/NaCl surfaces. Though, the surface oxidization progressed in wet-milled MC/H2O and wet-milled MC/KCl. Lastly, the ball-milling processes in different solutions led to various decreases of the crystallinity and the surface degradation due to carbonization and/or oxidization. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44903.

    DOI: 10.1002/app.44903

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  93. The plasma-assisted formation of Ag@Co<inf>3</inf>O<inf>4</inf> core-shell hybrid nanocrystals for oxygen reduction reaction

    Kim S.M., Jo Y.G., Lee M.H., Saito N., Kim J.W., Lee S.Y.

    Electrochimica Acta   Vol. 233   page: 123 - 133   2017.4

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    In this study, Ag@Co3O4 core-shell hybrid nanocrystals are synthesized using a plasma discharge in water for oxygen reduction reaction in alkaline solutions. A detailed analysis via electron microscopy in combination with EDS elemental mapping conclusively verifies that the reactive oxygen species generated from the plasma-assisted decomposition of water molecules govern the phase structure of the nanocrystals. Under oxidizing conditions, the Co oxide, which is more stable than the Ag oxide, provides the driving force for the segregation and preferential oxidation of Co at the surface. This leads to the formation of the core-shell architecture. The electrochemical measurements for the oxygen reduction reaction reveal that the specific activities of the Ag@Co3O4 core-shell nanocrystals are ca. 5.2 and 2.6 times higher than those of the pure Ag and Ag-Co alloy nanocrystals. The enhanced catalytic performance is attributed to the combination of electronic and geometric effects, which facilitates the O[sbnd]O bond breaking and desorption for the oxygen reduction. The insights gain through this study may serve as a foundation to design better electrochemical oxygen reduction electrocatalysts.

    DOI: 10.1016/j.electacta.2017.03.049

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  94. Enhanced ferromagnetism in graphite-like carbon layer-coated ZnO crystals

    Tu N., Dung N.H., Lan N.T., Nguyen K.T., Dung N.D., Viet D.X., Tuan N.T., Bui H.V., Nam D.V., Huy P.T., Saito N.

    Journal of Alloys and Compounds   Vol. 695   page: 233 - 237   2017

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    We report on the preparation of graphite-like carbon-coated ZnO nanoparticles by ball milling a powder mixture of ZnO and C. Magnetic measurements indicated that carbon coating can strongly enhance the room-temperature ferromagnetism of ZnO nanoparticles, depending on preparation conditions. This enhancement may stem from robust ferromagnetism at the ZnO/C interface. The origin of interfacial ferromagnetism is attributed to crystallographic defects at the surface of ZnO crystals which are stabilized by the carbon shell layer.

    DOI: 10.1016/j.jallcom.2016.10.200

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  95. Facile preparation of defective black TiO<inf>2</inf> through the solution plasma process: Effect of parametric changes for plasma discharge on its structural and optical properties

    Jedsukontorn T., Ueno T., Saito N., Hunsom M.

    Journal of Alloys and Compounds   Vol. 726   page: 567 - 577   2017

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    Defective TiO2 or black TiO2 nanoparticles (NPs) are remarkably attractive for photocatalytic applications, since the defect-disordered structure crucially affects the optical properties. In this work, high visible light-active black TiO2 NPs were synthesized by an innovative solution plasma process (SPP) with a titanium (Ti) electrode in HNO3 solution. The effects of the plasma operating parameters, in terms of the pulse frequency (20–80 kHz) and pulse width (0.5–2.0 μs) under two different HNO3 concentrations (0.3 mM and 3.0 mM) on the morphology, structural and optical properties of the obtained black TiO2 NPs were explored. Increasing the pulse frequency, pulse width and concentration of HNO3 all increased the input energy per pulse and energy per second, which induced an increased volume-based particle size, synthesis rate and Ti3+/Ti4+ ratio, but decreased the rutile mass fraction, the Ti-OH/TiO ratio and the band gap energy of the obtained black TiO2 NPs. Among all the prepared black TiO2 NP samples, those prepared at a pulse frequency of 20 kHz, pulse width of 2 μs (energy input per second of 17.3 J) in 3.0 mM HNO3 exhibited the highest visible-light absorption capability (the lowest band gap energy of ∼2.44 eV). The variation in the band gap energy was more strongly dependent on the Ti3+/Ti4+ ratio than the Ti-OH/TiO ratio in the structure of black TiO2 NPs.

    DOI: 10.1016/j.jallcom.2017.08.028

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  96. New insights into vegetable oil pyrolysis by cold plasma technique

    Meeprasertsagool P., Watthanaphanit A., Ueno T., Saito N., Reubroycharoen P.

    Energy Procedia   Vol. 138   page: 1153 - 1158   2017

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    Green liquid fuels are alternatively produced by pyrolysis of vegetable oil. Still, this process requires high processing temperature and high energy consumption per unit cost. Recently, solution/liquid-phase plasma (cold plasma) is the novel method to provide the direct energy at highly excited energy state. In this study, the investigation of the green fuel synthesis from vegetables oils using cold plasma was examined. The cold plasma reactor was connected to a bipolar pulsed power supply under 200 ml of palm oil, the pulse frequency adjusted from 15-45 kHz and the voltage adjusted in ranges of 1.2-1.5 kV with 40 minutes of discharge times, pulse width 2 μs, electrode distance 0.5 mm. Properties of generated plasma were investigated by optical emission spectroscopy (OES) methods. The liquid products were analysed by GC-MS. In order to identify components of the liquid product, a GC-MS chromatogram was carried out; the main peaks were oleic acid and palmitic acid. Therefore, the other peak showed which products were cracked to short-chain hydrocarbon and hexadecane was one of the compounds which were cracked in palm oil. In conclusion, the results showed that plasma has potential and enough energy to convert vegetable oils in liquid fuels at room temperature which can also provide the direct energy better than pyrolysis.

    DOI: 10.1016/j.egypro.2017.10.224

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  97. Photocatalytic behavior of metal-decorated TiO<inf>2</inf> and their catalytic activity for transformation of glycerol to value added compounds

    Jedsukontorn T., Saito N., Hunsom M.

    Molecular Catalysis   Vol. 432   page: 160 - 171   2017

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    In this work, TiO2 was decorated with one of four different metals (Bi, Pd, Pt and Au) by sol immobilization at ambient condition. The individual addition of each metals on the TiO2 did not affect the crystallite size or band gap energy of TiO2, but increased its visible light absorption ability due to the localized surface plasmon resonance effect of the doped metals, except for Bi, as well as the mechanism of the charge transfer. Among all the prepared metal-decorated TiO2 photocatalysts, Au/TiO2 exhibited the highest visible light absorption ability and an appropriate mechanism of charge transfer, which consequently alleviated the e−–h+ recombination. It also provided the highest photocatalytic activity for glycerol conversion (92.8% at 14 h) and yield of dihydroxyacetone, glyceraldehyde, glycolic acid, hydroxypyruvic acid and formaldehyde of 12.0, 23.1, 10.7, 13.6 and 15.3%, respectively.

    DOI: 10.1016/j.mcat.2017.02.022

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  98. Novel synthesis of PtPd nanoparticles with good electrocatalytic activity and durability

    Zhang J., Hu X., Yang B., Su N., Huang H., Cheng J., Yang H., Saito N.

    Journal of Alloys and Compounds   Vol. 709   page: 588 - 595   2017

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    PtPd nanoparticles in the size range of 2–5 nm have been directly synthesized from their metal wire electrodes via a one-step plasma sputtering technique in a solution of water and methanol under atmospheric pressure. PtPd nanoparticles produced in the water/methanol solution have good dispersibility compared with those produced in water because methanol successfully reduces the aggregation of the nanoparticles during the plasma sputtering process. Further, the solution plasma technique provides a novel reaction field with a highly energetic state for the PtPd nanoparticle synthesis. KB-supported PtPd nanoparticles (PtPd/KB, 12 wt% Pt) exhibit excellent electrocatalytic activity (over 4 times mass activity compared with commercial Pt/C) and stability (maintaining 43% mass activity after 300 cycles) towards methanol electrooxidation because of their large electrochemical surface area (ECSA, that is 2.5 times greater than that of commercial Pt/C) and synergistic effect of the binary alloy. Thus, as-synthesized PtPd/KB catalysts may have potential applications in direct methanol fuel cells (DMFCs) to lower their cost and improve their cycle efficiency.

    DOI: 10.1016/j.jallcom.2017.03.202

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  99. Simple introduction of carboxyl head group with alkyl spacer onto multiwalled carbon nanotubes by solution plasma process

    Nemoto S., Ueno T., Watthanaphanit A., Hieda J., Bratescu M.A., Saito N.

    Japanese Journal of Applied Physics   Vol. 56 ( 9 )   2017

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    A simple method of fabricating carboxyl-terminated multiwalled carbon nanotubes (MWCNTs) with alkyl spacers was developed to improve the dispersion quality of MWCNTs in aqueous solutions using solution plasma (SP) in a 6-aminocaproic acid solution. The formation of SP in the solution led to better dispersion of MWCNTs in aqueous solutions. Fourier transform infrared spectroscopy (FT-IR) results indicate that a carboxyl group with an alkyl spacer can be introduced by SP treatment in the 6-aminocaproic acid solution. Sedimentation tests show that the SP-treated MWCNTs in the 6-aminocaproic acid solution retained their good dispersion quality in aqueous solutions of pHs 5 6 and 9. The alkyl spacer plays an important role in the preservation of dispersion states particularly at pH 6.

    DOI: 10.7567/JJAP.56.096202

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  100. Synthesis of carbon nanoparticles from used motor oil and benzene via solution plasma process

    Seangarunthong N., Khongthong P., Panomsuwan G., Ueno T., Saito N., Eiad-Ua A.

    Key Engineering Materials   Vol. 751 KEM   page: 773 - 778   2017

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    Carbon nanoparticles (CNPs) were successfully synthesized from the mixture of used motor oil and benzene via a solution plasma process (SPP). The synthesis was achieved within a single step at room temperature and atmospheric pressure. The effects of mixing ratio between used motor oil and benzene on the physical and chemical properties of CNPs were investigated by means of field-emission scanning electron microscopy (FESEM), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and Raman spectroscopy. The results revealed that there were no significant changes in morphological feature and chemical functional groups on CNPs at different mixing ratios. The CNPs exhibited the aggregates of fine particles with the diameter of about 20-30 nm. The crystallinity of CNPs was found to be slightly increased when synthesized under the presence of used motor oil, possibly due to the effect of aliphatic hydrocarbons and polycyclic aromatic hydrocarbons in used motor oil. We expect that the conversion of used motor oil into CNPs by SPP could be another attractive way to add the value to used motor oil prior to disposing.

    DOI: 10.4028/www.scientific.net/KEM.751.773

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  101. Solution plasma synthesis of Pt/ZnO/KB for photo-assisted electro-oxidation of methanol

    Hu X., Ge C., Su N., Huang H., Xu Y., Zhang J., Shi J., Shen X., Saito N.

    Journal of Alloys and Compounds   Vol. 692   page: 848 - 854   2017

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    A high electrocatalytic performance Pt/ZnO/KB is well fabricated by a solution plasma technique in water at atmospheric pressure. Their electrocatalytic performance toward methanol oxidation is evaluated in alkaline with light irradiation or in dark. The electrocatalytic activity of Pt is improved in dark because the distribution and reactive sites of Pt nanoparticles are improved by coupling ZnO. And higher electrocatalytic activity is detected under light irradiation because of synergistic effect of photo- (ZnO) and electro-catalyst (Pt). Compared with several morphologies ZnO, ZnO nanowires give better catalytic activity for methanol oxidation than porous ZnO nanosheets because ZnO nanowires possess better electron transport property and smaller resistance. Under light irradiation, Pt/ZnO/KB coupled with ZnO nanowires shows over 3 times higher catalytic activity (ca. 964 mA mgPt−1) than Pt/KB (ca. 306 mA mgPt−1). And the tolerance to CO-poisoning and stability of Pt/ZnO/KB are also improved. Therefore, Pt/ZnO/KB nanocomposite will be a highly efficient potential anode catalyst in DMFCs with light irradiation.

    DOI: 10.1016/j.jallcom.2016.09.032

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  102. Solution plasma synthesis of a boron-carbon-nitrogen catalyst with a controllable bond structure

    Lee S., Heo Y., Bratescu M.A., Ueno T., Saito N.

    Physical Chemistry Chemical Physics   Vol. 19 ( 23 ) page: 15264 - 15272   2017

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    Synthesis of boron-carbon-nitrogen (BCN) nanocarbon with a controllable bond structure for enhanced oxygen reduction reaction (ORR) activity and durability was performed using a new method of discharge in organic solution mixtures named the 'Solution Plasma Process'. Using selected precursors a new strategy for the simultaneous synthesis of nanocarbon co-doped with heteroatoms was found. The synergistic effect of N and B in an uncoupling bond state improved the formation of new active sites for the ORR performance by changing the electronic structure of the base carbon. Meanwhile, when B and N are bonded together, the BCN catalyst contributes to a reduced ORR activity by forming a balanced electronic structure in carbon. The BCN nanocarbon with an uncoupling bond state exhibits an enhanced ORR activity under alkaline conditions, with an onset potential of -0.25 V versus -0.31 V for B/N coupling and 3.43 transferred electrons during the ORR. Although the ORR activity of the B/N uncoupling nanocarbon was not as good as the typical Pt/C, the durability of this synthesized material (15.1% current decrease after 20000 s of operation) was significantly better than that of the Pt/C catalyst (61.5% current drop under the same conditions). After the durability test, the increase of the chemical states containing oxygen was higher for Pt/C than B/N uncoupling.

    DOI: 10.1039/c6cp06063c

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  103. In-situ one-step synthesis of carbon-encapsulated naked magnetic metal nanoparticles conducted without additional reductants and agents

    Kang J., Kim Y., Kim H., Hu X., Saito N., Choi J., Lee M.

    Scientific Reports   Vol. 6   2016.12

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    C-encapsulated highly pure Ni, Co, and Fe magnetic nanoparticles (MNPs/C) were synthesized by an innovative one-step in-situ plasma in liquid method (solution plasma processing, SPP) without any additional reductants, agents, or treatment. Successful encapsulation of MNPs was demonstrated by using inductively coupled plasma-atomic emission spectrometry and cyclic voltammetry techniques. The obtained X-ray diffraction patterns and transmission electron microscopy images corresponded to MNPs with average diameters of 5 nm and good crystalline structure. The C capsules with spherical shapes (containing onion-like layers) were characterized by uniform sizes (ranging from 20 nm to 30 nm) and chain-like morphologies. The synthesized MNPs/C exhibited superparamagnetic properties at room temperature and might be utilized in data storage, biomedical, and energy applications since various NPs (including bimetallic ones) could be easily prepared by changing working electrodes. This study shows the potential of SPP to be a candidate for the next-generation synthesis method of NPs/C.

    DOI: 10.1038/srep38652

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  104. Fastest Formation Routes of Nanocarbons in Solution Plasma Processes

    Morishita T., Ueno T., Panomsuwan G., Hieda J., Yoshida A., Bratescu M., Saito N.

    Scientific Reports   Vol. 6   2016.11

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    Although solution-plasma processing enables room-temperature synthesis of nanocarbons, the underlying mechanisms are not well understood. We investigated the routes of solution-plasma-induced nanocarbon formation from hexane, hexadecane, cyclohexane, and benzene. The synthesis rate from benzene was the highest. However, the nanocarbons from linear molecules were more crystalline than those from ring molecules. Linear molecules decomposed into shorter olefins, whereas ring molecules were reconstructed in the plasma. In the saturated ring molecules, C-H dissociation proceeded, followed by conversion into unsaturated ring molecules. However, unsaturated ring molecules were directly polymerized through cation radicals, such as benzene radical cation, and were converted into two- and three-ring molecules at the plasma-solution interface. The nanocarbons from linear molecules were synthesized in plasma from small molecules such as C2 under heat; the obtained products were the same as those obtained via pyrolysis synthesis. Conversely, the nanocarbons obtained from ring molecules were directly synthesized through an intermediate, such as benzene radical cation, at the interface between plasma and solution, resulting in the same products as those obtained via polymerization. These two different reaction fields provide a reasonable explanation for the fastest synthesis rate observed in the case of benzene.

    DOI: 10.1038/srep36880

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  105. Effect of electron acceptors H<inf>2</inf>O<inf>2</inf> and O<inf>2</inf> on the generated reactive oxygen species <sup>1</sup>O<inf>2</inf> and OH<sup>·</sup> in TiO<inf>2</inf>-catalyzed photocatalytic oxidation of glycerol

    Jedsukontorn T., Meeyoo V., Saito N., Hunsom M.

    Cuihua Xuebao/Chinese Journal of Catalysis   Vol. 37 ( 11 ) page: 1975 - 1981   2016.11

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    The effect of the electron acceptors H2O2 and O2 on the type of generated reactive oxygen species (ROS), and glycerol conversion and product distribution in the TiO2-catalyzed photocatalytic oxidation of glycerol was studied at ambient conditions. In the absence of an electron acceptor, only HO· radicals were generated by irradiated UV light and TiO2. However, in the presence of the two electron acceptors, both HO· radical and 1O2 were produced by irradiated UV light and TiO2 in different concentrations that depended on the concentration of the electron acceptor. The use of H2O2 as an electron acceptor enhanced glycerol conversion more than O2. The type of generated value-added compounds depended on the concentration of the generated ROS.

    DOI: 10.1016/S1872-2067(16)62519-6

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  106. Differences in intermediate structures and electronic states associated with oxygen adsorption onto Pt, Cu, and Au clusters as oxygen reduction catalysts

    Morishita T., Ueno T., Panomsuwan G., Hieda J., Bratescu M., Saito N.

    Journal of Physics D: Applied Physics   Vol. 49 ( 41 )   2016.9

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    We used ab initio molecular orbital (MO) calculations to study the differences in the intermediate structures and the electronic states involved in the adsorption of O2 onto 13-atom metal clusters of Pt, Cu, and Au. Additionally, the conditions required for the electrocatalytic oxygen reduction reaction (ORR) on the Pt, Cu, and Au clusters were investigated and discussed. The intermediates involved in O2 adsorption onto Pt, Cu, and Au were found to be (Pt-O)-(Pt-O), Cu-O, and Au-O2, respectively. The differences in the O2 adsorption intermediates is explained on the basis of our analysis of the projected density of state (PDOS) area of the new MOs produced from a mixture of the 2pπ ∗ orbitals of O2 and the d orbitals of the metal clusters. The formation of the (Pt-O)-(Pt-O) intermediate after the adsorption of O2 onto the Pt cluster is attributed to the emergence of an antibonding orbital above the Fermi level. Thus, this electronic state can lead to the decomposition and desorption of O2 molecules, thereby promoting the high-activity level of ORR. For the Cu cluster, a new antibonding orbital was observed below the Fermi level. Moreover, the Cu cluster surface can only promote O2 decomposition and not O2 desorption due to the formation of copper oxides. For the Au cluster, no new MOs related to 2pπ ∗ orbitals of O2 appeared because O2 was molecularly adsorbed, implying that the Au cluster is an inefficient ORR catalyst.

    DOI: 10.1088/0022-3727/49/41/415305

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  107. Fabrication of bacterial cellulose-ZnO composite via solution plasma process for antibacterial applications

    Janpetch N., Saito N., Rujiravanit R.

    Carbohydrate Polymers   Vol. 148   page: 335 - 344   2016.9

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    Zinc oxide (ZnO) was successfully synthesized by applying a solution plasma, a plasma discharge in a liquid phase, without the addition of a reducing agent and simultaneously deposited into a bacterial cellulose pellicle that functioned as a template. By the reasons of its nano-sized structure as well as favorable porous configuration, the BC pellicle has been proved to be a splendid upholding template for the coordination of ZnO. In addition, the ZnO-deposited BC composites demonstrated strong antibacterial activity without a photocatalytic reaction against both Staphylococcus aureus and Escherichia coli. Hence, the ZnO-deposited BC composites can be used as an antibacterial material in wound dressing and water disinfection applications.

    DOI: 10.1016/j.carbpol.2016.04.066

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  108. Heterocarbon nanosheets incorporating iron phthalocyanine for oxygen reduction reaction in both alkaline and acidic media

    Hyun K., Ueno T., Panomsuwan G., Li O., Saito N.

    Physical Chemistry Chemical Physics   Vol. 18 ( 16 ) page: 10856 - 10863   2016.4

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    Heterocarbon nanosheets incorporating iron phthalocyanine (FP-NCNs-SP) have been successfully synthesized by a facile one-pot solution plasma process at high repetition frequency. It was found that the Fe-N4 catalytic active sites could be preserved on the FP-NCNs-SP without degradation. The FP-NCNs-SP also possessed large surface area, good conductivity and high degree of graphitization. Electrochemical evaluations demonstrated that NCNs-SP had excellent electrocatalytic activity and selectivity toward oxygen reduction reaction (ORR) in alkaline medium through a direct four-electron pathway. Although the significant improvement in ORR activity was clearly observed in acidic medium, it was much poorer than in alkaline medium. We believe that the results presented in this work will shed light on the advanced synthesis and design of ORR electrocatalysts at room temperature with an abundance of catalytically active sites and high ORR performance.

    DOI: 10.1039/c5cp07739g

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  109. High Efficiency DNA Extraction by Graphite Oxide/Cellulose/Magnetite Composites Under Na<sup>+</sup> Free System

    Akceoglu G., Li O., Saito N.

    JOM   Vol. 68 ( 4 ) page: 1071 - 1077   2016.4

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    DNA extraction is the key step at various research areas like biotechnology, diagnostic development, paternity determination, and forensic science. Solid support extraction is the most common method for DNA purification. In this method, Na+ ions have often been applied as binding buffers in order to obtain high extraction efficiency and high quality of DNA; however, the presence of Na+ ions might be interfering with the downstream DNA applications. In this study, we proposed graphite oxide (GO)/magnetite composite/cellulose as an innovative material for Na+-free DNA extraction. The total wt.% of GO was fixed at 4.15% in the GO/cellulose/magnetite composite. The concentration of magnetite within the composites were controlled at 0–3.98 wt.%. The extraction yield of DNA increased with increasing weight percentage of magnetite. The highest yield was achieved at 3.98 wt.% magnetite, where the extraction efficiency was reported to be 338.5 ng/µl. The absorbance ratios between 260 nm and 280 nm (A260/A280) of the DNA elution volume was demonstrated as 1.81, indicating the extracted DNA consisted of high purity. The mechanism of adsorption of DNA was provided by (1) π–π interaction between the aromatic ring in GO and nucleobases of DNA molecule, and (2) surface charge interaction between the positive charge magnetite and anions such as phosphates within the DNA molecules. The results proved that the GO/cellulose/magnetite composite provides a Na+-free method for selective DNA extraction with high extraction efficiency of pure DNA.

    DOI: 10.1007/s11837-016-1826-0

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  110. Nitrogen-Doped Carbon Nanoparticle-Carbon Nanofiber Composite as an Efficient Metal-Free Cathode Catalyst for Oxygen Reduction Reaction

    Panomsuwan G., Saito N., Ishizaki T.

    ACS Applied Materials and Interfaces   Vol. 8 ( 11 ) page: 6962 - 6971   2016.3

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    Metal-free nitrogen-doped carbon materials are currently considered at the forefront of potential alternative cathode catalysts for the oxygen reduction reaction (ORR) in fuel cell technology. Despite numerous efforts in this area over the past decade, rational design and development of a new catalyst system based on nitrogen-doped carbon materials via an innovative approach still present intriguing challenges in ORR catalysis research. Herein, a new kind of nitrogen-doped carbon nanoparticle-carbon nanofiber (NCNP-CNF) composite with highly efficient and stable ORR catalytic activity has been developed via a new approach assisted by a solution plasma process. The integration of NCNPs and CNFs by the solution plasma process can lead to a unique morphological feature and modify physicochemical properties. The NCNP-CNF composite exhibits a significantly enhanced ORR activity through a dominant four-electron pathway in an alkaline solution. The enhancement in ORR activity of NCNP-CNF composite can be attributed to the synergistic effects of good electron transport from highly graphitized CNFs as well as abundance of exposed catalytic sites and meso/macroporosity from NCNPs. More importantly, NCNP-CNF composite reveals excellent long-term durability and high tolerance to methanol crossover compared with those of a commercial 20 wt % supported on Vulcan XC-72. We expect that NCNP-CNF composite prepared by this synthetic approach can be a promising metal-free cathode catalyst candidate for ORR in fuel cells and metal-air batteries.

    DOI: 10.1021/acsami.5b10493

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  111. Electrocatalytic oxygen reduction on nitrogen-doped carbon nanoparticles derived from cyano-aromatic molecules via a solution plasma approach

    Panomsuwan G., Saito N., Ishizaki T.

    Carbon   Vol. 98   page: 411 - 420   2016.3

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    Metal-free nitrogen-doped carbon nanoparticles (NCNPs) have been synthesized via a solution plasma process with the potential to achieve uniformly distributed nitrogen atoms. A set of cyano-aromatic molecules, including benzonitrile, 2-cyanopyridine, and cyanopyrazine, were used as a single-source precursor in the synthesis without the addition of a metal catalyst source. The resultant NCNPs reveal uniformly nanosized particles (20-40 nm) and an interconnected hierarchical pore structure with a high specific surface area (210-250 m2 g-1). The difference in carbon/nitrogen mole ratios of organic precursors gives rise to the variation of nitrogen-doping level in NCNPs from 0.63 to 1.94 atom %. Detailed electrochemical evaluation toward the oxygen reduction reaction (ORR) demonstrates that NCNPs exhibit a significant improvement in terms of both onset potential and current density under alkaline and acidic conditions. The predominant distribution of graphitic-N and pyridinic-N sites on NCNPs plays an essential role in enhancing the ORR activity and the selectivity toward a four-electron reduction pathway. More importantly, NCNPs possess excellent robust long-term durability and strong methanol tolerance compared with those of a commercial Pt/carbon catalyst.

    DOI: 10.1016/j.carbon.2015.11.013

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  112. Synthesis of Fe-Cu bi-functional catalysts by solution plasma process for li-air battery application

    Li O.L., Takahashi R., Urashima K., Saito N.

    International Journal of Plasma Environmental Science and Technology   Vol. 10 ( 1 ) page: 51 - 56   2016.3

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    This research reported an innovative method to synthesize inexpensive and bi-functional catalyst electrode material for the application in Li-air battery. Non-novel metal, Cu and Fe were served, respectively, as alternative Oxygen Reduction Reaction (ORR) and Oxygen Evolution Reaction (OER). Solution Plasma Process was applied to synthesized Cu-Fe metal nanoparticles and carbon nanoparticles simultaneously. SPP was generated in benzene 100 mL using a bipolar pulse power supply. Iron and copper of diameter 1.0 mm were used for the discharge electrode and precursor of the bimetallic nanoparticles. Solution was reacted and stirred continuously for 20 minutes. Based on the amount of electrode consumption and ICP-AES analysis, the percentage of Cu and Fe supported on carbon were respectively, 2.8 and 1.0 wt%. The diameter of metal nanoparticles was approximately 10 nm, where the carbon nanoparticles ranged between 20-30 nm. From XRD analyses, the presences of Cu, Fe and CuFe2O4 were confirmed. In the performance of cyclic voltammetry, Fe and Cu nanoparticles showed the catalytic activity, respectively, for ORR and OER, at -0.38 and above 0.5 V. In the case of Fe-Cu bimetallic nanoparticles, it showed the combined catalytic activities of the single particles.

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  113. Analysis of benzoquinone decomposition in solution plasma process

    Bratescu M., Saito N.

    Journal of Instrumentation   Vol. 11 ( 1 )   2016.1

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    The decomposition of p-benzoquinone (p-BQ) in Solution Plasma Processing (SPP) was analyzed by Coherent Anti-Stokes Raman Spectroscopy (CARS) by monitoring the change of the anti-Stokes signal intensity of the vibrational transitions of the molecule, during and after SPP. Just in the beginning of the SPP treatment, the CARS signal intensities of the ring vibrational molecular transitions increased under the influence of the electric field of plasma. The results show that plasma influences the p-BQ molecules in two ways: (i) plasma produces a polarization and an orientation of the molecules in the local electric field of plasma and (ii) the gas phase plasma supplies, in the liquid phase, hydrogen and hydroxyl radicals, which reduce or oxidize the molecules, respectively, generating different carboxylic acids. The decomposition of p-BQ after SPP was confirmed by UV-visible absorption spectroscopy and liquid chromatography.

    DOI: 10.1088/1748-0221/11/01/C01009

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  114. Adsorption of carbon dioxide by solution-plasma-synthesized heteroatom-doped carbon nanospheres

    Thongwichit N., Helena Li O.L., Yaowarat W., Saito N., Suriyapraphadilok U.

    Japanese Journal of Applied Physics   Vol. 55 ( 1 )   2016.1

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    Porous carbon nanospheres (CNSs) synthesized by a plasma-in-liquid technique were applied as an adsorbent for CO2 adsorption. Two different types of aromatic solvents, benzene and pyridine, were used as precursors to generate CNSs. The prepared CNSs were carbonized and then activated with CO2 to obtain carbon materials with a suitable porous structure for CO2 adsorption. To improve CO2 adsorption capacity, activated CNSs were then chemically modified using different approaches of surface treatment, namely, HNO3 oxidation, amination without HNO3 preoxidation, and amination with HNO3 preoxidation. The CO2 adsorption capacities of the samples were investigated at 1 atm and 40 °C using a simultaneous thermal analyzer. It was found that the CO2 adsorption of CNSs was enhanced through the development of textural properties. All of the surface treatment approaches led to the increase in CO2 adsorption capacity of the activated CNSs owing to the presence of nitrogen or oxygen functional groups introduced onto the carbon surface during the treatment.

    DOI: 10.7567/JJAP.55.01AE10

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  115. Highly durable silica-coated Pt/carbon nanotubes for proton-exchange membrane fuel cells application

    Yaowarat W., Helena Li O.L., Saito N.

    Japanese Journal of Applied Physics   Vol. 55 ( 1 )   2016.1

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    Platinum nanoparticles supported on carbon nanotubes (Pt/CNTs) have been used as an electrocatalyst in proton-exchange membrane fuel cells (PEMFCs). These catalysts show higher activity in oxygen reduction reaction in PEMFCs than conventional carbon-black-supported Pt nanoparticles. However, their durability is lower than that of other metal-alloy-based or nonmetal-based catalysts. In this study, Pt/CNTs were synthesized by solution plasma followed by coating with silica layer by the sol-gel method using a cationic surfactant [cetyltrimethylammonium bromide (CTAB)]. This material can be used as a cathode in PEMFCs. The silica layer was coated on the surface of Pt/CNTs to prevent agglomeration and detachment of Pt nanoparticles from carbon nanotubes during operation. The formation of silica layers significantly improved the durability of the Pt/CNT catalysts under acidic conditions. After 300 cycles of the cyclic voltammetry test in 0.5#M sulfuric acid (H2SO4), silicacoated Pt/CNTs increased the durability by 43.0 and 24.0% compared with those of noncoated commercial Pt/C and Pt/CNTs, respectively.

    DOI: 10.7567/JJAP.55.01AE23

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  116. Synthesis of nitrogen-containing carbon by solution plasma in aniline with high-repetition frequency discharges

    Hyun K., Ueno T., Saito N.

    Japanese Journal of Applied Physics   Vol. 55 ( 1 )   2016.1

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    Nitrogen-containing carbon nanoparticles were synthesized in aniline by solution plasma with high-repetition frequency discharges. We developed a bipolar pulsed power supply that can apply high-repetition frequencies ranging from 25 to 200 kHz. By utilizing high-repetition frequencies, conductive carbons were directly synthesized. The crystallinity was increased and H/C ratio of carbon was decreased. Furthermore, nitrogen atoms were simultaneously embedded in the carbon matrix. Due to the presence of nitrogen atoms, the conductivity and electrocatalytic activity of the samples were remarkably improved compared to that of a pure carbon matrix synthesized from a benzene precursor.

    DOI: 10.7567/JJAP.55.01AE18

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  117. Synthesis of SnO<inf>2</inf> nanoparticles using a solution plasma and their gas-sensing properties

    Zhang J., Hu X., Shi J., Lu P., Shen X., Xu P., Saito N.

    Japanese Journal of Applied Physics   Vol. 55 ( 1 )   2016.1

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    A simple solution plasma method was applied to the synthesis of SnO2 nanoparticles directly from tin(II) chloride solution, without adding any precipitant, stabilizer, or other agents at atmospheric pressure, because solution plasma provides a reaction field with a highly excited energy state. The results of X-ray power diffraction (XRD) analysis and transmission electron microscopy (TEM) verified that well-crystallized SnO2 nanoparticles in the size range of 2-5 nm were synthesized. SnO2 nanoparticles show satisfactory sensitivities to acetaldehyde and ethanol.

    DOI: 10.7567/JJAP.55.01AE17

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  118. A simple synthesis method for nanostructured Co-WC/carbon composites with enhanced oxygen reduction reaction activity

    Kang J., Kim H., Saito N., Lee M.

    Science and Technology of Advanced Materials   Vol. 17 ( 1 ) page: 37 - 44   2016

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    Co nanoparticles (Co NPs) and nanoscale tungsten carbide (WC) are successfully synthesized simultaneously with mesoporous structured carbon black (C) using an innovative simple method, which is known as solution plasma processing (SPP), and NPs are also loaded onto carbon black at the same time by SPP. The introduction of Co NPs led to not only superior oxygen reduction reaction (ORR) activity in terms of onset potential and peak potential, but also to a more efficient electron transfer process compared to that of pure WC. Co-WC/C also showed durability for long-term operation better than that of commercial Pt/C. These results clearly demonstrate that the presence of Co NPs significantly enhanced the ORR and charge transfer number of neighboring WC NPs in ORR activities. In addition, it was proved that SPP is a simple method (from synthesis of NPs and carbon black to loading on carbon black) for the large-scale synthesis of NP-carbon composite. Therefore, SPP holds great potential as a candidate for nextgeneration synthetic methods for the production of NP-carbon composites.

    DOI: 10.1080/14686996.2016.1140305

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  119. DFT calculation of oxygen adsorption on a core-single shell ZnNb catalyst

    Morishita T., Ueno T., Panomsuwan G., Hieda J., Antoaneta Bratescu M., Saito N.

    RSC Advances   Vol. 6 ( 100 ) page: 98091 - 98095   2016

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    Oxygen adsorption onto Pt, Nb, and core-single shell ZnNb particles is studied using ab initio molecular orbital (MO) calculations to realize their ability for the oxygen reduction reaction (ORR). The calculations demonstrate that the electronic state of oxygen adsorption on core-single shell ZnNb is very close to that on Pt, rather than that on Nb. The energy levels of the oxygen 2pσ∗ orbital and the antibonding orbital formed by the oxygen 2pπ∗ and metal d orbitals are different depending on the type of catalyst. In contrast, the energy level of the Nb-O π∗ (O2 2pπ∗ + Nb 4d antibonding) orbital of the core-single shell ZnNb is located at a position close to that of Pt. Our finding suggests that the oxygen adsorbed on the core-single shell ZnNb particle can easily be dissociated and desorbed owing to the disappearance of the interaction between the oxygen and Nb subsurface atoms through the replacement of Zn. We expect that core-single shell ZnNb can be utilized as an efficient and cost-effective catalyst for the ORR in a polymer electrolyte fuel cell.

    DOI: 10.1039/c6ra19311k

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  120. Enhancement of conductivity in nano carbon balls by the addition of carbon tetrachloride: Via room temperature solution plasma process

    Li O.L., Hayashi H., Ishizaki T., Saito N.

    RSC Advances   Vol. 6 ( 57 ) page: 51864 - 51870   2016

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    The conductivity of carbon nanoballs (CNBs) was enhanced by two orders of magnitude with the addition of carbon tetrachloride through a room temperature solution plasma process without post-heat treatment. The synthesized CNBs demonstrated the lowest resistivity of 8 Ω cm when the ratio of benzene to carbon tetrachloride was adjusted to 3:2. The morphologies from Transmission Electron Microscopy (TEM) showed the benzene-synthesized CNBs appeared as amorphous carbon while CNBs generated from the mixture of carbon tetrachloride and benzene were presented as short range graphite with turbostratic structure. From Raman spectroscopy and X-ray diffraction patterns, the results indicated the transition from amorphous carbon to nanocrystalline-graphite (NCG). From chemical elemental analysis, the hydrogen mole percentage decreased 20-50% when 20-60 vol% of carbon tetrachloride was added into benzene. We expect that this approach can be extended to enhance the conductivity of all kinds of amorphous carbonaceous materials in other synthesis technologies under room temperature.

    DOI: 10.1039/c6ra02453j

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  121. Effect of treatment time in the Mg(OH)<inf>2</inf>/Mg–Al LDH composite film formed on Mg alloy AZ31 by steam coating on the corrosion resistance

    Kamiyama N., Panomsuwan G., Yamamoto E., Sudare T., Saito N., Ishizaki T.

    Surface and Coatings Technology   Vol. 286   page: 172 - 177   2016

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    The corrosion resistant films were fabricated on Mg alloy AZ31 substrates by steam coating method using Al(NO3)3·9H2O aqueous solution as a steam source. The treatment temperature was maintained at 433 K, while the treatment time was varied at 3, 5, 7 and 9 h. X-ray diffraction (XRD) analysis demonstrated that the coated films were composed of a mixed structure of Mg(OH)2 and Mg–Al layered double hydroxide (Mg–Al LDH) phases. As revealed by the scanning electron microscopy (SEM) observation, the surface of coated films had a good uniformity of changing treatment times. The deposition rate increased exponentially with increasing treatment time. Fourier transform infrared (FT-IR) spectra showed that carbonate and nitrate ions were co-existed in the interlayer of Mg–Al LDH. The potentiodynamic polarization curves of the film coated for 7 h exhibited the lowest corrosion current density, which was almost four orders of magnitude lower than that of bare AZ31. The enhanced corrosion resistance was well consistent with the increase of Mg–Al LDH content in the films.

    DOI: 10.1016/j.surfcoat.2015.11.051

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  122. Effect of microstructure on corrosion resistance and heat resistance of flame-resistant Ca-added magnesium alloy AZ61

    Serizawa A., Iwase Y., Sudare T., Saito N., Kamiyama N., Ishizaki T.

    Keikinzoku/Journal of Japan Institute of Light Metals   Vol. 66 ( 1 ) page: 9 - 14   2016

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Keikinzoku/Journal of Japan Institute of Light Metals  

    Effect of microstructure on corrosion resistance and heat resistance of flame-resistant Ca-added magnesium alloy AZ61 (AZX612) were investigated. An extruded and twin-rolled casting magnesium alloys AZX612 were used with a view to better understanding the relationship between microstructure and these properties. The microstructures of the magnesium alloys were characterized by optical microscope (OM), X-ray diffraction (XRD) and scanning electron microscopy (SEM)/energy dispersive X-ray spectroscopy (EDS). The shapes of compounds in the alloys observed by EDS were significantly different; spherical distribution in grain for the extruded magnesium alloy and preferential formation on grain boundaries for the twin-rolled casting magnesium alloy. The different microstructure of the two alloys resulted in showing the different properties. Immersion test in 5 mass% NaCl aqueous solution revealed that the corrosion rates for the extruded and twin-rolled casting magnesium alloys AZX612 were estimated to be 6.5 and 15.0 mm/year, respectively, indicating that the corrosion resistance of the extruded magnesium alloys AZX612 were more superior than that of the twin-rolled casting one. On the contrary, the heat resistance of the alloy did not change depending on the microstructure.

    DOI: 10.2464/jilm.66.9

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  123. Fe-N-doped carbon-based composite as an efficient and durable electrocatalyst for the oxygen reduction reaction

    Panomsuwan G., Saito N., Ishizaki T.

    RSC Advances   Vol. 6 ( 115 ) page: 114553 - 114559   2016

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    We herein report the preparation of an Fe-N-doped carbon nanoparticle-carbon nanofiber (Fe-N-CNP-CNF) composite using a solution plasma process followed by heat treatment. The resulting Fe-N-CNP-CNF exhibits excellent catalytic activity, durability, and methanol tolerance for the oxygen reduction reaction (ORR) in an alkaline solution. The enhanced ORR activity of Fe-N-CNP-CNF can reasonably be attributed to the synergistic contributions provided by a high degree of graphitization of CNF, meso/macroporosity of CNP, presence of catalytically active sites for ORR (i.e., graphitic N and Fe-N bond), and existence of carbon-encapsulated Fe/Fe3C particles.

    DOI: 10.1039/C6RA24214F

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  124. Synthesis of colloidal MnO<inf>2</inf> with a sheet-like structure by one-pot plasma discharge in permanganate aqueous solution

    Kim H., Watthanaphanit A., Saito N.

    RSC Advances   Vol. 6 ( 4 ) page: 2826 - 2834   2016

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    Stable colloidal MnO2 - consisting of MnO2 with a sheet-like structure - was synthesized by solution plasma process (SPP). The synthesis was completed in one-step by discharging the plasma in potassium permanganate (KMnO4) aqueous solution without using any dispersants or stabilizers. An alteration of the manganese oxide oxidation state, from MnO4- to MnO2 as a function of the discharge time, was investigated by UV-vis spectroscopy. Morphology and elemental constituents were observed by TEM and EDS mapping. Results indicated that the discharge time was an important feature for the formation of MnO2 in the SPP system. Specifically at neutral pH (pH = 7), MnO4- was completely reduced to MnO2 within a discharge time of 18 min. After that the obtained MnO2 was converted rapidly to Mn2+. To better understand the possible pathways of MnO2 formation by the SPP, we compared aspects of the reaction under different pH conditions. Formation of MnO2 under additional, controlled pH conditions, i.e. 2 and 12, was studied. Results suggested that hydrogen species played a key role for the reduction of MnO4- in the water-based SPP system. In comparison to the existing routes for the synthesis of MnO2 nanosheets with a single or low number of layers, the SPP holds excellent promise as an effective alternative means regarding its simplicity, time-energy preserving, and scalability.

    DOI: 10.1039/c5ra20416j

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  125. Synthesis of heteroatom-carbon nanosheets by solution plasma processing using: N -methyl-2-pyrrolidone as precursor

    Hyun K., Ueno T., Li O., Saito N.

    RSC Advances   Vol. 6 ( 9 ) page: 6990 - 6996   2016

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    Nitrogen-carbon nanosheets (NCNS), composed of multi-layer graphene with turbostratic stacking, were successfully synthesized through a solution plasma processing (SPP) at room temperature and an atmospheric pressure. The plasma was generated in 200 mL of N-methyl-2-pyrrolidone (NMP), which was applied as the carbon and nitrogen precursors. The NCNS presented an electrical resistivity of 0.065 Ω cm, which is comparable with that of N-doped carbon nanofibers (CNFs) and N-doped carbon nanotubes (CNTs). The synthesis rate of NCNS was 20 mg min-1. From the characteristics analyses, NCNS showed the surface area of 277 m2 g-1, a pore volume of 0.95 cm3 g-1 and a moderate nitrogen content of 1.3 at%. The synthesized NCNS also exhibited catalytic activity towards oxygen reduction reaction (ORR). This unique synthesis method can be applicable to synthesize multiple types of heteroatom-carbon nanosheets.

    DOI: 10.1039/c5ra23659b

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  126. Verification of Radicals Formation in Ethanol-Water Mixture Based Solution Plasma and Their Relation to the Rate of Reaction

    Sudare T., Ueno T., Watthanaphanit A., Saito N.

    Journal of Physical Chemistry A   Vol. 119 ( 48 ) page: 11668 - 11673   2015.12

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    Our previous research demonstrated that using ethanol-water mixture as a liquid medium for the synthesis of gold nanoparticles by the solution plasma process (SPP) could lead to an increment of the reaction rate of ∼35.2 times faster than that in pure water. This drastic change was observed when a small amount of ethanol, that is, at an ethanol mole fraction (χethanol) of 0.089, was added in the system. After this composition, the reaction rate decreased continuously. To better understand what happens in the ethanol-water mixture-based SPP, in this study, effect of the ethanol content on the radical formation in the system was verified. We focused on detecting the magnetic resonance of electronic spins using electron spin resonance spectroscopy to determine the type and quantity of the generated radicals at each χethanol. Results indicated that ethanol radicals were generated in the ethanol-water mixtures and exhibited maximum quantity at the xethanol of 0.089. Relationship between the ethanol radical yield and the rate of reaction, along with possible mechanism responsible for the observed phenomenon, is discussed in this paper.

    DOI: 10.1021/acs.jpca.5b07224

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  127. Adsorption and desorption of DNA tuned by hydroxyl groups in graphite oxides-based solid extraction material

    Akceoglu G., Li O., Saito N.

    Colloids and Surfaces B: Biointerfaces   Vol. 136   page: 1 - 6   2015.12

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Colloids and Surfaces B: Biointerfaces  

    The extraction of DNA is the most crucial method used in molecular biology. Up to date silica matrices has been widely applied as solid support for selective DNA adsorption and extraction. However, since adsorption force of Si. OH functional groups is much greater than that of desorption force, the DNA extraction efficiency of silica surfaces is limited. In order to increase the DNA extraction yield, a new surface with different functional groups which possess of greater desorption property is required. In this study, we proposed cellulose/graphite oxide (GO) composite as an alternative material for DNA adsorption and extraction. GO/Cellulose composite provides the major adsorption and desorption of DNA by C. OH, which belongs to alkyl or phenol type of OH functional group. Compared to Si. OH, C. OH is less polarized and reactive, therefore the composite might provide a higher desorption of DNA during the elution process. The GO/cellulose composite were prepared in spherical structure by mixing urea, cellulose, NaOH, Graphite oxide and water. The concentration of GO within the composites were controlled to be 0-4.15. wt.%. The extraction yield of DNA increased with increasing weight percentage of GO. The highest yield was achieved at 4.15. wt.% GO, where the extraction efficiency was reported as 660.4. ng/μl when applying 2. M GuHCl as the binding buffer. The absorbance ratios between 260. nm and 280. nm (A260/A280) of the DNA elution was demonstrated as 1.86, indicating the extracted DNA consisted of high purity. The results proved that GO/cellulose composite provides a simple method for selective DNA extraction with high extraction efficiency of pure DNA.

    DOI: 10.1016/j.colsurfb.2015.07.080

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  128. Influences of solution plasma conditions on degradation rate and properties of chitosan

    Tantiplapol T., Singsawat Y., Narongsil N., Damrongsakkul S., Saito N., Prasertsung I.

    Innovative Food Science and Emerging Technologies   Vol. 32   page: 116 - 120   2015.12

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Innovative Food Science and Emerging Technologies  

    In this work, the effects of solution plasma conditions on the degradation rate and properties of chitosan are investigated. Various types of electrodes including tungsten (W), copper (Cu), and iron (Fe) were used. The treatment time and the applied pulse frequency of the bipolar supply varied from 0 to 210 min and 15 to 30 kHz, respectively. The plasma-treated chitosan was characterized by GPC, XRD, FT-IR, and fractionation analysis. The results showed that after plasma treatment for 210 min, the molecular weight of chitosan decreased remarkably, when compared to those of untreated samples. The plasma treatment of chitosan using Fe electrode and high pulse frequency strongly promoted the degradation rate of chitosan. The XRD analysis showed that the crystallinity of plasma-treated chitosan was destroyed. FT-IR analysis revealed that the chemical structure of chitosan was not changed by solution plasma treatment. Solution plasma treatment of chitosan using an Fe electrode provided the highest %yield of water-soluble chitosan. Industrial Relevance In this study, the solution plasma process is introduced to treat chitosan in order to prepare low-molecular-weight chitosan. According to our finding, the solution plasma could be a potential method for the preparation of low-molecular-weight chitosan and chitooligosaccharides. Since the solution plasma is generated under mild conditions (i.e.; the reaction proceeds at room temperature and ambient pressure), therefore, it is very attractive for the degradation of polysaccharide polymer and applicable to industrial materials process such as medicine, food, chemical industry, and cosmetics. In addition, we expected that plasma technology could be used instead of conventional enzymatic treatment and chemical treatment which was high cost and contamination process.

    DOI: 10.1016/j.ifset.2015.09.014

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  129. Route of glycerol conversion and product generation via TiO<inf>2</inf>-induced photocatalytic oxidation in the presence of H<inf>2</inf>O<inf>2</inf>

    Jedsukontorn T., Meeyoo V., Saito N., Hunsom M.

    Chemical Engineering Journal   Vol. 281   page: 252 - 264   2015.12

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Chemical Engineering Journal  

    The objective of this study was to explore the route of glycerol conversion and product generation via the TiO2-induced photocatalytic oxidation in the presence of H2O2. Effects of TiO2 dosage (1-3g/L), H2O2 concentration (0.3-1.5M), light UV intensity (1.1-4.7mW/cm2) and irradiation time (4-8h) on the level of glycerol conversion and product selectivity were identified using a 2k factorial design. It was found that TiO2 and H2O2 played a simultaneous positive effect on the glycerol conversion in the presence of UV-light. Among all investigated parameters, the most important parameter on glycerol conversion and product selectivity was the irradiation time. Glycerol conversion and product generation can proceed via both h+-mediate and radical-mediated routes, but the radical-mediated route was dominant.

    DOI: 10.1016/j.cej.2015.06.078

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  130. Accelerated nanoparticles synthesis in alcohol-water-mixture-based solution plasma

    Sudare T., Ueno T., Watthanaphanit A., Saito N.

    Physical Chemistry Chemical Physics   Vol. 17 ( 45 ) page: 30255 - 30259   2015.10

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Physical Chemistry Chemical Physics  

    An extraordinary high-speed synthesis of gold nanoparticles (AuNPs) was discovered by synthesizing the AuNPs in ethanol-water mixtures using a solution plasma process (SPP). The influence of the ethanol mole fraction (χethanol) in the ethanol-water mixtures on the reduction rate of gold chloride ions to AuNPs under the SPP system was studied. The results indicated that the reaction rate of the AuNPs synthesis exhibited a maximum value (i.e. 35.2 times faster than in a pure water system) at the significant point where the partial molar volumes of ethanol and water changed drastically.

    DOI: 10.1039/c5cp05168a

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  131. The Effect of Electrode Gap Distance on the Synthesis of Carbon Materials by Using Solution Plasma Process

    Lee H., Ueno T., Saito N.

    JOM   Vol. 67 ( 11 ) page: 2550 - 2556   2015.10

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    Carbon nanomaterials were synthesized by using the solution plasma process and the carbon structure was precisely controlled through adjusting electrode gap distances. Transmission electron microscope and diffraction images showed ordered graphitic layers and clear ring patterns when the electrode distance was wider. The measurement of conductive properties has been improved approximately 400 times from 19 k Ω cm to 47 Ω cm, and the C/H ratio from the result of elemental analysis decreased from 0.31 to 0.18 with decreasing resistivity of carbon. These results showed that the electrode distance was an important factor to control the energy input during the synthesis of carbon materials in the plasma/gas zone generated by solution plasma processing and strongly affect the properties of synthesized carbon materials.

    DOI: 10.1007/s11837-015-1660-9

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  132. Innovative Graphite Oxide-Cellulose Based Material Specific for Genomic DNA Extraction

    Akceoglu G.A., Li O.L., Saito N.

    JOM   Vol. 67 ( 11 ) page: 2557 - 2563   2015.9

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:JOM  

    Extraction of genomic DNA from various types of samples is often challenging for commercial silica spin column. In this study, we proposed graphite oxide (GO)/cellulose composite as an alternative material for genomic DNA extraction. The purity of DNA and extraction efficiency were compared to that of commercial silica product. In this study, the total weight % of GO was fixed at 4.15% in GO/Cellulose composite. Chewed gum, nail clip, cigarette bud paper, animal tissue and hair sample were used as various genomic DNA sources for extraction experiments. Among all types of samples, the extraction efficiencies were 4 to 12 times higher than that of commercial silica spin column. The absorbance ratio of 260 nm to 280 nm (A260/A280) of all samples ranged between 1.6 and 2.0. The results demonstrated that GO/Cellulose composites might serve as an innovative solid support material for genomic DNA extraction.

    DOI: 10.1007/s11837-015-1610-6

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  133. Electrocatalytic oxygen reduction activity of boron-doped carbon nanoparticles synthesized via solution plasma process

    Panomsuwan G., Saito N., Ishizaki T.

    Electrochemistry Communications   Vol. 59   page: 81 - 85   2015.7

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    The synthesis of boron-doped carbon nanoparticles (BCNP) has been achieved through a solution plasma process without the addition of a metal catalyst source using a mixture of benzene and triphenyl borate as precursor. The electrocatalytic activity toward the oxygen reduction reaction (ORR) of BCNP can be improved in terms of onset potential and current density compared to that of undoped carbon nanoparticles in alkaline solution. Moreover, BCNP possesses superior long-term durability and tolerance to methanol oxidation in the ORR.

    DOI: 10.1016/j.elecom.2015.07.005

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  134. Thermal plasma treatment of stormwater sediments: Comparison between DC non-transferred and partially transferred arc plasma

    Li O.L., Guo Y., Chang J.S., Saito N.

    Environmental Technology (United Kingdom)   Vol. 36 ( 13 ) page: 1672 - 1679   2015.7

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    The disposal of enormous amount of stormwater sediments becomes an emerging worldwide problem. Stormwater sediments are contaminated by heavy metals, phosphorus, trace organic and hydrocarbons, and cannot be disposed without treatment. Thermal plasma decontamination technology offers a high decomposition rate in a wide range of toxic organic compound and immobilization of heavy metal. In this study, we compared the treatment results between two different modes of thermal plasma: (1) a non-transferred direct current (DC) mode and (2) a partial DC-transferred mode. The reductions of total organic carbon (TOC) were, respectively, 25% and 80% for non-transferred and partially transferred plasma, respectively. Most of the toxic organic compounds were converted majorly to CxHy. In the gaseous emission, the accumulated CxHy, CO, NO and H2S were significantly higher in partially transferred mode than in non-transferred mode. The solid analysis demonstrated that the concentrations of Ca and Fe were enriched by 500% and 40%, respectively. New chemical compositions such as KAlSi3O8, Fe3O4, NaCl and CaSO4 were formed after treatment in partially DC-transferred mode. The power inputs were 1 and 10 kW, respectively, for non-transferred DC mode and a partially DC-transferred mode. With a lower energy input, non-transferred plasma treatment can be used for decontamination of sediments with low TOC and metal concentration. Meanwhile, partially transferred thermal plasma with higher energy input is suitable for treating sediments with high TOC percentage and volatile metal concentration. The organic compounds are converted into valuable gaseous products which can be recycled as an energy source.

    DOI: 10.1080/09593330.2014.1003981

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  135. Water-plasma-assisted synthesis of black titania spheres with efficient visible-light photocatalytic activity

    Panomsuwan G., Watthanaphanit A., Ishizaki T., Saito N.

    Physical Chemistry Chemical Physics   Vol. 17 ( 21 ) page: 13794 - 13799   2015.6

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    Black titania spheres (H-TiO<inf>2-x</inf>) were synthesized via a simple green method assisted by water plasma at a low temperature and atmospheric pressure. The in situ production of highly energetic hydroxyl and hydrogen species from water plasma are the prominent factors in the oxidation and hydrogenation reactions during the formation of H-TiO<inf>2-x</inf>, respectively. The visible-light photocatalytic activity toward the dye degradation of H-TiO<inf>2-x</inf> can be attributed to the synergistic effect of large-surface area, visible-light absorption and the existence of oxygen vacancies and Ti<sup>3+</sup> sites.

    DOI: 10.1039/c5cp00171d

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  136. Simple one-step synthesis of fluorine-doped carbon nanoparticles as potential alternative metal-free electrocatalysts for oxygen reduction reaction

    Panomsuwan G., Saito N., Ishizaki T.

    Journal of Materials Chemistry A   Vol. 3 ( 18 ) page: 9972 - 9981A   2015.5

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Journal of Materials Chemistry A  

    Fluorine-doped carbon nanoparticles (FCNPs) were synthesized via a simple one-step solution plasma process for the first time. This synthesis strategy can be achieved at relatively low temperature and atmospheric pressure without the involvement of a metal catalyst. A mixture of toluene (C<inf>6</inf>H<inf>5</inf>CH<inf>3</inf>) and trifluorotoluene (C<inf>6</inf>H<inf>5</inf>CF<inf>3</inf>) was used as a precursor for the synthesis. The fluorine doping content can be varied from 0.95 to 4.52 at%, depending on the precursor mixing ratio. The structural analyses reveal that FCNPs mainly exhibit a disordered amorphous structure. The incorporation of fluorine atoms results in the creation of more defect sites and disordered structure in the carbon particles. The electrocatalytic activity toward the oxygen reduction reaction (ORR) of FCNPs in an alkaline solution shows a significant improvement with increasing fluorine doping content, as reflected in an increased limiting current density and a positively shifted onset potential. In association with X-ray photoelectron spectroscopy (XPS) analysis, an improved ORR activity is possibly attributed to the intercalation of ionic C-F and semi-ionic C-F bonds in the carbon structure. In addition, FCNPs possess excellent long-term operation durability and strong tolerance to methanol oxidation compared to those of a commercial Pt-based catalyst. Our results from this study not only confirm the applicability of the solution plasma process to the synthesis of FCNPs with a controllable fluorine doping level but also provide detailed information of FCNPs as potential alternative ORR catalysts for the electrocatalysis research.

    DOI: 10.1039/c5ta00244c

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  137. A new approach of nonpoint source pollution/stormwater sludge treatment by an integrated thermal plasma system

    Li O.L., Guo Y., Chang J.S., Urashima K., Saito N.

    International Journal of Environmental Science and Technology   Vol. 12 ( 5 ) page: 1769 - 1778   2015.5

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    In this study, we designed and demonstrated the effectiveness of an integrated waste treatment system for contaminated stormwater sludge. The system is comprised of two components: pulsed arc electrohydraulic discharge (PAED) for aqueous-phase treatment and thermal plasma decontamination for solid-phase treatment. PAED provided a reduction of 80 % in total organic carbon (TOC) within a treatment time of 5 min in the aqueous phase. With a prolonged treatment of 30 min, the decontamination of TOC reached over 90 % in the aqueous phase, accompanied with 20 % carbon and 70 % sulfur decreases in weight in the solid phase. A huge weight reduction can be achieved prior to further solid treatment. The solid phase, named as the PAED-treated sludge, was separated by sedimentation and transferred to thermal plasma treatment. The thermal plasma-treated sludge was slightly melted, and the formation of slag was possible. X-ray energy dispersion solid analysis showed that carbon and sulfur were reduced to zero after treatment. Si, Mg, and Al decreased by 25, 30, and 60 %, respectively, while Ca and Fe enriched by 400 and 25 %, respectively. The emission gas analyses demonstrated a possible energy recovery from gaseous compounds with adequate gaseous treatment devices. This research demonstrates an innovative treatment approach of various sludge types, especially those types that contain high water contents and are severely contaminated by toxic organic compounds.

    DOI: 10.1007/s13762-014-0570-7

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  138. Nitrogen-doped carbon nanoparticles derived from acrylonitrile plasma for electrochemical oxygen reduction

    Panomsuwan G., Saito N., Ishizaki T.

    Physical Chemistry Chemical Physics   Vol. 17 ( 9 ) page: 6227 - 6232   2015.3

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    Nitrogen-doped carbon nanoparticles were synthesized via a solution plasma process, with acrylonitrile as a single-source precursor, followed by a post-thermal annealing process. The nitrogen-bonding states can be tuned by varying the annealing temperature. The best electrocatalytic activity for oxygen reduction reaction (ORR) in terms of both onset potential and limiting current density can be achieved for the catalyst annealed at an optimal temperature of 800 °C because of the high content of graphitic-N catalytic sites and a large specific surface area.

    DOI: 10.1039/c4cp05995f

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  139. One-step facile synthesis of carbon-supported PdAu nanoparticles and their electrochemical property and stability

    Hu X., Shi J., Zhang J., Tang W., Zhu H., Shen X., Saito N.

    Journal of Alloys and Compounds   Vol. 619   page: 452 - 457   2015.1

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    Well-crystallized PdAu nanoparticles supported on Ketjen Black (KB) were successfully fabricated when both Pd and Au wires were served as the electrode pair by a solution plasma technique at atmospheric pressure. The synthesis of PdAu nanoparticles was almost simultaneous with their dispersion on KB. As-obtained PdAu nanoparticles were confirmed to be alloy by ultraviolet-visible spectrophotometer, transmission electron microscopy (TEM) and energy dispersive X-ray analysis (EDX) of each particle. PdAu nanoparticles with the average diameter of 2-5 nm were equably distributed on KB. PdAu nanoparticles showed good electrocatalytic activity both in acidic and alkaline solution corresponding to their obvious oxidation and reduction features. PdAu nanoparticles have improved electrochemical stability compared with the electrochemical properties of Pd and Au nanoparticles mixture after long time multi-scan cyclic voltammetry. Multi-scan cyclic voltammetry also presented the PdAu nanoparticles in alkaline solution have better stability than that in acidic solution. Thus as-obtained PdAu alloy nanoparticles would become a promising electrocatalysts for fuel cells or Li-air batteries. This novel process showed its potential applications in designing optimization of catalysts for fuel cells or Li-air batteries in future.

    DOI: 10.1016/j.jallcom.2014.09.051

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  140. Enhancement of ORR catalytic activity by multiple heteroatom-doped carbon materials

    Kim D., Li O., Saito N.

    Physical Chemistry Chemical Physics   Vol. 17 ( 1 ) page: 407 - 413   2015.1

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    Heteroatom-doped carbon matrices have been attracting significant attention due to their superior electrochemical stability, light weight and low cost. Hence, in this study, various types of heteroatom, including single dopants of N, B and P and multiple dopants of B-N and P-N with a carbon matrix were synthesized by an innovative method named the solution plasma process. The heteroatom was doped into the carbon matrix during the discharge process by continuous dissociation and recombination of precursors. The chemical bonding structure, ORR activity and electrochemical performance were compared in detail for each single dopant and multiple dopants. According to the Raman spectra, the carbon structures were deformed by the doped heteroatoms in the carbon matrix. In comparison with N-doped structures (NCNS), the ORR potential of PN-doped structures (PNCNS) was positively shifted from -0.27 V to -0.24 V. It was observed that doping with N decreased the bonding between P and C in the matrix. The multiple doping induced additional active sites for ORR which further enhanced ORR activity and stability. Therefore, PNCNS is a promising metal-free catalyst for ORR at the cathode in a fuel cell.

    DOI: 10.1039/c4cp03868a

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  141. Communication-In situ formation of anticorrosive Mg(OH)<inf>2</inf>/Carbon composite film on magnesium alloy by ascorbic acid-assisted hydrothermal process

    Ishizaki T., Kamiyama N., Yamamoto E., Kumagai S., Sudare T., Saito N.

    Journal of the Electrochemical Society   Vol. 162 ( 14 ) page: C741 - C743   2015

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Journal of the Electrochemical Society  

    An Mg(OH)2/carbon composite film was prepared on magnesium alloy AZ31 by an ascorbic acid (AA)-assisted hydrothermal method. All films were composed of crystalline brucite type Mg(OH)2. Film thickness decreased with an increase in the amount of AA added. X-ray photoelectron spectroscopy studies revealed that a peak component related to sp2-hybridized carbons contributed to improve film conductivity. Film resistivity decreased with an increase in C content. The film obtained from the aqueous solution containing 10 g/L of AA showed the lowest corrosion current density of all samples.

    DOI: 10.1149/2.0351514jes

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  142. Direct deposition of gold nanoparticles on cellulose fiber by solution plasma process

    Nemoto S., Watthanphanit A., Saito N.

    Materials Research Society Symposium Proceedings   Vol. 1723   page: 1 - 7   2015

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Materials Research Society Symposium Proceedings  

    DOI: 10.1557/opl.2015.13

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  143. From Cyano-aromatic Molecules to Nitrogen-doped Carbons by Solution Plasma for the Oxygen Reduction Reaction in Alkaline Medium

    Panomsuwan G., Saito N., Ishizaki T.

    Materials Today: Proceedings   Vol. 2 ( 8 ) page: 4302 - 4308   2015

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    Nitrogen-doped carbon nanoparticles (NCNPs) were synthesized by a solution plasma process followed by a thermal annealing at 900°C. Cyano-aromatic molecules, including cyanobenzene (C7H5N), 2-cyanopyridine (C6H4N2), and cyanopyrazine (C5H3N3), were used as single source precursors for the synthesis. The morphological features of NCNPs were governed by the aggregates and agglomerates of uniform nanosized particles (20-40nm). The structural analyses confirmed that NCNPs mainly exhibited a disordered amorphous carbon structure. The nitrogen doping contents determined from an X-ray photoelectron spectroscopy were found to be 0.58, 1.36, and 1.29 at% for NCNPs synthesized from cyanobenzene, 2-cyanopyridine, and cyanopyrazine, respectively. The improvements of oxygen reduction reaction activity and selectivity toward a four-electron pathway in an alkaline solution of NCNPs were correlated with the nitrogen doping content and nitrogen bonding state. The NCNPs also possessed excellent long-term durability and strong methanol tolerance in an alkaline solution compared to those of a commercial Pt/carbon catalyst.

    DOI: 10.1016/j.matpr.2015.09.017

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  144. In situ solution plasma synthesis of mesoporous nanocarbon-supported bimetallic nanoparticles

    Kang J., Saito N.

    RSC Advances   Vol. 5 ( 37 ) page: 29131 - 29134   2015

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:RSC Advances  

    Herein, is reported a novel in situ one-step synthesis method of bimetallic nanoparticles (NPs) supported on carbon black, which can markedly prevent the aggregation and growth of NPs, resulting in a small particle size (average 5 nm), good dispersion, and high-electrocatalytic-activity. This journal is

    DOI: 10.1039/c5ra04220h

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  145. Highly durable silica coated Pt/Cs with different surfactant types for proton exchange membrane fuel cell applications

    Yaowarat W., Li O., Saito N.

    RSC Advances   Vol. 5 ( 55 ) page: 44258 - 44262   2015

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    Platinum supported on carbon Vulcan XC-72 (Pt/Cs) for application as a cathode in proton exchange membrane fuel cells (PEMFCs) was coated with silica layers by a sol-gel method with three types of surfactants with different charging properties. The three various types of surfactants (1) cationic surfactant (cetyltrimethylammonium bromide (CTAB)), (2) anionic surfactant (sodium dodecylbezenesulfonate (SDBS)), and (3) non-ionic surfactant (Pluronic 123 (P123)) were applied to prevent agglomeration of the Pt nanoparticles and prevent detachment of the Pt nanoparticles from the carbon supports during operation. The degree of improvement depended on the type of surfactant applied in the sol-gel method. The formation of silica layers by SDBS and P123 significantly improved the durability of the Pt/Cs catalysts under acid conditions. Silica coated Pt/Cs formed using SDBS and P123 showed improved durability after 500 cycles in a cyclic voltammetry test in 0.5 M sulfuric acid (H<inf>2</inf>SO<inf>4</inf>) by 27.3% and 22.7%, respectively.

    DOI: 10.1039/c5ra03343h

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  146. Cellulose conversion to sugar alcohol by solution plasma processing

    Watthanaphanit A., Lee H., Saito N.

    Materials Research Society Symposium Proceedings   Vol. 1745   page: 22 - 27   2015

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    Cellulose was selectively converted to sugar alcohols (sorbitol and mannitol) over a supported-metal catalyst ruthenium on carbon (RuJC) by the application of plasma in cellulose aqueous suspension. Generally, conversion of cellulose to sugar alcohol should be done under H2 pressure and high temperature. The goal of using solution plasma process (SPP) in this study is to initiate "self-hydrogenation" by reactive hydrogen species generated from the plasma due to dissociation of water medium. The sugar alcohols were produced at room temperature and atmospheric pressure. Electrospray ionization mass spectrometric analysis indicates that the SPP is a potent tool to promote the conversion of cellulose to sugar alcohols.

    DOI: 10.1557/opl.2015.787

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  147. A study on electron impact dissociative ionization of organosilicon precursors for plasma processing

    Yun Y., Lee M., Inoue Y., Saito N., Takai O.

    Journal of Nanoscience and Nanotechnology   Vol. 14 ( 12 ) page: 9653 - 9656   2014.12

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    We discussed the electron impact dissociation behavior of the organosilicon molecules with methyl groups, based on the fragment pattern and molecular-orbital calculation of the bond dissociation energies for the molecules. From the calculation of bond dissociation energy of the organosilicon molecules, methyl groups, which bonded directly to the silicon atom, were found to have the weakest. Regarding the fragment patterns of the reactants investigated by a quadrupole mass spectrometer, the hexamethyldisiloxane was harder to dissociate than the trimethylmethoxysilane due to the strong Si-O bonding force, which also affected the dissociation in the plasma. From the above considerations, dissociation reactions by electron impact could be partly identified.

    DOI: 10.1166/jnn.2014.10175

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  148. One-step facile synthesis of Pd nanoclusters supported on carbon and their electrochemical property

    Shi J., Hu X., Zhang J., Tang W., Li H., Shen X., Saito N.

    Progress in Natural Science: Materials International   Vol. 24 ( 6 ) page: 593 - 598   2014.12

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    Well-crystallized Pd nanoclusters supported on Ketjen Black (KB) were successfully fabricated when Pd wires were served as an electrode pair by a solution plasma technique at atmospheric pressure. The synthesis of Pd nanoclusters was almost simultaneous with their dispersion on KB. Pd nanoclusters with the average diameter of about 2. nm were equably distributed on KB, and showed good electrochemical property corresponding to their obvious characteristic peaks. Multi-scan cyclic voltammetry and chronoamperometry clarified that as-prepared Pd nanoclusters have better electrochemical stability in alkaline solution than that of in acidic solution. Thus as-obtained Pd nanoclusters would become a promising electrocatalyst for fuel cells or Li-air batteries.

    DOI: 10.1016/j.pnsc.2014.10.011

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  149. In situ solution plasma synthesis of nitrogen-doped carbon nanoparticles as metal-free electrocatalysts for the oxygen reduction reaction

    Panomsuwan G., Chiba S., Kaneko Y., Saito N., Ishizaki T.

    Journal of Materials Chemistry A   Vol. 2 ( 43 ) page: 18677 - 18686   2014.11

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    We report the in situ synthesis of nitrogen-doped carbon nanoparticles (NCNPs) by a solution plasma process without the addition of metal catalysts. Organic liquid mixtures of benzene and pyrazine were used as the precursors for the synthesis. The nitrogen-doping content can be easily controlled by changing the amount of pyrazine in the precursor. The NCNPs synthesized from the solution plasma process exhibit a turbostratic structure with highly uniform nanoscale particles. The nitrogen atoms can be homogeneously incorporated into the entire carbon structure due to the in situ doping during the growth and formation of the carbon particles. The electrochemical activity toward the oxygen reduction reaction (ORR) of the NCNPs in an alkaline medium reveals the improvement in terms of both the onset potential and current density as the nitrogen-doping content increases. The enhanced ORR activity of the NCNPS is mainly attributed to the presence of pyridinic-N and graphitic-N bonding configurations. They also possess long-term durability and excellent tolerance to methanol crossover effects. The results obtained in this study have demonstrated that the solution plasma process has great potential for the synthesis of metal-free nitrogen-doped carbon electrocatalysts for the ORR. We expect that this approach can be extended to the synthesis of other heteroatom-doped carbonaceous materials for a broad range of research applications in energy conversion and storage.

    DOI: 10.1039/c4ta03010a

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  150. Solution plasma synthesis of nitrogen-doped carbon nanoballs as effective metal-free electrocatalysts for oxygen reduction reaction

    Panomsuwan G., Chiba S., Saito N., Ishizaki T.

    Prehospital and Disaster Medicine   Vol. 1641 ( 4 )   2014.11

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    Nitrogen-doped carbons nanoballs were synthesized from an organic liquid precursor (a mixture of benzene and pyrazine) by solution plasma process. After synthesis, they were further annealed at 700 and 900 °C under N2 atmosphere. The nitrogen-doped carbon nanoballs before and after thermal annealing process exhibit a similar morphological feature, and their diameters are in the range between 20 and 40 nm. With higher annealing temperature, the graphitization of the nitrogen-doped carbon nanoballs increases. For the electrocatalytic activity in an alkaline solution, the limiting current density and onset potential for the ORR activity can be significantly improved for the samples after thermal annealing at 900 °C. We anticipate that solution plasma process will be a viable alternative way for synthesizing heteroatom-doped carbon electrocatalysts for broad application in the field of fuel cells, metal-air batteries, and supercapacitors.

    DOI: 10.1557/opl.2014.319

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  151. Influence of the discharge time of solution plasma process on the formation of gold nanoparticles in alginate matrix

    Watthanaphanit A., Heo Y.K., Saito N.

    Journal of the Taiwan Institute of Chemical Engineers   Vol. 45 ( 6 ) page: 3099 - 3103   2014.11

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    Gold nanoparticles (AuNPs) stabilized in alginate matrix were synthesized by applying the plasma into alginate aqueous solution containing gold(III) chloride trihydrate precursor. Effect of the solution plasma process (SPP) discharge time on the physical properties, including shape and size, and the optical absorption properties of the synthesized AuNPs were investigated by varying the discharge times to be 0, 5, 10, 20 and 30. min. Results reveal that the increase in the discharge time leads to a size reduction of the AuNPs. Also, the particles tend to be more spherical. Appearance of the obtained AuNPs-alginate suspensions along with the change in their UV-vis absorption spectra intensity after samples were left standing for several time intervals suggest that alginate solution itself can act both as a stabilizer and a reducing agent for the AuNPs formation while the application of plasma helps to improve the controllability of shape and size of the synthesized particles. Furthermore, the method is simple, reproducible, and does not need any manipulative skill. Since the reducing agent is not required, the method is suitable for utilizing in biomedical application.

    DOI: 10.1016/j.jtice.2014.09.001

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  152. Effect of growth temperature on structural and morphological evolution of epitaxial SrTiO<inf>3</inf> thin films grown on LaAlO<inf>3</inf> (001) substrates by ion beam sputter deposition

    Panomsuwan G., Takai O., Saito N.

    Vacuum   Vol. 109   page: 175 - 179   2014.11

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    A series of epitaxial SrTiO3 (STO) thin films were grown on (001)-oriented LaAlO3 (LAO) substrates by ion beam sputter deposition (IBSD) at various growth temperatures in the range of 350-800 °C. Our results have shown that the growth temperature plays an essential role in influencing the structural and morphological evolution of the STO thin films. X-ray structural analysis demonstrates that the STO thin films are grown under in-plane compressive strain due to the effect of lattice mismatch. The out-of-plane lattice constant is found to decrease with increasing growth temperature. Atomic force microscopy observation reveals that the growth mode of STO thin films transforms from a three-dimensional island mode to a two-dimensional layer-by-layer mode at a sufficiently high growth temperature of 750 °C. We believe that high-quality epitaxial STO thin films with atomically flat surface prepared by IBSD in this study would be beneficial for the fabrication of perovskite STO-based superlattices. © 2014 Elsevier Ltd. All rights reserved.

    DOI: 10.1016/j.vacuum.2014.07.007

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  153. Hierarchical meso-macro structure porous carbon black as electrode materials in Li-air battery

    Kang J., Li O.L., Saito N.

    Journal of Power Sources   Vol. 261   page: 156 - 161   2014.9

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    A new class of hierarchical structure porous carbon black, carbon nanoballs (CNBs), was generated by solution plasma process (SPP) with benzene. The structural characterization revealed that CNBs have excellent meso-macro hierarchical pore structure, with an averaged diameter size of 14.5 nm and a total pore volume of 1.13 cm3 g-1. The CNBs are aggregated forming inter-connected pore channels in different directions on both the meso- and macrometer length scales. The discharge capacity of CNBs reached 3600 mAh g-1, which exceeded the capacity of Ketjen Black EC-600JD (a commercial carbon black with highest cell performance) by 30-40%. The excellent discharge capacity was contributed by the co-existence of high pore volume and meso-macro hierarchical porous structure. This new class carbon material exhibited higher discharge capacity compared to commercial porous carbon materials, and is possible to apply as the next generation of electrode materials in lithium-air (Li-air) battery. The structural and electrochemical properties accompanied with the synthesis mechanism of CNBs were discussed in details. © 2014 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.jpowsour.2014.03.072

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  154. Plasma-induced synthesis of CuO nanofibers and ZnO nanoflowers in water

    Hu X., Zhang X., Shen X., Li H., Takai O., Saito N.

    Plasma Chemistry and Plasma Processing   Vol. 34 ( 5 ) page: 1129 - 1139   2014.9

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    Fiber-shaped cupric oxide (CuO) nanoparticles and flower-shaped ZnO nanoparticles were facilely synthesized by plasma-induced technique directly from copper and zinc electrode pair in water, respectively. The phase composition, morphologies and optical property of nanoparticles have been investigated by energy dispersive X-ray analysis, X-ray powder diffraction, transmission electron microscopy and UV-vis. The in situ analysis by an optical emission spectroscopy clarified the formation mechanism. Plasma was generated from the discharge between a metal electrode pair in water by a pulse direct current power. CuO and ZnO nanoparticles were synthesized via almost the same formation mechanism, which were prepared via the rapid energetic radicals' bombardment to electrodes' surface, atom vapour diffusion, plasma expansion, solution medium condensation, and in situ oxygen reaction and further growth. This novel plasma-induced technique will become a potential application in nanomaterials synthesis. © 2014 Springer Science+Business Media New York.

    DOI: 10.1007/s11090-014-9546-0

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  155. X-ray analysis of strain distribution in two-step grown epitaxial SrTiO<inf>3</inf> thin films

    Panomsuwan G., Takai O., Saito N.

    Applied Physics Letters   Vol. 105 ( 5 )   2014.8

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    Epitaxial SrTiO3 (STO) thin films were grown on (001)-oriented LaAlO3 (LAO) substrates using a two-step growth method by ion beam sputter deposition. An STO buffer layer was initially grown on the LAO substrate at a low temperature of 150°C prior to growing the STO main layer at 750°C. The thickness of the STO buffer layer was varied at 3, 6, and 10nm, while the total film thickness was kept constant at approximately 110nm. According to x-ray structural analysis, we show that the STO buffer layer plays an essential role in controlling the strain in the STO layer grown subsequently. It is found that the strains in the STO films are more relaxed with an increase in buffer layer thickness. Moreover, the strain distribution in two-step grown STO films becomes more homogeneous across the film thickness when compared to that in directly grown STO film. © 2014 AIP Publishing LLC.

    DOI: 10.1063/1.4892827

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  156. Controlled crystalline orientation of SrTiO<inf>3</inf> thin films grown on Pt(1 1 1)/Ti/α-Al<inf>2</inf>O<inf>3</inf>(0 0 0 1) substrates: Effect of growth temperature and Ti layer thickness

    Panomsuwan G., Takai O., Saito N.

    Applied Surface Science   Vol. 309   page: 95 - 105   2014.8

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    SrTiO3 (STO) thin films were grown on Pt(1 1 1)/Ti/α-Al2O3(0 0 0 1) substrates by ion beam sputter deposition. Growth temperature was varied between 600 and 750 °C, while Ti layer thickness was adjusted from 3 to 36 nm. Experimental results demonstrate that both the crystalline orientation and surface morphology are significantly dependent on change in the growth temperature and Ti layer thickness. From X-ray structural analysis, the STO thin films grown at 600 °C are perfectly (1 1 0)-oriented in spite of the change in Ti layer thickness. The STO thin films with a perfect (1 1 1) orientation are achievable at a sufficiently high growth temperature (≥700 °C) and a thin Ti layer (3-6 nm). Each crystalline orientation of STO thin films has a specific in-plane orientation relationship with respect to the Pt(1 1 1) layer. Flat-, rod-, and triangle-shaped grains are clearly observed from atomic force microscopy investigation, which are associated with the (1 1 0)-, (1 0 0)-, and (1 1 1)-oriented grains, respectively. Their grain orientations also show a good correlation with the X-ray structural analysis. The growth mechanism of each crystalline orientation can be described in term of surface diffusion, surface energy anisotropy, electrostatic, and role of TiOx seeds. © 2014 Elsevier B.V.

    DOI: 10.1016/j.apsusc.2014.04.186

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  157. The role of the central Fe atom in the N<inf>4</inf>-macrocyclic structure for the enhancement of oxygen reduction reaction in a heteroatom nitrogen-carbon nanosphere

    Kim D.W., Li O.L., Saito N.

    Physical Chemistry Chemical Physics   Vol. 16 ( 28 ) page: 14905 - 14911   2014.7

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    In the present work, we demonstrated the significance of a central transition metal, Fe, in a N4-macrocycle for the enhancement of ORR activity and other electrochemical properties. The catalysts were synthesized by a solution plasma process. Fe-phthalocyanine/benzene and phthalocyanine/benzene were chosen as the precursors of Fe-phthalocyanine based mesoporous carbon (FP-MCS) and phthalocyanine based mesoporous carbon (P-MCS) catalysts, respectively. The existence of Fe-N4 and N4 macrocyclic structures was confirmed by X-ray photoelectron spectroscopy. From the chemical bonding structure, FP-MCS demonstrated that the Me-N peaks increased as the amount of iron-phthalocyanine introduced in the experiment increased. The dominant active site was shifted from pyridinic nitrogen to Me-N when iron-phthalocyanine was present. The analysis of Tof-SIMS indicated that the relative intensity of FeN4Cy+ ions was approximately 50% of the total amount of ionized species of ∑FeN xCy+. Both XPS and Tof-SIMS results confirmed that the Fe-N4 site was the most favourable structure in the matrix. From CV measurements, the cathodic peak current corresponding to ORR activity slightly shifted from -0.19 V to -0.17 V when the active site changed from N4 to Fe-N4 macrocyclic structure. The current density increased more than 30% in the presence of iron. Based on the calculation of Koutecky-Levich plots, the electron transfer numbers for ORR reaction in P- and FP-MCSs were 3.25 and 3.98, respectively. These results clearly demonstrated that the presence of a Fe central ion in the N4-macrocyclic structure significantly enhanced the ORR and charge transfer number in ORR activities. © the Partner Organisations 2014.

    DOI: 10.1039/c4cp01406e

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  158. Synthesis of mono-dispersed nanofluids using solution plasma

    Heo Y., Bratescu M., Ueno T., Saito N.

    Journal of Applied Physics   Vol. 116 ( 2 )   2014.7

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    Small-sized and well-dispersed gold nanoparticles (NPs) for nanofluidics have been synthesized by electrical discharge in liquid environment using termed solution plasma processing (SPP). Electrons and the hydrogen radicals are reducing the gold ions to the neutral form in plasma gas phase and liquid phase, respectively. The gold NPs have the smallest diameter of 4.9nm when the solution temperature was kept at 20°C. Nucleation and growth theory describe the evolution of the NP diameter right after the reduction reaction in function of the system temperature, NP surface energy, dispersion energy barrier, and nucleation rate. Negative charges on the NPs surface during and after SPP generate repulsive forces among the NPs avoiding their agglomeration in solution. Increasing the average energy in the SPP determines a decrease of the zeta potential and an increase of the NPs diameter. An important enhancement of the thermal conductivity of 9.4% was measured for the synthesized nanofluids containing NPs with the smallest size. © 2014 AIP Publishing LLC.

    DOI: 10.1063/1.4887806

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  159. Growth of highly (100)-oriented SrTiO <inf>3</inf> thin films on Si(111) substrates without buffer layer

    Panomsuwan G., Takai O., Saito N.

    Journal of the American Ceramic Society   Vol. 97 ( 5 ) page: 1383 - 1385   2014.5

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    The SrTiO3 (STO) thin films were directly grown on Si(111) substrates without buffer layer by an electron-cyclotron-resonance ion beam sputter deposition. The growth temperature was varied from 700°C to 850°C, while other parameters were kept unchanged. X-ray structural analysis demonstrates that the growth temperature has a strong influence in tuning degree of (100) orientation. The STO film grown at 800°C is found to be the highest degree of (100) orientation (98%) and a strong (100) fiber texture. For the surface morphology, the development of plate-shaped grains reveals a good correlation with the change in the degree of (100) orientation. Moreover, the leakage current-voltage characteristics of the Au/STO/Si(111) metal-insulator-semiconductor capacitors are investigated and discussed in considerable detail. © 2014 The American Ceramic Society.

    DOI: 10.1111/jace.12912

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  160. Erratum: A phonon thermodynamics approach of gold nanofluids synthesized in solution plasma (Applied Physics Letters (2014) 104 (111902))

    Heo Y., Antoaneta Bratescu M., Aburaya D., Saito N.

    Applied Physics Letters   Vol. 104 ( 14 )   2014.4

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    DOI: 10.1063/1.4870525

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  161. A phonon thermodynamics approach of gold nanofluids synthesized in solution plasma

    Kang Heo Y., Antoaneta Bratescu M., Aburaya D., Saito N.

    Applied Physics Letters   Vol. 104 ( 11 )   2014.3

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    The phonon thermodynamics theory for liquids was applied to explain the thermal characteristics of gold nanofluids synthesized by a simple, one-step, and chemical-free method using an electrical discharge in a liquid environment termed solution plasma process. The specific heat capacity of nanofluids was measured with a differential scanning calorimeter using the ratio between the differential heat flow rate and the heating rate. The decrease of the specific heat capacity with 10% of gold nanofluids relative to water was explained by the decrease of Frenkel relaxation time with 22%, considering a solid-like state model of liquids. © 2014 AIP Publishing LLC.

    DOI: 10.1063/1.4868872

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  162. Depolymerization of chitosan-metal complexes via a solution plasma technique

    Pornsunthorntawee O., Katepetch C., Vanichvattanadecha C., Saito N., Rujiravanit R.

    Carbohydrate Polymers   Vol. 102 ( 1 ) page: 504 - 512   2014.2

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    Chitosan-metal complexes were depolymerized under acidic conditions using a solution plasma system. Four different types of metal ions, including Ag +, Zn2+, Cu2+, and Fe3+ ions, were added to the chitosan solution at a metal-to-chitosan molar ratio of 1:8. The depolymerization rate was affected by the types of metal ions that form complexes with chitosan. The complexation of chitosan with Cu2+ or Fe3+ ions strongly promoted the depolymerization rate of chitosan using a solution plasma treatment. However, chitosan-Ag+ and chitosan-Zn2+ complexes exhibited no change in the depolymerization rate compared to chitosan. After plasma treatment of the chitosan-metal complexes, the depolymerized chitosan products were separated into water-insoluble and water-soluble fractions. The water-soluble fraction containing low-molecular-weight chitosan was obtained in a yield of less than 57% for the depolymerization of chitosan-Fe3+ complex with the plasma treatment time of 180 min. © 2013 Elsevier Ltd. All rights reserved.

    DOI: 10.1016/j.carbpol.2013.11.025

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  163. A novel one-step synthesis of gold nanoparticles in an alginate gel matrix by solution plasma sputtering

    Watthanaphanit A., Panomsuwan G., Saito N.

    RSC Advances   Vol. 4 ( 4 ) page: 1622 - 1629   2014

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    We report a novel strategy to produce stable colloidal gold nanoparticles (AuNPs) in alginate aqueous solution which can be done in one step and without any chemicals. The AuNPs were produced by applying a voltage across a pair of gold electrodes which were immersed in alginate aqueous solution. Since the generation of AuNPs was caused by the sputtering of gold electrodes, the process was named the solution plasma sputtering (SPS) process. We utilize the alginate polymer in order to meet three important requirements: (1) to promote the generation of plasma in a liquid environment, (2) to endow biocompatibility to the AuNPs, and (3) to provide colloidal stability to the AuNPs-alginate aqueous suspensions. The alginate concentrations were varied as 0.2, 0.5, and 0.9 %w/v. The concentration-dependent effect on the particle size of AuNPs, the physical absorption property and the stability of the AuNPs-alginate suspensions were studied. Results indicate that preparation of chemical-free colloidal AuNPs-alginate aqueous suspension is successful by the SPS process. The obtained colloidal suspensions were stable and able to retain their strong plasmon absorption bands within a reasonable time period. As a consequence, this is a high-potential technique to produce AuNPs suspended in alginate aqueous solution appropriate for biomedical applications. © 2014 The Royal Society of Chemistry.

    DOI: 10.1039/c3ra45029e

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  164. Solution plasma exfoliation of graphene flakes from graphite electrodes

    Lee H., Bratescu M., Ueno T., Saito N.

    RSC Advances   Vol. 4 ( 93 ) page: 51758 - 51765   2014

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    Graphene flakes were successfully produced by a simple method named a solution plasma process. The plasma was generated between two carbon electrode tips which were immersed in distilled water. The production approach is a continuous energy accumulation induced by focusing of plasma streamers on the surface of electrodes. This focused energy produces thermal gradient zones where a proper energy level is produced. Concisely, the energy is enough to extract graphene layers from the graphite structure but not enough to break covalent C-C bonds within the graphene sheets. Optical emission spectroscopy results showed the decomposition of carbon from the graphite electrodes with different intensities for the carbon species. Transmission electron microscopy images confirmed the hexagonal honeycomb structure of the graphene flakes. Furthermore, broadening of the 2D band in the Raman spectra revealed that the graphene flakes were disordered multilayers. This journal is

    DOI: 10.1039/c4ra03253e

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  165. Solution plasma synthesis process of tungsten carbide on N-doped carbon nanocomposite with enhanced catalytic ORR activity and durability

    Kim D., Li O., Pootawang P., Saito N.

    RSC Advances   Vol. 4 ( 32 ) page: 16813 - 16819   2014

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    In this study, the enhancement of ORR activity and durability by an N-doped carbon nanocomposite on tungsten carbide (WC) nanoparticles was reported. The nanocomposite of tungsten carbide on two different carbon matrices, pure carbon matrix (WC/C) and N-doped carbon matrix (WC/N-C), was at first prepared by a simple discharge process in the mixture of benzene/dodecane and pyrrole/dodecane. The nanoparticles of tungsten carbide were formed via the sputtering effect of tungsten electrodes during discharge. The results of TEM and XRD demonstrated that tungsten carbide nanoparticles with a mean size of 6 nm were evenly dispersed on both carbon matrices. The results of cyclic voltammetry measurements showed that both obtained metal/carbon matrices promoted a significant oxygen reduction reaction (ORR) in alkaline solution. The ORR potential of tungsten carbide/carbon matrix and nitrogen-doped carbon were -0.29 V and -0.36 V, respectively. The enhancement of ORR activity in WC/N-C was attributed to the combined catalytic effects of WC and N in the carbon matrix. Although the ORR activity of WC/N-C was still incomparable with commercial Pt/C, the durability of the catalyst was significant higher than that of Pt/C in a methanol environment. The catalyst did not exhibit an evident change of initial current after 4000 s. Therefore, the inexpensive N-doped WC/C nanocomposite might be a promising and highly durable catalytic material for cathodes in fuel cell applications. © 2014 the Partner Organisations.

    DOI: 10.1039/c4ra02380c

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  166. Solution plasma synthesis of nitrogen-doped carbon nanoballs as effective metal-free electrocatalysts for oxygen reduction reaction

    Panomsuwan G., Chiba S., Saito N., Ishizaki T.

    Materials Research Society Symposium Proceedings   Vol. 1641   2014

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    Nitrogen-doped carbons nanoballs were synthesized from an organic liquid precursor (a mixture of benzene and pyrazine) by solution plasma process. After synthesis, they were further annealed at 700 and 900 °C under N2 atmosphere. The nitrogen-doped carbon nanoballs before and after thermal annealing process exhibit a similar morphological feature, and their diameters are in the range between 20 and 40 nm. With higher annealing temperature, the graphitization of the nitrogen-doped carbon nanoballs increases. For the electrocatalytic activity in an alkaline solution, the limiting current density and onset potential for the ORR activity can be significantly improved for the samples after thermal annealing at 900 °C. We anticipate that solution plasma process will be a viable alternative way for synthesizing heteroatom-doped carbon electrocatalysts for broad application in the field of fuel cells, metal-air batteries, and supercapacitors. © 2014 Materials Research Society.

    DOI: 10.1557/opl.2014.319

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  167. Charge doping of large-area graphene by gold-alloy nanoparticles

    Bratescu M., Saito N.

    Journal of Physical Chemistry C   Vol. 117 ( 50 ) page: 26804 - 26810   2013.12

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    We present a facile, one-step, and surfactant-free method for direct synthesis and loading of stable gold and gold-alloy nanoparticles (NPs) on large-area graphene using an electrical discharge in a liquid environment, termed solution plasma. We observed a charge doping of graphene by the gold NPs, which depends on the particles' chemical composition, even if the NPs contain a few percent of trivalent sp metals, such as indium (In) or gallium (Ga). Raman and electron energy loss spectroscopy (EELS) methods show that graphene is doped with electrons (n-type) in the case of gold NPs and with holes (p-type) in the case of gold-alloy NPs. The Raman band shift indicates that the amount of the transferred electrons from the gold NPs to graphene is -2 × 10 -4 electrons per unit cell. The gold-alloy NPs receive from graphene (2 and 4) × 10-5 electrons per unit cell if the gold NPs contain In and Ga, respectively. In the EELS spectra, the decrease in the intensity of the 1s-π* transition and the shift of the π* peak to higher energy confirm the depopulation of the antibonding states caused by the electron transfer from graphene to the gold-alloy NPs. © 2013 American Chemical Society.

    DOI: 10.1021/jp409368c

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  168. Functionalization of multiwalled carbon nanotubes by solution plasma processing in ammonia aqueous solution and preparation of composite material with polyamide 6

    Shirafuji T., Noguchi Y., Yamamoto T., Hieda J., Saito N., Takai O., Tsuchimoto A., Nojima K., Okabe Y.

    Japanese Journal of Applied Physics   Vol. 52 ( 12 )   2013.12

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    Solution plasma processing (SPP) has been performed on multiwalled carbon nanotubes (MWCNTs) in ammonia aqueous solution. The MWCNTs, which do not disperse in aqueous solution, uniformly dispersed after the SPP. Only 2 h was required to obtain 10 g of the dispersed MWCNTs, while 7 days and additional chemicals were required for 185mg in a previous study. The X-ray photoelectron spectroscopy and Fourier-transform infrared spectroscopy of the SPP-treated MWCNTs revealed that nitrogen- and oxygen-containing groups are formed on the MWCNTs. Serious damage to the MWCNT structure was not observed in the Raman spectrum or transmission electron microscopy images of the SPP-treated MWCNTs. The composite materials prepared using polyamide 6 with the SPP-treated MWCNTs showed better tensile, bending, and impact strength than those prepared with nontreated MWCNTs. © 2013 The Japan Society of Applied Physics.

    DOI: 10.7567/JJAP.52.125101

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  169. Gold nanoparticle synthesis using three-dimensionally integrated micro-solution plasmas

    Shirafuji T., Ueda J., Nakamura A., Cho S.P., Saito N., Takai O.

    Japanese Journal of Applied Physics   Vol. 52 ( 12 )   2013.12

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    Three-dimensionally integrated micro-solution plasmas (3D IMSPs), in which microplasmas are generated in gas bubbles in an aqueous solution held in a porous dielectric material, have been applied to gold nanoparticle synthesis. Conventional solution plasma processes require additional chemicals to increase the electrical conductivity of the aqueous solution for generating plasmas. In contrast to this, 3D IMSPs have been found to generate plasmas without such a procedure when the aqueous solution has a low electrical conductivity as in the case of HAuCl4 for gold nanoparticle synthesis. The gold nanoparticle synthesis has been confirmed through the observation of optical absorption due to the plasmon resonance at 550 nm, and also through the characterization of their size, crystallinity, and composition by transmission electron microscopy and energy dispersive X-ray spectroscopy. © 2013 The Japan Society of Applied Physics.

    DOI: 10.7567/JJAP.52.126202

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  170. Degradation of β-chitosan by solution plasma process (SPP)

    Prasertsung I., Damrongsakkul S., Saito N.

    Polymer Degradation and Stability   Vol. 98 ( 10 ) page: 2089 - 2093   2013.10

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    In this work, the solution plasma process (SPP) is used to treat β-chitosan solutions in order to induce the degradation of chitosan. The effects of solution plasma on the properties of chitosan solutions are investigated. The treatment time was varied from 0 to 300 min. The plasma-treated chitosan was characterized by the following methods; molecular weight by GPC, viscosity, crystal structure by XRD, chemical characteristics by FT-IR, solubility by UV-vis spectrophotometer, and fractional analysis. The results showed that after treatment with plasma for 15-120 min, the viscosity of the chitosan solution and apparent molecular weight of chitosans decreased remarkably, when compared to those of untreated sample. Longer treatment times had less effect on both viscosity and molecular weight of the samples. This suggested that the degradation process of chitosan occurred during plasma treatment. The XRD analysis showed that the crystallinity of chitosan was destroyed, resulting in amorphous structure. FT-IR analysis revealed that chemical structure of chitosan was not affected by solution plasma treatment. The %yield of water-soluble chitosan was increased with increasing plasma treatment time. These results implied that solution plasma process is able to induce the degradation of chitosan solutions. © 2013 Elsevier Ltd. All rights reserved.

    DOI: 10.1016/j.polymdegradstab.2013.07.001

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  171. Highly efficient treatment of industrial wastewater by solution plasma with low environmental load

    Cai L., Wu Y., Wu Y., Yamauti S., Saito N.

    Water Science and Technology   Vol. 68 ( 4 ) page: 923 - 928   2013.9

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    Advanced oxidation techniques are efficient processes to dispose of organic contaminants in industrial wastewater with low secondary pollution. The solution plasma technique was featured as an advanced oxidation technique with low secondary pollution and high efficiency. However, the solution plasma technique reported previously could only treat wastewater of less than 200 mL owing to the limited plasma generated by only one pair of electrodes. In this work, multiple pairs of electrodes were installed at the bottom of the reaction vessel to generate plasma for decomposing methylene blue trihydrate (MB) and methyl orange (MO) solutions with a batch amount of 18 L/batch. The solution plasma technique was compared with direct ozonation in decomposition of MB and MO wastewater. A surprising phenomenon is that MO was more readily decomposed than MB by using direct ozonation, whereas the removal of MO was too low, and MB was more readily decomposed than MO by using the solution plasma technique. © IWA Publishing 2013.

    DOI: 10.2166/wst.2013.321

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  172. Epitaxial growth of (111)-oriented BaTiO<inf>3</inf>/SrTiO<inf>3</inf> perovskite superlattices on Pt(111)/Ti/Al<inf>2</inf>O<inf>3</inf>(0001) substrates

    Panomsuwan G., Takai O., Saito N.

    Applied Physics Letters   Vol. 103 ( 11 )   2013.9

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    Symmetric BaTiO3/SrTiO3 (BTO/STO) superlattices (SLs) were epitaxially grown on Pt(111)/Ti/Al2O3(0001) substrates with various modulation periods (Λ = 4.8 - 48 nm) using double ion beam sputter deposition. The BTO/STO SLs exhibit high (111) orientation with two in-plane orientation variants related by a 180° rotation along the [111]Pt axis. The BTO layer is under an in-plane compressive state, whereas the STO layer is under an in-plane tensile state due to the effect of lattice mismatch. A remarkable enhancement of dielectric constant is observed for the SL with relatively small modulation period, which is attributed to both the interlayer biaxial strain effect and the Maxwell-Wagner effect. © 2013 AIP Publishing LLC.

    DOI: 10.1063/1.4820780

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  173. Generation of three-dimensionally integrated micro solution plasmas and its application to decomposition of organic contaminants in water

    Shirafuji T., Himeno Y., Saito N., Takai O.

    Journal of Photopolymer Science and Technology   Vol. 26 ( 4 ) page: 507 - 511   2013.9

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    Three-dimensionally integrated micro solution plasmas were generated in gas bubbles in porous dielectric materials filled with gas/liquid mixed medium. The methylene blue molecules in aqueous solution were decomposed by the treatment with the three-dimensionally integrated micro solution plasmas. Decomposition efficiency was 16 times higher than conventional solution plasma in the case of applied voltage of 5 kV. With decreasing applied voltage from 5 to 2 kV, the decomposition efficiency was improved up to 360% in comparison to that of 5 kV, while reduction in the decomposition rate was 40%. © 2013 SPST.

    DOI: 10.2494/photopolymer.26.507

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  174. Solution plasma synthesis process of carbon nano particles in organic solutions

    Li H., Kang J., Urashima K., Saito N.

    International Journal of Plasma Environmental Science and Technology   Vol. 7 ( 1 ) page: 31 - 36   2013.9

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:International Journal of Plasma Environmental Science and Technology  

    In this study, solution plasma process (SPP) was applied to synthesis carbon nanoparticles in organic solution. In the SPP process, carbon nanoparticles were formed by carbon atoms supplied by two different groups of organic solutions, sugar and aromatic hydrocarbon solutions. Glucose, sucrose and fructose were used as sugar solution, whereas benzene and toluene were applied for the aromatic hydrocarbon solutions. Within the same group of solution, the carbon structure and size distribution were found to be similar. On average, 100 ml sugar solution produced 15 mg of carbon by weight. The particles included hemisphere and sphere in shape, with a size distribution between 100 - 600 nm. For aromatic hydrocarbon solutions, 930 and 1000 mg of carbon could be generated, respectively, from 100 ml of pure toluene and benzene. The particles were spherical shape with a size distribution of 20 - 30 nm. Fundamental characteristics of plasma discharge including voltage and current waveforms, as well as active species generated were compared. The discharge in sugar solution occurred in three different phases: pre-discharge, the initiation and the formation of discharge, whereas the discharge in benzene happened in two main steps: pre-discharging and the formation of discharge. From the optical emission spectrum, the major active species obtained from sugar solution were Hα (656 nm), followed by atomic O (777 nm), Hβ (486 nm) and relatively low intensity of atomic C (247 nm). For benzene and toluene solutions, the majority active species were observed to be C2 (513 nm) and CH (431 nm) and followed by Hα (656 nm). The results indicated pure benzene might be suitable solution applied for the synthesis of carbon nanoparticles in solution plasma process.

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  175. Crosslinking of a gelatin solutions induced by pulsed electrical discharges in solutions

    Prasertsung I., Damrongsakkul S., Saito N.

    Plasma Processes and Polymers   Vol. 10 ( 9 ) page: 792 - 797   2013.9

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    This study uses discharges in solutions for the treatment of gelatin solutions in order to generate crosslinking. The effects of plasma on the properties of gelatin solutions were investigated, the latter including viscosity, amino acid contents, chemical analyses, and gel strengths. The results show that, after short duration plasma treatments (5-10 min), the viscosity of the gelatin solutions increased, while the concentration of OH · free radicals decreased. After adding ethanol to the gelatin solutions, a greater increase in viscosity, and a greater decrease in free radicals were found. This suggests that ethanol provides more free radicals that can promote the crosslinking of the gelatin solution during the plasma treatment, resulting in higher viscosity. The gel strength of the gelatin was greatly enhanced by the plasma treatment of the solution. The results regarding the free amino acid contents showed that the crosslinking degree of plasma-treated gelatin was higher than that of the untreated gelatin. FTIR measurements show that after plasma treatment, the IR bands at 1 668 and 1 558 cm-1, corresponding to the amide I and II groups of gelatin, shifted to higher wavenumbers, i.e. 1 672 and 1 564 cm-1, respectively. This suggests that crosslinking has occurred between gelatin molecules. The results show that discharges in solutions may be able to induce crosslinking reactions in the gelatin. Electrical discharges in solutions can be chemical-free, alternative crosslinking methods. Electrical discharges are investigated for the treatment of gelatin solutions as potential crosslinking, non-toxic methods. Plasmas were found to induce crosslinking of gelatin molecules, as demonstrated by the increased viscosity, decreased free amino contents, and increased gel strength. The addition of ethanol in gelatin solutions enhanced the crosslinking; this is because ethanol provides more free radicals necessary for crosslinking reactions. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

    DOI: 10.1002/ppap.201200148

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  176. Synthesis of structure-controlled carbon nano spheres by solution plasma process

    Kang J., Li O., Saito N.

    Carbon   Vol. 60   page: 292 - 298   2013.8

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    Structure-controlled carbon nanospheres (CNSs) were synthesized by an innovative plasma in liquid method, termed solution plasma processing (SPP). CNSs were formed by using benzene as a carbon precursor. Typically, 500 mg of CNSs were obtained from 100 ml of benzene with 20 min of treatment. The average diameters of CNSs increased from 20 to 100 nm when the pulse frequency of the bipolar power supply adjusted from 25 to 65 kHz. The TEM images showed that CNSs synthesized at 25-50 kHz consisted of amorphous carbon, while CNSs generated at 65 kHz were composed of continuous short range graphite with turbostratic structure. X-ray diffraction (XRD) patterns and TEM images showed that CNSs synthesized at 25-50 kHz had a low graphitization degree, while CNSs synthesized at 65 kHz consisted of graphite sheets with regular and ordering structure in basal planes. The increase of D/G intensity ratio in Raman spectroscopy confirmed the transition from amorphous carbon to nanocrystalline-graphite (NCG) with increasing pulse frequency. The resistivity of CNSs also increased with increasing pulse frequency. CNSs synthesized at 65 kHz have shown similar degree of resistivity as other commercial carbon black materials. © 2013 Elsevier Ltd. All rights reserved.

    DOI: 10.1016/j.carbon.2013.04.040

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  177. A simple synthesis method for nano-metal catalyst supported on mesoporous carbon: The solution plasma process

    Kang J., Li O., Saito N.

    Nanoscale   Vol. 5 ( 15 ) page: 6874 - 6882   2013.7

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    High-electrocatalytic-activity noble nanoparticles (NPs) supported on carbon nanoballs (CNBs) were synthesized using an innovative plasma-in-liquid method, which is known as solution plasma processing (SPP). This technique uses a one-step method for the synthesis of NPs on carbon materials. CNBs are formed using benzene as a carbon precursor while gold (Au) or platinum (Pt) nanoparticles are generated instantaneously via sputtering from metal electrodes. The synthesized NP/CNBs were annealed at 850 °C in order to increase the conductivity of the material. The results of structural characterizations reveal that the Au and Pt NPs are smaller than 10 nm and have a uniform size distribution, and these NPs are successfully loaded onto highly mesoporous CNBs that have an average pore diameter between 13 and 16 nm. In the results from cyclic voltammetry measurements, the Au/CNBs and Pt/CNBs show clear peaks corresponding to the oxidation and reduction features in the catalytic reactions. Apart from noble nanoparticles, SPP can also be used to synthesize various kinds of NPs including bimetallic NPs loaded on spherical carbon supports by changing the working electrodes. The proposed mechanism for the synthesis is discussed in detail. This method shows potential to be a candidate for the next-generation synthesis of NP/carbon in the future. © 2013 The Royal Society of Chemistry.

    DOI: 10.1039/c3nr01229h

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  178. One-step synthesis of gold bimetallic nanoparticles with various metal-compositions

    Bratescu M., Takai O., Saito N.

    Journal of Alloys and Compounds   Vol. 562   page: 74 - 83   2013.6

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    A rapid, one-step process for the synthesis of bimetallic nanoparticles by simultaneous metal reduction and gold erosion in an aqueous solution discharge was investigated. Gold bimetallic nanoparticles were obtained by alloying gold with various types of metals belonging to one of the following categories: divalent sp metals, trivalent sp metals, 3d or 4d metals. The composition of the various gold bimetallic nanoparticles obtained depends on electrochemical factors, charge transfer between gold and other metal, and initial concentration of metal in solution. Transmission electron microscopy and energy dispersive spectroscopy show that the gold bimetallic nanoparticles were of mixed pattern, with sizes of between 5 and 20 nm. A red-shift of the surface plasmon resonance band in the case of the bimetallic nanoparticles Au-Fe, Au-Ga, and Au-In, and a blue-shift of the plasmon band of the Au-Ag nanoparticles was observed. In addition, the interaction of gold bimetallic nanoparticles with unpaired electrons, provided by a stable free radical molecule, was highest for those NPs obtained by alloying gold with a 3d metal. © 2013 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.jallcom.2013.02.033

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  179. Effect of polymer concentration on the depolymerization of sodium alginate by the solution plasma process

    Watthanaphanit A., Saito N.

    Polymer Degradation and Stability   Vol. 98 ( 5 ) page: 1072 - 1080   2013.5

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    Depolymerization of alginate was accessed, for the first time, by the plasma treatment in solution called solution plasma process (SPP). The process was done by applying an electrical discharge into a reactor containing sodium alginate aqueous solution. The key of the production is the generation of reactive species induced by the plasma in a liquid environment that can lead to the scission of polymer chains. Effect of polymer concentration on the SPP processing parameters and the depolymerization efficiency were studied. Three concentrations of sodium alginate solutions, i.e., 0.2, 0.5, and 0.9 %w/v, were prepared. The results showed that increasing concentration of the alginate solution decreased the applied voltage required for the generation of plasma. Optical emission spectra demonstrated that the generation of reactive species was the highest at the lowest alginate concentration (i.e. 0.2 %w/v). Therefore, molecular weight reduction of this concentration after the SPP was more remarkable than the others. The most significant species required for the depolymerization of alginate was the reactive hydrogen species. Molecular weight distributions (MWD) of the obtained low molecular weight alginates (LMALGs) for all concentrations were narrow. Furthermore, reduction trends of molecular weight and viscosity of alginate with varying operation times indicated that the depolymerization of alginate in aqueous solution by the SPP was affected by the combined contribution of two factors: (1) the amount of reactive species generated during the process and (2) the degree of chain entanglement of the polymers. © 2013 Elsevier Ltd. All rights reserved.

    DOI: 10.1016/j.polymdegradstab.2013.01.011

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  180. Solution plasma sputtering processes for the synthesis of PtAu/C catalysts for Li-Air batteries

    Terashima C., Iwai Y., Cho S.P., Ueno T., Zettsu N., Saito N., Takai O.

    International Journal of Electrochemical Science   Vol. 8 ( 4 ) page: 5407 - 5420   2013.4

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    Clean, nanosized PtAu/C catalysts were fabricated, using a simple one-step synthesis technique that involved sputtering discharge in liquid, and did not require the use of chemical species such as surfactants and/or reductants. This solution plasma sputtering was driven by a pulsed power supply, and was performed on the discharge between Pt and Au targets in a liquid dispersion of carbon black. Fine PtAu nanoparticles with an average diameter of 5.7 nm were uniformly deposited on the carbon support. The production and composition of the PtAu nanoparticles could be controlled via changes in the sputtering conditions. The Au-rich Pt19Au81/C (atomic %) catalysts provided higher specific capacity, even in carbonate-based electrolyte Li-air batteries, reducing the amount of Li2CO3 that was deposited on the bare carbon. © 2013 by ESG.

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  181. Facile fabrication of PtAu alloy clusters using solution plasma sputtering and their electrocatalytic activity

    Hu X., Shen X., Takai O., Saito N.

    Journal of Alloys and Compounds   Vol. 552   page: 351 - 355   2013.3

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    Well-crystallized PtAu alloy clusters of about 2.0 nm in mean diameter are successfully fabricated via a one-step route of solution plasma sputtering at atmospheric pressure. The solution plasma provides a novel reaction field with highly energetic state for the formation of PtAu alloy clusters. The synergetic effects of rapid energetic radicals' bombardment, atom vapor diffusion, plasma expansion and solution medium condensation resulted in the formation of PtAu alloy clusters with various relative atom amount ratios. PtAu alloy clusters are highly dispersive in water for a long time without any polymeric stabilizer. As-fabricated PtAu alloy clusters show well electrocatalytic activity. PtAu alloy clusters are easily collected and well re-dispersed in various organic solvents for various potential applications. And PtAu alloy clusters supported on carbon were successfully fabricated by a one-step route. These results imply that this novel process will have potential application in future in the design and mass production of various multifunctional metal and/or alloy clusters. © 2012 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.jallcom.2012.08.033

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  182. Fabrication and characterization of epitaxial SrTiO <inf>3</inf>/Nb-doped SrTiO <inf>3</inf> superlattices by double ECR ion beam sputter deposition

    Panomsuwan G., Takai O., Saito N.

    Vacuum   Vol. 89 ( 1 ) page: 35 - 39   2013.3

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    Epitaxial oxide superlattices (SLs) of SrTiO 3 (STO) and Nb-doped SrTiO 3(STNO) were fabricated on LaAlO 3 (LAO) (001) substrates by an ion beam sputter deposition (IBSD) system having double electron cyclotron resonance (ECR) ion guns. The [STO x/STNO y] 10 SLs were epitaxially grown at different stacking sequences (x = 6 nm, y = 1-6 nm) and maintained the periodicity z of 10. Structural properties and surface morphology are found to be strongly dependent on the STNO sublayer thickness (y). Highly strained SLs with two-dimensional growth mode is observed at smaller STNO sublayer thickness (y = 1 nm). With increasing to a critical thickness (y = 4 nm), the SLs are freely strained and transformed to three-dimensional growth mode. The results demonstrate that the double ECR-IBSD is a versatile technique for the growth of high-quality oxide SLs. © 2012 Elsevier Ltd. All rights reserved.

    DOI: 10.1016/j.vacuum.2012.08.011

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  183. Growth of highly (110)- and (111)-textured SrTiO<inf>3</inf> thin films on Pt(111)/α-Al<inf>2</inf>O<inf>3</inf>(0001) substrates by ECR ion beam sputter deposition

    Panomsuwan G., Takai O., Saito N.

    Solid State Communications   Vol. 158   page: 65 - 69   2013.3

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    SrTiO3 (STO) thin films were directly grown on Pt(111)/α-Al2O3(0001) substrates without Ti buffer layer using electron cyclotron resonance ion beam sputter deposition. Highly (110)- and (111)-textured STO films were obtained at 600 and 750 °C, respectively. The structural, morphological and electrical properties of both textured films were studied and compared. From high-resolution X-ray diffraction data and in-plane pole figure analysis, highly (110)-textured STO film was found to contain three orientation variants related by a 120°in-plane rotation, while highly (111)-textured STO film had two orientation variants related by a 180°in-plane rotation. The presence of rod- and triangular-shaped grains was observed for the (110)- and (111)-textured film surfaces, respectively. Their grain orientations were also consistent with the structural analysis. The leakage current characteristics of Pt/STO/Pt capacitors were found to follow the Schottky emission and Poole-Frenkel conduction mechanisms. A larger dielectric constant of (111)-textured film (320 at 100 kHz) was obtained in comparison with that of (110)-textured film (238 at 100 kHz) due to the effect of biaxial in-plane tensile strain and larger grain size. © 2013 Elsevier Ltd.

    DOI: 10.1016/j.ssc.2012.12.026

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  184. Nanomechanical properties of amorphous and polycrystalline SrTiO <inf>3</inf> transparent thin films prepared by ion beam sputtering

    Panomsuwan G., Takai O., Saito N.

    Journal of Materials Engineering and Performance   Vol. 22 ( 3 ) page: 863 - 868   2013.3

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    Transparent SrTiO3 thin films were deposited on glass substrates by ion beam sputtering at various substrate temperatures. The structural characteristic of the deposited films shows the transition from amorphous phase to polycrystalline phase at 600 C. The films exhibit a good transparency in the visible region (∼80-85%) and a relatively smooth surface. The calculated band gaps for amorphous and polycrystalline films were ∼4.20 and ∼3.84 eV, respectively. The refractive index of the films increases with increasing the substrate temperature, and the extinction coefficient of the films in the visible region is in the order of 10-3, indicating low optical loss. The nanomechanical properties of the films were investigated using nanoindentation technique. Young's modulus and hardness for all films are found to be increased with the increase of substrate temperature. © 2012 ASM International.

    DOI: 10.1007/s11665-012-0320-2

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  185. Discharge time dependence of a solution plasma process for colloidal copper nanoparticle synthesis and particle characteristics

    Pootawang P., Saito N., Lee S.Y.

    Nanotechnology   Vol. 24 ( 5 )   2013.2

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    In this study, we investigate a new synthetic route, termed the solution plasma process, for the synthesis of colloidal copper nanoparticles (CuNPs) in the presence of an amide and acid capping agent. Gelatin and ascorbic acid were selected as the capping agents to protect the particles against coalescence and oxidation side reaction. Using a high voltage power supply, CuNPs were rapidly formed by 1 min after the discharge. The size and shape of the CuNPs were dependent on the discharge time and were clearly influenced by the effect of the capping agents under two characteristics of the discharge medium (pH and temperature). With a long discharge time, the CuNP size tended to decrease with the formation of anisotropic particle morphologies: spherical, cubic, hexagonal, triangular and rod-like shapes. The decrease in CuNP size as a function of discharge time could be explained by the dissolution of CuNPs in a lower pH solution. After 5 min discharge the capping agent evidently allowed the protection of the synthesized CuNPs against oxidation with the presence of anisotropic CuNP shapes. It is demonstrated that the CuNP shape could be tuned from spherical to anisotropic shapes without the undesirable oxidation by adjusting the discharge time of the solution plasma. These advantages are valuable for material engineering to design the properties of Cu-based nanoparticles for the desired applications. © 2013 IOP Publishing Ltd.

    DOI: 10.1088/0957-4484/24/5/055604

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  186. Optical and mechanical properties of transparent SrTiO<inf>3</inf> thin films deposited by ECR ion beam sputter deposition

    Panomsuwan G., Takai O., Saito N.

    Physica Status Solidi (A) Applications and Materials Science   Vol. 210 ( 2 ) page: 311 - 319   2013.2

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Physica Status Solidi (A) Applications and Materials Science  

    SrTiO3 (STO) thin films have been deposited on glass substrates by electron cyclotron resonance (ECR) ion beam sputter deposition at different substrate temperatures (100-600 °C). The structural characteristics of the deposited films show a transition from amorphous phase to polycrystalline phase at 600 °C. The films exhibit good transparency with an interference pattern in the visible region and a very smooth surface without cracks. The refractive index of the films increases with an increase of the substrate temperature, and their dispersion was analyzed by a single-oscillator model. The extinction coefficient of the films in the visible region is of the order of 10 -3-10-2. The estimated values of the direct and indirect bandgap energies for the polycrystalline STO film are 3.80 and 3.32 eV, respectively. Its density is almost identical to the bulk STO single crystal, which is relatively high in comparison with those prepared by other techniques. The mechanical stability of the films is also improved with an increase of substrate temperature. Young's modulus and hardness of the polycrystalline STO film are 194.1 ± 15.5 and 22.5 ± 2.0 GPa, respectively. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

    DOI: 10.1002/pssa.201228077

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  187. Simple synthesis of platinum nanoparticles by plasma sputtering in water

    Hu X., Takai O., Saito N.

    Japanese Journal of Applied Physics   Vol. 52 ( 1 PART2 )   2013.1

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    We applied a novel method of plasma sputtering in water for simple and fast preparation of carbon-supported platinum nanoparticles at atmospheric pressure from platinum wire electrodes without using any stabilizers, chemical reductant, plasma-generating gas, or salt solution in an open system. Upon plasma sputtering, special waveforms of voltage and current were obtained using a pulsed power supply. The obtained emission spectra clarified that platinum atoms were formed in the plasma region from the electrode surface owing to bombardment of the surface by highly energetic electrons and radicals derived from plasma. Thus, carbon-supported 2 nm and highly dispersed platinum nanoparticles were successfully synthesized by this fast and simple plasma sputtering method. Highly crystallized platinum nanoparticles show good electrocatalytic activity. This plasma sputtering technique has shown a potential application to the synthesis of other metal nanoparticles. © 2013 The Japan Society of Applied Physics.

    DOI: 10.7567/JJAP.52.01AN05

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  188. Gold nanoparticles supported on SrTiO<inf>3</inf> by solution plasma sputter deposition for enhancing UV- and visible-light photocatalytic efficiency

    Panomsuwan G., Zettsu N., Saito N.

    Materials Research Society Symposium Proceedings   Vol. 1509   page: 80 - 85   2013

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    Gold (Au) nanoparticles were synthesized and deposited on the perovskite SrTiO3 (STO) via a one-step solution plasma sputter deposition (SPSD) without any reducing reagents at ambient condition. Good dispersion of the Au nanoparticles deposited on the STO surface was clearly observed. The synthesized Au nanoparticles were well-crystallized with a spherical shape and preferably exhibited multiply twinned structure. An average diameter of Au nanoparicles was estimated to be 6.1 ± 1.4 nm by transmission electron microscopy. Enhanced photocatalytic activity was found for the Au-STO when compared to the pure STO, as investigated from the degradation of methylene blue solution under ultraviolet and visible light irradiation. The SPSD seems to be a rapid and facile approach to prepare the Au nanoparticles supported on the metal oxide for photocatalytic applications. © 2013 Materials Research Society.

    DOI: 10.1557/opl.2013.729

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  189. The role of activated nitrogen species on double-folded screen nitriding process

    Kim S., Lee J., Saito N., Takai O.

    Journal of Physics: Conference Series   Vol. 417 ( 1 )   2013

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    As clean and energy saving surface hardening technology, plasma nitriding techniques have been evolved with object of higher performance in the last decades. Even though the diffusion of nitrogen inward to steel is occurred at the final step, solid diffusion from surface, energy transition from gas molecule of nitrogen to atomic or an activated state have many different steps depending on the plasma conditions, parameters and the design of each equipment. And this study made comparative on nitrogen sources transfer with conventional DC plasma nitriding and novel nitriding process using plasma diagnosis and metallurgical observation. With different vacuum pressure, gas ratio and new designed electrode (double-folded screen cathode electrode), it showed a different behavior of DC plasma nitriding including the nano-sized nitride on the outer surface of specimen due to nitrogen source of determining plasma species. In this study, plasma species was able to identify with optical emission spectroscopy (OES) studies. From these observations, we could understand better role of ions or neutral nitrogen species, like neutral nitrogen (N), N2+ and NHx radicals in plasma nitriding process with different parameters. And cutting layers of nitride specimen were showed the results due to a different species gas flow ratio or plasma conditions.

    DOI: 10.1088/1742-6596/417/1/012023

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  190. Synthesis of gold nanoparticles by solution plasma sputtering in various solvents

    Hu X., Takai O., Saito N.

    Journal of Physics: Conference Series   Vol. 417 ( 1 )   2013

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    Gold clusters (average particle size is 1.5 nm) and nanoparticles (average particle size is 3.5 nm) with spherical morphology were fabricated by solution plasma sputtering in solution medium. This process was carried out in an open system under atmospheric pressure. During plasma region, rapid energetic radicals' bombardment, atom vapour diffusion, plasma expansion and medium condensation resulted in the formation of gold nanoparticles from its electrode wires. As-fabricated gold particles have well crystalline even for less than 1 nm cluster. Gold nanoparticles with average size about 3.5 nm gave obviously surface plasmon resonance band at near 511 nm. While surface plasmon resonance band was disappearing for 1.5 nm-cluster formed in liquid nitrogen.

    DOI: 10.1088/1742-6596/417/1/012030

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  191. In situ preparation of gold nanoparticles in alginate gel matrix by solution plasma sputtering process

    Watthanaphanit A., Panomsuwan G., Saito N.

    Materials Research Society Symposium Proceedings   Vol. 1569   2013

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Materials Research Society Symposium Proceedings  

    The rapid synthesis of gold nanoparticles (AuNPs) was done by solution plasma sputtering (SPS) process in the presence of a biopolymer, sodium alginate. We utilized the alginate polymer in order to meet three important requirements: (1) to promote the generation of plasma in liquid environment, (2) to provide colloidal stability, and (3) to render biocompatibility to the AuNPs. The effect of sodium alginate concentration (varied as 0.2, 0.5, and 0.9 %w/v) and plasma sputtering time on the particle size and the physical absorption property of the AuNPs were studied. The results indicated that preparation of AuNPs in alginate gel matrix was successful by the SPS process in one step without any reducing agents. This technique has high potential as a novel strategy to produce AuNPs suspended in alginate aqueous solution which is suitable for biomedical application. Copyright © Materials Research Society 2013.

    DOI: 10.1557/opl.2013.766

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  192. Synthesis of Nanomaterials by Solution Plasma Processing

    Takai, O; Bratescu, MA; Ueno, T; Saito, N

    MICRO-NANO MECHATRONICS - NEW TRENDS IN MATERIAL, MEASUREMENT, CONTROL, MANUFACTURING AND THEIR APPLICATIONS IN BIOMEDICAL ENGINEERING     page: 109 - 121   2013

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    Web of Science

  193. Orientation control of textured SrTiO<inf>3</inf> thin films on platinized α-Al<inf>2</inf>O<inf>3</inf> (0 0 0 1) by an ion beam sputter deposition method

    Panomsuwan G., Takai O., Saito N.

    Journal of Physics D: Applied Physics   Vol. 45 ( 49 )   2012.12

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    SrTiO3 (STO) thin films were grown on Pt/Al2O 3 substrates without a Ti adhesion layer by an ion beam sputter deposition method in a range of growth temperatures between 600 and 750 °C. The effect of growth temperature on the film orientation was investigated by high-resolution x-ray diffraction, pole figure measurements and in-plane grazing incidence x-ray diffraction. The film orientation showed a strong dependence on the growth temperature. The films exhibited a predominant (1 1 0) orientation at a low growth temperature of 600 °C. With an increase in growth temperature to 750 °C, a highly (1 1 1)-textured STO film with two different orientation variants was achieved on the Pt/Al2O3 substrate. A narrow full-width at half-maximum of 0.12° for the rocking curve measured on 2 2 2 STO reflection and a six-fold symmetry from {1 0 0} STO and {1 1 0} STO pole figures were observed. Three-dimensional island growth mode was observed on the surfaces of all films, as investigated with an atomic force microscope. The evolution of grain shape and size was apparently found with an increase in growth temperature. The root-mean-square roughness of the STO film grown at 750 °C was raised to be about 4 nm due to the surface faceting of (1 1 1)-oriented grains. The growth mechanism of the (1 1 0)- and (1 1 1)-textured STO films on the Pt/Al2O3 substrates was also explained and discussed in detail. © 2012 IOP Publishing Ltd.

    DOI: 10.1088/0022-3727/45/49/494003

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  194. Rapid sterilization of Escherichia coli by solution plasma process

    Andreeva N., Ishizaki T., Baroch P., Saito N.

    Japanese Journal of Applied Physics   Vol. 51 ( 12 )   2012.12

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    Solution plasma (SP), which is a discharge in the liquid phase, has the potential for rapid sterilization of water without chemical agents. The discharge showed a strong sterilization performance against Escherichia coli bacteria. The decimal value (D value) of the reduction time for E. coli by this system with an electrode distance of 1.0mm was estimated to be approximately 1.0 min. Our discharge system in the liquid phase caused no physical damage to the E. coli and only a small increase in the temperature of the aqueous solution. The UV light generated by the discharge was an important factor in the sterilization of E. coli. © 2012 The Japan Society of Applied Physics.

    DOI: 10.1143/JJAP.51.126201

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  195. 15th International conference on thin films (ICTF-15)

    Takai O., Saito N., Terashima C.

    Journal of the Vacuum Society of Japan   Vol. 55 ( 10 ) page: 464 - 468   2012.11

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    DOI: 10.3131/jvsj2.55.464

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  196. Synthesis and characteristics of Ag/Pt bimetallic nanocomposites by arc-discharge solution plasma processing

    Pootawang P., Saito N., Takai O., Lee S.Y.

    Nanotechnology   Vol. 23 ( 39 )   2012.10

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    Arc discharge in solution, generated by applying a high voltage of unipolar pulsed dc to electrodes of Ag and Pt, was used as a method to form Ag/Pt bimetallic nanocomposites via electrode erosion by the effects of the electric arc at the cathode (Ag rod) and the sputtering at the anode (Pt rod). Ag/Pt bimetallic nanocomposites were formed as colloidal particles dispersed in solution via the reduction of hydrogen radicals generated during discharge without the addition of chemical precursor or reducing agent. At a discharge time of 30s, the fine bimetallic nanoparticles with a mean particle size of approximately 5nm were observed by transmission electron microscopy (TEM). With increasing discharge time, the bimetallic nanoparticle size tended to increase by forming an agglomeration. The presence of the relatively small amount of Pt dispersed in the Ag matrix could be observed by the analytical mapping mode of energy-dispersive x-ray spectroscopy and high-resolution TEM. This demonstrated that the synthesized particle was in the form of a nanocomposite. No contamination of other chemical substances was detected by x-ray photoelectron spectroscopy. Hence, solution plasma could be a clean and simple process to effectively synthesize Ag/Pt bimetallic nanocomposites and it is expected to be widely applicable in the preparation of several types of nanoparticle. © 2012 IOP Publishing Ltd.

    DOI: 10.1088/0957-4484/23/39/395602

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  197. Rapid synthesis of ordered hexagonal mesoporous silica and their incorporation with Ag nanoparticles by solution plasma

    Pootawang P., Saito N., Takai O., Lee S.Y.

    Materials Research Bulletin   Vol. 47 ( 10 ) page: 2726 - 2729   2012.10

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    Rapid synthesis of silica with ordered hexagonal mesopore arrangement was obtained using solution plasma process (SPP) by discharging the mixture of P123 triblock copolymer/TEOS in acid solution. SPP, moreover, was utilized for Ag nanoparticles (AgNPs) incorporation in silica framework as one-batch process using silver nitrate (AgNO 3) solution as precursor. The turbid silicate gel was clearly observed after discharge for 1 min and the white precipitate formed at 3 min. The mesopore with hexagonal arrangement and AgNPs were observed in mesoporous silica. Two regions of X-ray diffraction patterns (2θ < 2° and 2θ = 35-90°) corresponded to the mesoporous silica and Ag nanocrystal characteristics. Comparing with mesoporous silica prepared by a conventional sol-gel route, surface area and pore diameter of mesoporous silica prepared by solution plasma were observed to be larger. In addition, the increase in Ag loading resulted in the decrease in surface area with insignificant variation in the pore diameter of mesoporous silica. SPP could be successfully utilized not only to enhance gelation time but also to increase surface area and pore diameter of mesoporous silica. © 2012 Elsevier Ltd. All rights reserved.

    DOI: 10.1016/j.materresbull.2012.04.040

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  198. Enhanced memory window of Au/BaTiO <inf>3</inf>/SrTiO <inf>3</inf>/Si(001) MFIS structure with high c-axis orientation for non-volatile memory applications

    Panomsuwan G., Takai O., Saito N.

    Applied Physics A: Materials Science and Processing   Vol. 108 ( 2 ) page: 337 - 342   2012.8

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    Metal-ferroelectric-insulator-semiconductor (MFIS) structures with BaTiO 3 (BTO) as a ferroelectric film and SrTiO 3 (STO) as an insulating buffer layer were fabricated on p-type Si(001) substrates using an ion beam sputter deposition technique. The effect of out-of-plane orientation on the electrical properties of the MFIS structures, including leakage current density and memory window behavior, were studied using the growth of the BTO ferroelectric film on Si substrate buffered by highly c-axis-oriented and randomoriented STO buffer layers. The experimental results show that the out-of-plane orientations of the BTO films were almost identical to those of the STO buffer layers. The MFIS structure with a high c-axis orientation exhibited a maximum clockwise capacitance-voltage memory window of 1.17 V with a low leakage current of 1.05 × 10 -7 A/cm 2 at an applied voltage of 4 V, which is a significant improvement compared to the MFIS structure with a random orientation. The difference in the electrical properties of the MFIS structures with both types of orientation is discussed in detail. The results obtained from this study indicate that the Au/BTO/STO/p-Si MFIS structure with high c-axis orientation has good potential for use in non-volatile memory applications. © Springer-Verlag 2012.

    DOI: 10.1007/s00339-012-7011-6

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  199. Treatment of non-point sources by a thermal plasma system under DC partial transferred mode

    Li O.L., Guo Y., Chang J.S., Urashima K., Saito N.

    International Journal of Plasma Environmental Science and Technology   Vol. 6 ( 1 ) page: 63 - 67   2012.7

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    Stormwater from urban areas is often accompanied with a variety of chemicals such as heavy metals, phosphorus, trace organic and hydrocarbons. Thermal plasma under DC transferred mode was proposed for decontamination of sediment carried by urban stormwater. After dredging, stormwater sediment/sludge accumulated in a stormwater detention pond was spread on top of a filter and the residues were transferred to a thermal plasma reactor. The reduction of total organic carbon (TOC) is 22% on average. Sediment was melted into slag with thermal plasma treatment under DC partial transferred operating mode. After treatment, the major compositions of the original stormwater sludge (e.g. sand (SiO 2) and calcite (CaCO 3)) decreased while other compositions such as KAlSi 3O 8, Fe 3O 4, NaCl and CaSO 4 were formed. The accumulated concentrations of C xH y, CO, CO 2, NO, NO 2, H 2S and SO 2 after a twohour thermal plasma treatment were 6100, 10000, 6200, 9700, 140, 40 and 27 ppm, respectively.

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  200. Study on the combustion inhibition of poly phenylene ether alloy

    Yamashita T., Nakashima E., Takeda K., Saito N., Takai O.

    Kobunshi Ronbunshu   Vol. 69 ( 6 ) page: 297 - 299   2012.6

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    In this study, we evaluated the flame retardant properties of several chemical compounds to polyphenylene ether alloy. Some of them (metallic sulfide and a variety of carboxylate salts) are stronger than general flame retardants such as red phosphorus. Molybdenum disulfide is widely used as lubricant and sodium benzoate and disodium succinate are used as food additives. So it is a new insight that they have a significant effect on the flame retardancy of polyphenylene ether alloy. Molybdenum disulfide is a catalyst that degrades polyphenylene ether alloy. We also found a combinatorial effect when blending polyphenylene ether alloy with both molybdenum disulfide and sodium benzoate that show a stronger combustion inhibition than each single compound. ©2012, The Society of Polymer Science, Japan.

    DOI: 10.1295/koron.69.297

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  201. Preparation and wettability examinations of transparent SiO<inf>2</inf> binder-added MgF<inf>2</inf> nanoparticle coatings covered with fluoro-alkyl silane self-assembled monolayer

    Murata T., Hieda J., Saito N., Takai O.

    Applied Optics   Vol. 51 ( 13 ) page: 2298 - 2305   2012.5

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    SiO2-added MgF2 nanoparticle coatings with various surface roughness properties were formed on fused silica-glass substrates from autoclaved sols prepared at 100-180 °C. To give it hydrophobicity, we treated the samples with fluoro-alkyl silane (FAS) vapor to form self-assembled monolayers on the nanoparticle coating and we examined the wettability of the samples. The samples preserved good transparency even after the FAS treatment. The wettability examination revealed that higher autoclave temperatures produced a larger average MgF2 nanoparticle particle size, a larger surface roughness, and a higher contact angle and the roll-off angle. © 2012 Optical Society of America.

    DOI: 10.1364/AO.51.002298

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  202. Active species generated by a pulsed arc electrohydraulic discharge plasma channel in contaminated water treatments

    Li O.L., Takeuchi N., He Z., Guo Y., Yasuoka K., Chang J.S., Saito N.

    Plasma Chemistry and Plasma Processing   Vol. 32 ( 2 ) page: 343 - 358   2012.4

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    Pulsed arc electrohydraulic discharge (PAED) direct plasma technique was applied for various types of contaminated water treatment. The experimental system consists of a spark-gap switch type pulse power supply (0.5 kJ/pulse) and a 3 L stainless steel reactor with eccentrically configured rod-to-rod electrodes. The current and voltage waveforms are fundamentally different for different conductivity water. Double pulse current discharges were observed for pond water with relatively higher conductivity (637 mS/m) while a single pulse current discharge was observed for lake water with relatively lower conductivity (78 mS/m). From the optical emission spectrum and UV dosimeters, UV-A, UV-B, excited molecules and radicals including N 2*, O, H, OH, O3 etc. were observed during the discharge period. Both optical emission and UV intensities in pond water are slightly lower than lake water. The decay time of the UV-A, N 2*, OH, H and O radicals were around 0.6 ms, where the discharge period ended around 0.4 ms. The results indicate that the radicals existed longer than the discharge period. The pH, dissolved oxygen and conductivity were changed during the course of PAED treatment. The ions and radicals such as H·, O·, H +, OH· etc. generated by PAED may cause alterations density decay time and the active species in water were present for a longer period. The reduction of total organic carbon (TOC) in pond water reached 80% after 5 min of PAED treatment Based on local thermal plasma equilibrium (LTE) model, LTE thermal plasma chemical composition model for 1 mol water vapour was used to compare to present experiments. PAED discharge in contaminated pond water generated peak concentration of OH = 28% and O 2H = 0.012% mol in gas-phase and migrated to water-phase via gas-liquid interfaces generated by arc and micro-bubbles to form more stable O3, H2O 2, H2 and O 2. The model suggested that the reduction of TOC occurred in gas/plasma phases or liquid-phase side of gas liquid interfaces. © Springer Science+Business Media, LLC 2011.

    DOI: 10.1007/s11090-011-9346-8

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  203. High sensitive detection of volatile organic compounds using superhydrophobic quartz crystal microbalance

    Andreeva N., Ishizaki T., Baroch P., Saito N.

    Sensors and Actuators, B: Chemical   Vol. 164 ( 1 ) page: 15 - 21   2012.3

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    A quartz crystal microbalance (QCM) chemical sensor coated with superhydrophobic film for detecting volatile organic compounds (VOCs) such as formaldehyde and toluene under ambient conditions was developed. The superhydrophobic film was deposited by means of microwave plasma enhanced chemical vapor deposition (MPECVD). The sensitivities of QCM sensor coated with superhydrophobic film to VOCs such as formaldehyde and toluene were investigated under ambient conditions. The sensitivity of the sensor to formaldehyde and toluene was considerably improved by the superhydrophobic surface modification. The surface modification promoted microscopic texturing to the film surface and thus increased the effective specific surface area of the sensor for the adsorption of formaldehyde and toluene. In addition, the adsorption of water molecules was minimized due to the superhydrophobic film deposited on the sensor surface, thus promoting the preferential adsorption of formaldehyde and toluene molecules on the QCM sensor coated with superhydrophobic film, compared to the conventional QCM sensor. Moreover, the adsorption mechanisms of formaldehyde-water and toluene-water molecules to the superhydrophobic film were discussed. © 2012 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.snb.2012.01.051

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  204. Preparation of low molecular weight chitosan using solution plasma system

    Prasertsung I., Damrongsakkul S., Terashima C., Saito N., Takai O.

    Carbohydrate Polymers   Vol. 87 ( 4 ) page: 2745 - 2749   2012.3

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    The solution plasma system was introduced to treat chitosan solution in order to prepare low molecular weight chitosan. The plasma treatment time was varied from 0 min to 300 min. The plasma-treated chitosan was characterized including viscosity, molecular weight by GPC, and chemical characteristics by FT-IR. The results showed that after treated with plasma for 15-60 min, the viscosity of chitosan solution and apparent molecular weight of chitosans were remarkably decreased, compared to those of untreated sample. Longer treatment time had less effect on both viscosity and molecular weight of samples. Eventually, long treatment time (>180 min) showed no influence on both viscosity and apparent molecular weight. This suggested that the degradation process of chitosan occurred during plasma treatment. FTIR analysis revealed that chemical structure of chitosan was not affected by solution plasma treatment. TOF-MS results showed that chitooligosaccharides with the degree of polymerization of 2-8 were also generated by solution plasma treatment. The results suggested that solution plasma system could be a potential method for the preparation of low molecular weight chitosan and chitooligosaccharides. © 2011 Elsevier Ltd.

    DOI: 10.1016/j.carbpol.2011.11.055

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  205. Growth and characterization of highly c-axis textured SrTiO <inf>3</inf> thin films directly grown on Si(001) substrates by ion beam sputter deposition

    Panomsuwan G., Cho S., Saito N., Takai O.

    Crystal Research and Technology   Vol. 47 ( 2 ) page: 187 - 194   2012.2

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    Highly c-axis textured SrTiO 3 (STO) thin films have been directly grown on Si(001) substrates using ion beam sputter deposition technique without any buffer layer. The substrate temperature was varied, while other parameters were fixed in order to study effect of substrate temperature on morphology and texture evolution of STO films. X-ray diffraction, pole figure analysis, atomic force microscope, and high-resolution electron microscopy were used to characterize and confirm quality and texture of the STO films. The experimental results show that optimum substrate temperature to achieve highly c-axis textured films is at 700 °C. The full width at half maximum (FWHM) of 002 STO was found to be 2° and fraction of (011) orientation was as low as 1%. The surface morphology was Volmer-Weber growth mode with a small roughness ∼1 nm. The lowest leakage current density (5.8 μA/cm 2 at 2 V) and the highest dielectric constant (Îμ STO ∼ 98) were found for highly c-axis textured films grown at 700 °C. © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

    DOI: 10.1002/crat.201100573

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  206. Rapid synthesis and structural characterization of well-defined gold clusters by solution plasma sputtering

    Hu X., Cho S., Takai O., Saito N.

    Crystal Growth and Design   Vol. 12 ( 1 ) page: 119 - 123   2012.1

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    Ultrafine metal nanoparticles of a few nanometers in diameter exhibit size-dependent photonic and electric properties that are of interest for applications such as biosensors, catalysts, optics, and electronics. Chemical approaches and vacuum metal-vapor-condensation physical techniques were used to successfully synthesize gold nanoparticles. While it is difficult to obtain monodisperse and small sized gold nanoparticles without any reductant and polymer stabilizer or under vacuum conditions, in the present study, multiply twinned and near monodisperse gold clusters of diameter less than 2.0 nm were successfully fabricated for the first time by solution plasma sputtering in liquid nitrogen (LN 2) without any chemical additions (such as reductant and polymer stabilizer). Gold clusters formed in several microseconds simultaneously with solution plasma sputtering in an open system under atmospheric pressure. Gold clusters are identified to be well crystalline and multitwin-particles (MTPs) by high-resolution transmission electron microscopy. No surface plasmon resonance band was detected in the gold cluster aqueous solutions. Such MTPs with special corners and edges would be beneficial for tailoring catalytic properties at the nanoscale. The solution plasma sputtering method will have potential application in the future in the design and mass preparation of various multifunctional metal clusters. © 2011 American Chemical Society.

    DOI: 10.1021/cg2008528

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  207. Effect of Sn<sup>4+</sup> additives on the microstructure and corrosion resistance of anodic coating formed on AZ31 magnesium alloy in alkaline solution

    Salman S.A., Kuroda K., Saito N., Okido M.

    Magnesium Technology     page: 241 - 245   2012

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    Magnesium is the lightest structural metal with high specific strength and good mechanical properties. However, poor corrosion resistance limits its widespread use in many applications. Magnesium is usually treated with chromate conversion coatings. However, due to changing environmental regulations and pollution prevention requirements, a significant push exists to find new, alternative for poisonous Cr6+. Therefore, we aim to improve corrosion resistance of anodic coatings on AZ31 alloys using low cost non-chromate electrolyte. Anodizing was carried out in alkaline solutions with tin additives. The effect of tin additives on the coating film was characterized by SEM and XRD. The corrosion resistance was evaluated using anodic and cathodic polarizations and electrochemical impedance spectroscopy (EIS). Corrosion resistance property was improved with tin additives and the best anti-corrosion property was obtained with addition of 0.03 M Na 2SnO3.3H2O to anodizing solution.

    DOI: 10.1002/9781118359228.ch45

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  208. Size-controlled gold nanoparticles synthesized in solution plasma

    Bratescu M.A., Cho S.P., Takai O., Saito N.

    Journal of Physical Chemistry C   Vol. 115 ( 50 ) page: 24569 - 24576   2011.12

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    Size-controlled gold nanoparticles (NPs) have been synthesized using an electrical discharge in a liquid environment, termed solution plasma processing (SPP). The gold NPs exhibit sizes from 1 to 2 to 10 nm when the solution pH was adjusted in the range from 12 to 3, respectively. The chemical environment surrounding the gold NPs depends on the preparation conditions and determines the electrostatic interaction among the nanoparticles, which alters their final size. Information obtained from XPS analysis, ToF-SIMS mass spectra, and UV-vis absorption spectroscopy were consistent and demonstrate that the gold NPs are partially oxidized on the surface, when synthesized in a pH 12 solution, and remain surrounded by gold chloride compounds when synthesized in a pH 3 solution. Plasma diagnostics shows that a high electron density contributes to generating a larger number of hydrogen radicals, which represent the main component in the reduction process of the gold ion into the neutral form. © 2011 American Chemical Society.

    DOI: 10.1021/jp207447c

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  209. Low-temperature fabrication of bunch-shaped ZnO nanowires using a sodium hydroxide aqueous solution

    Hu X., Masuda Y., Ohji T., Saito N., Kato K.

    Journal of Nanoscience and Nanotechnology   Vol. 11 ( 12 ) page: 10935 - 10939   2011.12

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    Bunch-shaped ZnO nanowires film was successfully fabricated by the forced-hydrolysis-initiatednucleation of anhydrous zinc acetate in an aqueous solution of zinc acetate and sodium hydroxide at low temperature. X-ray diffraction and a field emission scanning electron microscope clarified their formation mechanism and morphology development. The morphology was controllable by adjusting the solution temperature and deposition time. ZnO nanowires obtained at 65 °C for 6 h have a high aspect ratio of about 106. The smaller diameter with higher aspect ratio of ZnO nanowires, the easier the formation of bunch shapes by the capillary force during the drying process. This fabrication technique indicated that bunched ZnO film was prepared at low cost, and fittable to low heat-resistance substrates such as a polymer substarte. Copyright © 2011 American Scientific Publishers All rights reserved.

    DOI: 10.1166/jnn.2011.4045

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  210. Cell adhesion behaviors on polyethylene terephthalate surface modified by surface-wave plasma-initiated graft polymerization

    Ishizaki T., Andreeva N., Saito N.

    Technical Proceedings of the 2011 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2011   Vol. 1   page: 437 - 440   2011.11

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    Hydrophilic modification of polyethylene terephthalate (PET) was successfully achieved by surface wave plasma treatment followed by graft polymerization with acrylic acid (AA) monomer. The graft reaction was confirmed by water contact angle measurements and X-ray photoelectron spectroscopy (XPS). 3T3 fibroblast cells were cultured on the AA-modified PET surface. The protein adsorption behaviors were also investigated using an optical waveguide spectroscopy.

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  211. Microstructural characterization of gold nanoparticles synthesized by solution plasma processing

    Cho S., Bratescu M., Saito N., Takai O.

    Nanotechnology   Vol. 22 ( 45 )   2011.11

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    Microstructural characteristics of gold nanoparticles (Au NPs) fabricated by solution plasma processing (SPP) in reverse micelle solutions have been studied by high-resolution transmission electron microscopy (HRTEM). The synthesized Au NPs, with an average size of 6.3 1.4nm, have different crystal characteristics; fcc single-crystalline particles, multiply twinned particles (MTPs), and incomplete MTPs (single-nanotwinned fcc configuration). The crystal structure characteristics of the Au NPs synthesized by the SPP method were analyzed and compared with similar-size Au NPs obtained by the conventional chemical reduction synthesis (CRS) method. The TEM analysis results show that the Au NPs synthesized by the CRS method have shapes and crystal structures similar to those nanoparticles obtained by the SPP method. However, from the detailed HRTEM analysis, the relative number of the Au MTPs and incomplete MTPs to the total number of the Au NPs synthesized by the SPP method was observed to be around 94%, whereas the relative number of these kinds of crystal structures fabricated by the CRS method was about 63%. It is most likely that the enhanced formation of the Au MTPs is due to the fact that the SPP method generates highly reaction-activated species under low environmental temperature conditions. © 2011 IOP Publishing Ltd.

    DOI: 10.1088/0957-4484/22/45/455701

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  212. Wettability characterization of transparent MgF<inf>2</inf> nanoparticle coatings with SiO<inf>2</inf> binder covered with fluoroalkylsilane self-assembled monolayers

    Murata T., Hieda J., Saito N., Takai O.

    Journal of Sol-Gel Science and Technology   Vol. 60 ( 2 ) page: 125 - 130   2011.11

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    SiO2-added MgF2 nanoparticle coatings with various surface roughness properties were formed on silica-glass substrates from autoclaved sols prepared at 100-180 °C. The samples were exposed to fluoro-alkyl silane (FAS) vapor to give hydrophobicity. All nanoparticle samples before FAS treatment had transmittances higher than 93% and such values were preserved even after FAS treatment. We examined root mean square roughnesses of the nanoparticle coatings with a Scanning Probe Microscope. We also examined their static and dynamic wettabilities with a contact angle meter and calculated their adhesive energies and surface free energies (SFEs). The surface roughness of the nanoparticle coating increased with the increase of the autoclave temperature. In addition, higher autoclave temperature caused increases in the sliding angle and decreases in the SFE. Interestingly, the higher the contact angle was, the larger the sliding angle was, although smaller sliding angle was expected with a larger contact angle. © 2011 Springer Science+Business Media, LLC.

    DOI: 10.1007/s10971-011-2566-9

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  213. Effect of the electrode work function on the water plasma breakdown voltage

    Miron C., Bratescu M., Saito N., Takai O.

    Current Applied Physics   Vol. 11 ( 5 SUPPL. )   2011.9

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    Experimental studies on the plasma initiated in ultrapure water between pairs of tungsten and lanthanum hexaboride electrodes have been performed. The current - voltage characteristics showed the features of a spark discharge for the both types of electrodes used in the process. The breakdown voltage depended on the work function and on the surface morphology of the electrodes. The reactive species formed in the water plasma and their emission intensity depended on the electrode material. © 2011 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.cap.2011.04.005

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  214. Redox reactions in liquid plasma during iron oxide and oxide-hydroxide nanoparticles synthesis

    Bratescu M., Saito N., Takai O.

    Current Applied Physics   Vol. 11 ( 5 SUPPL. )   2011.9

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    A new synthesis method of iron oxide and iron oxide-hydroxide nanoparticles by pulsed liquid plasma process is presented. The redox reaction rates in liquid phase depend on the relative number densities of oxygen and hydrogen atoms produced in plasma gas phase and on the injected energy per pulse. The oxidation rate was higher than the reduction one in both regimes of plasma operation as glow and arc discharge. An oxidation rate of 0.13 μg mL -1 s-1 and a reduction rate of 0.04 μg mL-1 s-1 of iron ion during the process were obtained when plasma operates in glow discharge regime. The α-Fe2O3 and β-FeO(OH) nanoparticles of 80 nm size with a rice-shape morphology can be rapidly synthesized using low energy injected in plasma. © 2011 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.cap.2011.06.007

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  215. Adhesion property of SiO<inf>x</inf>-doped Diamond-like Carbon Films Deposited on Polycarbonate by Inductively Coupled Plasma Chemical Vapor Deposition

    Baek S.M., Shirafuji T., Saito N., Takai O.

    Thin Solid Films   Vol. 519 ( 20 ) page: 6678 - 6682   2011.8

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    SiOx-DLC (diamond-like coating) films as candidates for protection coating of polymers were prepared by using a pulse-biased inductively coupled plasma chemical vapor deposition system with acetylene, tetramethylsilane and oxygen gasses. Effects of the gas composition and O 2 plasma pre-treatment on adhesion of the SiOx-DLC films were investigated. Adhesion strength of Si-DLC films (with 0% oxygen) was almost the same to that of undoped DLC films. By employing O2-plasma pre-treatment, adhesion strength of the Si-DLC films was considerably improved, while that of the undoped DLC films was not. The SiOx-DLC films with the carbon to oxygen (O/C) ratio of 0.15 showed adhesion strength as high as that of the Si-DLC films on the O2-plasma pre-treated substrate. However, further improvement of adhesion strength of the SiOx-DLC was not realized by employing the O2-plasma pre-treatment. On the other hand, the SiOx-DLC films showed favorable feature of high deposition rate and large optical band gap although higher O/C ratio (> 0.15) brought about poor adhesion strength of the films. © 2011 Elsevier B.V.

    DOI: 10.1016/j.tsf.2011.04.080

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  216. Solution plasma for template removal in mesoporous silica: PH and discharge time varying characteristics

    Pootawang P., Saito N., Takai O.

    Thin Solid Films   Vol. 519 ( 20 ) page: 7030 - 7035   2011.8

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    The evaluation of the ability of solution plasma process, SPP, depending on the pH of the discharge solution and discharge time for template removal in mesoporous silica was described. In the synthesis of mesoporous silica, ternary surfactant system containing tri-block copolymer EO20PO 69EO20 (P123), sodium dodecylbenzene sulfonate (SDBS), and 1,1,2,2,3,3,4,4,4-nonafluoro-1-butyl sulfonate (NFBS) was chemically used for synthesis under acid condition via sol-gel method then SPP was employed for template removal. The ordered 2D hexagonal arrangement was observed by the evidence of high resolution TEM and the diffraction mode of X-ray. The efficiency of SPP depending on the pH of the discharge solution and discharge time was scientifically demonstrated as a function of BET surface area. In the case of pH dependence, it was achieved that the ability of template removal in acid and base solutions was clearly higher than those of such results in neutral solution. In the term of discharge time, moreover, the percentage of template removal comparing in the result of BET surface area increased as the increase in discharge time. © 2011 Elsevier B.V.

    DOI: 10.1016/j.tsf.2011.01.213

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  217. Fabrication of transparent protective diamond-like carbon films on polymer

    Baek S.M., Shirafuji T., Saito N., Takai O.

    Japanese Journal of Applied Physics   Vol. 50 ( 8 PART 2 )   2011.8

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    Si doped hydrogenated amorphous carbon (Si-DLC) films as a candidate protection coating for polycarbonate (PC) were prepared using a pulsebiased inductively coupled plasma chemical vapor deposition (ICP-CVD) system with a gas mixture of acetylene (C2H2) and tetramethylsilane [Si(CH3)4]. The effects of Si incorporation on the structure and optical properties of the Si-DLC films were investigated. In addition, plasma pretreatments with O2, N2, and Ar gases were carried out to enhance the adhesion strength of Si-DLC films on polycarbonate. Structural characterization through Raman and X-ray photoelectron spectroscopy (XPS) analyses showed that the incorporation of Si atoms in DLC films leads to an increase in the optical band gap (Eopt) with the formation of sp3 C-Si bonds. O2 plasma pretreatment improved the strength of adhesion of the Si-DLC films to polycarbonate, while Ar and N2 plasma treatments did not. This can be explained by the formation of an activated dense interfacial layer by O2 plasma pretreatment. © 2011 The Japan Society of Applied Physics.

    DOI: 10.1143/JJAP.50.08JD08

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  218. Wettability of MgF<inf>2</inf> porous nanoparticle layers covered with fluoroalkylsilane self-assembled monolayer

    Murata T., Hieda J., Saito N., Takai O.

    Journal of the Ceramic Society of Japan   Vol. 119 ( 1391 ) page: 591 - 594   2011.7

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    MgF2 porous nanoparticle coatings with SiO2 binder were formed on glasssubstrates by solgel method. The samples were exposed to fluoro-alkyl silane (FAS) vapor and heated at 150°C to give water repellency. We measured surface roughnesses and static contact angles of water of the samples and examined the relation between surface roughnesses and contact angles. Scanning Probe Microscopy (SPM) confirmed that the FAS treatment had no effect on the surfaceroughness. In the autoclave temperature region of 100180° C, the higher the autoclave temperaturewas, the larger the surface roughness was. The sample prepared from the 100°C autoclaved sol had the minimum surface roughness of 4.1 nm and showed the minimum static contact angle of 115°. On the other hand, the sample prepared from the 180°C autoclaved sol had the maximum surface roughness of 9.5 nm and showed the maximum static contact angle of 134°. © 2011 The CeramicSociety of Japan.

    DOI: 10.2109/jcersj2.119.591

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  219. Optical diagnostic of bipolar electrical discharges in HCl, KCl, and KOH solutions

    Miron C., Bratescu M.A., Saito N., Takai O.

    Journal of Applied Physics   Vol. 109 ( 12 )   2011.6

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    In this work, the characteristics of the plasma generated in HCl, KCl, and KOH solutions were analyzed using electrical and optical diagnostic techniques. Electrical discharges were initiated between two tungsten electrodes. Current and voltage characteristics have shown the features of a spark discharge for all of the solutions used in the experiment. The reactive species identified in the optical emission spectra depended on the type of solution used to generate the plasma. The time evolution of the reactive species depended on the nature of the solution and on the polarity of the applied pulse. The absorption spectra of the OH radical (X2 → A2∑+) were acquired when the voltage pulses were applied to the electrodes, with the intensity being lower in the regions between the pulses. The OH radical density was highest for the HCl solution plasma (2 × 1017cm -3) when positive voltage pulses were applied to the electrodes. © 2011 American Institute of Physics.

    DOI: 10.1063/1.3597790

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  220. Generation of plasmas in water: Utilization of a high-frequency, low-voltage bipolar pulse power supply with impedance control

    Baroch P., Potocky S., Saito N.

    Plasma Sources Science and Technology   Vol. 20 ( 3 )   2011.6

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    Presented work focuses on the investigation and characterization of plasma discharges generated in water by newly developed bipolar pulse power supply. The main aim of our work was to solve and overcome problems with intensive arc discharge transition when the discharge is ignited and maintained by a low output impedance pulse power supply. For this purpose a novel type of bipolar pulse power supply was developed and tested. It was found that two distinguished stable modes of discharges generated in the water can be realized. Effects of water conductivity, pulse frequency and initial water temperature on the discharge properties were investigated. Optical emission spectroscopy was employed to study plasma parameters of the discharge and the correlation between the data obtained from the optical emission spectroscopy and the chemical species measured in the water was carried out. © 2011 IOP Publishing Ltd.

    DOI: 10.1088/0963-0252/20/3/034017

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  221. Corrosion Resistant Performances of Alkanoic and Phosphonic Adds Derived Self-Assembled Monolayers on Magnesium Alloy AZ31 by Vapor-Phase Method

    Ishizaki, T; Okido, M; Masuda, Y; Saito, N; Sakamoto, M

    LANGMUIR   Vol. 27 ( 10 ) page: 6009 - 6017   2011.5

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    DOI: 10.1021/la200122x

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    PubMed

  222. Analysis of organic pollutant degradation in pulsed plasma by coherent anti-Stokes Raman spectroscopy

    Bratescu M., Hieda J., Umemura T., Saito N., Takai O.

    Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films   Vol. 29 ( 3 )   2011.5

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films  

    The degradation of p -benzoquinone (p -BQ) in water was investigated by the coherent anti-Stokes Raman spectroscopy (CARS) method, in which the change of the anti-Stokes signal intensity corresponding to the vibrational transitions of the molecule is monitored during and after solution plasma processing (SPP). In the beginning of SPP treatment, the CARS signal intensity of the ring vibrational molecular transitions at 1233 and 1660 cm-1 increases under the influence of the electric field of the plasma, depending on the delay time between the plasma pulse and the laser firing pulse. At the same time, the plasma contributes to the degradation of p -BQ molecules by generating hydrogen and hydroxyl radicals, which decompose p -BQ into different carboxylic acids. After SPP, the CARS signal intensity of the vibrational bands of p -BQ ceased and the degradation of p -BQ was confirmed by UV-visible absorption spectroscopy and liquid chromatography analysis. © 2011 American Vacuum Society.

    DOI: 10.1116/1.3569035

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  223. Ag nanoparticle incorporation in mesoporous silica synthesized by solution plasma and their catalysis for oleic acid hydrogenation

    Pootawang P., Saito N., Takai O.

    Materials Letters   Vol. 65 ( 6 ) page: 1037 - 1040   2011.3

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    The incorporation of Ag nanoparticles on mesoporous silica as the supporting material and their catalysis for oleic acid hydrogenation were described in this study. The template removal and Ag nanoparticle incorporation were concurrently taken place in the novel glow discharge in a solution, namely solution plasma process under controlled conditions. With only 15 min of discharge time, Ag nanoparticles were incorporated on the mesoporous silica matrix confirmed by the evidences of XRD and TEM and the template inside mesopores was mostly removed confirmed by FTIR spectra. The hydrogenation catalysis of oleic acid was preliminarily tested using UV-VIS spectroscopy after oxidation using permanganate ions (MnO4-). It was found that the conversion was observed to be 12.83% in the butanol system and reached to 90.56% in ethanol. © 2011 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.matlet.2011.01.009

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  224. Fabrication of vertically aligned diamond whiskers from highly boron-doped diamond by oxygen plasma etching

    Terashima C., Arihara K., Okazaki S., Shichi T., Tryk D.A., Shirafuji T., Saito N., Takai O., Fujishima A.

    ACS Applied Materials and Interfaces   Vol. 3 ( 2 ) page: 177 - 182   2011.2

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    Conductive diamond whiskers were fabricated by maskless oxygen plasma etching on highly boron-doped diamond substrates. The effects of the etching conditions and the boron concentration in diamond on the whisker morphology and overall substrate coverage were investigated. High boron-doping levels (greater than 8.4×10 20 cm -3) are crucial for the formation of the nanosized, densely packed whiskers with diameter of ca. 20 nm, length of ca. 200 nm, and density of ca. 3.8 × 10 10 cm -2 under optimal oxygen plasma etching conditions (10 min at a chamber pressure of 20 Pa). Confocal Raman mapping and scanning electron microscopy illustrate that the boron distribution in the diamond surface region is consistent with the distribution of whisker sites. The boron dopant atoms in the diamond appear to lead to the initial fine column formation. This simple method could provide a facile, cost-effective means for the preparation of conductive nanostructured diamond materials for electrochemical applications as well as electron emission devices. © 2010 American Chemical Society.

    DOI: 10.1021/am1007722

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  225. Structural properties and microstructures of SrTiO<inf>3</inf>/SrTi1-xNbxO3 superlattices grown by ion beam deposition

    Panomsuwan G., Saito N., Takai O.

    Materials Science Forum   Vol. 695   page: 598 - 601   2011

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    Superlattice structure of SrTiO3 and Nb-doped SrTiO3 have been epitaxially grown on atomically flat surface of LaAlO3 substrates by ion beam deposition method. Epitaxial superlattices were grown at 800 °C in the presence of partial oxygen pressure under optimizing growth conditions. The Nb-doped SrTiO3 layers were varied from 2 to 15 unit cell thickness approximately, while SrTiO3 layers are maintained at 15 unit cell thickness with 10 periods. The superlattices with various Nb-doped SrTiO 3 layer thicknesses were investigated using X-ray diffractometer (XRD) and atomic force microscope (AFM), in order to clearly understand structural properties and surface structure, which are significant for fabrication of the high quality superlattice structure. © (2011) Trans Tech Publications.

    DOI: 10.4028/www.scientific.net/MSF.695.598

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  226. Synthesis of gold nanoparticles on petal-shaped silica by solution plasma

    Yamamoto T., Ueno T., Zettsu N., Takai O., Saito N.

    2011 Int. Symp. on Micro-NanoMechatronics and Human Science, Symp. on "COE for Education and Research of Micro-Nano Mechatronics", Symposium on "Hyper Bio Assembler for 3D Cellular System Innovation"     page: 186 - 191   2011

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:2011 Int. Symp. on Micro-NanoMechatronics and Human Science, Symp. on "COE for Education and Research of Micro-Nano Mechatronics", Symposium on "Hyper Bio Assembler for 3D Cellular System Innovation"  

    Spherical silica and gold nanoparticles were attempted to be prepared by solution plasma. The silica was prepared from the following solutions by solution plasma treatment. Those are (a) tetraethoxysilane, ethanol, water and hexadecylamine (TEOS-EtOH-H2O-HDA) system and (b) tetraethoxysilane, ethanol, water, hexade-cylamine and aurochloric acid (TEOS-EtOH-H2O-HDA-HAuCl4 ) system. In the system (a), the spherical silica was produced. While, in the system (b), gold nanoparticles supported petal-shaped silica were produced. These shapes differs from the one prepared from the conventional acid and base solutions stober method. © 2011 IEEE.

    DOI: 10.1109/MHS.2011.6102224

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  227. Attenuated total reflectance spectroscopy of coumarin organosilane molecules adsorbed on a fused silica surface

    Bratescu M., Saito N., Takai O.

    Applied Surface Science   Vol. 257 ( 5 ) page: 1792 - 1799   2010.12

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    Attenuated total reflectance (ATR) spectroscopy was used to investigate the adsorption of coumarin organosilane molecules onto a fused silica surface. The difference between the absorption spectra of the molecules on the surface and in solution was explained by the interaction of the adsorbed coumarin organosilane molecules with the hydroxyl groups on the fused silica surface. This interaction produces a perturbation of the π electron distribution and the electronic transitions of the coumarin chromophore of the organosilane molecules adsorbed on the surface. From the kinetics adsorption curves, the calculated enthalpy values of 74.8 ± 5.2 kJ mol -1 and free energy of -38.22 ± 0.70 kJ mol -1 at 23 °C indicates a chemisorption process. The high sensitivity of ATR spectroscopy allows the detection of a monolayer formed by a 10 nM concentration of coumarin organosilane molecules, which covers more than half of the maximum surface coverage at 60 °C. © 2010 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.apsusc.2010.09.019

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  228. OH production enhancement in bubbling pulsed discharges

    Lungu C., Porosnicu C., Jepu I., Chiru P., Zaroschi V., Lungu A., Saito N., Bratescu M., Takai O., Velea T., Predica V.

    AIP Conference Proceedings   Vol. 1282   page: 115 - 118   2010.12

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    The generation of active species, such as H2O2, O*, OH*, HO2*, O3, N2*, etc, produced in aqueous solutions by HV pulsed discharges was studied in order to find the most efficient way in waste water treatment taking into account that these species are almost stronger oxidizers than ozone. Plasma was generated inside gas bubbles formed by the argon, air and oxygen gas flow between the special designed electrodes. The pulse width and pulse frequency influence was studied in order to increase the efficiency of the OH active species formation. The produced active species were investigated by optical emission spectroscopy and correlated with electrical parameters of the discharges (frequency, pulse width, amplitude, and rise and decay time). © 2010 American Institute of Physics.

    DOI: 10.1063/1.3508527

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  229. A novel 3-dimensional cell culture system for embryoid bodies' formation

    Zou X., Wu Y., Zhuang D., Zha G., Saito N., Takai O.

    Proceedings - 2010 3rd International Conference on Biomedical Engineering and Informatics, BMEI 2010   Vol. 4   page: 1627 - 1632   2010.12

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Proceedings - 2010 3rd International Conference on Biomedical Engineering and Informatics, BMEI 2010  

    Nano-structured films with super hydrophobic surfaces were fabricated by microwave-plasma enhanced chemical vapor deposition (MPECVD) method. It was found that water droplets with a volume from 10 to 30 μl rolled and bounced without wetting or spreading on the surfaces of the nanostructured films (nano films). After 3 days of cultivation, aggregation of embryoid body (EB) cells from embryonic stem (ES) cells were formed as microspheres on nano films coating in petri disks. Growth of ES cells was shown to be the best on the nano films with a 150° water contact angle. The EBs derived from ES cells cultured in droplets on the nano films grew over the cultivation time until the 7 th day on which EBs began to spread out. The results showed that the nano-structured film with a super-hydrophobic surface is a useful material for obtaining EBs from undifferentiated ES cells, this is anticipated to be a stem cell source for transplantation due to their pluripotency and indefinite proliferation. ©2010 IEEE.

    DOI: 10.1109/BMEI.2010.5639591

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  230. FTIR study of methylene blue plasma degradation products through plasma treatment on water

    Shirafuji T., Hieda J., Takai O., Saito N., Morita T., Sakai O., Tachibana K.

    IEEE Region 10 Annual International Conference, Proceedings/TENCON     page: 1938 - 1942   2010.12

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:IEEE Region 10 Annual International Conference, Proceedings/TENCON  

    Plasma treatment of methylene blue solution has been performed in Ar/Air gas-mixture atmospheric pressure plasma by using a specially designed "mangrove-type" electrode. In addition to the measurements of transmittance of the solution before and after the plasma treatment, FTIR investigation of the products after the treatment has been performed for understanding chemical effects of the treatment on the methylene blue molecular structure. ©2010 IEEE.

    DOI: 10.1109/TENCON.2010.5686449

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  231. Solution plasma process for template removal in mesoporous silica synthesis

    Pootawang P., Saito N., Takai O.

    Japanese Journal of Applied Physics   Vol. 49 ( 12 )   2010.12

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    The plasma discharge in aqueous solution was scientifically studied and applied to template removal in mesoporous silica synthesis. Highly dispersed spherical mesoporous silica particles were synthesized by the ternary surfactant system containing the Pluronic P123 copolymer (EO20PO 69EO20), sodium dodecylbenzene sulfonate, and 1,1,2,2,3,3,4,4,4-nonafluoro-1-butane sulfonate, via the sol-gel method in acid solutions. The solution plasma process (SPP), instead of conventional thermal calcinations, was used to remove the template. The mechanism of the removal of the organic template occurred via oxidation by the hydroxyl radicals generated during discharge. The transformation of a mesopore structure from a disordered wormlike structure to a hexagonally arranged structure was observed by X-ray diffraction analysis and was confirmed by transmission electron microscopy. The results of the thermal analysis and functional group identification of mesoporous silica after SPP showed evidence of organic template removal. The surface area calculated using the Brunauer-Emmett-Teller (BET) theory and the mean pore diameter results could be used to evaluate the plasma efficiency, demonstrating that this method does not affect the pore size in the case of discharge in a solution of pH 3 compared with the results of thermal calcination. Hence, SPP was proved to be highly efficient for organic template removal, exhibiting short consumption time and less contamination. © 2010 The Japan Society of Applied Physics.

    DOI: 10.1143/JJAP.49.126202

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  232. Time-resolved optical emission spectroscopy in water electrical discharges

    Miron C., Bratescu M., Saito N., Takai O.

    Plasma Chemistry and Plasma Processing   Vol. 30 ( 5 ) page: 619 - 631   2010.10

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    The characteristics of the plasma initiated in ultrapure water between pairs of tungsten and tantalum electrodes were investigated by time-resolved optical emission spectroscopy. The deexcitation processes of the reactive species formed in the water plasma depended on the electrode material, but had been independent on the polarity of the applied voltage pulses. All the reactive species presented the same evolution with time and have been identified with high concentration in the emission spectra between the pulses. The current-voltage characteristics showed the features of a spark discharge for the both types of electrodes used in the process. When tantalum electrodes were used to generate the discharge, a broad emission continuum (350-940 nm) dominated the spectrum due to a transition to arc discharge. ©Springer Science+Business Media, LLC 2010.

    DOI: 10.1007/s11090-010-9248-1

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  233. Corrosion resistance and chemical stability of super-hydrophobic film deposited on magnesium alloy AZ31 by microwave plasma-enhanced chemical vapor deposition

    Ishizaki T., Hieda J., Saito N., Saito N., Takai O.

    Electrochimica Acta   Vol. 55 ( 23 ) page: 7094 - 7101   2010.9

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    A super-hydrophobic film was successfully deposited on magnesium alloy AZ31 by the microwave plasma-enhanced chemical vapor deposition (MPECVD) process. The film surface showed a static water contact angle of more than 150°. The hydrophobicity and root mean square roughness of the film surface increased with an increase in deposition time. The anticorrosion resistance of the deposited film was estimated by electrochemical impedance spectroscopy (EIS) measurements. The EIS measurements and appropriate equivalent circuit models revealed that the super-hydrophobic film considerably improved the anticorrosion resistant performance of magnesium alloy AZ31. The anticorrosion mechanism of the super-hydrophobic film was also considered. Moreover, the chemical stability of the super-hydrophobic film in acidic, neutral, and alkaline aqueous solutions was investigated. The super-hydrophobic film showed high chemical stability in acidic and neutral aqueous solutions. © 2010 Elsevier Ltd.

    DOI: 10.1016/j.electacta.2010.06.064

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  234. Oxygen gas barrier properties of hydrogenated amorphous carbon thin films deposited with a pulse-biased inductively coupled plasma chemical vapor deposition method

    Baek S., Shirafuji T., Cho S., Saito N., Takai O.

    Japanese Journal of Applied Physics   Vol. 49 ( 8 PART 2 )   2010.8

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    Hydrogenated amorphous carbon (a-C:H) films have been deposited on poly(ethylene terephthalate) (PET) films with an pulse-biased inductively coupled plasma chemical vapor deposition method using CH4 and C 2H2 gases. We have investigated the effects of the pulse-bias frequency on the oxygen transmission rate (OTR) of the a-C:H-coated PET sample, and discussed relationship between the OTR characteristics and the structure of the films based on the results of Raman and infrared absorption spectroscopy. In case of CH4 plasmas, the OTR of the sample has been reduced down to 1.12 cm3/(m2.day.atm) by increasing the bias-frequency to 2 kHz, and the structure of the a-C:H films has been modified from polymer-like to tetrahedral one. In case of C2H2 plasmas, the OTR of the samples has been 1.18 cm3/(m 2.day.atm) with the lower bias frequency of 0.5 kHz, and has not shown strong dependence on the pulse-bias frequency. This has been explained by the fact that the films prepared with C2H2 plasma can be modified to tetrahedral structures by applying the bias with the lower frequency. © 2010 The Japan Society of Applied Physics.

    DOI: 10.1143/JJAP.49.08JF10

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  235. Effect of increasing hardness on Si-containing diamond-like carbon film during tribo-test

    Kim S.G., Kim S.W., Saito N., Takai O.

    Diamond and Related Materials   Vol. 19 ( 7-9 ) page: 1017 - 1020   2010.7

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    In this study, silicon-DLC film has been especially treated by plasma-enhanced chemical vapor deposition (PECVD) process at 500 °C in the same chamber without compound-layer for enhancement of hardness and adhesion. The effects of different levels of silicon content on the silicon-containing DLC films were tested in air condition at room temperature with relative humidity using a ball-on-disk tribometer. After the wear test, Raman spectrum analysis on the tested surface of silicon DLC showed the changed structure on the surface. Especially, it has shown the increasing hardness value in proportional to increase TMS gas rate after wear test. At the same time, it was shown that ID/IG values increased higher G-peak values and positions on wear track of silicon-containing DLC surfaces. Therefore, the structure of the coated DLC surface changed between the wear-tested surface and the original surface. High silicon content DLC showed increased IG value with suddenly increased ID/IG value after the wear test. © 2010 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.diamond.2010.03.010

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  236. Fabrication and application of super-hydrophobic surface

    Takai O., Ishizaki T., Saito N.

    Toraibarojisuto/Journal of Japanese Society of Tribologists   Vol. 55 ( 4 ) page: 254 - 259   2010.6

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  237. Correlation of cell adhesive behaviors on superhydrophobic, superhydrophilic, and micropatterned superhydrophobic/superhydrophilic surfaces to their surface chemistry

    Ishizaki T., Saito N., Takai O.

    Langmuir   Vol. 26 ( 11 ) page: 8147 - 8154   2010.6

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    A micropatterned superhydrophobic/superhydrophilic surface was successfully fabricated by plasma CVD and VUV irradiation. Physicochemical properties of the superhydrophobic, superhydrophilic, and superhydrophobic/superhydrophilic surfaces were investigated. The roughness structures on the superhydrophilic surface remained intact compared to those of the superhydrophobic surface. The micropatterned superhydrophobic/superhydrophilic surface was used as a scaffold of cell culture. On the micropatterned surface, the cells attached to the superhydrophilic regions in a highly selective manner, forming circular microarrays of the cells corresponding to the pattern. On the micropatterned surface with pattern distances of 200 μm between superhydrophilic regions, the cells adhered on the superhydrophilic regions and partly extended to the neighboring cells. In contrast, when the pattern distances between the superhydrophilic regions were more than 400 μm, the cells did not extend to the neighboring cells. Cell adhesion behaviors on superhydrophobic and superhydrophilic surfaces were also examined. The cells adhered and proliferated on both superhydrophobic and superhydrophilic surfaces. However, on the superhydrophobic surface, constant contact to facilitate cell division and proliferation was required. On the other hand, the cells easily adhered and proliferated on the superhydrophilic surface immediately after seeding. These differences in cell adhesion behavior induced site-selective cell adhesion on the superhydrophilic regions. Furthermore, protein adsorption behavior that plays an important role in cell adhesion on flat hydrophobic and hydrophilic surface was also examined. The amounts of the protein adsorption on the flat hydrophilic surface were much greater than those on the flat hydrophobic surface. © 2010 American Chemical Society.

    DOI: 10.1021/la904447c

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  238. Needle electrode erosion in water plasma discharge

    Potocký S., Saito N., Takai O.

    Thin Solid Films   Vol. 518 ( 3 ) page: 918 - 923   2009.12

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    Various active species are formed by a pulsed electrohydraulic discharge. Analyses of optical emission spectra, hydrogen peroxide production and erosion of needle electrodes in the pulsed discharge in water with a pulse energy of ≈ 10 mJ were investigated in dependence on the type of plasma discharge (unbridged and bridged), the electrode material (tungsten and stainless steel) and the electrical conductivity of the solution (500, 750, 1000 and 1250 μS/cm). It was found that the OH radical emission line intensity was strongly intensified in the case of unbridged discharge mode independently on the electrode material or on solution conductivity. Hydrogen peroxide production did not depend on the electrode material and was not correlated with OH radical emission line intensity. Lower erosion rate was measured for tungsten electrodes with further decrease in the case of unbridged discharge mode of operation. Stainless steel electrodes reveal opposite characteristics. Smooth crater-like morphology was found for stainless steel and finer surface structures with protrusions for the tungsten with a smaller average crater diameter, shorter protrusion size and distribution for unbridged discharge mode of operation. © 2009 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.tsf.2009.07.172

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  239. Synthesis process of gold nanoparticles in solution plasma

    Saito N., Hieda J., Takai O.

    Thin Solid Films   Vol. 518 ( 3 ) page: 912 - 917   2009.12

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Thin Solid Films  

    We describe the dynamics of the synthesis of gold nanoparticles by a glow discharge in aqueous solutions. A pulsed power supply was used to generate discharges in the aqueous solutions. The initial [AuCl4]- ion concentration and the voltage applied between the electrodes were varied. The [AuCl4]- ion was reduced by the H radicals generated in the discharge. The reduction rates were calculated from the changes in the [AuCl4]- ion concentration during the discharge time. Dendrite-shaped nanoparticles of about 150 nm size were formed in discharge during 1 min. The pH of the solution decreased gradually with the increase of the discharge time. The decrease in pH led to the dissolution of gold nanoparticles. The reduction and the dissolution rates increased proportionately with the applied voltage. The size of the gold nanoparticles decreased at 20 nm after running the discharge during 45 min. Moreover gold nanoparticles with exotic shapes, such as triangle, pentagon, and hexagon were also observed. The particles were confirmed to be as polycrystalline gold nanoparticles by electron diffraction patterns. In summary, when the reduction rate lowered as a result of dissolution, anisotropic nanoparticles were formed and continued to grow in size in the solution. © 2009 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.tsf.2009.07.156

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  240. Solution plasma surface modification for nanocarbon-composite materials

    Hieda J., Shirafuji T., Noguchi Y., Saito N., Takai O.

    Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals   Vol. 73 ( 12 ) page: 938 - 942   2009.12

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    Surface modification of carbon nanoballs (CNBs) using a plasma in liquid phase (solution plasma) and preparation of CNB/polyamide 6 (PA6) nanocomposite were demonstrated. Reactive species such as OH radical and H2O 2 generated from solution plasma oxidized the surface of CNBs and changed into hydrophilic. Mechanical properties (modulus of elasticity in tension and flexural modulus, especially impact strength) of hydrophilic CNB/PA6 composite were improved as compared to PA6 and untreated CNB/PA6 composite. CNBs with hydrophilic surface modified by solution plasma were well-dispersed into PA6 matrix. © 2009 The Japan Institute of Metals.

    DOI: 10.2320/jinstmet.73.938

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  241. Study of protein adsorption onto a polymer film by in-situ UV attenuated total reflectance spectroscopy

    Bratescu M., Fujita S., Saito N., Takai O.

    Materials Research Society Symposium Proceedings   Vol. 1138   page: 60 - 66   2009.12

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    Our work presents results on human plasma protein adsorption onto a polyacrylic acid (PAA) film prepared via surface wave plasma (SWP) induced graft polymerization. The PAA film prepared in this manner is characterized by a carboxyl functional group and a constant contact angle in water of 35°. The adsorption kinetics of human plasma fibrinogen (HPF) and human serum albumin (HSA) proteins were measured by in-situ UV-ATR spectroscopy. The free energy of adsorption on PAA treated as well as untreated surfaces was -28 kJ M -1 and -22 kJ M-1 for HPF and HSA, respectively, regardless of surface chemistry. We determined that 14 μM and 6 μM HPF concentrations are enough to cover half of the maximum possible of surface coverage on silica and PAA film, respectively. HSA protein concentrations of 154 μM and 118 μM are enough to cover half of the maximum accessible surface of silica and PAA film, respectively. For surface treatment of implants with PAA polymer and protein, the necessary protein concentration for effective surface coverage should be known. © 2009 Materials Research Society.

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  242. Biomimetic materials processing

    Ishizaki T., Hieda J., Bratescu M.A., Saito N., Takai O.

    Proceedings of SPIE - The International Society for Optical Engineering   Vol. 7404   2009.11

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    A biomimetic super-hydrophobic/super-hydrophilic micro-patterned surface was successfully fabricated by microwave plasma enhanced chemical vapor deposition (MPECVD) and vacuum ultraviolet (VUV) light lithography. On the micropatterned surface, various site-selective immobilizations were carried out. The fluorescent polystyrene spheres and copper were deposited site-selectively on super-hydrophobic regions using electrostatic interactions. The micropatterned surface brought the discrete adhesions of E. coli and B. subtilis specifically on super-hydrophobic regions. On the other hand, NIH 3T3 fibroblast cells attached to the super-hydrophilic regions in a highly selective manner. © 2009 SPIE.

    DOI: 10.1117/12.829207

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  243. Fabrication of microtemplates for the control of bacterial immobilization

    Miyahara Y., Mitamura K., Saito N., Takai O.

    Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films   Vol. 27 ( 5 ) page: 1183 - 1187   2009.9

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    The authors described a region-selective immobilization methods of bacteria by using superhydrophobic/superhydrophilic and superhydrophobic/poly(ethylene glycol) (PEG) micropatterns for culture scaffold templates. In the case of superhydrophobic/superhydrophilic micropatterns, the superhydrophobic surface was prepared first by microwave-plasma enhanced chemical vapor deposition (MPECVD) from trimethylmethoxysilane. Then the superhydrophilic regions were fabricated by irradiating the superhydrophobic surface with vuv light through a stencil mask. In the case of the superhydrophobic/PEG micropatterned surfaces, PEG surfaces were fabricated first by chemical reaction of ester groups of p -nitrophenyl PEG with N H2 group of N H2 -terminated self assembled monolayer from n -6-hexyl-3-aminopropyltrimethoxysilane. The superhydrophobic regions were fabricated by MPECVD thorough a stencil mask. In this study four bacteria were selected from viewpoint of peptidoglycan cell wall (E. coli versus B. subtilis), extracellular polysaccharide (E.coli versus P. stutzeri, P. aeruginosa), and growth rate (P. stutzeri versus P. aeruginosa). The former micropattern brought discrete adhesions of E. coli and B. subtilis specifically on the hydrophobic regions, Furthermore, using the superhydrophobic/PEG micropattern, adhesion of bacteria expanded for E. coli, B. subtilis, P. stutzeri, and P. aeruginosa. They observed a high bacterial adhesion onto superhydrophobic surfaces and the inhibitive effect of bacterial adhesion on PEG surfaces. © 2009 American Vacuum Society.

    DOI: 10.1116/1.3179158

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  244. Surfactant-assisted fabrication of tin oxide nanowires through one-step electrochemically induced chemical deposition

    Ishizaki T., Saito N., Takai O.

    Journal of the Electrochemical Society   Vol. 156 ( 10 )   2009.9

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    Tin oxide nanowires were successfully fabricated at the potentials of -0.6 to -0.8 V from nitric acid electrolytes containing 20 mM tin dichloride, 100 mM sodium nitrate, 75 mM nitric acid, and 5 mM sodium dodecyl sulfate (SDS) through a one-step electrochemically induced chemical deposition. The addition of SDS surfactant to the nitric acid electrolyte led to a dramatic change in the shapes of the deposits, resulting in the formation of the tin oxide nanowires. Field emission scanning electron microscope and tunneling electron microscope images of the deposits showed that the diameter and the length of the tin oxide nanowires were within the range of 30-400 nm and several tens to hundreds of micrometers, respectively. X-ray diffraction and the selected area electron diffraction patterns of the deposits revealed that the tin oxide nanowire had a polycrystalline tetragonal structure. The shapes of the obtained samples changed with the SDS surfactant concentrations. The formation mechanism of the tin oxide nanowires is also discussed. © 2009 The Electrochemical Society.

    DOI: 10.1149/1.3190161

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  245. Characterization of platinum catalyst supported on carbon nanoballs prepared by solution plasma processing

    Ichin Y., Mitamura K., Saito N., Takai O.

    Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films   Vol. 27 ( 4 ) page: 826 - 830   2009.7

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    In order to improve the energy-conversion efficiency in fuel cells, the authors loaded Pt nanoparticles on carbon nanoballs (CNBs) by using solution plasma processing (SPP) involving CNB and Pt ion with a protection group. In this study, we employed poly(vinylpyrrolidone) (PVP) or sodium dodecyl sulfate (SDS) to prepare Pt nanoparticles supported on CNB (Pt/CNB) by the SPP, and the electrochemical properties as a catalyst was evaluated by cyclic voltammetry. The carbon nanoballs were prepared by thermal decomposition process of ethylene and hydrogen gases. Color of the solution changed from yellow to dark brown as synthesis time. This change indicates the improvement of dispersibility of CNB. Moreover, transmission electron microscopy images and elemental mapping images showed the Pt nanoparticles supported on CNB. A catalytic activity of the Pt/CNB in use of SDS was shown to be higher than the Pt/CNB prepared with PVP system. The SDS-containing Pt/CNB also showed the higher activity than that obtained by the conventional method. © 2009 American Vacuum Society.

    DOI: 10.1116/1.3077285

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  246. Surface modification of gold nanorods by organosilanes

    Mitamura K., Imae T., Saito N., Takai O.

    Composite Interfaces   Vol. 16 ( 4 ) page: 377 - 385   2009.7

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    Gold nanorods protected by hexadecyltrimethylammonium bromide were treated by an organosilane, aminopropyltriethoxysilane (APS) or vinyltrimethoxysilane (VS) in the presence of mercaptopropyltrimethoxysilane (MPS) serving as a binder. After the APS- or VS-treatment, a shell about 4 nm thick surrounding the nanorods was found by means of transmission electron microscopy. Its formation enabled the nanorods to be dispersed in polar media (ethanol, methanol, acetone and acetonitrile/water mixtures). © 2009 VSP.

    DOI: 10.1163/156855409X447138

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  247. Self-assembly of human plasma fibrinogens on binary organosilane monolayers with micro domains

    Lee S., Saito N., Takai O.

    Applied Surface Science   Vol. 255 ( 18 ) page: 7912 - 7917   2009.6

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    The adsorption behavior and self-assembly of human plasma fibrinogen (HPF) on binary methyl- and amino-terminated self-assembled monolayers (SAMs) were investigated by atomic force microscopy (AFM). The binary SAMs were fabricated through self-assembly mechanism of organosilane molecules. The height of domains is the domain height is 0.8 ± 0.2 nm from the AFM topographic image. It corresponds to the domain height is 0.8 ± 0.2 nm from the AFM topographic image. It corresponds to the difference between the length of the alkyl chain of octadecyltrichlorosilane (OTS) and that of n-(6-aminohexyl)aminopropyltrimethoxysilane (AHAPS). The fibrinogen solution used ultrapure water as the solvent and its pH was adjusted at 3 and 10. From the AFM results at pH 3, HPF only formed network structures on the OTS domains of the binary SAM at early immersion times, and then the network structures expanded and connected between OTS domains through the AHAPS surface at long immersion times. In this case, a few HPFs are discretely adsorbed on the AHAPS surface. However, HPF is uniformly adsorbed on the binary SAM under the other conditions of pH. © 2009 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.apsusc.2009.04.201

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  248. Highly reproducible technique for three-dimensional nanostructure fabrication via anodization scanning probe lithography

    Lee S.H., Saito N., Takai O.

    Applied Surface Science   Vol. 255 ( 16 ) page: 7302 - 7306   2009.5

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    The effects of coated materials for Si probes on the sizes of line structure by using anodization scanning probe lithography (SPL) are investigated by using atomic force microscopy (AFM). Anodization SPL was carried out on the 1-decane monolayer directly attached to hydrogen-terminated silicon. Gold-coated, diamond-coated, and uncoated Si probes were used as the SPL probes in order to fabricate line structures of silicon oxide. In the cases of Au-coated and uncoated Si probes, the widths of line structures are widely influenced by the changes of scanning rate and applied bias voltage. However, the line width fabricated by use of the diamond-coated probe maintained 15 nm under any condition of scanning rate and applied bias voltage. One of the most narrow and three-dimensional nanostructures is found to be successfully fabricated on the hydrogen-terminated Si substrates when the diamond-coated probe was used as a probe of anodization SPL. In addition, this result indicated that high reproducibility of oxide nanostructures is attainable by anodization SPL used the diamond-coated probe. © 2009.

    DOI: 10.1016/j.apsusc.2009.03.087

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  249. Adsorption of protein on polyelectrolyte brush surface

    Higuchi, A; Tatematsu, H; Fujima, T; Saito, N; Takai, O

    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY   Vol. 237   2009.3

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  250. Chemical dynamics of protein adsorption and desorption on regulated surfaces in aqueous solutions

    Saito, N; Hieda, J; Takai, O

    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY   Vol. 237   2009.3

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  251. Bioreorganization surface with hierarchical structure

    Takai, O; Saito, N; Sato, H; Miura, Y; Kobayashi, K

    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY   Vol. 237   2009.3

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  252. Effects of humidity on the friction coefficient of diamond-like carbon (DLC) coating

    Kim S.G., Cho Y.K., Jang W.S., Kim S.W., Nagahiro S., Takai O.

    Journal of the Korean Physical Society   Vol. 54 ( 3 ) page: 1228 - 1236   2009.3

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    A diamond-like Carbon (DLC) coating has been known to be a good tribological problem solver due to its low friction characteristics and high hardness. The friction coefficient values shown in the literature surveyed differ from the authors' due to different test conditions. When we plot these results and our own with the variable of humidity, the friction coefficient decreases with increasing environmental humidity. By using contact angle measurements to study the interface properties of these coatings, we conclude that this change comes from the hydrophilic and the hydrophobic properties of the surface and the eventual change of the wear mode. DLC films were deposited on SKD11 steel by using pulsed (DC PECVD) (a-CH, hydrogenated DLC, Si-containing DLC) and amorphous carbon filtered arc DLC (a-C, non-hydrogenated DLC). Deposited DLCs were tested according to humidity by using a tribometer. We used a SUJ2 (JIS standard) steel ball bearing for the counterpart of wear test. X-ray photoelectron spectroscopy (XPS), Raman spectroscopy and surface roughness testers were used for surface analysis of the DLC and the wear trace. The Raman spectra of the films showed that the carbon bonding structures changed according to the I(D)/I(G) intensity ratio for the wear trace at severe wear conditions. In normal humidity, 30-85 % RH, the DLC had a friction coefficient lower than it did in 5 % RH. In this case, the Si-containing hydrogenated DLC definitely had the lowest friction coefficient. Eventually, it also had the lowest contact angle, as expected. When we investigated two different kinds of DLCs in terms of hydrogen content, we observed the same effect of relative humidity on friction behavior.

    DOI: 10.3938/jkps.54.1228

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  253. Friction behavior of diamond-like carbon coating with relative humidity

    Kim S., Saito N., Otake N., Kim S., Takai O.

    Proceedings of the 17th IFHTSE Congress   Vol. 1   page: 373 - 376   2009

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    Owing to the intrinsic beneficial tribological properties of DLC coating, it has attracted many researcher's interest in better understanding of wear phenomena. In this study, DLC films show a tendency to decrease the friction coefficient value as the humidity increases. These results come from a change in the hydrophilic and hydrophobic properties of DLC films through the evolution of the contact angle of interface with humidity. DLC films were deposited on SKD11 steel by filtered arc DLC (a-C, non-hydrogenated DLC) and pulsed DC PECVD (a-C:H, hydrogenated DLC and Si-containing hydrogenated DLC). Wear tests of the DLC films were carried out with a ball-on- disk tribometer machine in different level of humidity. In contrast to what had been expected, the wear volume of a-C:H DLC, which has the lower friction coefficient than a-C DLC, seems important the wear were occurred through first adhesive wear type and followed by producing small-sized DLC debris between the tribology system and finally the abrasive mode. In the case of the non-hydrogenated DLC wear test at the same condition, microscopic observation showed that the final abrasive wear occurred through the sliding small-size hydrophobic debris formed between the steel counter partner and the DLC coating layer. At the same humidity condition, the Si-containing hydrogenated a-C:H DLC showed different wear behavior that was caused by hydrophilic agglomerated debris. A large area seemed to be worn away for the DLC films and eventually Fe<inf>3</inf>O<inf>4</inf> comes out with Fe<inf>3</inf>O<inf>4</inf>from the substrate. Even though, the friction coefficient of hydrogenated DLC was lower, the wear loss seemed to be more severe due to the agglomeration of debris and the wear mode shift in the dry condition evaluation of tribological characteristic of DLC cannot be done by a simple index. The other side, at the normal humidity (30-85% RH) condition, the Si-containing hydrogenated DLC showed a very low friction coefficient with small wear volume compared to the dry condition. In a similar manner the non-hydrogenated DLC showed a gradual lower friction coefficient as the humidity increased.

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  254. Morphological control of vertically self-aligned nanosheets formed on magnesium alloy by surfactant-free hydrothermal synthesis

    Ishizaki, T; Cho, SP; Saito, N

    CRYSTENGCOMM   Vol. 11 ( 11 ) page: 2338 - 2343   2009

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    DOI: 10.1039/b907490b

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  255. High frequency bipolar pulsed spark electrohydraulic discharge characteristics and plasma parameters of liquid solution plasmas

    Miron C., Chang J.S., Takeda T., Saito N., Takai O.

    GD 2008 - 17th International Conference on Gas Discharges and Their Applications     page: 489 - 492   2008.12

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    An experimental investigation has been conducted to study fundamental electrohydraulic discharge characteristics and plasma parameters of liquid solution plasmas. HF-bipolar high voltage was supplied to the rod-to-rod type plate electrodes with a few mm gap distance inside water with conductive KCl or Na2SO4 solutions. Experiments are conducted for applied maximum voltage from 1 to 6 kV, the electrode gap distances from 0.3 to 5 mm and for the operating frequency from10 to 15 kHz. Plasma parameters was determined by the optical emission spectroscopy with LTE model and compared with the discharge channel averaged plasma parameter from discharge characteristics. The results show that a stable, liquid solution plasma can be generated by HF PSED. Based on optical emission spectra, a significant hydrogen gas was generated in a spark discharge channel. Morphology of liquid solution plasma and transient plasma density behavior will be discussed in detail.

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  256. Reaction Dynamics for Gold Nanoparticles Synthesis in Solution Plasma

    Hieda J., Saito N., Takai O.

    Materials Research Society Symposium Proceedings   Vol. 1056   page: 221 - 226   2008.12

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    We describe the dynamics of the synthesis of gold nanoparticles by glow discharge in aqueous solutions. Initial [AuCl4]- concentration and the voltage applied between the electrodes were varied. Reduction rates were calculated from changes in concentration of [AuCl 4]- vs. discharge time. A pulsed power supply was used to generate discharges in the aqueous solutions. The morphology of the nanoparticles obtained was observed by transmission electron microscopy (TEM). [AuCl4]- was reduced by H radicals or electrons generated by the discharge. Dendrite-shaped nanoparticles -150 nm in size were formed after discharge for 1 mm. The pH of the solution decreased gradually with increasing discharge time. The decrease in pH led to dissolution of gold nanoparticles. The reduction and dissolution rates increased proportionately with the applied voltage. The size of gold nanoparticles decreased during discharge and was 20 nm after discharge for 45 mm. When the reduction rate lowered as a result of dissolution, anisotropic nanoparticles were formed and continued to grow in the solution. © 2008 Materials Research Society.

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  257. Fundamental electrohydraulic discharge characteristics and plasma parameters of dielectric liquid dodecane with Ar gas injections for gold nano-particle fabrications

    Hieda J., Chang J.S., Saito N., Takai O.

    2008 IEEE International Conference on Dielectric Liquids, ICDL 2008     2008.11

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:2008 IEEE International Conference on Dielectric Liquids, ICDL 2008  

    An experimental investigation has been conducted to study a fundamental electrohydraulic discharge characteristics and plasma parameters in a dielectric liquid solution with Ar gas injections. HF-bipolar high voltage was supplied to the converging angle type plate electrodes with 1mm gap distance inside dodecane with conductive salt solutions. Experiments are conducted for Ar gas flow rate from 0.1 to 1 L/min., applied maximum voltage from 10 to 60 kV for the operating frequency fromlO to 15 kHz. The results show that HF PSED can be generated relatively stable discharge even in the dielectric fluid and gold nano-particles were fabricated. Morphology of liquid solution plasma and transient plasma density behavior will be discussed in detail.

    DOI: 10.1109/ICDL.2008.4622477

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  258. Nano/Micro Patterning of Inorganic Thin Films

    Koumoto, K; Saito, N; Gao, YF; Masuda, Y; Zhu, PX

    BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN   Vol. 81 ( 11 ) page: 1337 - 1376   2008.11

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    DOI: 10.1246/bcsj.81.1337

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  259. Surface characterization on binary nano/micro-domain composed of alkyl- and amino-terminated self-assembled monolayer

    Lee S.H., Ishizaki T., Saito N., Takai O.

    Applied Surface Science   Vol. 254 ( 22 ) page: 7453 - 7458   2008.9

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    The binary alkyl- and amino-terminated self-assembled monolayers (SAMs) composed of nano/micro-sized domains was prepared though a self-assembly technique. In addition, the wetting and electrostatic property of the binary SAMs was investigated by the analysis of the static and dynamic water contact angle and zeta-potentials measurement. The binary SAMs were also characterized by atomic force microscope (AFM), Kelvin probe force microscope (KPFM) and X-ray photoelectron spectroscopy (XPS). The domains on the binary SAMs were observed in topographic and surface potential images. The height of domain and the surface potential between octadecyltrichlorosilanes (OTS)-domain and n-(6-aminohexl)aminopropyl-trimethoxysilane (AHAPS)-SAM were about 1.1 nm and -30 mV. These differences of height and surface potential correspond to the ones between OTS and AHAPS. In XPS N 1s spectra, we confirmed the formation of binary SAMs by an amino peak observed at 399.15 eV. The dynamic and the static water contact angles indicated that the wetting property of the binary SAMs was depended on the OTS domain size. In addition, static water contact angles were measured under the conditions of different pH water and zeta-potential also indicated that the electrostatic property of the binary SAMs depended on OTS domain size. Thus, these results showed that the wetting and electrostatic property on the binary SAMs could be regulated by controlling the domain size. © 2008.

    DOI: 10.1016/j.apsusc.2008.06.001

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  260. Control of site-selective adsorption reaction on a biomimetic super-hydrophilic/super-hydrophobic micropatterned template

    Ishizaki T., Sakurai H., Saito N., Takai O.

    Surface and Coatings Technology   Vol. 202 ( 22-23 ) page: 5535 - 5538   2008.8

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    A biomimetic super-hydrophobic/super-hydrophilic micropatterned template was successfully fabricated by microwave plasma-enhanced chemical vapor deposition (MPECVD) and vacuum ultraviolet (VUV) lithography. Water drops were selectively condensed on super-hydrophilic regions of the template. In the solution of pH 2.6, carboxyl-terminated fluorescent polystyrene spheres were sedimented on super-hydrophobic regions due to electrostatic attractive forces between negative -COO- and positive -CH3 groups. Cu was also deposited densely on only super-hydrophobic regions through electroless plating. From these results, we revealed that the biomimetic super-hydrophobic/super-hydrophilic micropatterned template was used as site-selective chemical reaction field. © 2008 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.surfcoat.2008.06.124

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  261. Influence of Ar gas flow rate in organosilicon plasma for the fabrication of SiO:CH thin films by PECVD method

    Yun Y., Yoshida T., Shimazu N., Nanba N., Inoue Y., Saito N., Takai O.

    Surface and Coatings Technology   Vol. 202 ( 22-23 ) page: 5259 - 5261   2008.8

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    SiO:CH films were prepared by capacitively coupled RF PECVD to investigate the dependence on Ar gas flow ratio based on plasma reactions and film properties. The introduced Ar gas flow rate increases an the amorphous carbon network, and dangling bonds or -OH terminations due to Ar ion bombardment. Moreover, Ar gas flow rate alters the dissociation reactions and leads to change the chemical bonding states and the water contact angle. © 2008 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.surfcoat.2008.06.004

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  262. Size-regulated gold nanoparticles fabricated by a discharge in reverse micelle solutions

    Hieda J., Saito N., Takai O.

    Surface and Coatings Technology   Vol. 202 ( 22-23 ) page: 5343 - 5346   2008.8

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    A discharge was applied to reverse micelle solutions, which provided constant volume nanoreactors, to synthesize size-regulated gold nanoparticles. The molar ratio of water to surfactant, W, was varied to regulate the nanoparticle size. A pulsed power supply was used to generate the discharge in the reverse micelle solutions. The applied voltage, pulse width, and frequency were 960 V, 2 μs, and 15 kHz, respectively. The synthesized gold nanoparticles were observed by transmission electron microscopy (TEM). Surface plasmon absorption band of the gold nanoparticles was measured by ultraviolet-visible (UV-Vis) spectroscopy. TEM images showed that the average particle size varied from 3.8 to 11 nm in diameter as W was increased. Thus, the size of gold nanoparticles can be regulated by the volume of water droplets in the reverse micelle solutions. Reduction of [AuCl4]- ions and formation of gold nanoparticles proceeded only inside the water droplets formed by reverse micelles. These nanoreactors regulated by reverse micelles lead to the uniform growth of gold nanoparticles. © 2008 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.surfcoat.2008.06.092

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  263. Effect of reaction temperature on growth of organosilane self-assembled monolayers

    Lee S., Ishizaki T., Saito N., Takai O.

    Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers   Vol. 47 ( 8 PART 1 ) page: 6442 - 6447   2008.8

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers  

    The effect of reaction temperature on the self-organization and growth mechanism of octadecyltrichlorosilane (OTS) self-assembled monolayers (SAM) was investigated by atomic force microscopy (AFM), grazing incidence X-ray diffraction (GIXD) measurement, Fourier transform infrared spectroscopy (FT-IR), and X-ray photoelectron spectroscopy (XPS). OTS SAM was prepared by a liquid phase method and chemical vapor deposition. In the liquid phase method, OTS SAM was prepared in the temperature range from 5 to 40 °C. In the reaction temperature range from 5 to 30 °C, OTS molecules formed domain structures early in the growth process and grew two-dimensionally on SiO2 substrates. In addition, the crystalline peaks of GIXD measurements indicated that OTS SAM prepared at lower temperatures (5-30 °C) grew in the crystalline state. Thus, "self-organization" occurred under these conditions. However, OTS SAM prepared at 40 °C showed an amorphous structure. XPS and FT-IR spectra showed that the SiO2 peak increased while reaction temperature decreased. These results indicated that the formation of a siloxane bond between OTS molecules was important for the self-organization of the OTS monolayer. In addition, FT-IR measurement indicated that the packing density of the OTS monolayer prepared at lower temperatures was higher than that prepared at higher temperatures by chemical vapor deposition. © 2008 The Japan Society of Applied Physics.

    DOI: 10.1143/JJAP.47.6442

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  264. Effects of humidity and solution age on growth of organosilane self-assembled monolayers

    Lee S., Ishizaki T., Saito N., Takai O.

    Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers   Vol. 47 ( 8 PART 1 ) page: 6416 - 6421   2008.8

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers  

    The effect of humidity on the self-organization and growth mechanism of octadecyltrichlorosilane (OTS) monolayers was investigated using an atomic force microscope (AFM), grazing incidence X-ray diffraction (GIXD), and Fourier transform IR spectroscopy (FT-IR). OTS self-assembled monolayers (SAMs) were prepared under humidity ranging from 5 to 80%. Under humidity ranging from 15 to 80%, OTS molecules produced domain structures early in the growth process that grew twodimensionally on SiO2 substrates. Also, the crystalline peaks of the obtained from the GIXD measurement indicated that OTSSAMs prepared under high humidity (15-80%) had grown in a crystalline state. Thus, "self-organization" occurred under these conditions. However, OTS-SAMs prepared under 5% humidity were in an amorphous structure. OTS-SAMs prepared at high humidity were denser than those prepared at low humidity. The domain size early in the growth process increased in proportion to the solution age. This shows that the reaction rate is governed by the hydrolysis of organosilane. On the other hand, solution age has no great influence on the density of the OTS-SAMs under conditions of more than 50% humidity. © 2008 The Japan Society of Applied Physics.

    DOI: 10.1143/JJAP.47.6416

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  265. Bipolar pulsed electrical discharges in liquid

    Baroch P., Saito N.

    IEEE Transactions on Plasma Science   Vol. 36 ( 4 PART 1 ) page: 1156 - 1157   2008.8

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    Electrical discharges in water offer a unique plasma source which can be utilized in various novel applications. These discharges are distinguished for the rapid in situ production of highly reactive species when high voltage of about 10-20 kV is applied. Images of the plasma discharges in the water, which are generated by using high-frequency bipolar pulse power supply at relatively low ignition voltages, are presented here. © 2008 IEEE.

    DOI: 10.1109/TPS.2008.924488

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  266. Morphology of high-frequency electrohydraulic discharge for liquid-solution plasmas

    Takeda T., Chang J.S., Ishizaki T., Saito N., Takai O.

    IEEE Transactions on Plasma Science   Vol. 36 ( 4 PART 1 ) page: 1158 - 1159   2008.8

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    An experimental investigation has been conducted to study the morphology of high-frequency electrohydraulic discharge for a liquid-solution plasma, where the liquid-solution plasma is currently investigated for the fabrication of nanometer-size metal particles and inactivation of bacteria. The fundamental nature and basic characteristics of this new type of plasma is relatively not well investigated. In this paper, this type of liquid-solution plasma was experimentally investigated along with discharge morphology. © 2008 IEEE.

    DOI: 10.1109/TPS.2008.925713

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  267. Exotic shapes of gold nanoparticles synthesized using plasma in aqueous solution

    Hieda J., Saito N., Takai O.

    Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films   Vol. 26 ( 4 ) page: 854 - 856   2008.7

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    Gold nanoparticles with exotic shapes, such as triangle, pentagon, and hexagon, have been synthesized by glow discharge in aqueous solutions. A pulsed power supply was used to generate discharges in the aqueous solutions. Pulse width and frequency were 2 μs and 15 kHz, respectively. Discharges were generated at applied voltages of 1600 and 3200 V. The shapes of the gold nanoparticles and electron diffraction patterns were observed by transmission electron microscopy. The nanoparticles obtained were about 20 nm in diameter. In particular, at the higher voltage of 3200 V, nanoparticles with anisotropic shapes were synthesized. In the initial stages of synthesis, diameter decreased with discharge time as the nanoparticles redissolved in the solution. After discharge for 25 min, nanoparticles with anisotropic shapes appeared. This discharge led to the generation of H2 O2 and a decrease in pH as a result of the consumption of OH radicals during the generation of H2 O2 and electron donation of H radicals to the solution. After the pH stopped decreasing, H radicals mainly reacted as a reducing agent. The decrease in pH allowed redissolution of the gold nanoparticles. The gold dust particles that were not completely dissolved acted as new seeds for nucleation. Thus, the two reaction steps, nucleation and nuclear growth, occur during the formation of gold nanoparticles with exotic shapes. © 2008 American Vacuum Society.

    DOI: 10.1116/1.2919139

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  268. Bipolar pulsed electrical discharge for decomposition of organic compounds in water

    Baroch P., Anita V., Saito N., Takai O.

    Journal of Electrostatics   Vol. 66 ( 5-6 ) page: 294 - 299   2008.5

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    This work focuses on the development of an underwater plasma source that may open new possibilities in wastewater treatment processes by enabling the operation of the discharge under relatively low discharge voltages (sub-kV region). For this purpose, two systems, based on a wire-to-wire electrode configuration: (i) with and (ii) without gas bubbling, were designed. Both systems were operated utilizing a high-frequency bipolar DC pulse power supply. Properties of generated plasma were investigated by electrical and optical emission spectroscopy methods. Subsequently, determination of generation of active species and preliminary tests on the decomposition of organic dye in aqueous solution were carried out. © 2008 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.elstat.2008.01.010

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  269. Special type of plasma dielectric barrier discharge reactor for direct ozonization of water and degradation of organic pollution

    Baroch P., Saito N., Takai O.

    Journal of Physics D: Applied Physics   Vol. 41 ( 8 )   2008.4

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    A system based on the dielectric barrier discharge (DBD) with improved discharge homogeneity, used for direct ozonization and purification of water, is presented here. A special design of the atmospheric DBD system is characterized by incorporation of a porous ceramic segment in the zone between electrodes. This porous segment was placed on the metallic electrode and served as a guide for flowing water. Due to the hydrophilic force it allowed the water to remain undisturbed by the electrical discharge. This feature enabled a reduction of the discharge gap and subsequently an increase in the intensity, stability and homogeneity of the discharge. It was observed that under such a configuration a transition from the filamentary mode to the semi-homogeneous mode of the plasma discharge could be realized. Discharge properties were investigated by the optical emission spectroscopy method and the results showed the domination of nitrogen lines in the UV-A region. Further it was observed that the system can be operated in a wide range of liquid conductivities and under negligible heat deposition to the liquid solution. Finally, the formation of dissolved ozone and hydrogen peroxide in the deionized water was measured and decomposition tests with organic dye were performed. © 2008 IOP Publishing Ltd.

    DOI: 10.1088/0022-3727/41/8/085207

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  270. Attenuated total reflectance spectroscopy of simultaneous processes: Corrosion inhibition of cuprous oxide by benzotriazole

    Bratescu M.A., Allred D.B., Saito N., Sarikaya M., Takai O.

    Applied Surface Science   Vol. 254 ( 10 ) page: 2960 - 2966   2008.3

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    Attenuated total reflectance (ATR) spectroscopy was used to perform in situ studies of the corrosion inhibition of cuprous oxide (Cu 2 O) by benzotriazole (BTA) in aqueous solution at concentrations from 1 to 20 μM. Because two separate processes occur simultaneously, that of Cu 2 O corrosion and corrosion inhibition by BTA adsorption, the spectral information was subjected to deconvolution by a conjugate gradient minimization algorithm. Under these conditions, a solution phase concentration of 7-10 μM BTA nearly completely inhibited the corrosion of Cu 2 O in deionized water. Using a Langmuir adsorption model, this represented only 25% of the maximally covered surface area. © 2007 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.apsusc.2007.10.048

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  271. Scanning probe microscopy for the analysis of composite Ti/hydrocarbon plasma polymer thin films

    Choukourov A., Grinevich A., Slavinska D., Biederman H., Saito N., Takai O.

    Surface Science   Vol. 602 ( 5 ) page: 1011 - 1019   2008.3

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    Composite Ti/hydrocarbon plasma polymer films with different Ti concentration were deposited on silicon by dc magnetron sputtering of titanium in an atmosphere of argon and hexane. As measured by Kelvin force microscopy and visco-elastic atomic force microscopy, respectively, surface potential and hardness increase with increasing Ti content. Adhesion force to silicon and to fibrinogen molecules was stronger for the Ti-rich films as evaluated from the AFM force-distance curves. Fibrinogen forms a very soft layer on these composites with part of the protein molecules embedded in the outermost region of the plasma polymer. An increase of the surface charge due to fibrinogen adsorption has been observed and attributed to positively charged αC domains of fibrinogen molecule. © 2007 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.susc.2007.12.035

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  272. Comparative study of the molecular aggregation state of alkyl organic monolayers prepared on Si and hydrogen-terminated Si substrates

    Ishizaki T., Saito N., Lee S., Takai O.

    Nanotechnology   Vol. 19 ( 5 )   2008.2

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    A comparative study of the molecular aggregation states of n-octadecyltrichlorosilane (OTS) and octadecene monolayers was carried out based on water contact angle, x-ray reflectivity (XR), grazing incidence x-ray diffraction (GIXD), and Fourier transform infrared spectroscopy (FT-IR) measurements. Water contact angle, XR, and FT-IR measurements revealed that the packing density and orientational order of the OTS were higher than those of octadecene. The OTS monolayer was in a hexagonal crystalline state with (10) spacing of 0.417 nm, whereas the octadecene monolayer was in an amorphous state. The growth mechanisms of the OTS and octadecene monolayers are also proposed. The alkyl molecular aggregation states strongly depended on the chemical bonding state at the interface between the alkyl organic molecule and the substrate surface. © IOP Publishing Ltd.

    DOI: 10.1088/0957-4484/19/05/055601

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  273. 'Fabrication and structure of alginate gel incorporating gold nanorods

    Mitamura K., Imae T., Saito N., Takai O.

    Journal of Physical Chemistry C   Vol. 112 ( 2 ) page: 416 - 422   2008.1

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    The gelation of sodium alginate incorporating gold nanorods was investigated. The hybrid gel was obtained by mixing calcium ions with a gel precursor (alginate + nanorod). The gel displayed two plasmon bands in the visible and near-infrared region. The shapes of the hybrid gel grains were controllable, like sphere, ring, and rod. Furthermore, the release of the gold nanorods from the gel phase was observed in a saline solution, accompanying the gel collapse to alginate fibers. Moreover, in the structural investigation of the hybrid gel using small-angle X-ray scattering, it was confirmed that alginate fibers were tightly condensed on the nanorod and formed a shell on it. Such condensation or shell formation resulted from the electrostatic interaction of alginate with hexadecyltrimethylammonium bromide, which protects the nanorods. The hybrid gel retained the same amount of water as the neat gel, although the water content (30 wt %) in a shell on a nanorod was far less than that (98 wt %) of bulk gel. © 2008 American Chemical Society.

    DOI: 10.1021/jp076755a

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  274. Radio frequency power dependence in formation of SiO:CH thin films by plasma-enhanced chemical vapor deposition

    Yun Y., Yoshida T., Shimazu N., Nanba N., Inoue Y., Saito N., Takai O.

    Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers   Vol. 46 ( 11 ) page: 7460 - 7464   2007.11

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    SiO:CH films were prepared by capacitively coupled radio frequency (RF) plasma-enhanced chemical vapor deposition to investigate the dependence on RF power on the basis of plasma reactions and film properties. The RF power dependence can be divided into two broad categories, the reaction-controlled regime (regime R) and the flow rate-controlled regime (regime F). In the regime R, the introduced RF power initially dissociates and recombines the trimethylmethoxysilane reactant, and leads to drastic increase in deposition rate. In the regime F, the insufficient flow of reactants saturates the deposition rate. Moreover, the extra energy dissociates and recombines the reactant drastically and heats electrons in the plasma. © 2007 The Japan Society of Applied Physics.

    DOI: 10.1143/JJAP.46.7460

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  275. Application of Ultra-Water-Repellent Surface to Cell Culture

    Ino K., Ito A., Wu Y., Saito N., Hibino E., Takai O., Honda H.

    Journal of Bioscience and Bioengineering   Vol. 104 ( 5 ) page: 420 - 423   2007.11

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    In this study, we applied an ultra-water-repellent film to cell culture. We cultured cells in droplets on the film and fabricated cell aggregates. Furthermore, we allocated cells on micropatterned surfaces consisting of ultra-water-repellent regions and cell culture-treated regions. The results show that the material is useful for cell culture. © 2007 The Society for Biotechnology, Japan.

    DOI: 10.1263/jbb.104.420

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  276. A micropatterned carbohydrate display for tissue engineering by self-assembly of heparin

    Sato H., Miura Y., Saito N., Kobayashi K., Takai O.

    Surface Science   Vol. 601 ( 18 ) page: 3871 - 3875   2007.9

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    A novel strategy to construct a fibroblast scaffold on substrates has been demonstrated via top-down photolithography and the subsequent bottom-up processes of molecular self-assembly and molecular recognition. 3-Aminopropyltrimethoxysilane (APS) self-assembled monolayer was micropatterned by photolithography. An anionic polysaccharide heparin was adsorbed selectively on the cationic APS region of the micropatterned substrate. Basic fibroblast growth factor (bFGF) was selectively bound to the displayed heparin region and then micropatterned cultivation of fibroblast cells was successful on the bFGF-heparin-APS substrate. © 2007 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.susc.2007.04.066

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  277. Electrochemical soft lithography of an 1,7-octadiene monolayer covalently linked to hydrogen-terminated silicon using scanning probe microscopy

    Lee S.H., Ishizaki T., Saito N., Takai O.

    Surface Science   Vol. 601 ( 18 ) page: 4206 - 4211   2007.9

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    Electrochemical scanning probe lithography (SPL) was carried out on a 1,7-octadiene (OD) monolayer directly attached to silicon. The chemical conversion of the OD-monolayer was investigated by Kelvin probe force microscopy (KPFM), atomic force microscopy (AFM), X-ray photoelectron spectroscopy (XPS), and by an adsorption test of amino-modified fluorescent spheres. AFM and KPFM results indicated that the electrochemical reactions induced by SPL were governed by the bias voltage applied between the tip of the scanning probe microscope (SPM) and the substrate. XPS spectra indicated that the vinyl groups on the OD monolayer were oxidized and chemically converted into carboxyl groups at bias voltages of 1-2 V. At bias voltages of more than 3 V, OD molecules on the sample surface were decomposed and silicon oxide was formed on the surface. In addition, the formation of COOH groups was confirmed by the site-selective adsorption of amino-modified fluorescent spheres. However, XPS spectra for sample surfaces scanned at negative bias voltages showed no change since the peak was generally weak. However, KFM and AFM results indicated that at bias voltages of more than -1.5 V, cyclobutane rings formed. © 2007 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.susc.2007.04.094

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  278. Localized surface plasmon resonance of silicon compounds adsorbed on silver nanoparticles

    Bratescu M., Saito N., Mori H., Takai O.

    Surface Science   Vol. 601 ( 18 ) page: 3886 - 3891   2007.9

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    A simple method to produce silver nanoparticles on a glass surface from silver nanolayer deposited by magnetron sputtering and thermal annealed is presented. Localized surface plasmon resonance of nanoparticles shows a red shift depending on the silver nanolayer thickness, the refractive index and the thickness of an ultra-thin silicon compound adsorbed on the surface. A highly enhanced Raman spectrum of the characteristic groups of a silicon compound adsorbed on the nanoparticles surface was obtained. © 2007 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.susc.2007.04.074

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  279. SPM analysis of fibrinogen adsorption on solid surfaces

    Choukourov A., Grinevich A., Saito N., Takai O.

    Surface Science   Vol. 601 ( 18 ) page: 3948 - 3951   2007.9

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    The adsorption kinetics, adhesion and orientation of human fibrinogen on solid surfaces have been studied by surface probe microscopy (SPM) and quartz crystal microbalance techniques (QCM). CF3-, NH2-terminated organo-silane self-assembled monolayers (SAM) and OH-terminated silicon dioxide have been used as model surfaces. Furthermore, the interaction of fibrinogen with nanocomposite Ti/hydrocarbon plasma polymer films (Ti/ppCH) deposited by dc magnetron sputtering has also been studied. © 2007 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.susc.2007.04.155

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  280. Probing into adsorption behavior of human plasma fibrinogen on self-assembled monolayers with different chemical properties by scanning probe microscopy

    Ishizaki T., Saito N., Sato Y., Takai O.

    Surface Science   Vol. 601 ( 18 ) page: 3861 - 3865   2007.9

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    The adsorption behaviors of fibrinogen on the self-assembled monolayers (SAMs) with different chemical properties were investigated using an atomic force microscopy (AFM). AFM images indicated that the adsorption amounts of fibrinogen molecules increased with an increase of the surface hydrophobicity. High-resolution AFM imaging revealed that the fibrinogen conformations adsorbed on the SAM surface changed with dependent on the surface chemistry. The adsorption models of fibrinogen molecules adsorbed on SAM surfaces with different chemical properties were proposed based on the high-resolution AFM images. © 2007 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.susc.2007.04.096

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  281. Local generation of carboxyl groups on an organic monolayer through chemical conversion using scanning probe anodization

    Lee S., Ishizaki T., Saito N., Takai O.

    Materials Science and Engineering C   Vol. 27 ( 5-8 SPEC. ISS. ) page: 1241 - 1246   2007.9

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Materials Science and Engineering C  

    An organic monolayer directly attached to silicon was prepared through a reaction between 1,7-octadien (OD) and hydrogen-terminated silicon. The OD-monolayer had H2C-terminated groups. The properties of OD-monolayer were evaluated by atomic force microscopy (AFM), ellipsometry and water contact angle measurements. The H2C-terminated groups were site-selectively oxidized through scanning probe anodization and ultraviolet (VUV) irradiation. The sample surfaces fabricated were evaluated by Kelvin force probe microscopy (KPFM) and X-ray photoelectron spectroscopy (XPS). Chemical conversion of functional group in the OD-monolayer was evaluated based on the surface potential change and the immobilization of fluorescence-labeled spheres onto the sample surfaces. © 2006 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.msec.2006.07.002

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  282. Fabrication and self-assembly of hydrophobic gold nanorods

    Mitamura K., Imae T., Saito N., Takai O.

    Journal of Physical Chemistry B   Vol. 111 ( 30 ) page: 8891 - 8898   2007.8

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    Hydrophobic gold nanorods were fabricated from hydrophilic gold nanorods coated with hexadecyltrimethylammonium bromide by treating with mercaptopropyltrimethoxysilane (MPS) and subsequently octadecyltrimethoxysilane (ODS). The fabrication of the hydrophobic shell went through the process of (1) binding MPS onto the nanorods, (2) hydrolysis of methoxysilanes, and (3) immobilization of ODS by dehydration condensation. The 2- or 3-D ordered structures of hydrophobic nanorods were self-assembled by the evaporation of solvent on a substrate. The aspects of 2-D assemblies were dependent on the concentration of the nanorods, as was seen in transmission electron microscopic images. At a low concentration, the nanorods assembled parallel to the substrate, whereas they stood on the substrate at a high concentration. On the other hand, in a solid of the gold nanorods, the formation of the 3-D assembly was confirmed by small-angle X-ray scattering. The assembly consisted of hexagonal arrays of the gold nanorods and their lamellar accumulation. © 2007 American Chemical Society.

    DOI: 10.1021/jp072524s

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  283. Atmospheric plasma-calcination of mesoporous tungsten oxide utilizing plasma dielectric barrier discharge

    Baroch P., Hieda J., Saito N., Takai O.

    Thin Solid Films   Vol. 515 ( 12 ) page: 4905 - 4908   2007.4

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    The fabrication of mesoporous tungsten oxide films by spin-coating method followed by an atmospheric plasma-calcination method is described and discussed here. For the calcination process the dielectric barrier discharge system generating homogenous atmospheric plasma discharge was designed and used. By this method, large surface area mesoporous films, with disordered pores of average diameter size of about 4 to 5 nm were synthesized. All the plasma-calcined films exhibit amorphous structure. The process of calcination was evaluated by FT-IR spectroscopy and in comparison with other methods a very high speed of calcination process was achieved. © 2006 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.tsf.2006.10.088

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  284. Submicron optical near-field diffraction patterns obtained by irradiation of octadecyltrimethoxysilane self-assembled monolayers with light at 157 nm

    Nae F., Saito N., Takai O.

    Thin Solid Films   Vol. 515 ( 12 ) page: 5147 - 5152   2007.4

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    Nanostructures less than 200 nm in size are created by the Fresnel diffraction of 157 nm light at the aperture margins of a photomask through proximity irradiation of an octadecyltrimethoxysilane self-assembled monolayer. Photochemical decomposition of the organic monolayer creates complex nanostructure patterns, according to the light intensity distribution at the substrate location. Dimensions and distribution of the nanostructures correlate well with the spatial distribution of the light intensity calculated using the Fresnel equations. © 2006.

    DOI: 10.1016/j.tsf.2006.10.090

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  285. Patterned hydrophobic-hydrophilic templates made from microwave-plasma enhanced chemical vapor deposited thin films

    Wu Y., Kouno M., Saito N., Andrei Nae F., Inoue Y., Takai O.

    Thin Solid Films   Vol. 515 ( 9 ) page: 4203 - 4208   2007.3

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    In the present research, nano-structured materials exhibiting super-hydrophobic behavior obtained by microwave-plasma enhanced chemical vapor deposition (MPECVD) had their surface chemical status altered through vacuum ultraviolet (VUV) light irradiation. Falling water droplets rolled and bounced without wetting or spreading over the initially super-hydrophobic surfaces. We demonstrate a surface preparation technique to create a patterned super-hydrophobic/super-hydrophilic substrate in which micropatterns with super-hydrophobic and super-hydrophilic regions were prepared through irradiation with VUV light. To confirm the method, growth of water droplets is observed in situ on such super-hydrophobic/super-hydrophilic micropatterns. We discuss the applicability of the super-hydrophobic/super-hydrophilic pattern to the bottom-up assembling of materials, like site-selective electroless Cu plating on patterned substrates made of paper and selective cell culture experiments. © 2006 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.tsf.2006.02.065

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  286. The importance of precursor molecules symmetry in the formation of self-assembled monolayers

    Lee S.H., Saito N., Takai O.

    Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers   Vol. 46 ( 3 A ) page: 1118 - 1123   2007.3

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    We investigated the role of precursors molecular symmetry in the self-assembled formation of organosilane monolayer by applying atomic force microscopy (AFM), grazing incidence X-ray diffraction (GIXD), Fourier transform infrared spectroscopy (FT-IR) and contact angle measurement. Octadencyltrichlorosilane (OTS), octadecylmethydichlorosilane (ODCS), and octadecyldimethylchlorosilane (ODMS) were used as raw materials to form organosilane monolayers. The organosilane monolayers were prepared by a liquid phase method at a reaction temperature of 5°C and an humidity in reactor of 50%. AFM observations suggested that only OTS molecules grew two-dimensionally on the Si substrate surface. In GIXD results showed these OTS molecules to be arranged in a crystalline state on the Si surface. Thus "self- organization" occurred during OTS monolayer formation process. However, in the case of ODCS and ODMS, the monolayers formed were in an amorphous state. In addition, FT-IR and water contact angle measurement indicated that the packing density of the OTS monolayer was higher than that of the ODCS and ODMS monolayers. Only when the precursor molecules had an axis where the silanol groups were in three-fold did "self-organization" occurs in the formation of the organosiloxane monolayer. © 2007 The Japan Society of Applied Physics.

    DOI: 10.1143/JJAP.46.1118

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  287. A micropatterned multifunctional carbohydrate display by an orthogonal self-assembling strategy

    Sato H., Miura Y., Saito N., Kobayashi K., Takai O.

    Biomacromolecules   Vol. 8 ( 2 ) page: 753 - 756   2007.2

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    DOI: 10.1021/bm061095l

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  288. Fabrication and characterization of ultra-water-repellent alumina-silica composite films

    Ishizaki T., Saito N., Inoue Y., Bekke M., Takai O.

    Journal of Physics D: Applied Physics   Vol. 40 ( 1 ) page: 192 - 197   2007.1

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    Ultra-water-repellent (UWR) films were prepared by microwave plasma-enhanced chemical vapour deposition using trimethylmethoxysilane and aluminium (III) diisopropoxide ethylacetoacetate (ADE) as raw materials. The film was mainly composed of silica and alumina and was apparently transparent. The film thickness was approximately 500 nm. The sample surface was treated with an organosilane in order to introduce hydrophobic groups. The hydrophobic modification led to a water contact angle of more than 150°, whose value corresponds to the UWR surface. The hardness of film with an optimized Al content was significantly improved compared with that without Al. The maximum hardness was 1.71 GPa. In consequence, we successfully prepared an UWR film in the silica-alumina system. © 2007 IOP Publishing Ltd.

    DOI: 10.1088/0022-3727/40/1/014

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  289. Behavior of various organosilicon molecules in PECVD processes for hydrocarbon-doped silicon oxide films

    Yun Y., Yoshida T., Shimazu N., Inoue Y., Saito N., Takai O.

    Solid State Phenomena   Vol. 124-126 ( PART 1 ) page: 347 - 350   2007

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    Plasma diagnosis was performed by means of optical emission spectroscopy in the plasma-enhanced chemical vapor deposition process for preparation of hydrocarbon-doped silicon oxide films. The chemical bonding states were characterized by a fourier-transform infrared spectrometer. Based on the results of the diagnosis in organosilane plasma and the chemical bonding states, a reaction model for the formation process of hydrocarbon-doped silicon oxide films was discussed. From the results of optical emission spectroscopy, we found that the oxygen atoms of methoxy groups in TMMOS molecules can be dissociated easily in the plasma and behave as a kind of oxidizing agent. Siloxane bondings in HMDSO, on the other hand, hardly expel oxygen atoms.

    DOI: 10.4028/3-908451-31-0.347

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  290. Role of carbon atoms in plasma-enhanced chemical vapor deposition for carbon nanotubes synthesis

    Bratescu M., Suda Y., Sakai Y., Saito N., Takai O.

    Thin Solid Films   Vol. 515 ( 4 ) page: 1314 - 1319   2006.12

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    The role of carbon atoms in a dc plasma-enhanced chemical vapor deposition for carbon nanotubes (CNTs) synthesis was investigated. It was observed that at 1.33 kPa pressure of CH4 gas in plasma, a high value of the ratio between the intensities of the graphite peak (G peak) and the disorder peak (D peak) in the Raman spectrum corresponds to the maximum value of the excited C number density in the vicinity of the Si substrate. It was found that a CH4 gas pressure higher than 1.33 kPa leads to an increase of the relative density of the C2, C3 molecules and the clusters, and to a decrease of the C excited atom number density in plasma. The presence of a high amount of sp2-graphite in the composition of CNTs observed in Raman spectrum was also confirmed by the measurement of the IR-active G peak at 1584 cm- 1 in the transmission spectrum. © 2006 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.tsf.2006.03.022

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  291. Degradation of bacteria using pulse plasma discharge in liquid medium

    Baroch P., Takeda T., Oda M., Saito N., Takai O.

    Conference Record of the International Power Modulator Symposium and High Voltage Workshop     page: 482 - 485   2006.12

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    The paper reports on the study of an underwater electrical pulse plasma discharge operating under relatively low discharge voltages (below 1 kV) and its utilization for degradation of bacteria contained in the liquid medium. For this purpose, a system based on wire-to-wire electrode configuration was designed. Results show the ability of the system to generate active species, observed by optical emission spectroscopy and also revealed from the change in pH of treated solution. Effective generation of these species then results in a relatively fast decomposition rate of tested organic dyes. Consequent treatment process with two types of bacteria alsoexhibits positive results showing successful and very fast decrease in bacteria population. ©2006 IEEE.

    DOI: 10.1109/MODSYM.2006.365289

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  292. Multifunctional micropatterning of glycoconjugate polymer via a orthogonal self-assembly

    Miura Y., Sato H., Kobayashi K., Saito N., Takai O.

    Polymer Preprints, Japan   Vol. 55 ( 2 ) page: 5260 - 5261   2006.12

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    We propose a novel strategy for a multiple micropatterned display of carbohydrates by orthogonal supramolecular formation. Two kinds of glycopolymer was self-assembled on the substrate by hydrophobic and electrostatic interaction. Two types of protein and cell was adsorbed on the glycopolymer due to the molecular recognition.

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  293. Rapid mass production of gold nanoaprticle from gold salts

    Yonezawa T., Oda M., Ishizaki T., Saito N., Takai O.

    Polymer Preprints, Japan   Vol. 55 ( 2 ) page: 3843 - 3844   2006.12

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    A novel rapid mass production process of gold nanoparticles by using spark discharge in solution is proposed in this study. Into AuCl4- aqueous solution, gelatin was introduced as the stabilizing reagent. Then, spark discharge at ca. 800 V was applied. The yellow solution turned into dark-red, which suggests the formation of gold nanoparticles protected by gelatin. UV-Vis spectra of the obtained dispersions indicates the complete reduction of Au3+ ions and production of gold nanoparticles. The TEM images revealed that gold nanoparticles were dispersed independently without aggregation. This process is quite unique and easy for mass production of various kinds of metal nanoparticles.

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  294. Study of alkyl organic monolayers with different molecular chain lengths directly attached to silicon

    Ishizaki T., Saito N., SunHyung L., Ishida K., Takai O.

    Langmuir   Vol. 22 ( 24 ) page: 9962 - 9966   2006.11

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    Alkyl organic monolayers with different alkyl molecular chain lengths directly attached to silicon were prepared at 160°C from 1-decene (C10), 1-dodecene (C12), 1-tetradecene (C14), 1-hexadecene (C16), and 1-octadecene (C18). These monolayers were characterized on the basis of water contact angle measurement, ellipsometry, X-ray reflectivity (XR), X-ray photoelectron spectroscopy (XPS), and grazing incidence X-ray diffraction (GIXD) to elucidate the effect of the molecular chain length on the molecular arrangement and packing density of the monolayers. Water contact angle and XPS measurements showed that C12, C14, and C16 monolayers have a comparably higher quality, while the quality of C10 and C18 monolayers is worse. GIXD revealed that the alkyl monolayers directly attached to the Si were all amorphously structured regardless of their alkyl chain length. The amorphous structure of the alkyl monolayers could be attributed to the rigid Si-C bonding, low quality of hydrogen-terminated silicon substrate, and/or low mobility of physisorbed molecules. © 2006 American Chemical Society.

    DOI: 10.1021/la052342u

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  295. Treatment of immobilized collagen on poly(tetrafluoroethylene) nanoporous membrane with plasma

    Bratescu M.A., Saito N., Takai O.

    Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers   Vol. 45 ( 10 B ) page: 8352 - 8357   2006.10

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    In this work we treated type I collagen immobilized on different nanoporous membranes with microwave (MW) argon plasma. Hydrophobic and hydrophilic nanoporous substrates of poly(tetrafluoroethylene), with thickness varying from 35 to 70 μm and a 100nm pore size, were employed as support for collagen immobilization. On the hydrophilic nanoporous membrane, after the MW plasma treatment, the immobilized collagen changed its morphology and showed a tendency to self-assemble in quasi-regular forms as microellipsoids. The presence of collagen immobilized on the nanoporous membrane after the MW plasma treatment was analyzed by detecting in the Raman spectrum an α-helix form, NH deformation vibration, amide II band at .1550 cm-1, a characteristic group frequency of the collagen macromolecule. © 2006 The Japan Society of Applied Physics.

    DOI: 10.1143/JJAP.45.8352

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  296. Water droplets interaction with super-hydrophobic surfaces

    Wu Y., Saito N., Nae F.A., Inoue Y., Takai O.

    Surface Science   Vol. 600 ( 18 ) page: 3710 - 3714   2006.9

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    Static and dynamic behavior of water droplets on various super-hydrophobic (SH) surfaces were investigated. First, SH plant leaves were used as samples and we found out that surface nanostructure has a great influence on the droplets dynamic behavior. Then, we made biomimetic structures by depositing SH films through microwave-plasma enhanced chemical vapor deposition (MPECVD). Next, SH surfaces were fabricated by covering previously roughened SiOx films with self-assembled monolayers (SAMs). The substrates were then charged with static electricity, and water droplets falling on tilted charged surfaces leaped up or run uphill at high speeds, proving that not only the surface nanostructure but also its chemical endgroups have a great effect on the water droplets motion on SH surfaces. © 2006.

    DOI: 10.1016/j.susc.2006.01.073

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  297. Depth profiles of the Fermi level at an amorphous-carbon nitride/SiO<inf>2</inf>/n-type-Si heterojunction interface obtained by Kelvin probe force microscopy

    Ishizaki T., Saito N., Ohta R., Takai O.

    Diamond and Related Materials   Vol. 15 ( 9 ) page: 1378 - 1382   2006.9

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    To explore the work function of a typical amorphous-CN film containing a nitrogen concentration of 23.5 at.%, surface potential images were acquired using Kelvin probe force microscopy. Based on the Fermi level of the n-type Si and the contact potential difference between the amorphous-CN film and the n-Si substrate, the work function of the amorphous-CN film was estimated to be 5.2 ± 0.2 eV below its vacuum level. Using the surface potential depth profile for an etched amorphous-CN film, energy diagrams of the amorphous-CN/SiO2/n-Si interface were constructed based on the positional relationship of the Fermi level. These band diagrams showed that band bending occurred at the amorphous-CN/SiO2/n-Si interface despite the Fermi level pinning effect of surface trapping due to the SiO2 insulator layer. © 2005 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.diamond.2005.10.001

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  298. Synthesis of DLC films by PECVD combined with hollow cathode sputtering

    Anita V., Butsuda T., Saito N., Takai O.

    Vacuum   Vol. 80 ( 7 SPEC. ISS. ) page: 736 - 739   2006.5

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    The mechanical and electrical properties of aluminium-doped diamond-like carbon (DLC) thin films obtained with a hybrid method combining hollow magnetron discharge sputtering and plasma-enhanced chemical vapour deposition (PECVD) are reported. The ratio between the mass flows of methane reactive gas and argon inert gas was found to have a big influence on the properties of doped DLC films. For low mass flow of methane gas the cathode surface was kept in a metallic state. By increasing methane mass flow the cathode surface became to be covered with DLC and the behaviour of the discharge changed, influencing the properties of deposited films. The lowest resistivity (10-4 Ω cm) of thin films was obtained in the metallic state of the cathode but without DLC character, as indicated by Raman measurements. The resistivity increased in the intermediate mode (0.01 Ω cm) and attained higher value (1 Ω cm) in the poisoned state of the cathode. These films presented DLC character, with D and G bands, as revealed by Raman measurements. © 2005 Elsevier Ltd. All rights reserved.

    DOI: 10.1016/j.vacuum.2005.11.020

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  299. Synthesis of nitrogen-rich carbon nitride thin films via magnetic field-assisted inductively coupled plasma sputtering

    Ohta R., Yokota T., Anita V., Saito N., Takai O.

    Vacuum   Vol. 80 ( 7 SPEC. ISS. ) page: 752 - 755   2006.5

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    Carbon nitride (CNx) thin films were synthesized by magnetic field-assisted inductively coupled plasma (ICP) sputtering. The electron density, electron temperature and optical emission intensity of the plasma state were significantly changed by varying the external magnetic field applied. The CNx thin film with the highest nitrogen content (N/C=1.16) was obtained when the electron density was at its highest and the electron temperature at its lowest. Additionally, the optical emission from atomic nitrogen was the strongest under the same condition. © 2005 Elsevier Ltd. All rights reserved.

    DOI: 10.1016/j.vacuum.2005.11.042

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  300. Magnetron plasma-enhanced chemical vapor deposition of diamond-like carbon thin films

    Anita V., Saito N., Takai O.

    Thin Solid Films   Vol. 506-507   page: 63 - 67   2006.5

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    An RF magnetron plasma-enhanced chemical vapor deposition system with variable magnetic field (MagPECVD) was utilized for high rate deposition of diamond-like carbon thin films. Deposition rate was nonuniform, with minimum value of 30 nm/min in the center of the cathode where the low ionic flux is determined by the absence of the E × B electronic drift. The highest value of 1029 nm/min was registered in the position of the cathode with the highest ion flux determined by the presence of the E × B electronic drift. Hardness, elastic modulus and RMS roughness of thin films were dependent on local values of magnetic field intensities and the values of input power. © 2005 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.tsf.2005.08.074

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  301. Microarc plasma treatment of titanium and aluminum surfaces in electrolytes

    Anita V., Saito N., Takai O.

    Thin Solid Films   Vol. 506-507   page: 364 - 368   2006.5

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    The advanced plasma process of microarc treatment in electrolytes was utilized to prepare oxide layers on aluminum and titanium substrates by anodic conversion. This paper reports results on morphology, structure, growth rates, hardness and water contact angle measurements of titanium and aluminum oxidized surfaces obtained by microarc discharge in ecologically clean and safe electrolytes. Porous oxide layers were formed on the sample surface after the microarc treatment. The morphology of surfaces was dependent on the current intensity during the treatment. The pore diameter in the films decreased with the increase in current intensity and the thickness of the oxide film increased almost linearly with the time of treatment for a constant input power. © 2005 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.tsf.2005.08.083

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  302. Visualization of human plasma fibrinogen adsorbed on highly oriented pyrolytic graphite by scanning probe microscopy

    Ohta R., Saito N., Ishizaki T., Takai O.

    Surface Science   Vol. 600 ( 8 ) page: 1674 - 1678   2006.4

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    Human plasma fibrinogen (HPF) was observed by atomic force microscopy (AFM) and Kelvin probe force microscopy (KPFM) conducted in non-contact mode. The HPF was adsorbed on a highly oriented pyrolytic graphite (HOPG) substrate as single molecules, as aggregated bundles, and as aggregated fibers. Topographic and phase images confirmed structural changes in the HPF after exposure to air, while topographic and KPFM images confirmed fibers with the width of a single HPF molecule. Additionally, KPFM confirmed the surface potential difference between the HPF and the HOPG, and periodical potential drop reflecting the E and D domains in the fiber. © 2006 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.susc.2005.12.058

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  303. Carbohydrate Microarrays by Click Chemistry

    H. Sato, Y. Miura, T. Yamauchi, N. Saito, K. Kobayashi, O. Takai

    Trans. Mater. Research. Soc. J.   Vol. 31   page: 659-703   2006

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  304. Micropatterned saccharide display on the silicon surface

    Sato H., Miura Y., Saito N., Kobayashi K., Takai O.

    Polymer Preprints, Japan   Vol. 54 ( 1 )   2005.12

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    The immobilization and the micro-patterning of biomolecules on the solid surfaces are paid much attention for the application of biomaterials, and biosensors. Micro-patterned carbohydrates on solid surfaces are useful to analyze carbohydrate-protein interactions and to fabricate the scaffolds of cell cultivation. We have proposed a new method for micro-patterned carbohydrate display. The micropattern composed of hydrophobic and electrostatically positive regions were fabricated by methyl and amino terminated self-assembled monolayers (SAM). The patterned substrates were incubated in two types of aqueous solutions of PVLA and Heparin, in this order. The PVLA and Heparin site-selectively adsorbed on methyl and amino terminated SAMs, respectively. It indicated that the two dimensional matrix of PVLA and Heparin can be fabricated on the micro-patterned substrate. The micropatterning of two different components on one substrate enables two different biomacromolecules to be self-assembled into micro pattern.

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  305. Photolithographic patterning of dendrimer monolayers and pattern-selective adsorption of linear macromolecules

    Yamazaki T., Imae T., Sugimura H., Saito N., Hayashi K., Takai O.

    Journal of Nanoscience and Nanotechnology   Vol. 5 ( 11 ) page: 1792 - 1800   2005.12

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    Alkyl groups of n-octadecyltrimethoxysilane (ODS) in a self-assembled monolayer on a silicon substrate were oxidized to carboxyl groups by partial irradiation of vacuum ultra-violet light under the photomask, producing a COOH/ODS line pattern. After active esterification of carboxyl groups, two kinds of amine-terminated dendrimers, poly(propyleneimine) and poly(amido amine) (PAMAM) dendrimers, were immobilized on a COOH line through amide-bond so that photolithographic dendrimer/ODS pattern was finally fabricated. Preparation was certified by atomic force microscopy (AFM) and surface-enhanced infrared absorption spectroscopy at transmission mode. Adsorption of linear macromolecutes was examined on PAMAM dendrimer/ODS pattern. After adsorption of poly-L-glutamic acid (PGA) at a pH below α-helix-random coil transition, rod-shape texture was observed only on the dendrimer line in an AFM image. This texture is an aggregate of α-helical PGA. Sodium hyaluronate and DNA were also adsorbed selectively on the dendrimer line, keeping the line profile, although characteristic textures were not observed. Copyright © 2005 American Scientific Publishers All rights reserved.

    DOI: 10.1166/jnn.2005.434

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  306. Properties of DLC thin films produced by RF PE-CVD from pyrrole monomer

    Takai O., Anita V., Saito N.

    Surface and Coatings Technology   Vol. 200 ( 1-4 SPEC. ISS. ) page: 1106 - 1109   2005.10

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    This paper reports the properties of diamond like carbon (DLC) thin films obtained in a capacitively coupled, RF powered, plasma enhanced chemical vapor deposition (PE-CVD) system. A precursor used was pyrrole, one of the most known monomers for conductive polypyrrole polymer processing. The deposition rate of thin films was high: 74 nm/min at 50 W and 425 nm/min at 400 W input power. The hardness and elastic modulus of thin films reached the highest values of 16.5 and 148 GPa at 400 W and the surface morphology of the films did not suffer important changes in the interval of utilized input powers: RMS roughness decreased from 0.45 nm at 50 W to 0.20 nm at 400 W. All deposited films were transparent in the infrared range. Raman measurements revealed that the increase of the input power led to a decrease of the sp3 and an increase of sp2 bonded carbon atoms in thin films. The resistivity of DLC thin films was very high for low values of RF input power (ρ> 107 kΩ cm) and decreased at higher values of input power (ρ≈ 55 kΩ cm at 400 W). By using nitrogen as a doping element the resistivity decreased to ρ ≈ 3.5 kΩ cm at 400 W and 20 sccm N2. © 2005 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.surfcoat.2005.02.024

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  307. Surface-potential reversibility of an amino-terminated self-assembled monolayer based on nanoprobe chemistry

    Saito N., Lee S., Takahiro I., Hieda J., Sugimura H., Takai O.

    Journal of Physical Chemistry B   Vol. 109 ( 23 ) page: 11602 - 11605   2005.6

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    Nanoprobe chemistry offers a promising approach for the construction of nanostructures consisting of organic molecules by employing the tip of a scanning probe microscope. In a previous report, we demonstrated that a nitroso-terminated surface on an organosilane self-assembled monolayer could be converted into an amino-terminated surface by applying such a nanoprobe electrochemical technique. This paper reports on surface-potential reversibility originating from a reversible chemical reaction between amino and nitroso groups. In addition, we demonstrate surface-potential memory based on this chemical reversibility. Ammo-terminated SAMs were prepared from p-aminophenyl-trimethoxysilane through chemical vapor deposition. Surface potentials were acquired by Kelvin force microscopy. When scanning probe lithography was conducted with a gold tip at positive-bias voltages, the surface potential of the scanned area shifted dramatically in the negative direction. Scanning with negative-bias voltages led to positive shift in the surface potential of the scanned area. The surface potential could be recovered even after multiple scannings with positive and negative applied bias voltages. On the basis of this discovery, we also succeeded in demonstrating surface-potential memory via our nanoprobe electrochemical technique. © 2005 American Chemical Society.

    DOI: 10.1021/jp044943k

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  308. An investigation into the effect of ionic species on the formation of ZnTe from a citric acid electrolyte

    Ishizaki T., Saito N., Takai O., Asakura S., Goto K., Fuwa A.

    Electrochimica Acta   Vol. 50 ( 16-17 ) page: 3509 - 3516   2005.5

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    Cathodic electrodeposition of ZnTe film was carried out on Au/Cu substrate using three kinds of citric acid electrolytes, each with a different counter anion, i.e., sulfate, chloride, or nitrate ions, to investigate the anion species' influence on the morphology, composition and structure of the resulting electrodeposited ZnTe films. Both chloride and nitrate electrolytes gave crystalline ZnTe films with almost stoichiometric ZnTe composition under electrolytic conditions similar to those optimized previously for sulfate electrolyte. The mean crystallite size of the electrodeposited ZnTe films ranged from 13 to 37 nm. The effect of the ionic species on the crystallite size was also investigated. The degree of ZnTe(1 1 1) plane orientation of the films obtained from nitrate electrolyte was stronger than that of the films from sulfate or chloride electrolytes. High resolution SEM observations revealed different morphologies depending on the anion in the electrolytic solution. © 2005 Elsevier Ltd. All rights reserved.

    DOI: 10.1016/j.electacta.2004.12.028

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  309. Fabrication of ferroelectric self-assembled fluorinated polyether monolayer on hydrogen-terminated Si(111) surface

    Okano T., Inari H., Ishizaki T., Saito N., Sakamoto W., Takai O.

    Chemistry Letters   Vol. 34 ( 4 ) page: 600 - 601   2005.4

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    Covalently bonded ferroelectric self-assembled monolayers on silicon surface were fabricated via hydrosilylation of terminally allylated and propargylated fluorine-containing polyether adsorbates on hydrogen-terminated Si(111) substrates. Incomplete polarization - electric field loops indicating ferroelectric property were observed in a range of bias voltage ±300 mV. Copyright © 2005 The Chemical Society of Japan.

    DOI: 10.1246/cl.2005.600

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  310. High-resolution submicron patterning of self-assembled monolayers using a molecular fluorine laser at 157 nm

    Nae F.A., Saito N., Hozumi A., Takai O.

    Langmuir   Vol. 21 ( 4 ) page: 1398 - 1402   2005.2

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    Using a molecular fluorine laser at 157 nm wavelength, submicron patterning of organosilane self-assembled monolayers (SAMs) is demonstrated utilizing mask-contact photolithography. An organosilane, namely, octadecyltrimethoxysilane [ODS, CH3(CH2) 17Si(OCH3)3], SAM is chemisorbed onto Si substrates covered with a 2 nm thick oxide layer and subsequently patterned using the laser. The optical path of the laser beam and the photomask-sample space are evacuated and then backfilled and purged with nitrogen during laser firing. The resulting pattern is investigated using various measurement techniques. The scanning probe microscopy images show that patterns are transferred to the SAM-covered Si substrates and that 500 nm features are successfully photoprinted in this way.

    DOI: 10.1021/la0480944

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  311. Fabrication of a built-in patterned metal microstructure on a polymer substrate using a microstructured organic monolayer template

    Saito N., Hieda J., Takai O.

    Electrochemical and Solid-State Letters   Vol. 7 ( 12 )   2004.12

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    We have successfully developed a novel route based on nanoimprinting lithography. In developing our approach, we demonstrated that metal on an organic monolayer could be easily transferred to a polymer surface by nanoimprinting lithography, and that patterned metal fabricated in this manner would bind strongly to the polymer substrates. © 2004 The Electrochemical Society. All rights reserved.

    DOI: 10.1149/1.1819870

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  312. Effect of N doping on properties of diamond-like carbon thin films produced by RF capacitively coupled chemical vapor deposition from different precursors

    Anita V., Butuda T., Maeda T., Takizawa K., Saito N., Takai O.

    Diamond and Related Materials   Vol. 13 ( 11-12 ) page: 1993 - 1996   2004.11

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    In this paper, we report results concerning properties of diamond-like carbon (DLC) thin films obtained in different experimental conditions: various RF power values, and different precursors (methane, acetone and toluene or in combination with nitrogen). The deposition rate of DLC thin films obtained from precursors with low ionizing energy and high number of carbon atoms in molecule as acetone and toluene was higher (142 nm/min for acetone and 607 nm/min for toluene as compared with 79 nm/min for methane at 400 W input power). The highest value of hardness was obtained from methane (18 GPa). In the case of acetone and toluene precursors, the hardness increased with input power to the highest values of 16.8 and 14.8 GPa. By utilizing nitrogen as doping element, the resistivity of DLC thin films obtained from methane and acetone decreased from values higher than 107 Ω cm to lower values of 12.5 × 103 Ω cm for 3.79% nitrogen atomic concentration in the case of films obtained from methane and 40 × 103 Ω cm for 4.26% nitrogen atomic concentration in the case of films obtained from acetone. © 2004 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.diamond.2004.05.002

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  313. Reversible nanochemical conversion

    Sugimura H., Lee S., Saito N., Takai O.

    Journal of Vacuum Science and Technology B: Microelectronics and Nanometer Structures   Vol. 22 ( 6 )   2004.11

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    Local chemical conversion of an organic surface that consists of a surface-confined monolayer is demonstrated in a reversible manner based on electrochemical reactions induced beneath a conductive probe tip of an atomic force microscope. The monolayer was prepared by a self-assembling technique from the precursor, p-aminophenyltrimethoxysilane. The chemical state of this self-assembled monolayer was regulated by probe-tip scanning with a bias voltage applied between the tip and substrate. With a positive substrate bias scanning, the monolayer surface was oxidized to be nitroso-terminated. With a negative bias scanning, this monolayer could be amino-terminated. These oxidation and reduction processes could be reversibly repeated. © 2004 American Vacuum Society.

    DOI: 10.1116/1.1825020

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  314. Contribution of primary chemical bonding states of amorphous carbon nitride to hardness

    Saito N., Ohta R., Lee K.H., Kobayashi Y., Okazaki S., Inoue Y., Sugimura H., Takai O.

    Electrochemical and Solid-State Letters   Vol. 7 ( 8 )   2004.9

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    The hardness of amorphous carbon nitride (CN) was investigated by solid-state nuclear magnetic resonance (NMR) spectroscopy and Fourier transform infrared spectroscopy (FTIR). The results of NMR measurements showed that sp2 and/or sp hybrid orbitals controlled the hardness of amorphous-CN films, which had been determined by nanoindentation tests. The intensity of the C-H and CN stretching modes observed in the FTIR spectra was the weakest in the hardest sample. The decreases of -CH3 and -CH2 groups indicated that the amorphous network had increased. The sp2 hybrid orbital forms a cross-linker which plays an important role in improving of the hardness of the film. © 2004 The Electrochemical Society. All rights reserved.

    DOI: 10.1149/1.1763791

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  315. Organosilane self-assembled monolayers directly linked to the diamond surfaces

    Ohta R., Saito N., Inoue Y., Sugimura H., Takai O.

    Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films   Vol. 22 ( 5 ) page: 2005 - 2009   2004.9

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    The organosilane self-assembled monolayers (SAM) which were linked to diamond surfaces were investigated. It was observed that the SAM were prepared from p-aminophenyltrimethoxysilane (H2N(CH)6Si(OCH 3)3, APhS) on diamond substrates and were irradiated by vacuum ultraviolet (VUV) light. It was also observed that the thickness of the SiOx layer was increased by the APhS-SAM formations and VUV irradiations. It was found that the APhS-SAM/ nano-scale SiOx/ diamond could be used for diamond-bio hybridized devices.

    DOI: 10.1116/1.1776184

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  316. Fabrication of piezoelectric self-assembled fluorinated polyether monolayer on hydrogen-terminated Si(111) surface.

    Okano, T; Inari, H; Saito, N; Takai, O

    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY   Vol. 228   page: U471 - U471   2004.8

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  317. Photochemical reaction of organosilane self-assembled monolayer as studied by scanning probe microscopy

    Sugimura H., Saito N., Ishida Y., Ikeda I., Hayashi K., Takai O.

    Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films   Vol. 22 ( 4 ) page: 1428 - 1432   2004.7

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    The study of a patterning process of an alkylsilane self-assembled monolayer (SAM) using vacuum ultraviolet (VUV) light at 172 nm, by charaterizing the VUV-irradiated SAM surfaces through lateral force microscopy (LFM) and Kelvin force microscopy (KFM), was presented. The relative frictional forces and surface potentials of the VUV-irradiated regions at various irradiation dose rates were measured by LFM and KFM. VUV-irrated SAMs showed particularly lower surface potentials than the other SAM surface potentials than the other SAM surfaces with different dose rates, at a certain dose rate of 10-15 J/cm 2. It was observed that LFM and KFM measurements were promising in order to probe chemistries on organic thin films proceeding.

    DOI: 10.1116/1.1764818

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  318. Exploration of the chemical bonding forms of alkoxy-type organic monolayers directly attached to silicon

    Saito N., Lee S., Maeda N., Ohta R., Sugimura H., Takai O.

    Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films   Vol. 22 ( 4 ) page: 1425 - 1427   2004.7

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    The preparation of alkoxy-type organic monolayers on hydrogen-terminated silicon from 1-undecanol (UN), 1-nonanol (NO), 1-heptanol (HP) and 4-phenylphenenol (PP) was discussed. The characterization of these monolayers was based on X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FT-IR). A SiOx peak was clearly observed for the HP, NO and PP monolayers. It was shown that the generation of SiO x in the PP monolayer was due to steric hindrance of the aromatic rings. It was found that the the -CH2-region in the FT-IR spectra showed that the shorter alkyl chains promoted the formation of gauche conformers in the monolayers.

    DOI: 10.1116/1.1759353

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  319. Generation of amino-terminated surfaces by chemical lithography using atomic force microscopy

    Saito, N; Maeda, N; Sugimura, H; Takai, O

    LANGMUIR   Vol. 20 ( 13 ) page: 5182 - 5184   2004.6

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    Self-assembled monolayers (SAMs) covered with nitroso end groups were reduced using an atomic force microscope. As the bias voltage become more negative (beyond -4 V), the surface potential of the scanned area become closer to that of the amino-terminated SAM. Following this chemical change, however, no change in topographic features was detected, implying retained stability of the underlying SAM layer. We then released carboxylate-modified polystyrene (PS) spheres into a pH 4 solution containing the sample. Subsequent imaging with atomic force microscopy (AFM) revealed that these PS spheres were only selectively immobilized on the regions that were originally scanned at -6 V to form amino termination. In summary, using AFM set to a specific voltage, we were able to selectively generate micropatterned regions of the SAM with amino termination.

    DOI: 10.1021/la0353428

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    PubMed

  320. UV Raman spectroscopic probing into nitrogen-doped hydrogenated amorphous carbon

    Ohta R., Saito N., Okazaki S., Inoue Y., Sugimura H., Takai O.

    Thin Solid Films   Vol. 457 ( 1 ) page: 128 - 132   2004.6

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    From the viewpoint of hardness, chemical bonding states of nitrogen-doped hydrogenated amorphous carbon film were characterized by Ultra violet (UV) Raman spectroscopy and Fourier transform infrared (FT-IR) spectroscopy. UV Raman spectra revealed that disorder of the structure in nitrogen-doped hydrogenated amorphous carbon was promoted by applying higher bias voltages in the preparation. FT-IR spectra showed that N-H bonds decreased and sp 3C-sp3N bonds increased with the increase of the bias voltages. The content of sp3C-sp3N bonds was maximized at the bias voltage of -800 V. We found out a guarantee that the content of sp 3C-sp3N bonds against bias voltages correlated with the hardness obtained by nanoindentation test. The structural disorder and the increase of sp3C-sp3N bonds are possible source of the hardness in the case of nitrogen-doped hydrogenated amorphous carbon. © 2003 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.tsf.2003.12.049

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  321. Electrodeposition of CuInTe<inf>2</inf> film from an acidic solution

    Ishizaki T., Saito N., Fuwa A.

    Surface and Coatings Technology   Vol. 182 ( 2-3 ) page: 156 - 160   2004.4

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    Copper-indium-telluride films were electrochemically deposited from solutions containing CuCl2, InCl3, TeO2 and HCl. Although a flat and smooth film with closely stoichiometric composition was deposited at -660 mV vs. Ag/AgCl at 303 K from a solution of 2.5×10-4 mol dm-3 CuCl2, 1.0×10-2 mol dm-3 InCl3, 5.0×10-4 mol dm-3 TeO2 and 0.1 mol dm-3 HCl, a polycrystalline CuInTe2 film was not obtained. Increasing the temperature from 303 to 363 K allowed the deposition at lower overpotential of a polycrystalline CuInTe2 film with closely stoichiometric composition and increased indium content. The band gap of the polycrystalline CuInTe2 film electrodeposited at 363 K at -660 mV was 0.98 eV. © 2003 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.surfcoat.2003.07.004

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  322. Surface potential microscopy for chemistry of organic self-assembled monolayers in small domains

    Sugimura H., Saito N., Maeda N., Ikeda I., Ishida Y., Hayashi K., Hong L., Takai O.

    Nanotechnology   Vol. 15 ( 2 )   2004.2

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    Micropatterning techniques using vacuum ultra-violet light at 172 nm in wavelength and an ultra-violet laser at 244 nm were applied to organosilane self-assembled monolayers (SAMs) formed on Si substrates covered with a 2 nm thick oxide layer. These SAMs were prepared from precursors, that is, octadecyltrimethoxysilane (ODS) or p-chloromethylphenyltrimethoxysilane (CMPhS). Polar functional groups such as COOH were generated through photochemical oxidation of the SAMs. Furthermore, the SAMs were Simultaneously etched and finally removed from the photoirradiated area. Surface potentials of the photoirradiated areas at various irradiation dose rates were measured by Kelvin-probe force microscopy (KFM) using the unirradiated area on each of the photopatterned samples as a reference. Changes in the surface chemical composition of the SAMs could be clearly and sensitively measured by KFM through the difference in surface potential between the irradiated and unirradiated SAMs.

    DOI: 10.1088/0957-4484/15/2/015

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  323. Oxygen gas assisted electron beam lithography in organosilane self-assembled monolayers

    Yamaguchi M., Saito N., Takai O.

    Digest of Papers - Microprocesses and Nanotechnology 2004     page: 198 - 199   2004

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    DOI: 10.1109/imnc.2004.245792

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  324. Microstructured π-conjugated organic monolayer covalently attached to silicon

    Saito N., Hayashi K., Sugimura H., Takai O.

    Langmuir   Vol. 19 ( 26 ) page: 10632 - 10634   2003.12

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    A phenylacetylene (PA) monolayer was prepared on hydrogen-terminated silicon. Through vacuum ultraviolet (VUV) lithography, micropatterned PA-monolayer/SiO2 samples were subsequently fabricated. The surface potential and electrical conductivity of the microstructured PA monolayers were examined by Kelvin probe force microscopy (KPFM) and conductive atomic force microscopy (C-AFM), respectively. KPFM measurements showed that the PA-monolayer surface regions were negatively charged. C-AFM measurements demonstrated that, in the microdomains, the PA-monolayer regions had a higher conductivity than the SiO2 regions fabricated by VUV lithography. This is the first report of electronic property images of a monolayer directly attached to silicon being demonstrated in microregions.

    DOI: 10.1021/la034187u

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  325. Origin of N 1s spectrum in amorphous carbon nitride obtained by X-ray photoelectron spectroscopy

    Ohta R., Lee K.H., Saito N., Inoue Y., Sugimura H., Takai O.

    Thin Solid Films   Vol. 434 ( 1-2 ) page: 296 - 302   2003.6

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    This paper focuses on determining a reasonable peak assignment for the N 1s spectrum of amorphous carbon nitride (a-CN) measured by X-ray photoelectron spectroscopy (XPS). Unfortunately, several peaks of a-CN have not been identified, that is, there has yet to be any shared understanding of their chemical bonding states. We investigated this by monitoring changes in spectra before and after vacuum ultraviolet (VUV) irradiation, thus obtaining information about the changes of chemical bonds. The observed changes were discussed based on the chemical shifts of components of a-CN determined from ab-initio molecular orbital (MO) calculations. We have proposed the following peak assignment for N 1s. The peaks located at approximately (1) 397.6, (2) 398.2, (3) 399.0, (4) 400.0, (5) 400.9 and (6) 401.9 eV were assigned to the chemical bonding states of (1) β-C 3 N 4 , (2) pyridine, (3) formonitril, (4) methylmethyleneamine, (5) pyrido[2,1,6-de]quinolizine, and (6) a nitroso group. This assignment did not agree with oft-quoted ones. However, only this peak assignment provides a reasonable interpretation for the changes we observed in a-CN introduced by VUV irradiation, and allows us to understand the chemical bonding states of a-CN film. © 2003 Elsevier Science B.V. All rights reserved.

    DOI: 10.1016/S0040-6090(03)00457-7

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  326. Selective immobilization of functional organic molecules onto a microtemplate fabricated using an amino-terminated self-assembled monolayer

    Hayashi K., Hozumi A., Saito N., Sugimura H., Takai O.

    Surface Science   Vol. 532-535   page: 1072 - 1078   2003.6

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    Micropatterned amino-terminated self-assembled monolayers (SAMs) were applied as templates to promote selective chemical reactions in minute spatial scale. The surface charge properties of the SAMs were investigated through zeta-potential measurements conducted in solutions of various pH values. These SAMs were then utilized in order to selectively immobilize carboxylate-modified fluorescence spheres (CM-FluoSpheres) on the sample surface. Each SAM was uniformly formed onto a clean Si(1 0 0) substrate covered with a thin oxide layer (SiO2) by chemical vapor deposition using n-(6-aminohexyl)aminopropyltrimethoxysilane [AHAPS:H2N(CH2)6NH(CH2)3S i(OCH3)3] as a precursor. Through a photolithographic technique employing vacuum ultraviolet light at 172 nm, microstructures consisting of AHAPS-SAM and SiO2 were fabricated. The micropatterned AHAPS-SAM/SiO2 samples were then immersed in a solution dispersed with CM-FluoSpheres. The solution was adjusted to pH = 2, 6 or 8. At pH = 8, the CM-FluoSpheres did not adsorb on the micropatterned AHAPS-SAM/SiO2. At pH = 2 and 6, the CM-FluoSpheres adsorbed specifically on the regions covered with AHAPS-SAM. In particular, the adsorption behavior at pH = 6 was highly selective. These results were predictable considering the isoelectric points of AHAPS-SAM and SiO2, that is, pH = 7.5 and 2.0, respectively. At pH = 6, the SiO2 surface was negatively charged while the AHAPS-SAM surface was positive. Since the CM-FluoSpheres, which are terminated with carboxyl groups, were negatively charged at this pH value, the SiO2 and AHAPS-SAM surfaces had repulsive and attractive interactions, respectively, with the CM-FluoSpheres. These opposite electrostatic interactions were the origin of the complete selectivity achieved in the adsorption. © 2003 Elsevier Science B.V. All rights reserved.

    DOI: 10.1016/S0039-6028(03)00211-5

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  327. Chemical resistivity of self-assembled monolayer covalently attached to silicon substrate to hydrofluoric acid and ammonium fluoride

    Saito N., Youda S., Hayashi K., Sugimura H., Takai O.

    Surface Science   Vol. 532-535   page: 970 - 975   2003.6

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    Self-assembled monolayers (SAMs) were prepared on hydrogen-terminated silicon substrates through chemical vapor deposition using 1-hexadecene (HD) as a precursor. The HD-SAMs prepared in an atmosphere under a reduced pressure (≈50 Pa) showed better chemical resistivities to hydrofluoric acid and ammonium fluoride (NH4F) solutions than that of an organosilane SAM formed on oxide-covered silicon substrates. The surface covered with the HD-SAM was micro-patterned by vacuum ultraviolet photolithography and consequently divided into two areas terminated with HD-SAM or silicon dioxide. This micro-patterned sample was immersed in a 40 vol.% NH4F aqueous solution. Surface images obtained by an optical microscopy clearly show that the micro-patterns of HD-SAM/silicon dioxide were successfully transferred into the silicon substrate. © 2003 Elsevier Science B.V. All rights reserved.

    DOI: 10.1016/S0039-6028(03)00158-4

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  328. Micropatterned 1-alkene self-assembled monolayer on hydrogen-terminated silicon by vacuum ultraviolet lithography

    Saito N., Kadoya Y., Hayashi K., Sugimura H., Takai O.

    Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers   Vol. 42 ( 4 B ) page: 2534 - 2537   2003.4

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    We fabricated micropatterned 1-alkene self-assembled monolayers (SAMs) on p-type Si(111). 1-Alkene SAMs were prepared from 1-hexadecene (HD) and 1-octadecene (OD) through reduced pressure chemical vapor deposition. Those SAMs were micropatterned by vacuum ultraviolet (VUV) light lithography. The 1-alkene SAMs irradiated for 30 min were measured by X-ray photoelectron spectroscopy (XPS). The sample surface irradiated for 30 min was covered with shorter alkyl chains with carboxyl end groups on SiOx since the O and OH radicals produced by VUV irradiation react with alkyl chains. We measured surface potential images of those micro-patterned SAMs with Kelvin probe force microscopy (KPFM). The surface potentials of HD- and OD-SAMs were +60 and +90mV against irradiated regions. The regions of 1-alkene SAMs show higher surface potential than those of irradiated regions due to the presence of carboxyl end groups. The regions of HD- and OD-SAMs showed positive surface potentials against those of irradiated regions. This irradiated region was confirmed to be a carboxyl-terminated surface with short alkyl chains based on XPS analysis. The carboxyl groups are negatively charged, so the surface potential of the irradiated regions is negative against the HD- and OD-SAM regions.

    DOI: 10.1143/jjap.42.2534

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  329. Principle in imaging contrast in scanning electron microscopy for binary microstructures composed of organosilane self-assembled monolayers

    Saito N., Wu Y., Hayashi K., Sugimura H., Takai O.

    Journal of Physical Chemistry B   Vol. 107 ( 3 ) page: 664 - 667   2003.1

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    Field-emission electron microscopy (FE-SEM) was applied to observe coplanar microstructures composed of two different types of organosilane self-assembled monolayers (SAMs). These binary microstructures were prepared on silicon substrates covered with native oxide by a lithographic technique. Four types of organosilane precursors, they are n-octadecyltrimethoxysilane (ODS), heptadecafluoro-1,1,2,2-tetrahydro-decyl-1-trimethoxysilane (a type of fluoroalkylsilane, FAS), n-(6-aminohexyl)aminopropyltrimethoxysilane (AHAPS), and 4-(chloromethyl)phenyltrimethoxysilane (CMPhS), were used in this study. Micropatterns composed of the SAMs were clearly imaged by FE-SEM at low acceleration voltages, around 0.6 kV. The brightness order of the SAMs in FE-SEM was ODS > AHAPS > CMPhS > FAS. Through ab initio molecular orbital calculations, the origin of this FE-SEM contrast was ascribed to the electron affinity between the SAMs, which governed the FE-SEM image contrast. It has been successfully demonstrated that FE-SEM could provide us chemical information on organic films with a monomolecular thickness on a solid support.

    DOI: 10.1021/jp021362r

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  330. Imaging micropatterned organosilane self-assembled monolayers on silicon by means of scanning electron microscopy and Kelvin probe force microscopy

    Wu Y., Hayashi K., Saito N., Sugimura H., Takai O.

    Surface and Interface Analysis   Vol. 35 ( 1 ) page: 94 - 98   2003.1

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    Field-emission scanning electron microscopy (FE-SEM) and surface potentiometry based on scanning probe microscopy, i.e. Kelvin probe force microscopy (KFM), have been applied to study microstructures consisting of organosilane self-assembled monolayers (SAMs) terminated with -CH3 or -CF3 groups. Onto cleaned Si substrates covered with a thin oxide layer of 2 nm thick, SAMs were formed by chemical vapour deposition using n-octadecyltrimethoxysilane (CH3(CH2)17Si(OCH3)3, ODS) or fluoroalkylsilane (CF3(CF2)7(CH2)2Si (OCH3)3, FAS) as a precursor. Through a photolithographic technique employing vacuum ultraviolet light at 172 nm, microstructures composed of ODS, FAS or both were fabricated. Micropatterns of the SAMs on SiO2/Si substrates were clearly imaged by FE-SEM at an acceleration voltage of the electron beam below 1 kV, but image contrasts became faint with an increase in the acceleration voltage. At a voltage of 5 kV there was almost no detectable contrast. An FE-SEM image of the ODS-FAS microstructure acquired at an acceleration voltage of 0.8 kV clearly demonstrated that the region covered with ODS was brighter and thus, emitted secondary electrons more efficiently than the region covered with FAS. Furthermore, as indicated in a KFM image, the region covered with FAS had a surface potential ∼180 mV lower than that of the region covered with ODS. The origin of these image contrasts between ODS- and FAS-SAMs was the large difference in electronic states between ODS and FAS owing to the electron negativity of fluorine atoms.

    DOI: 10.1002/sia.1501

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  331. Scanning probe surface modification: Chemical conversion of terminal functional groups on organosilane self-assembled monolayers

    Sugimura, H; Saito, N; Hayashi, K; Maeda, N; Takai, O

    SCANNING TUNNELING MICROSCOPY/SPECTROSCOPY AND RELATED TECHNIQUES   Vol. 696   page: 150 - 157   2003

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  332. Alkyl self-assembled monolayer prepared on hydrogen-terminated Si(111) through reduced pressure chemical vapor deposition: Chemical resistivities in HF and NH<inf>4</inf>F solutions

    Saito N., Youda S., Hayashi K., Sugimura H., Takai O.

    Chemistry Letters   ( 12 ) page: 1194 - 1195   2002.12

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    Hexadecyl self-assembled monolayers have been prepared on hydrogen-terminated Si(111) substrates through reduced pressure chemical vapor deposition. Chemical resistvities to HF and NH4F of SAMs were studied.

    DOI: 10.1246/cl.2002.1194

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  333. Regulation of the surface potential of silicon substrates in micrometer scale with organosilane self-assembled monolayers

    Hayashi K., Saito N., Sugimura H., Takai O., Nakagiri N.

    Langmuir   Vol. 18 ( 20 ) page: 7469 - 7472   2002.10

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    Microstructures composed of two types of organosilane self-assembled monolayers (SAMs) terminated with different functional groups have been constructed on silicon substrates covered with native oxide. Surface potential images of these microstructures were acquired by Kelvin-probe force microscopy (KFM). By chemical vapor deposition (CVD), the SAMs were fabricated from n-octadecyltrimethoxysilane (ODS) [H3C(CH2)17Si(OCH3)3], fluoroalkylsilane (FAS), that is, heptadecafluoro-1,1,2,2-tetrahydro-decyl-1-trimethoxysilane [F3C(CF2)7(CH2)2Si(OCH 3)3], and n-(6-aminohexyl)aminopropyltrimethoxysilane (AHAPS) [H2N(CH2)6NH(CH2)3Si(OCH 3)3]. Through a photolithographic technique, binary microstructures consisting of ODS/FAS and ODS/AHAPS were constructed. A surface potential contrast of the two SAMs in each of the binary microstructures was clearly detected by KFM. The surface potential of the FAS-terminated region was ca. 180 mV lower than that of the ODS-terminated region, while the potential of the AHAPS-terminated region was ca. 50 Mv higher. These results agree with surface potentials of the SAMs predicted from dipole moments of the corresponding precursor organosilane molecules as estimated by ab initio molecular orbital (MO) calculations. Moreover, by applying the surface potential contrasts experimentally acquired by KFM to surface potential contrast occupied area with single molecule curves theoretically derived by MO calculations, packing densities of the SAMs prepared by CVD were confirmed ta be smaller than those of Langmuir-Blodgett monolayers.

    DOI: 10.1021/la011707h

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  334. The decomposition mechanism of p-chloromethylphenyltrimethoxysiloxane self-assembled monolayers on vacuum ultraviolet irradiation

    Saito N., Hayashi K., Sugimura H., Takai O.

    Journal of Materials Chemistry   Vol. 12 ( 9 ) page: 2684 - 2687   2002.9

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    The decomposition mechanism of p-chloromethylphenyltrimethoxysiloxane (CMPS) self-assembled monolayers (SAMs) due to vacuum ultraviolet (VUV) irradiation at a wavelength of 172 nm has been studied based on water repellency, X-ray photoelectron spectroscopy (XPS) and Kelvin probe force microscopy (KPFM). The CMPS-SAMs were prepared through chemical vapor deposition at 100°C. The water contact angle increased dramatically within the first 30 min, reaching a plateau at this point. The saturated water contact angle was 76°. Next, the CMPS-SAMs were irradiated at under 10 Pa from 0 to 30 min. The CMPS-SAMs irradiated for 15 and 30 min were covered with carboxylated hydrocarbon fragments and silanol groups, respectively. KPFM measurements for micro-patterned SAMs, i.e. CMPS/CO2H and CMPS/SiOH, showed that the surface potential of the carboxylated and silanol regions were -16 and +19 mV vs. CMPS-SAM, respectively. The former negative surface potential difference originated in the electronegativity of the CO2H fragments. These results provide us with a route to prepare an organic template for various fields such as bio-sensors, chemical sensors and electrolytes.

    DOI: 10.1039/b203643f

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  335. Surface potential contrasts between silicon surfaces covered and uncovered with an organosilane self-assembled monolayer

    Hayashi K., Saito N., Sugimura H., Takai O., Nakagiri N.

    Ultramicroscopy   Vol. 91 ( 1-4 ) page: 151 - 156   2002.8

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    Surface potentials of Si substrates covered with a organosilane self-assembled monolayers (SAMs) were measured with reference to the substrate uncovered with the SAM using Kelvin probe force microscopy. Based on a photolithographic technique, the reference surface was prepared in a micrometer scale on each of the samples. SAMs were prepared from n-octadecyltrimethoxysilane [ODS: CH3(CH2)17Si(OCH3)3], 3,3,3-trifluoropropyltrimethoxysilane [FAS3: CF3(CH2)2Si(OCH3)3], heptadecafluoro-1,1,2,2-tetrahydro-decyl-1-trimethoxysilane [FAS17: CF3(CF2)7(CH2)2Si (OCH3)3] or n-(6-aminohexyl) aminopropyltrimethoxysilane [AHAPS: H2N(CH2)6NH(CH2)3Si (OCH3)3) by chemical vapor deposition. Potentials of the surfaces covered with ODS-, FAS3- and FAS17-SAMs became more negative than the uncovered Si substrate, while the surface covered with AHAPS-SAM showed a more positive surface potential than the reference. The potential contrasts of these SAMs to the reference were -25, -170, -225 and +50mV for ODS-, FAS3-, FAS17- and AHAPS-SAMs, respectively. These results almost agreed with potentials expected from the dipole moments of the corresponding precursor molecules estimated by ab initio molecular orbital calculation, except for FAS3-SAM. Despite FAS3 molecule having a larger dipole moment than FAS17 molecule, the surface potential contrast of FAS3-SAM was smaller than that of FAS17-SAM, since surface coverage of FAS3-SAM was relatively incomplete compared with the other SAMs. © 2002 Elsevier Science B.V. All rights reserved.

    DOI: 10.1016/S0304-3991(02)00094-3

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  336. Surface potential images of self-assembled monolayers patterned by organosilanes: Ab initio molecular orbital calculations

    Saito N., Hayashi K., Sugimura H., Takai O., Nakagiri N.

    Surface and Interface Analysis   Vol. 34 ( 1 ) page: 601 - 605   2002.8

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    Self-assembled monolayers (SAMs) with different function terminal groups were prepared on substrates of n-type silicon by chemical vapour deposition (CVD) from n-octadecyltrimethoxysilane (ODS: H3C(CH2)17Si(OCH3)3), heptadecafluoro-1,1,2,2-tetrahydro-decyl-1-trimethoxysilane (FAS: F3C(CF2)7 (CH2)2Si(OCH3)3), n-(6-aminohexyl)aminopropyltrimethoxysilane (AHAPS: H2N(CH2)6NH(CH2)3 Si(OCH3)3) and 4-(chloromethyl)phenyltrimethoxysilane [CMPS: H2ClC(C6H4)Si(OCH3)3]. The sample surfaces covered with ODS-SAM were irradiated under a reduced pressure of 10 Pa with vacuum ultraviolet (VUV) light through a photomask. Then, the irradiated areas with the ODS-SAM removed were covered with another SAM by CVD. Surface potential images of the patterned areas were measured by Kelvin probe force microscopy (KPFM) and explained by ab initio molecular orbital (MO) calculations. The KPFM measurements showed that the surface potential contrasts of the FAS-, AHAPS- and CMPS-SAMs against the ODS-SAM were about -170, +50 and -30 mV, respectively. The surface potentials as a function of area occupied by a molecule were predicted using the respective dipole moments perpendicular to substrates, which were obtained by the ab initio MO calculations. The predicted surface potentials of the FAS-, CMPS- and AHAPS-SAMs approximately agreed with the measured values at areas of about 1.5, 1.6 and 0.6 nm2 per molecule. The ab initio MO calculations also showed differences in surface potentials appearing due to the differences in Fermi levels of the respective SAMs.

    DOI: 10.1002/sia.1369

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  337. Surface potential microscopy for organized molecular systems

    Sugimura H., Hayashi K., Saito N., Nakagiri N., Takai O.

    Applied Surface Science   Vol. 188 ( 3-4 ) page: 403 - 410   2002.3

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    Surface potentials of organosilane self-assembled monolayers (SAMs) formed on silicon substrates were measured using Kelvin-probe force microscopy (KFM) employing a SAM formed from n-octadecyltrimethoxysilane [ODS: CH 3 (CH 2 ) 17 Si(OCH 3 ) 3 ] as a reference. The reference ODS surface was prepared in a micrometer scale on each of the samples based on a photolithographic technique using vacuum ultra-violet light at 172 nm. Another SAM was prepared on the same sample surface from heptadecafluoro-1,1,2,2-tetrahydro-decyl-1-trimethoxysilane (fluoroalkylsilane with 17 fluorine atoms, FAS17), 3,3,3-trifluoropropyltrimethoxysilane (fluoroalkylsilane with three fluorine atoms, FAS3), n-(6-aminohexyl)aminopropyltrimethoxysilane (AHAPS) or (chloromethyl)phenyltrimethoxysilane (CMPS). Potentials of the surfaces covered with FAS17-SAM, FAS3-SAM and CMPS-SAM became more negative than ODS-SAM, while the surface covered with AHAPS-SAM showed a more positive surface potential than the reference. The acquired potential contrasts of the regions covered with FAS17, FAS3, AHAPS and CMPS with reference to ODS were -180, -150, +50 and -30 mV, respectively. These results almost agreed with potentials expected from the dipole moments of the corresponding precursor molecules estimated by ab initio molecular orbital calculation. © 2002 Elsevier Science B.V. All rights reserved.

    DOI: 10.1016/S0169-4332(01)00958-8

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  338. Carbon Nitrides

    Takai O., Lee K., Ohta R., Saito N.

    Seimitsu Kogaku Kaishi/Journal of the Japan Society for Precision Engineering   Vol. 68 ( 12 ) page: 1526 - 1529   2002

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    DOI: 10.2493/jjspe.68.1526

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  339. Surface potentials of patterned organosilane self-assembled monolayers acquired by Kelvin probe force microscopy and ab initio molecular calculation

    Saito N., Hayashi K., Sugimura H., Takai O., Nakagiri N.

    Chemical Physics Letters   Vol. 349 ( 3-4 ) page: 172 - 177   2001.11

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    This study aimed experimentally and theoretically to reveal the surface potentials of organosilane self-assembled monolayers (SAMs) using Kelvin probe force microscopy (KPFM) and ab initio molecular orbital (MO) calculations, and to distinguish among the surface domains of the SAMs. We prepared the patterned SAMs of n-octadecyltrimethoxysilane [ODS: H3C(CH2)17Si(OCH3)3], heptadecafluoro-1,1,2,2-tetrahydro-decyl-1-trimethoxysilane [FAS: F3C(CF2)7(CH2) 2Si(OCH3)3] and n-(6-aminohexyl)aminopropyltrimethoxysilane [AHAPS: H2N(CH2)6NH(CH2) 3Si(OCH3)3] by chemical vapor deposition (CVD). The surface potentials for FAS-SAM and AHAPS-SAM vs. ODS-SAM in the atmosphere were -170 and +50 mV, respectively. The experimental surface potentials agreed with the calculated ones at the surface area occupied by a molecule of 1.1-1.5nm2molecule-1. © 2001 Elsevier Science B.V.

    DOI: 10.1016/S0009-2614(01)01097-1

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  340. Kelvin probe force microscopy images of microstructured organosilane self-assembled monolayers

    Sugimura H., Hayashi K., Saito N., Takai O., Nakagiri N.

    Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers   Vol. 40 ( 6 B ) page: 4373 - 4377   2001.6

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    A difference in surface potentials between organosilane self-assembled monolayers (SAMs) was measured by means of Kelvin probe force microscopy (KFM). The SAMs were deposited on a single Si substrate from alkylsilane, that is, octadecyltrimethoxysilane (ODS)[H3C(CH2)17Si(OCH3) 3], and fluoroalkylsilane (FAS), that is, heptadecafluoro-1,1,2,2-tetrahydrodecyl-1-trimethoxysilane [F3C(CF2)7(CH2)2 Si(OCH3)3]. The locations of these SAMs on the substrate were defined by means of a photolithographic technique. The regions terminated with ODS and FAS were clearly distinguished by KFM with the surface potential difference between the ODS- and FAS-terminated surfaces under optimized imaging conditions. The surface potential of the FAS-terminated region was 170 ∼ 180 mV lower than the potential of the ODS-terminated surface. The origin of such a low surface potential of FAS-SAM was ascribed to the larger dipole moment of the FAS molecule induced by the electron negativity of F atoms as estimated from a molecular orbital calculation.

    DOI: 10.1143/jjap.40.4373

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  341. Surface potential images of microstructured organosilane self-assembled monolayers acquired by Kelvin probe force microscopy

    Sugimura, H; Hayashi, K; Saito, N; Takai, O; Nakagiri, N

    JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS   Vol. 40 ( 2B ) page: L174 - L176   2001.2

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    DOI: 10.1143/JJAP.40.L174

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  342. Catalytic effects of copper on dibenzo-p-dioxin and polychlorinated dibenzo-p-dioxin generations using ab initio molecular orbital method

    Hirota M., Kato J., Saito N., Fuwa A.

    Toxicological and Environmental Chemistry   Vol. 81 ( 3-4 ) page: 133 - 146   2001

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    The roles played by copper in dibenzo-p-dioxin formation from the precursor phenol have been investigated using ab initio molecular orbital calculation, and the following catalytic roles of copper has been identified: (i) stabilization of the total energy owing to the absorption of phenol, (ii) reduction of oxygen-hydrogen bond strength in phenol, and (iii) reduction of steric effect of hydrogen atom in pre-dioxin. The catalytic effect of copper has been shown in terms of the smaller apparent activation energy. In the case of polychlorinated dibenzo-p-dioxins generation from precursor polychlorinated phenols, the catalytic roles (i), i.e., the stabilization of the total energy of precursor, would become even stronger. On the other hand, the catalytic roles (ii) and (iii) are unchangeable regardless of the existence of substituted chlorine atom.

    DOI: 10.1080/02772240109359026

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  343. Behavior of Cu-In-Te electrodeposition from acid solution

    Ishizaki T., Saito N., Yata D., Fuwa A.

    Proceedings of the Second International Conference on Processing Materials for Properties     page: 281 - 284   2000.12

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    Ternary compound-semiconductor, CuInTe2, film was deposited cathodically under potentiostatic conditions on titanium substrate from aqueous solution containing CuCl2, InCl3, TeO2 and HCl in this study. The deposition parameters such as electrolytic solution composition, potential and temperature were optimized for electrodeposition of CuInTe2. Structural characterization of the deposited film was also carried out using XRD and SEM. Electrodeposited films were prepared and analyzed for their chemical composition using ICP. The ICP analyses showed that the stoichiometry of the films could be controlled by (1) the deposition potential and/or by (2) the electrolytic bath composition.

    Scopus

  344. Preparation of YSZ thin films by RF plasma-enhanced metal organic chemical vapor depodition

    Nishimura T., Ichikawa T., Saito N., Fuwa A.

    Proceedings of the Second International Conference on Processing Materials for Properties     page: 267 - 270   2000.12

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    Yttria-stabilized zirconia (YSZ) has high potential to be used as solid-oxide fuel cell (SOFC) electrolyte. However, the high efficiency of SOFC has not been yet achieved due to the high internal resistance of bulk electrolyte. The resistance becomes lower with the decrease in the electrolyte thickness. Thus, the decrease in electrolyte thickness leads to lower internal resistance. The aim of this study is as follows: (a) to prepare the thin films of YSZ by inductively-coupled RF plasma-enhanced metal organic chemical vapor deposition (PEMOCVD) process using Zr(t-OC4H9)4, Y(DPM)3 and oxygen, and (b) to reveal the relationship between the structural characterizations and the process parameters.

    Scopus

  345. The roles of metallic compounds on dioxins generation-decomposition behavior from thermodynamics and quantum chemistry

    Saito N., Hirota M., Ishizaki T., Fuwa A.

    Proceedings of the Second International Conference on Processing Materials for Properties     page: 727 - 732   2000.12

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    Owing to their extremely high toxicity in the environment, the dioxins have been attracting social, technical and scientific attention in recent years. The authors theoretically had predicted the thermodynamics properties of all the dioxins via quantum chemistry and statistical thermodynamics and elucidated the generation-decomposition behavior of dioxins in the equilibrium calculation of C-H-O-Cl system. In actual combustion processes, it is said that metallic compounds have much influence on the dioxins behavior. The aim of this study is to reveal the roles of metallic compounds the generation-decomposition behavior of dioxins is revealed from the viewpoints of quantum chemistry. Especially, the catalytic effect of copper has been investigated for the reaction, 2HCl(g)→H2(g)+Cl2(g) and for the etherification reaction from precursors, which is Phenol(g) here, to dioxins. The catalytic role of Cu is shown to have much influence on the generation -decomposition of dioxins.

    Scopus

  346. Kinetics of SiHCl<inf>3</inf> and SiCl<inf>4</inf> evolution in Si(s)-HCl(g) system simulated by ab-initio MO

    Saito N., Ishizaki T., Fuwa A.

    Materials Transactions, JIM   Vol. 41 ( 3 ) page: 383 - 392   2000.3

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    A reaction model for a HCl(g)-Si(s) system is proposed in this study as follows: first, SiCl2(g) and H2(g) are produced by a heterogeneous surface reaction, and then SiHCl3(g) and SiH2Cl2(g) are produced by the homogeneous reaction between SiCl2(g) and HCl(g) and between SiCl2(g) and H2(g), respectively; finally, SiCl4(g) and SiHCl3(g) are produced by the homogeneous reaction between SiHCl3(g) and HCl(g) and between SiH2Cl2(g) and HCl(g), respectively. The mechanism in the first heterogeneous surface reaction step has been studied extensively in the past. However, the detail of the subsequent homogeneous reactions has not yet been understood. It is important to get information of the chemical kinetics of the reactions derived from the reaction intermediate of SiCl2(g) in the SiCl2(g)-HCl(g)-H2(g) system, so the most plausible elementary reactions of reversible unimolecular fission and chain reaction are proposed here. The structures of the molecules formed in these reactions are optimized using the minimization principle of energy calculated by ab-initio molecular orbital method and also their rate constants are calculated by conventional transition state theory. Using these rate constants, the ordinary differential equations are solved on mass balance, and the time dependent concentration profile of respective chemical species and the prior reaction paths are discussed in this study.

    DOI: 10.2320/matertrans1989.41.383

    Scopus

  347. Prediction for thermodynamic function of dioxins for gas phase using semi-empirical molecular orbital method with PM3 Hamiltonian

    Saito N., Fuwa A.

    Chemosphere   Vol. 40 ( 2 ) page: 131 - 145   2000.1

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    In this investigation, respective thermodynamic parameters of heats of formation, standard entropy and specific heat capacity at constant pressure for PCDDs, PCDFs, Co-PCB and PCBs as well as polychlorinated-benzenes and poly-chlorinated-phenols have been evaluated by quantum chemical calculation using a semi-empirical molecular orbital method with the PM3 Hamiltonian and statistical thermodynamic correlation.

    DOI: 10.1016/S0045-6535(99)00215-5

    Scopus

  348. Gas phase equilibria for dibenzo-p-dioxin, dibenzo-p-furan and biphenyl in the C-H-O system

    Saito N., Ishizaki T., Fuwa A.

    Toxicological and Environmental Chemistry   Vol. 74 ( 3-4 ) page: 165 - 177   2000

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Toxicological and Environmental Chemistry  

    The gas phase equilibrium calculation for the C-H-O system at atmospheric pressure and temperature from 773 to 1773 K at intervals of 250 K was performed to understand the generation and decomposition behavior of dibenzo-p-dioxin (DD), dibenzo-p-furan (DF) and biphenyl (BP) in relation to the existing oxygen potential. It is possible to categorize these results into three regions from the viewpoint of this potential: region (A), region (B) and region (C) are that of the higher, modest and lower oxygen potential, respectively. In region (A), the equilibrium amounts of DD, DF and BP are nearly zero. In region (B), they increase once and then decrease with rise in temperature. In the most characteristic region (C), they increase uniformly with rise in temperature.

    DOI: 10.1080/02772240009358879

    Scopus

  349. Thermodynamic investigation of the effect of oxygen and hydrogen chloride potential upon generation and decomposition behavior of dioxins

    Nagahiro Saito, Takahiro Ishizaki, Akio Fuwa

    Toxicological and Environmental Chemistry   Vol. 75 ( 3-4 ) page: 161 - 179   2000

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    Language:English   Publishing type:Research paper (scientific journal)  

    The thermodynamic equilibrium of the C-H-O-Cl system has been calculated to elucidate the generation and decomposition behavior of dioxins, and is discussed from the viewpoint of the oxygen and hydrogen chloride potential. The dioxins behavior is greatly dependent on the oxygen potential, i.e. higher temperature and oxygen potential lead to the complete decomposition of dioxins, while low hydrogen chloride potential under insufficient oxygen condition leads to an increase of multi-chlorine displacement of dioxins.

    DOI: 10.1080/02772240009358902

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  350. Thermodynamic function derivation of dioxin substances using semi-empirical molecular orbital theory

    Saito N., Fuwa A.

    Proceedings of the TMS Fall Extraction and Processing Conference   Vol. 3   page: 2009 - 2018   1999.12

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Proceedings of the TMS Fall Extraction and Processing Conference  

    In this investigation, respective thermodynamic parameters of heats of formation, standard entropy and specific heat capacity at constant pressure for PCDDs, PCDFs, Co-PCB and PCBs as well as polychlorinated-benzens and polychlorinated-phenols have been evaluated by quantum chemical calculation using a semi-empirical molecular orbital method with the PM3 Hamiltonian and statistical thermodynamic correlation. The values of heats of formation for the dioxin substances and their precursors are calculated in the range of ±200 kJ/mol. The tolerance analysis indicates that the maximum discrepancy with experimental values would be reasonably estimated to be ±28 kJ/mol. The values of standard entropy for these compounds would be in the range of + 270 to + 500 J/mol K, and the estimated discrepancy between the calculated experimental heats of formation would be in the range of + 1 to + 9 J/mol K.

    Scopus

  351. Prediction of Elementary Reaction Mechanism for the CVD Process in Si<inf>2</inf>Cl<inf>6</inf>-H<inf>2</inf> System using Semi-Empirical Molecular Orbital Method

    Saito N., Fuwa A.

    Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals   Vol. 63 ( 3 ) page: 319 - 325   1999

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals  

    From our previous experimental study of the Si chemical vapor deposition in Si2Cl6-H2 system, the following elementary reaction mechanism was proposed: decomposition of Si2Cl6 to produce SiCl2, which becomes the adsorbent; Si2Cl6(g) → 2SiCl3(g) → SiCl4(g) + SiCl2(g) (→ SiCl2(a)), and hydrogen reduction reaction of the absorbed SiCl2 to produce Si(s). The preliminary quantum chemistry study for this reaction mechanism has shown that the reaction is so infeasible that the above-mentioned elementary reaction mechanism is unreasonable. The most feasible and appropriate reaction mechanism has been shown as follows: (Step 1) Si2Cl6(g) → SiCl4,(g) + SiCl2(g) (Step 2) SiCl2(g) +a → SiCl2(a) (Step 3) SiCl2(a) + H2(g) → SiCl(a) + 2HCl(g) (Step 3-1) SiCl2(a) + H2(g) → Si-2HCl(a) (Step 3-2) Si-2HCl(a) → Si(a) + 2HCl(g) where, a is the active site on silicon surface. On the assumption that step 3 is the rate-determining step, this elementary reaction mechanism can explain the experimental observation in the rate expression on the concentration dependence with respect to Si2Cl6 and H2.

    DOI: 10.2320/jinstmet1952.63.3_319

    Scopus

  352. Prediction of pressure dependent rate constant for the reaction, SiH<inf>4</inf>(g)→SiH<inf>3</inf>(g)+H(g), using RRKM theory aided by ab-initio MO

    Saito N., Hirota M., Ishizaki T., Fuwa A.

    Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals   Vol. 63 ( 4 ) page: 520 - 526   1999

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals  

    The pressure dependent rate constant for the reaction, SiH4(g)→SiH3(g)+H was predicted using the Rice-Ramspger-Kassel-Marcus theory aided by Ab-initio molecular orbital (MO). It was calculated under conditions in which the temperatures were from 600 to 1500 K intervals of 100 K. The Arrhenius type rate expression was shown.

    DOI: 10.2320/jinstmet1952.63.4_520

    Scopus

  353. Effect of citric acid and EDTA addition on Cu-In alloy electrochemical deposition

    Ishizaki T., Saito N., Fuwa A.

    Materials Transactions, JIM   Vol. 40 ( 9 ) page: 867 - 870   1999

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    The standard electrode potential for Cu is 0.34 V and that of In is -0.34 V, which means that their deposition potentials are far apart, making the co-deposition difficult from a simple solution containing Cu and In ions. In order to bring these deposition potentials closer, a complex forming reagent of citric or EDTA is added to the CuSO4-In2(SO4)3 solution. The effect of these reagents was examined by linear sweep voltammetric measurement. An electrochemical deposition experiment of Cu-In alloy was conducted where effect citric acid or EDTA addition, current density and Cu concentration were examined.

    DOI: 10.2320/matertrans1989.40.867

    Scopus

  354. Theoretical analysis for thermal chemical vapor deposition from Tetraethoxysilane using a semi-empirical molecular orbital method

    Hirota M., Saito N., Ishizaki T., Fuwa A.

    Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals   Vol. 63 ( 7 ) page: 931 - 937   1999

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals  

    In order to elucidate the reaction mechanism for the Tetraethoxysilane (TEOS) thermal decomposition at atmospheric pressure, its pertinent elemental reactions involving the SiO(OC2H5)2 reaction intermediate were first proposed. For respective species formed in these elemental reactions, the total energy and the electronic state were calculated using a semi-empirical molecular method. The adsorption process which involves adsorbent species formation and surface reaction mechanism were then analyzed from the standpoint of molecular orbital formation and charge transfer mechanism, and the results are summarized as follows: (1) A reaction intermediate, SiO(OC2H5)2(1A1), is probably formed through the following β-elimination reaction route: Si(OC2H5)4(1A1)→SiO(OC2H5) 2(1A1)+C2H4(1A1)+C2H5OH (1A1). (2) The adsorption of SiO(OC2H5)2(1A1) on SiO2 occurs with charge transfer from the dangling bond of silicon atom at an active site of the SiO2 surface to the π*-LUMO unoccupied orbital of SiO(OC2H5)2(1A1). (3) The sequence of surface reactions is considered as follows: (1) First, a dissociation reaction of C2H5(2A′) takes place, whereby producing a double bond between silicon atom and oxygen atom of the intermediate, since they possess unpaired electrons. (2) Si-O bond is successively formed following the mechanism similar to the one operating in the adsorption of SiO(OC2H5)2(1A1) on SiO2. (3) Electronic state of the reactant finally formed is in the 1A1 state, which has a σ-orbital to be fully occupied with electrons.

    DOI: 10.2320/jinstmet1952.63.7_931

    Scopus

  355. Texture of thin silicon films deposited from Si<inf>2</inf>Cl<inf>6</inf>

    Kato Y., Saito N., Fuwa A.

    Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals   Vol. 60 ( 8 ) page: 744 - 750   1996.8

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    Thin Silicon films were deposited on non-crystal quartz glass substrates by hydrogen reduction of Si2Cl6 at temperatures from 650 to 900 °C in a horizontal hot wall reactor. The microstructures of the thin silicon films deposited under various experimental conditions were analyzed. The thin silicon films deposited from 750 to 850 °C have the highest degree of preferred (220) plane orientation with the 〈111〉 direction along the plane, and the cross-sectional morphology exhibits a columnar structure. The experimental values of the lattice spacing approach a value cited in JCPDS for the films deposited in a higher temperature range. In the lower temperature range the morphology of surface is flat and smooth, and in the higher temperature range the surface becomes uneven remarkably.

    DOI: 10.2320/jinstmet1952.60.8_744

    Scopus

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Books 107

  1. Superhydrophobic Anticorrosion Coating

    Ishizaki T., Furukawa T., Kamiyama N., Saito N., Takai O.

    Handbook of Self-Cleaning Surfaces and Materials: From Fundamentals to Applications: Volumes 1 and 2  2023.1  ( ISBN:9783527351367

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    In this chapter, we introduce two types of superhydrophobic films formed on AZ31 magnesium alloy. One was fabricated by plasma chemical vapor deposition (CVD), and the other was prepared by two-step immersion processes. These film surfaces showed a static water contact angle of more than 150°. The hydrophobicity and root mean square roughness of the film surface increased with an increase in deposition or immersion time. The durability of these superhydrophobic surfaces in corrosive 5 wt% NaCl aqueous solution was elucidated. The anticorrosion resistance of these films was estimated by potentiodynamic polarization curve and electrochemical impedance spectroscopy (EIS) measurements. The EIS measurements and appropriate equivalent circuit models revealed that these superhydrophobic films considerably improved the anticorrosion-resistant performance of magnesium alloy AZ31. The anticorrosion mechanism of these superhydrophobic films was also proposed.

    DOI: 10.1002/9783527690688.ch28

    Scopus

  2. Synthesis of nitrogen-doped carbons from single-source precursors by solution plasma

    Panomsuwan G., Chokradjaroen C., Saito N.( Role: Sole author)

    Nanomaterials via Single-Source Precursors: Synthesis, Processing and Applications  2022.1  ( ISBN:9780128203446

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    Solution plasma processing is a bottom-up synthetic approach that can be employed for directly preparing nitrogen-doped carbons from single-source precursors with in situ nitrogen doping. Research efforts and interest in this topic have gained at a significant pace over the past years. This chapter provides an overview of solution plasma processing and recent progress on the synthesis of nitrogen-doped carbons from single-source precursors using this approach. The chapter starts by introducing the basic fundamentals of solution plasma and how to apply it in the synthesis of nitrogen-doped carbons. The effects of a solution plasma conditions and the type of precursors on the overall properties of nitrogen-doped carbons are summarized based on the important findings reported in the literature. A potential application of nitrogen-doped carbons as metal-free electrocatalysts for oxygen reduction reaction is explained and discussed in brief. At the end of the chapter, the remaining challenges and future prospects are highlighted for use in further studies. This chapter is intended to be generally informative and a useful guide for researchers who are new to this field.

    DOI: 10.1016/B978-0-12-820340-8.00019-8

    Scopus

  3. ソリューションプラズマを用いた電池電極材料の開発とその電気化学特性

    澤田康之、齋藤永宏( Role: Joint author)

    化学工業社  2022.1 

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    Responsible for pages:9   Language:Japanese Book type:Scholarly book

  4. Flow chemistry : integrated approaches for practical applications

    Luis S. V. (Santíago V.), García-Verdugo E. (Eduardo)( Role: Sole author)

    Royal Society of Chemistry  2020  ( ISBN:9781788014984

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    CiNii Books

  5. Solution plasma reactions and materials synthesis

    Panomsuwan G., Ueno T., Yui H., Nakamura J., Saito N.

    Molecular Technology: Energy Innovation  2018.12  ( ISBN:9783527345885

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    Electrical discharge in liquid, termed as solution plasma (SP), has become a booming research interest in the area of materials synthesis and processing owing to its flexible use of liquid mediums, which creates various reactive species and novel reaction fields. This successful approach has paved the way to designing and exploring novel materials for a broader field of applications. This chapter presents an overview of SP and its overall progress in materials synthesis and processing from the past to present, which is classified by the type of materials (metal nanoparticles, metal oxide, carbon materials, composites, etc.). Furthermore, current trend and future challenges of SP in both experimental and theoretical aspects are proposed as guidelines for further development and study. We expect that this chapter will serve as a valuable and handy reference for researchers who are studying SP and multidisciplinary fields of materials science and nanotechnology.

    DOI: 10.1002/9783527823987.vol3_c7

    Scopus

  6. Biomimetic superhydrophobic surface fabrication by plasma processing

    Watthanaphanit A., Saito N.( Role: Sole author)

    Biomimetic Architectures by Plasma Processing: Fabrication and Applications  2014.1  ( ISBN:9789814463942

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  7. 低コスト・ハイパフォーマンス技術による水処理革命(分担執筆) 3章 物理化学処理

    上野智永,齋藤永宏( Role: Sole author)

    コロナ社  2013.12 

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  8. 低コスト・ハイパフォーマンス技術による水処理革命(分担執筆) 3章 物理化学処理

    上野智永,齋藤永宏( Role: Joint author)

    コロナ社  2013.12 

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  9. 低コスト・ハイパフォーマンス技術による水処理革命(分担執筆) 3章 物理化学処理

    上野智永, 齋藤永宏( Role: Sole author)

    コロナ社  2013.12 

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  10. 低コスト・ハイパフォーマンス技術による水処理革命(分担執筆) 3章 物理化学処理

    上野智永, 齋藤永宏( Role: Joint author)

    コロナ社  2013.12 

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  11. 太陽エネルギー社会を築く材料テクノロジー(II) -材料プロセス編- 名古屋大学大学員工学研究科材料バックキャストテクノロジー研究センター 編 (分担執筆) 9章 薄膜技術

    上野智永,齋藤永宏( Role: Joint author)

    コロナ社  2013.11 

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  12. 太陽エネルギー社会を築く材料テクノロジー(II) -材料プロセス編- 名古屋大学大学員工学研究科材料バックキャストテクノロジー研究センター 編 (分担執筆) 9章 薄膜技術

    上野智永,齋藤永宏( Role: Joint author)

    コロナ社  2013.11 

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  13. 太陽エネルギー社会を築く材料テクノロジー(II) -材料プロセス編- 名古屋大学大学員工学研究科材料バックキャストテクノロジー研究センター 編 (分担執筆) 9章 薄膜技術

    上野智永, 齋藤永宏( Role: Joint author)

    コロナ社  2013.11 

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    Responsible for pages:166-183   Language:Japanese

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  14. 太陽エネルギー社会を築く材料テクノロジー(II) -材料プロセス編- 名古屋大学大学員工学研究科材料バックキャストテクノロジー研究センター 編 (分担執筆) 9章 薄膜技術

    上野智永, 齋藤永宏( Role: Joint author)

    コロナ社  2013.11 

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  15. Micro-Nano Mechatronics (Chapter 6 Synthesis of Nanomaterials by Solution Plasma Processing)

    O. Takai, M. A. Bratescu, T. Ueno, N. Saito( Role: Sole author)

    INTECH  2013 

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  16. 薄膜の評価技術ハンドブック「第6章第3節 電池電極特性」

    上野智永, 齋藤永宏( Role: Sole author)

    テクノシステム  2013 

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  17. エコトピア科学概論「5.2節 グリーンモビリティ社会を目指して」

    齋藤永宏( Role: Joint author)

    コロナ社  2013 

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  18. Micro-Nano Mechatronics (Chapter 6 Synthesis of Nanomaterials by Solution Plasma Processing)

    O. Takai, M. A. Bratescu, T. Ueno, N. Saito( Role: Joint author)

    INTECH  2013 

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  19. 薄膜の評価技術ハンドブック「第6章第3節 電池電極特性」

    上野智永, 齋藤永宏( Role: Joint author)

    テクノシステム  2013 

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  20. エコトピア科学概論「5.2節 グリーンモビリティ社会を目指して」

    齋藤永宏( Role: Joint author)

    コロナ社  2013 

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  21. 低コスト・ハイパフォーマンス技術による水処理革命

    堀 克敏, 松山 秀人, 齊藤 永宏, 市野 良一( Role: Sole author)

    コロナ社  2013  ( ISBN:9784339066302

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    CiNii Books

  22. 薄膜の評価技術ハンドブック「第6章第3節 電池電極特性」

    上野智永, 齋藤永宏( Role: Joint author)

    テクノシステム  2013 

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  23. 低コスト・ハイパフォーマンス技術による水処理革命

    堀 克敏, 松山 秀人, 齊藤 永宏, 市野 良一( Role: Joint author)

    コロナ社  2013  ( ISBN:9784339066302

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  24. 薄膜の評価技術ハンドブック「第6章第3節 電池電極特性」

    上野智永, 齋藤永宏( Role: Joint author)

    テクノシステム  2013 

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  25. エコトピア科学概論「5.2節 グリーンモビリティ社会を目指して」

    齋藤永宏( Role: Joint author)

    コロナ社  2013 

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  26. Micro-Nano Mechatronics (Chapter 6 Synthesis of Nanomaterials by Solution Plasma Processing)

    O. Takai, M. A. Bratescu, T. Ueno, N. Saito( Role: Sole author)

    INTECH  2013 

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    Responsible for pages:-   Language:Japanese

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  27. Micro-Nano Mechatronics (Chapter 6 Synthesis of Nanomaterials by Solution Plasma Processing)

    O. Takai, M. A. Bratescu, T. Ueno, N. Saito( Role: Sole author)

    INTECH  2013 

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  28. エコトピア科学概論「5.2節 グリーンモビリティ社会を目指して」

    齋藤永宏( Role: Joint author)

    コロナ社  2013 

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  29. Home dialysis in Japan : contemporary status

    Suzuki Hiromichi( Role: Sole author)

    Karger  2012  ( ISBN:9783318021097

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    CiNii Books

  30. 新しい材料合成反応場としてのソリューションプラズマ

    上野智永, 稗田純子, 是津信行, 齋藤永宏( Role: Sole author)

    シーエムシー出版  2011 

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  31. 基礎からわかる水の応用工学

    石崎貴裕, 齋藤永宏( Role: Joint author)

    日刊工業新聞社  2011 

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  32. Nanofabrication techniques and applications

    S. H. Lee, T. Ishizaki, K. Teshima, N. Saito, O. Takai( Role: Joint author)

    InTECH  2011 

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  33. 新しい材料合成反応場としてのソリューションプラズマ

    上野智永, 稗田純子, 是津信行, 齋藤永宏( Role: Joint author)

    シーエムシー出版  2011 

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  34. 基礎からわかる水の応用工学

    石崎貴裕, 齋藤永宏( Role: Joint author)

    日刊工業新聞社  2011 

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  35. Nanofabrication techniques and applications

    S. H. Lee, T. Ishizaki, K. Teshima, N. Saito, O. Takai( Role: Joint author)

    InTECH  2011 

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  36. 新しい材料合成反応場としてのソリューションプラズマ

    上野智永, 稗田純子, 是津信行, 齋藤永宏( Role: Sole author)

    シーエムシー出版  2011 

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    Responsible for pages:212-219   Language:Japanese

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  37. 基礎からわかる水の応用工学

    石崎貴裕, 齋藤永宏( Role: Joint author)

    日刊工業新聞社  2011 

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    Responsible for pages:145-156   Language:Japanese

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  38. 基礎からわかる水の応用工学

    石崎貴裕, 齋藤永宏( Role: Joint author)

    日刊工業新聞社  2011 

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  39. 新しい材料合成反応場としてのソリューションプラズマ

    上野智永, 稗田純子, 是津信行, 齋藤永宏( Role: Joint author)

    シーエムシー出版  2011 

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    Responsible for pages:212-219   Language:Japanese

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  40. Nanofabrication techniques and applications

    S. H. Lee, T. Ishizaki, K. Teshima, N. Saito, O. Takai( Role: Joint author)

    InTECH  2011 

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    Responsible for pages:475-504   Language:English

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  41. Nanofabrication techniques and applications

    S. H. Lee, T. Ishizaki, K. Teshima, N. Saito, O. Takai( Role: Joint author)

    InTECH  2011 

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    Responsible for pages:475-504   Language:English

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  42. Hydrophilicity and Bioactivity of a Polyethylene Terephthalate Surface Modified by Plasma-Initiated Graft Polymerization

    Saito N., Ishizaki T., Hieda J., Fujita S., Takai O.( Role: Sole author)

    Industrial Plasma Technology: Applications from Environmental to Energy Technologies  2010.10  ( ISBN:9783527325443

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    DOI: 10.1002/9783527629749.ch17

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  43. Biomimetic and Bioinspired Nanomaterials

    Takahiro Ishizaki, Katsuya Teshima, SunHyong Lee, Yoshitake Masuda, Nagahiro Saito, Osamu Takai( Role: Joint author)

    Wiley  2010 

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  44. Biomimetic and Bioinspired Nanomaterials

    Takahiro Ishizaki, Katsuya Teshima, SunHyong Lee, Yoshitake Masuda, Nagahiro Saito, Osamu Takai( Role: Joint author)

    Wiley  2010 

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  45. Biomimetic and Bioinspired Nanomaterials

    Takahiro Ishizaki, Katsuya Teshima, SunHyong Lee, Yoshitake Masuda, Nagahiro Saito, Osamu Takai( Role: Joint author)

    Wiley  2010 

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    Responsible for pages:9   Language:English

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  46. Acute blood purification

    鈴木 洋通, 平澤 博之( Role: Sole author)

    Karger  2010  ( ISBN:9783805594783

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    CiNii Books

  47. Biomimetic and Bioinspired Nanomaterials

    Takahiro Ishizaki, Katsuya Teshima, SunHyong Lee, Yoshitake Masuda, Nagahiro Saito, Osamu Takai( Role: Joint author)

    Wiley  2010 

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    Responsible for pages:9   Language:English

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  48. まてりあ/バイオミメティック材料プロセシングの開発

    ( Role: Joint author)

    日本金属学会会報  2009 

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  49. まてりあ/バイオミメティック材料プロセシングの開発

    齋藤 永宏( Role: Joint author)

    日本金属学会会報  2009 

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  50. まてりあ/バイオミメティック材料プロセシングの開発

    齋藤 永宏( Role: Joint author)

    日本金属学会会報  2009 

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    Responsible for pages:174   Language:Japanese

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  51. まてりあ/バイオミメティック材料プロセシングの開発

    齋藤 永宏( Role: Joint author)

    日本金属学会会報  2009 

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  52. 撥水・撥油の技術と材料/有機単分子膜処理による“超はっ水ナノ分子ペーパー”の作製

    ( Role: Joint author)

    株式会社シーエムシー出版  2008 

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  53. 撥水・撥油の技術と材料/有機単分子膜処理による“超はっ水ナノ分子ペーパー”の作製

    齋藤 永宏( Role: Sole author)

    株式会社シーエムシー出版  2008 

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  54. 撥水・撥油の技術と材料/有機単分子膜処理による“超はっ水ナノ分子ペーパー”の作製

    齋藤 永宏( Role: Sole author)

    株式会社シーエムシー出版  2008 

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    Responsible for pages:207-221   Language:Japanese

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  55. 撥水・撥油の技術と材料/有機単分子膜処理による“超はっ水ナノ分子ペーパー”の作製

    齋藤 永宏( Role: Sole author)

    株式会社シーエムシー出版  2008 

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  56. Transverse spin at PHENIX: Results and prospects

    Aidala C., Adare A., Afanasiev S., Ajitanand N.N., Akiba Y., Al-Bataineh H., Alexander J., Aoki K., Aphecetche L., Armendariz R., Aronson S.H., Asai J., Averbeck R., Awes T.C., Azmoun B., Babintsev V., Baksay G., Baksay L., Baldisseri A., Barish K.N., Barnes P.D., Bassalleck B., Bathe S., Batsouli S., Baublis V., Bazilevsky A., Belikov S., Bennett R., Berdnikov Y., Bickley A.A., Boissevain J.G., Borel H., Boyle K., Brooks M.L., Buesching H., Bumazhnov V., Bunce G., Butsyk S., Campbell S., Chang B.S., Charvet J.L., Chernichenko S., Chi C.Y., Chiba J., Chiu M., Choi I.J., Chujo T., Chung P., Churyn A., Cianciolo V., Cleven C.R., Cole B.A., Comets M.P., Constantin P., Csanád M., Csörgo T., D’Enterria D., Dahms T., Das K., David G., Deaton M.B., Dehmelt K., Delagrange H., Denisov A., Deshpande A., Desmond E.J., Dietzsch O., Dion A., Donadelli M., Drapier O., Drees A., Dubey A.K., Durum A., Dzhordzhadze V., Efremenko Y.V., Egdemir J., Ellinghaus F., Emam W.S., Enokizono A., En’yo H., Esumi S., Eyser K.O., Fields D.E., Finger M., Fleuret F., Fokin S.L., Fraenkel Z., Franz A., Franz J., Frawley A.D., Fujiwara K., Fukao Y., Fusayasu T., Gadrat S., Garishvili I., Glenn A., Gong H., Gonin M., Gosset J., Goto Y.( Role: Sole author)

    Transversity 2005: Como, Italy, 7-10 September 2005  2006.1  ( ISBN:9789812568465

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    The Relativistic Heavy Ion Collider (RHIC), as the world’s first and only polarized proton collider, offers a unique environment in which to study the spin structure of the proton. In order to study the proton’s transverse spin structure, the PHENIX experiment at RHIC took data with transversely polarized beams in 2001-02 and 2005, and it has plans for further running with transverse polarization in 2006 and beyond. Results from early running as well as prospective measurements for the future will be discussed.

    DOI: 10.1142/9789812773272_0009

    Scopus

  57. Science & Technology・超微細パターニング技術 -次世代のナノ・マイクロパターニングプロセス-

    ( Role: Joint author)

    2006 

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  58. ケミカルエンジニヤリング・バイオミメティックナノテクノロジー

    ( Role: Joint author)

    2006 

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  59. 高分子加工・糖鎖高分子の自己組織化と生体機能発現

    ( Role: Joint author)

    2006 

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  60. New Diamond・ダイヤモンド表面の有機修飾による機能化と集積化

    ( Role: Joint author)

    2006 

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  61. 金属・ナノプローブを利用した表面電位メモリ

    ( Role: Joint author)

    2006 

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  62. 高分子・積み木細工のナノテクノロジー

    ( Role: Joint author)

    2006 

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  63. バイオインダストリー・超薄膜生成技術による生体組織細胞培養テンプレート

    ( Role: Joint author)

    2006 

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  64. 応用物理・バイオミメティックプロセシングを用いた材料創製

    ( Role: Joint author)

    2006 

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  65. Mast cells : methods and protocols

    Krishnaswamy Guha, Chi David S.( Role: Sole author)

    Humana Press  2006  ( ISBN:1588293742

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    CiNii Books

  66. 高分子加工・糖鎖高分子の自己組織化と生体機能発現

    ( Role: Joint author)

    2006 

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  67. バイオインダストリー・超薄膜生成技術による生体組織細胞培養テンプレート

    ( Role: Joint author)

    2006 

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    Responsible for pages:20   Language:Japanese

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  68. 応用物理・バイオミメティックプロセシングを用いた材料創製

    ( Role: Joint author)

    2006 

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    Responsible for pages:196   Language:Japanese

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  69. 金属・ナノプローブを利用した表面電位メモリ

    ( Role: Joint author)

    2006 

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    Responsible for pages:277   Language:Japanese

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  70. 高分子・積み木細工のナノテクノロジー

    ( Role: Joint author)

    2006 

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    Responsible for pages:23   Language:Japanese

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  71. ケミカルエンジニヤリング・バイオミメティックナノテクノロジー

    ( Role: Joint author)

    2006 

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  72. Dietary fats and risk of chronic disease

    Huang Yung-Sheng Dr, 柳田 晃良, Knapp Howard R.( Role: Sole author)

    AOCS Press  2006  ( ISBN:9781893997547

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    CiNii Books

  73. New Diamond・ダイヤモンド表面の有機修飾による機能化と集積化

    ( Role: Joint author)

    2006 

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    Responsible for pages:5   Language:Japanese

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  74. Science & Technology・超微細パターニング技術 -次世代のナノ・マイクロパターニングプロセス-

    ( Role: Joint author)

    2006 

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    Responsible for pages:9   Language:Japanese

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  75. Surface-potential reversibility of an amino-terminated self-assembled monolayer based on nanoprobe chemistry

    Saito N.( Role: Joint author)

    Journal of Physical Chemistry B  2005.6 

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  76. Surface-potential reversibility of an amino-terminated self-assembled monolayer based on nanoprobe chemistry

    Saito N( Role: Joint author)

    Journal of Physical Chemistry B  2005.6 

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    Responsible for pages:11602-11605   Language:English

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  77. 環境対応型表面処理技術・第II編第2章第2節4.「気相めっき」

    ( Role: Joint author)

    2005 

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  78. 環境対応型表面処理技術・第II編第2章第2節4.「気相めっき」

    ( Role: Joint author)

    2005 

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  79. Fabrication of a built-in patterned metal microstructure on a polymer substrate using a microstructured organic monolayer template

    Saito N.( Role: Joint author)

    Electrochemical and Solid-State Letters  2004.12 

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  80. Fabrication of a built-in patterned metal microstructure on a polymer substrate using a microstructured organic monolayer template

    Saito N( Role: Joint author)

    Electrochemical and Solid-State Letters  2004.12 

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  81. Contribution of primary chemical bonding states of amorphous carbon nitride to hardness

    Saito N.( Role: Joint author)

    Electrochemical and Solid-State Letters  2004.9 

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  82. Contribution of primary chemical bonding states of amorphous carbon nitride to hardness

    Saito N( Role: Joint author)

    Electrochemical and Solid-State Letters  2004.9 

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  83. Exploration of the chemical bonding forms of alkoxy-type organic monolayers directly attached to silicon

    Saito N.( Role: Joint author)

    Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films  2004.7 

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  84. Exploration of the chemical bonding forms of alkoxy-type organic monolayers directly attached to silicon

    Saito N( Role: Joint author)

    Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films  2004.7 

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    Responsible for pages:1425-1427   Language:English

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  85. Chemical resistivity of self-assembled monolayer covalently attached to silicon substrate to hydrofluoric acid and ammonium fluoride

    Saito N.( Role: Joint author)

    Surface Science  2003.6 

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  86. Chemical resistivity of self-assembled monolayer covalently attached to silicon substrate to hydrofluoric acid and ammonium fluoride

    Saito N( Role: Joint author)

    Surface Science  2003.6 

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    Responsible for pages:970-975   Language:English

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  87. Surface potential images of self-assembled monolayers patterned by organosilanes: Ab initio molecular orbital calculations

    Saito N.( Role: Joint author)

    Surface and Interface Analysis  2002.8 

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  88. Surface potential images of self-assembled monolayers patterned by organosilanes: Ab initio molecular orbital calculations

    Saito N( Role: Joint author)

    Surface and Interface Analysis  2002.8 

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    Responsible for pages:601-605   Language:English

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  89. Diene-transmissive hetero Diels-Alder reaction of cross-conjugated azatrienes with ketenes: A novel and efficient, stereo-controlled synthetic method for hexahydroquinolinones

    Saito T.( Role: Joint author)

    Tetrahedron Letters  2002.4 

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  90. Diene-transmissive hetero Diels-Alder reaction of cross-conjugated azatrienes with ketenes: A novel and efficient, stereo-controlled synthetic method for hexahydroquinolinones

    Saito T( Role: Joint author)

    Tetrahedron Letters  2002.4 

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    Responsible for pages:2627-2631   Language:English

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  91. Surface potentials of patterned organosilane self-assembled monolayers acquired by Kelvin probe force microscopy and ab initio molecular calculation

    Saito N.( Role: Joint author)

    Chemical Physics Letters  2001.11 

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  92. Surface potentials of patterned organosilane self-assembled monolayers acquired by Kelvin probe force microscopy and ab initio molecular calculation

    Saito N( Role: Joint author)

    Chemical Physics Letters  2001.11 

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    Responsible for pages:172-177   Language:English

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  93. Prediction for thermodynamic function of dioxins for gas phase using semi-empirical molecular orbital method with PM3 Hamiltonian

    Saito N.( Role: Joint author)

    Chemosphere  2000.1 

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  94. Gas phase equilibria for dibenzo-p-dioxin, dibenzo-p-furan and biphenyl in the C-H-O system

    Saito N.( Role: Joint author)

    Toxicological and Environmental Chemistry  2000.1 

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  95. Thermodynamic investigation of the effect of oxygen and hydrogen chloride potential upon generation and decomposition behavior of dioxins

    Saito N.( Role: Joint author)

    Toxicological and Environmental Chemistry  2000.1 

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  96. Thermodynamic investigation of the effect of oxygen and hydrogen chloride potential upon generation and decomposition behavior of dioxins

    Saito N( Role: Joint author)

    Toxicological and Environmental Chemistry  2000.1 

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    Responsible for pages:161-179   Language:English

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  97. Gas phase equilibria for dibenzo-p-dioxin, dibenzo-p-furan and biphenyl in the C-H-O system

    Saito N( Role: Joint author)

    Toxicological and Environmental Chemistry  2000.1 

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    Responsible for pages:165-177   Language:English

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  98. Prediction for thermodynamic function of dioxins for gas phase using semi-empirical molecular orbital method with PM3 Hamiltonian

    Saito N( Role: Joint author)

    Chemosphere  2000.1 

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    Responsible for pages:131-145   Language:English

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  99. Effect of citric acid and EDTA addition on Cu-In alloy electrochemical deposition

    Ishizaki T.( Role: Joint author)

    Materials Transactions, JIM  1999.12 

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  100. Effect of citric acid and EDTA addition on Cu-In alloy electrochemical deposition

    Ishizaki T( Role: Joint author)

    Materials Transactions, JIM  1999.12 

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    Responsible for pages:867-870   Language:English

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  101. Theoretical analysis for thermal chemical vapor deposition from Tetraethoxysilane using a semi-empirical molecular orbital method

    Hirota M.( Role: Joint author)

    Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals  1999.1 

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  102. Theoretical analysis for thermal chemical vapor deposition from Tetraethoxysilane using a semi-empirical molecular orbital method

    Hirota M( Role: Joint author)

    Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals  1999.1 

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    Responsible for pages:931-937   Language:English

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  103. Occurrence of papaya ring spot potyvirus strain P in Sri Lanka

    Perera W. G. S., Suetsugu Tetsuro, Saito Norihiko( Role: Sole author)

    National Plant Quarantine Services Project : Japan International Cooperation Agency  1998 

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  104. Signal transduction in affective disorders

    小澤 寛樹, 斉藤 利和, 高畑 直彦, Nihon Seishin Shinkei Gakkai. Sokai (92nd : 1996: Sapporo-shi Japan), Symposium on Affective Disorders and Neuronal Signal Transduction (1996 : Sapporo-shi Japan), Sapporo Neuroscience Meeting (11th : 1996)( Role: Sole author)

    Springer  1997  ( ISBN:4431702105

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  105. Proceedings of the RIKEN symposium on spin structure of the nucleon, 18-19 December 1995, RIKEN, Japan

    Shibata T.-A, Ohta S, Saito N( Role: Sole author)

    World Scientific  1996  ( ISBN:9810227884

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  106. 渦度場の幾何学的構造と乱流統計

    京都大学数理解析研究所( Role: Sole author)

    京都大学数理解析研究所  1996 

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    CiNii Books

  107. Classic collection

    Bizet Georges, Scheidt Samuel, Bach Johann Sebastian, Chabrier Emmanuel, Mussorgsky Modest Petrovich, Debussy Claude, Gabrieli Giovanni, 東京金管五重奏団, ザ・ブラス, 東京シュタット・ファイファー・アンサンブル, 東京トランペット・クワルテット, 新日本フィル・トロンボーン四重奏団, ユーフォニアム・テューバ四重奏団「獅子座」, Holcombe, 斎藤 高順, 高山 直也, 森田 一浩, Jones P., Levin M., Minerd D.( Role: Sole author)

    Victor  1996 

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▼display all

MISC 1

  1. One-pot synthesis of purple benzene-derived MnO2-carbon hybrids and synergistic enhancement for the removal of cationic dyes

    Hyemin Kim, Nagahiro Saito

    Scientific Reports   Vol. 8 ( 1 )   2018.12

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    Language:English   Publishing type:Rapid communication, short report, research note, etc. (scientific journal)   Publisher:Nature Publishing Group  

    MnO2-carbon hybrid (MnO2-C-PBz) was simultaneously synthesized by a one-step solution plasma process (SPP) using a single precursor referred to as "purple benzene", which was derived from the K+(dicyclohexano-18-crown-6 ether) complex. To clarify the synergistic effects on the cationic dye removal, MnO2-free carbon and carbon-free MnO2 samples were concurrently investigated. The results of adsorption for cationic dyes (methylene blue (MB) and rhodamine B (Rh B)) and anionic dye (methyl orange (MO)) revealed remarkably high affinity for cationic dyes. In particular, MnO2-C-PBz exhibited the highest adsorption capacity for MB, i.e., ∼3 times greater than that of the others. In addition, MnO2-C-PBz exhibited a rapid, high decolorization ability at C0 = 10 mg L-1 (within a few seconds, ∼99%) and at C0 = 100 mg L-1 (within 30 min, ∼81%), and the theoretical maximum monolayer adsorption capacity was 357.14 mg g-1 as calculated from the Langmuir adsorption isotherm equation. Furthermore, compared with carbon-free MnO2, MnO2-C-PBz exhibited quite a good cyclic stability. We expect that our findings give rise to the understanding of the synergistic effects of MnO2-carbon hybrid, as well as role of each components for the cationic dye adsorption, and may open an innovative synthesis approach to inorganic-organic hybrid materials.

    DOI: 10.1038/s41598-018-22203-1

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Presentations 1594

  1. Development of Oxygen Reduction Catalysts for Fuel Cells International conference

    Nagahiro Saito

    MRM2023/IUMRS-ICA2023  2023.12.12  MRS-J and IUMRS

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    Event date: 2023.12

    Language:English   Presentation type:Oral presentation (invited, special)  

    Venue:Kyoto   Country:Japan  

  2. Solution Plasma Process for Surface Invited International conference

    Nagahiro Saito

    ICSE2023International Conference on Surface Engineering (ICSE2023) & Regional INTERFINISH 2023 for 60th Anniversary of Korean Society of Surface Science and Engineering  2023.11.3  The Korean Society of Surface Science and Engineering

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    Event date: 2023.11

    Language:English   Presentation type:Oral presentation (keynote)  

    Venue:Busan   Country:Korea, Republic of  

  3. ソリューションプラズマ技術とエネルギーデバイス用材料開発への活用

    齋藤永宏

    第39回九州・山口プラズマ研究会  2023.11.4  応用物理学会 九州支部

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    Event date: 2023.11

    Venue:大分県日田市   Country:Japan  

  4. 有機溶媒中で形成したプラズマの電気的特性と生成する炭素材料の構造

    Niu Jiangqi, Chokradjaroen Chayanaphat, 澤田 康之, 齋藤 永宏

    表面技術協会 第145回講演大会 

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    Event date: 2022.3

    Language:Japanese   Presentation type:Poster presentation  

    Venue:Tokyo, Japan  

  5. Ti-Al-Mg 系から SPS 法により合成した軽量材料とその機械的特性

    Seulgee Lee, Chokradjaroen Chayanaphat, 加藤 隆彦, 澤田 康之, 齋藤 永宏

    表面技術協会 第145回講演大会 

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    Event date: 2022.3

    Language:Japanese   Presentation type:Poster presentation  

    Venue:Tokyo, Japan  

  6. 燃料電池電極として用いられる Pt / Pd-NG の熱処理による ORR の改善

    Yilai Wang, Duangkamol Dechojarassri, Xiaoyang Wang, Sangwoo Chae, 澤田 康之, 齋藤 永宏

    表面技術協会 第145回講演大会 

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    Event date: 2022.3

    Language:Japanese   Presentation type:Poster presentation  

    Venue:Tokyo, Japan  

  7. Mechanical and surface properties of light weight Mg-Al-Ti alloys International conference

    Seulgee Lee, Satita Thiangtham, Chayanaphat Chokradjaroen, Nagahiro Saito

    INTERFINISH 2020  2021.9 

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    Event date: 2021.9

    Presentation type:Oral presentation (general)  

  8. Hight temperature cerium conversion coatings on AZ31 magnesium alloy International conference

    Salah Salman, Mohamed Gouda and Nagahiro Saito

    INTERFINISH 2020  2021.9 

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    Event date: 2021.9

    Presentation type:Oral presentation (general)  

  9. N-doped 3D High Porous Hierarchical Graphene for High Performance Oxygen Reduction Reaction International conference

    Yelin Zhao, Xiaoyang Wang, Duangkamol Dechojarassri, Han Zhou, Nagahiro Saito, Tongxiang Fan

    INTERFINISH 2020  2021.9 

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    Event date: 2021.9

    Presentation type:Oral presentation (general)  

  10. Sub-10 nm-scaled shell-layer of N-doped carbon for Li+ pathway International conference

    Junmo Moon, Sangwoo Chae, Duangkamol Dechojarassri, Yasuyuki Sawada, Nagahiro Saito

    INTERFINISH 2020  2021.9 

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    Event date: 2021.9

    Presentation type:Oral presentation (general)  

  11. Interfacial and Structural Analysis of Li-F-XYZ Based-Solid Electrolyte Thin Films International conference

    Ruijie Zheng, Yelin Zhao, Xiaoyang Wang, Satita Thiangtham, Rinyarat Naraprawatphong, Chayanaphat Chokradjaroen, Nagahiro Saito

    INTERFINISH 2020  2021.9 

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    Event date: 2021.9

    Presentation type:Oral presentation (general)  

  12. Room Temperature Synthesis of Pt catalyst on SWCNTs for Fuel Cell with Solution Plasma Process International conference

    Takumi Yana, Duangkamol Dechojarassri, Junmu Park, Sangwoo Chae, Yasuyuki Sawada, Nagahiro SAITO

    INTERFINISH 2020  2021.9 

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    Event date: 2021.9

    Presentation type:Oral presentation (general)  

  13. Validation of powder resistance prediction of carbon electrode materials for lithium-ion batteries: From qualitative cluster analysis to quantitative neural network analysis International conference

    Hojung Yun, Sangwoo Chae, Yukihiro Muta, Yasuyuki Sawada, Takahiro Ishizaki, *Nagahiro Saito

    INTERFINISH 2020  2021.9 

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    Event date: 2021.9

    Presentation type:Oral presentation (general)  

  14. Identification of Structural Descriptors of Carbon Materials for Lithium-ion Batteries by Unsupervised Cluster Analysis International conference

    SANGWOO CHAE, Nagahiro Saito

    INTERFINISH 2020  2021.9 

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    Event date: 2021.9

    Presentation type:Oral presentation (general)  

  15. CNT Decorated by Graphene Covered Pt with Solution Plasma Method for the Oxygen Reduction Reaction International conference

    Yilai Wang, Duangkamol Dechojarassri, Sangwoo Chae, Yasuyuki Sawada, Nagahiro Saito

    INTERFINISH 2020  2021.9 

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    Event date: 2021.9

    Presentation type:Oral presentation (general)  

  16. Pt free-Based Core-Shell Catalysts for Oxygen Fuel Cell Electrodes by Solution Plasma Process International conference

    Duangkamol Dechojarassri, Sangwoo Chae, Yasuyuki Sawada, Nagahiro Saito

    INTERFINISH 2020  2021.9 

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    Event date: 2021.9

    Presentation type:Oral presentation (general)  

  17. Green preparation of chitosan oligosaccharide-functionalized ZnO and Zn(OH)2 via solution plasma process International conference

    Chayanaphat Chokradjaroen, Satita Thiangtham, Sewan Theeramunkong, Nagahiro Saito, Ratana Rujiravanit

    INTERFINISH 2020  2021.9 

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    Event date: 2021.9

    Presentation type:Oral presentation (general)  

  18. Carbon-Metal catalyst composites for fuel cells International conference

    Andrés E. Romero V., Duangkamol Dechojarassri, Xiaoyang Wang, Sangwoo Chae, Yasuyuki Sawada, Nagahiro Saito

    INTERFINISH 2020  2021.9 

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    Event date: 2021.9

    Presentation type:Oral presentation (general)  

  19. Chitosan-deposited iron oxide nanoparticles by solution plasma and their magnetic property International conference

    Nie Jing, Chayanaphat Chokradjaroen, Satita Thiangtham, Nagahiro Saito

    INTERFINISH 2020  2021.9 

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    Event date: 2021.9

    Presentation type:Oral presentation (general)  

  20. Glow Plasma in Organic Solution by Criss-cross System International conference

    Jiangqi Niu, Rinyarat Naraprawatphong, Chayanaphat Chokradjaroen, Xiaoyang Wang, Sangwoo Chae, Nagahiro Saito

    INTERFINISH 2020  2021.9 

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    Event date: 2021.9

    Presentation type:Oral presentation (general)  

  21. Synthesis of Low-Platinum Core-Shell Structured Catalyst for Fuel Cell via Solution Plasma Process International conference

    Junmu Park, Yukihiro Muta, Duangkamol Dechojarassri, Yasuyuki Sawada, Nagahiro Saito

    INTERFINISH 2020  2021.9 

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    Event date: 2021.9

    Presentation type:Oral presentation (general)  

  22. Rapid Surface Modification of Water-Soluble Sulfonated Cellulose derived from Agricultural Waste-Sugarcane Bagasse via Solution Plasma Process International conference

    Satita Thiangtham, Chayanaphat Chokradjaroen, Nagahiro Saito, and Hathaikarn Manuspiya

    INTERFINISH 2020  2021.9 

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    Event date: 2021.9

    Presentation type:Oral presentation (general)  

  23. Surface Modification of Single-Walled Carbon Nanotubes and Their Electrochemical Property International conference

    Rinyarat Naraprawatphong, Xiaoyang Wang, Sangwoo Chae, Nagahiro Saito

    INTERFINISH 2020  2021.9 

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    Event date: 2021.9

    Presentation type:Oral presentation (general)  

  24. Characterization of Solution Plasma Derived Defective TiO2 Decorated N-doped Graphene for Photocatalysis International conference

    Xiaoyang Wang, Sangwoo Chae, Yelin Zhao, Rinyarat Naraprawatphong, Yasuyuki Sawada, Tongxiang Fan, Nagahiro Saito

    INTERFINISH 2020  2021.9 

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    Event date: 2021.9

    Presentation type:Oral presentation (general)  

  25. データサイエンスを⽤いた導電性カーボンの三次元構造再構築

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    Event date: 2020.9

    Language:Japanese   Presentation type:Poster presentation  

    Venue:Nagoya, Japan  

  26. クラスター分析を⽤いたリチウムイオン電池向けのカーボン構造と電気伝導の関係

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    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Nagoya, Japan  

  27. Few-layered Carbon allotrope deposition on a transition metal catalyst using a liquid carbon solution synthesized by SPP.

    A. E. Romero Valenzuela, N. Saito

    表面技術協会 第141回講演大会 

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    Event date: 2020.3

    Language:English   Presentation type:Poster presentation  

  28. 溶液プラズマで合成した N ドープカーボンドットからのニトロ芳香族分子のセンシング

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    Event date: 2020.3

    Language:Japanese   Presentation type:Poster presentation  

    Venue:Tokyo, Japan  

  29. ソリューションプラズマを用いた高品位窒素ドープグラフェン合成における Stone-Wales 転移に基づく五員環-六員環変形反応

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    Event date: 2020.3

    Language:Japanese   Presentation type:Poster presentation  

    Venue:Tokyo, Japan  

  30. ソリューションプラズマ法を用いた新規電気二重層キャパシタ材料の開発

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    Event date: 2020.3

    Language:Japanese   Presentation type:Poster presentation  

    Venue:Tokyo, Japan  

  31. Characterization of Solution Plasma Derived Heterographene for Photocatalysis

    Xiaoyang Wang, S. W. Chae, N. Saito,

    表面技術協会 第141回講演大会 

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    Event date: 2020.3

    Language:English   Presentation type:Poster presentation  

  32. In Situ Synthesis of Amino Siloxane Oligomer-Linked Nanocarbon For Antibiotic Removal

    M. Tipplook, N. Saito

    表面技術協会 第141回講演大会 

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    Event date: 2020.3

    Language:English   Presentation type:Poster presentation  

  33. N+-doped Graphene by Solution Plasma International conference

    S. W. Chae, P. Pornaroontham, R. Naraprawatphong, X. Wang, N. Saito

    Plasma Surface Engineering Satellite 2020 

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    Event date: 2020.2

    Language:English   Presentation type:Oral presentation (invited, special)  

  34. Quantitative Structure-Activity Relationship for Carbons prepared by Solution Plasma International conference

    J. M. Moon, S. W. Chae, P. Pornaroontham, R. Naraprawatphong, X. Wang, T. Watanabe, N. Saito

    Plasma Surface Engineering Satellite 2020 

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    Event date: 2020.2

    Language:English   Presentation type:Poster presentation  

  35. Mechanisms of high grade nitrogen doped graphene synthesis from 5-member ring materials International conference

    Y. Muta, N. Saito

    The 2nd International Conference on Materials Research and Innovation (ICMARI 2019) 

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    Event date: 2019.12

    Language:English   Presentation type:Poster presentation  

  36. Solution plasma process: a novel method for wastewater treatment International conference

    P. Pornaroontham, M. Tipplook, H. M. Kim, S. Chae, N. Saito

    Materials Research Meeting Materials Innovation for Sustainable Development Goals (MRM 2019) 

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    Event date: 2019.12

    Language:English   Presentation type:Oral presentation (invited, special)  

  37. Synthesis of nitrogen-oxygen-codoped nanocarbons via solution plasma process and nitridation for CO2 adsorption International conference

    P. Pornaroontham, G. Panomsuwan, N. Saito

    Materials Research Meeting Materials Innovation for Sustainable Development Goals (MRM 2019) 

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    Event date: 2019.12

    Language:English   Presentation type:Poster presentation  

  38. One-Step Synthesis and Properties of Cationic Nitrogen-doped Graphene by Solution Plasma International conference

    S. W. Chae, G. Panomsuwan, N. Saito

    2019 Materials Research Society Fall Meeting & Exhibit (2019 MRS) 

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    Event date: 2019.12

    Language:English   Presentation type:Poster presentation  

  39. Liquid Phase Plasma Synthesis of Amino-Rich Carbonaceous as an Efficient Adsorbent for Removal of Heavy Metal Ions International conference

    M. Tipplook, A. E. Romero Valenzuela, N. Saito

    Materials Research Meeting Materials Innovation for Sustainable Development Goals (MRM 2019) 

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    Event date: 2019.12

    Language:English   Presentation type:Poster presentation  

  40. Synergistic Effect of Electrical Properties of Cationic Nitrogen-Doped Carbon and Carbon Nanotubes Composites Synthesized via Plasma Solution International conference

    S. W. Chae, T. Yana, N. Saito

    Materials Research Meeting Materials Innovation for Sustainable Development Goals (MRM 2019) 

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    Event date: 2019.12

    Language:English   Presentation type:Poster presentation  

  41. Solution Plasma and Hetero-Graphene International conference

    S. W. Chae, P. Pornaroontham, N. Saito

    Materials Research Meeting Materials Innovation for Sustainable Development Goals (MRM 2019) 

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    Event date: 2019.12

    Language:English   Presentation type:Oral presentation (invited, special)  

  42. Analyzing properties of nitrogen, boron and nitrogen-boron doped few-layer graphene coated copper nanoparticles synthesized by solution plasma for oxygen reduction reaction catalyst International conference

    P. Q. Phan, K. S. Kim, Y. Muta, M. Tipplook, S. W. Chae, N. Saito

    Materials Research Meeting Materials Innovation for Sustainable Development Goals (MRM 2019) 

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    Event date: 2019.12

    Language:English   Presentation type:Poster presentation  

  43. One-pot synthesis of MnO2-carbon hybrids for enhancement of the cationic dyes removal International conference

    H. M. Kim, S.G. Lee, N. Saito

    Materials Research Meeting Materials Innovation for Sustainable Development Goals (MRM 2019) 

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    Event date: 2019.12

    Language:English   Presentation type:Poster presentation  

  44. A new synthesis route to prepare amphiphilic Pt/C catalyst for highly efficient proton exchange membrane fuel cell International conference

    M. Tipplook, N. Saito

    The 2nd International Conference on Materials Research and Innovation (ICMARI 2019) 

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    Event date: 2019.12

    Language:English   Presentation type:Poster presentation  

  45. Preparation of Lectin-recognition Hydrogels Layers Layer on SPR Sensor Chips by Molecular Imprinting using Carbohydrate Ligands International conference

    R.Naraprawatphong, N. Saito, A. Kawamura, T. Miyata

    The 2nd International Conference on Materials Research and Innovation (ICMARI 2019) 

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    Event date: 2019.12

    Language:English   Presentation type:Oral presentation (general)  

  46. Investigation of N-doped Carbon Dots Synthesized by Solution Plasma for Detection of Nitro Aromatic Molecules International conference

    K. S. Kim, J. M. Moon, N. Saito

    Materials Research Meeting Materials Innovation for Sustainable Development Goals (MRM 2019) 

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    Event date: 2019.12

    Language:English   Presentation type:Poster presentation  

  47. One-Pot Synthesis of Cationic Nitrogen-doped Graphene International conference

    S. W. Chae, G. Panomsuwan, N. Saito

    The 2nd International Conference on Materials Research and Innovation (ICMARI 2019) 

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    Event date: 2019.12

    Language:English   Presentation type:Poster presentation  

  48. Highly Cationic Nitrogen-doped Graphene to Enhance Electric Properties via Solution Plasma International conference

    S. W. Chae, G. Panomsuwan, N. Saito

    Materials Research Meeting Materials Innovation for Sustainable Development Goals (MRM 2019) 

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    Event date: 2019.12

    Language:English   Presentation type:Poster presentation  

  49. A novel synthesis of smart Pt/C catalyst for proton exchange membrane fuel cell

    M. Tipplook, N. Saito

    The 3rd Meeting for the Study of Next-generation Smart Materials Creation and Application Development 

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    Event date: 2019.11

    Language:English   Presentation type:Poster presentation  

  50. A one-step procedure for synthesizing core-shell nanospheres of metal nanoparticles protected by nitrogen-doped few-layer graphene

    Phu Quoc Phan, K. S. Kim, Y. Muta, M. Tipplook, S. W. Che, N. Saito

    The 3rd Meeting for the Study of Next-generation Smart Materials Creation and Application Development 

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    Event date: 2019.11

    Language:English   Presentation type:Poster presentation  

  51. Synthesis and Purification Process for High Grade Graphene Materials International conference

    Y. Muta, N. Saito

    Asian-European International Conference on Plasma Surface Engineering 2019 (AEPSE 2019) 

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    Event date: 2019.9

    Language:English   Presentation type:Poster presentation  

  52. A study of Cationic Nitrogen-doped Carbon Wrapping Carbon nanotubes with excellent electrical conductivity and high carrier concentration International conference

    S.W. Chae, T. Yana, N. Saito

    Asian-European International Conference on Plasma Surface Engineering 2019 (AEPSE 2019) 

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    Event date: 2019.9

    Language:English   Presentation type:Poster presentation  

  53. Solution Plasma Synthesis of Nitrogen-doped Few-layer Graphene Coated Copper and Silver Nanoparticles for Oxygen Reduction Reaction Catalyst under Acid Condition International conference

    Phu Quoc Phan, K. S. Kim, Yukihiro Muta, M. Tipplook, S. W. Chae, N. Saito

    Asian-European International Conference on Plasma Surface Engineering 2019 (AEPSE 2019) 

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    Event date: 2019.9

    Language:English   Presentation type:Poster presentation  

  54. Synthesis of purple benzene-derived MnO2-carbon hybrids for enhancement of the cationic dyes removal International conference

    H.M. Kim, S.G. Lee, N. Saito

    Asian-European International Conference on Plasma Surface Engineering 2019 (AEPSE 2019) 

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    Event date: 2019.9

    Language:English   Presentation type:Poster presentation  

  55. A Novel Amino-rich Carbon Synthesis through Liquid Phase Plasma for Efficient Antibiotic Capture International conference

    M. Tipplook, N. Saito

    Asian-European International Conference on Plasma Surface Engineering 2019 (AEPSE 2019) 

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    Event date: 2019.9

    Language:English   Presentation type:Oral presentation (general)  

  56. Synthesis of Cationic N-doped Graphene via Solution Plasma International conference

    S. W. Chae, G. Panomsuwan, N. Saito

    Asian-European International Conference on Plasma Surface Engineering 2019 (AEPSE 2019) 

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    Event date: 2019.9

    Language:English   Presentation type:Poster presentation  

  57. Carbon dioxide adsorption on nitrogen-oxygen-codoped nanocarbons via solution plasma process and nitridation International conference

    P. Pornaroontham, G. Panomsuwan, N. Saito

    Asian-European International Conference on Plasma Surface Engineering 2019 (AEPSE 2019) 

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    Event date: 2019.9

    Language:English   Presentation type:Poster presentation  

  58. Synthesis of highly N-doped carbon dots through solution plasma for molecular detection International conference

    K. Kim, J. Moon, N. Saito

    Asian-European International Conference on Plasma Surface Engineering 2019 (AEPSE 2019) 

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    Event date: 2019.9

    Language:English   Presentation type:Poster presentation  

  59. 高品位ヘテログラフェン獲得に向けたソリューションプラズマ合成及び精製プロセスの確立

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    Event date: 2019.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Fukuoka, Japan  

  60. Synthesis of highly N doped carbon dots through solution plasma for molecular detection

    K. S. Kim, N. Saito

    第80回応用物理学会秋季学術講演会 

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    Event date: 2019.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  61. Synthesis of N-doped carbon dot by solution plasma and its detection performance of nitro molecule

    K. S. Kim, N. Saito

    表面技術協会 第140回講演大会 

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    Event date: 2019.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  62. Synthesis of Cationic N-Doped Graphene via Solution Plasma

    S. W. Chae, N. Saito

    表面技術協会 第140回講演大会 

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    Event date: 2019.9

    Language:Japanese   Presentation type:Poster presentation  

  63. Stone-Wales転移に基づく五員環分子由来窒素ドープグラフェン合成メカニズム

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    Event date: 2019.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Hokkaido, Japan  

  64. High Planarity Nitrogen-doped Grahene Synthesis from Imidazole Ring Materials using Solution Plasma Process International conference

    Y. Muta, N. Saito

    The 5th edition of Nanotech France 2019 

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    Event date: 2019.6

    Language:English   Presentation type:Oral presentation (general)  

  65. Solution Plasma Process Synthesis Metal-Free Porphyrin Functionalized Carbon Nano-Sheet Supported Platinum Nanoparticle for PEMFCs International conference

    M. Tipplook, N. Saito

    The 5th edition of Nanotech France 2019 

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    Event date: 2019.6

    Language:English   Presentation type:Oral presentation (general)  

  66. Synthesis and Properties of Cationic Nitrogen-Doped Carbon Wrapped SWCNTs International conference

    S.W Chae, M. A. Bratescu, N. Saito

    The Final Seminar on JSPS Core-to-Core Program (B. Asia-Africa Science Platforms) “Establishment of Research Hub for Compact Mobility Model in the ASEAN Region 

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    Event date: 2018.12

    Language:English   Presentation type:Poster presentation  

  67. Solution Plasma Catalyst for CH Activation International conference

    N. Saito

    The International Conference on Advanced and Applied Petroleum, Petrochemicals, and Polymers (ICAPPP 2018) 

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    Event date: 2018.12

    Language:English   Presentation type:Oral presentation (general)  

  68. One-Step Solution Plasma Synthesis of Hybrid Silane-Modified C/Pt Catalyst for Enhanced PEM Fuel Cell Performance International conference

    M. Tipplook, M. A. Bratescu, N. Saito

    The International Conference on Advanced and Applied Petroleum, Petrochemicals, and Polymers (ICAPPP 2018) 

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    Event date: 2018.12

    Language:English   Presentation type:Poster presentation  

  69. Cationic N Doped Graphene Synthesis Mechanism of Transformed from Pentagonal Monomer International conference

    Y. Muta, M. A. Bratescu, N. Saito

    The International Conference on Advanced and Applied Petroleum, Petrochemicals, and Polymers (ICAPPP 2018) 

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    Event date: 2018.12

    Language:English   Presentation type:Poster presentation  

  70. Synthesis of Highly Nitrogen-Doped Carbon Dots from Organic Monomer by Solution Plasma International conference

    K.S. Kim, N. Saito

    The International Conference on Advanced and Applied Petroleum, Petrochemicals, and Polymers (ICAPPP 2018) 

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    Event date: 2018.12

    Language:English   Presentation type:Poster presentation  

  71. Solution plasma synthesis of core-shell copper particle protected by nitrogen doped multilayer graphene as an oxygen reduction reaction catalyst International conference

    P.Q. Phu, K.S. Kim, S. W. Chae, Y. Muta, M. Tipplook, M. A. Bratescu, N. Saito

    The International Conference on Advanced and Applied Petroleum, Petrochemicals, and Polymers (ICAPPP 2018) 

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    Event date: 2018.12

    Language:English   Presentation type:Poster presentation  

  72. Synthesis of Cationic Nitrogen-Doped Carbon Wrapping Carbon Nanotubes with High Electrical Conductivity International conference

    S.W Chae, M. A. Bratescu, N. Saito

    The International Conference on Advanced and Applied Petroleum, Petrochemicals, and Polymers (ICAPPP 2018) 

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    Event date: 2018.12

    Language:English   Presentation type:Poster presentation  

  73. 5 to 6 members ring transformation mechanism of cationic N doped graphene synthesis using solution plasma International conference

    Y. Muta, M. A. Bratescu, N. Saito

    The Final Seminar on JSPS Core-to-Core Program (B. Asia-Africa Science Platforms) “Establishment of Research Hub for Compact Mobility Model in the ASEAN Region 

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    Event date: 2018.12

    Language:English   Presentation type:Poster presentation  

  74. Facile Solution plasma Process synthesis of Self-assembled Hybrid-Oganosilane Coating on Carbon/Pt Catalyst for PEM Fuel Cell International conference

    M. Tipplook, M. A. Bratescu, N. Saito

    The Final Seminar on JSPS Core-to-Core Program (B. Asia-Africa Science Platforms) “Establishment of Research Hub for Compact Mobility Model in the ASEAN Region 

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    Event date: 2018.12

    Language:English   Presentation type:Poster presentation  

  75. Solution plasma synthesis of core-shell copper particle protected by nitrogen doped multilayer graphene as an oxygen reduction reaction catalyst International conference

    P.Q. Phu, K.S. Kim, S.W. Chae, Y. Muta, M. Tipplook, M. A. Bratescu, N. Saito

    The Final Seminar on JSPS Core-to-Core Program (B. Asia-Africa Science Platforms) “Establishment of Research Hub for Compact Mobility Model in the ASEAN Region 

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    Event date: 2018.12

    Language:English   Presentation type:Poster presentation  

  76. Synthesis of highly N doped carbon dots through solution plasma for molecular detection International conference

    K.S. Kim, M. A. Bratescu, N. Saito

    The Final Seminar on JSPS Core-to-Core Program (B. Asia-Africa Science Platforms) “Establishment of Research Hub for Compact Mobility Model in the ASEAN Region 

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    Event date: 2018.12

    Language:English   Presentation type:Poster presentation  

  77. 五員環ヘテロ環元素由来窒素ドープグラフェン合成に関する反応メカニズムの解析

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    Event date: 2018.12

    Presentation type:Poster presentation  

    Venue:Nagoya, Japan  

  78. Fabrication of Ammonia Gas Sensor Using Metal-free Porphyrin-Based Nano-Assembled Thin Films: Effect of Silanization Pretreatment on Substrate

    M. Tipplook, M.A. Bratescu, N. Saito

    平成30年度表面技術若手研究者・技術者研究交流発表会  

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    Event date: 2018.12

    Language:English   Presentation type:Oral presentation (general)  

  79. 五員環モノマーを原料とした高結晶性窒素ドープグラフェン合成に関する反応メカニズムの解析

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    Event date: 2018.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Hokkaido, Japan  

  80. In situ Solution Plasma Synthesis of Amine-Terminated Silane-Modified Carbon Nanoparticles for Efficient Removal of Heavy Metal Ions

    M. Tipplook, M.A. Bratescu, N. Saito

    第79回応用物理学会秋季学術講演会 

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    Event date: 2018.9

    Language:Japanese   Presentation type:Poster presentation  

  81. Effect of Nitrogen doped on the Fluorescence property of Carbon dots synthesized through Solution Plasma

    K. S. Kim, M.A. Bratescu, N. Saito

    第79回応用物理学会秋季学術講演会 

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    Event date: 2018.9

    Language:Japanese   Presentation type:Poster presentation  

  82. Cationic N-doped carbon wrapping CNT to enhance electrical conductivity

    S. W. Chae, M.A. Bratescu, N. Saito

    第79回応用物理学会秋季学術講演会 

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    Event date: 2018.9

    Language:Japanese   Presentation type:Poster presentation  

  83. 窒素ドープグラフェンのソリューションプラズマ合成における五員環-六員環変形反応メカニズムの解析

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    Event date: 2018.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Nagoya, Japan  

  84. カーボン量子ドットの量子収率と電子バンド 16-14B 15:13 構造に及ぼす窒素ドーピングの影響

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    Event date: 2018.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Hokkaido, Japan  

  85. Novel of Nano-Assembled Tetra-phenylporphyrin on Organosilane-Modified Substrate for Ammonia Gas Sensor

    M. Tipplook, M.A. Bratescu, N. Saito

    表面技術協会 第138回講演大会  

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    Event date: 2018.9

    Language:English   Presentation type:Oral presentation (general)  

  86. Highly Nitrogen doped Carbon dots Synthesized from Organic Monomer through Solution Plasma International conference

    K.S. Kim, M. A. Bratescu, N. Saito

    The 6th International Workshop and the 5th International Mini Workshop on Solution Plasma and Molecular Technology (SPM-6 & Mini SPM-5) 

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    Event date: 2018.6

    Language:English   Presentation type:Oral presentation (general)  

  87. N-doped carbon rapping CNTs to enhance electrical conductivity International conference

    S.W Chae, M. A. Bratescu, N. Saito

    The Third Seminar on JSPS Core-to-Core Program (B. Asia-Africa Science Platforms) “Establishment of Research Hub for Compact Mobility Model in the ASEAN Region 

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    Event date: 2018.6

    Language:English   Presentation type:Poster presentation  

  88. Solution Plasma Catalyst and the CH activation International conference

    N. Saito, S.W Chae, K.S. Kim, Y. Muta, M. A. Bratescu

    The 6th International Workshop and the 5th International Mini Workshop on Solution Plasma and Molecular Technology (SPM-6 & Mini SPM-5) 

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    Event date: 2018.6

    Language:English   Presentation type:Oral presentation (invited, special)  

  89. Solution Plasma and Hetero-graphene International conference

    N. Saito, S.W Chae, K.S. Kim, Y. Muta, M. Tipplook

    Symposium on Biomimetic Materials Processing (BMMP 2018) 

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    Event date: 2018.6

    Language:English   Presentation type:Oral presentation (invited, special)  

  90. Facile Synthesis of Amine-Modified Carbon Nanosorbents and Their Application in Heavy Metal Ions Removal International conference

    M. Tipplook, M. A. Bratescu, N. Saito

    The 1st CU-NU Joint Symposium “Exploring the Possibility of Establishing a Joint Degree Program between Chulalongkorn University and Nagoya University” 

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    Event date: 2018.6

    Language:English   Presentation type:Oral presentation (general)  

  91. Transformation Mechanism of Cationic N doped Graphene Synthesis from Pentagonal Monomer Using Solution Plasma International conference

    Y. Muta, M. A. Bratescu, N. Saito

    The 6th International Workshop and the 5th International Mini Workshop on Solution Plasma and Molecular Technology (SPM-6 & Mini SPM-5) 

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    Event date: 2018.6

    Language:English   Presentation type:Oral presentation (general)  

  92. Carbon dioxide Capture on Nitrogen-doped Carbon Nanoparticle Derived from Aromatic Compounds via Solution Plasma and Nitriding Processes International conference

    P. Pornaroontham, S. Pongstabodee, N. Saito

    The 3rd Seminar on JSPS Core-to-Core Program (B. Asia-Africa Science Platforms) “Establishment of Research Hub for Compact Mobility Model in the ASEAN Region 

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    Event date: 2018.2

    Language:English   Presentation type:Poster presentation  

  93. Enhancement of Nafion-ionomer coverage on Pt-carbons International conference

    M. Tipplook, M. A. Bratescu, N. Saito

    The 3rd Seminar on JSPS Core-to-Core Program (B. Asia-Africa Science Platforms) “Establishment of Research Hub for Compact Mobility Model in the ASEAN Region” 

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    Event date: 2018.2

    Language:English   Presentation type:Poster presentation  

  94. The nano-structure and their properties of exfoliation several layers-stacked graphene prepared by solution plasma in graphite dispersed in aqueous solutions International conference

    S.W Chae, M. A. Bratescu, N. Saito

    The 4th International Symposium on Hybrid Materials and Processing (HyMap 2017) 

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    Event date: 2017.11

    Language:English   Presentation type:Poster presentation  

  95. Thin Films Fabrication of Tetraphenyl Porphyrin Deposited on Amino Silane-Modified Substrate for Acetone Gas Sensor International conference

    M. Tipplook, M. A. Bratescu, N. Saito

    2017 Workshop on Biomimetic Materials and Energy-saving Materials (2017BMEM) 

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    Event date: 2017.11

    Language:English   Presentation type:Oral presentation (general)  

  96. Self-Assembled TSPP Stacking Structures through Molecular Recognition on the Self-Assembled Monolayers Modified Surface from the Aqueous Solution International conference

    M. Tipplook, M. A. Bratescu, N. Saito

    The 4th International Symposium on Hybrid Materials and Processing (HyMaP2017) 

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    Event date: 2017.11

    Language:English   Presentation type:Poster presentation  

  97. Carbon dioxide Capture on Aminated Carbon Nanoparticle Derived from Aromatic Compounds via Solution Plasma Process International conference

    P. Pornaroontham, N. Saito, S. Pongstabodee

    2017 Workshop on Biomimetic Materials and Energy-Saving Materials 

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    Event date: 2017.11

    Language:English   Presentation type:Oral presentation (general)  

  98. Few-Layers Graphene Sheets Synthesis from Graphite by Solution Plasma International conference

    S.W Chae, M. A. Bratescu, N. Saito

    2017 workshop on Biomimetic Materials and Energy-Saving Materials 

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    Event date: 2017.11

    Language:English   Presentation type:Oral presentation (general)  

  99. Chitosan Polycation Supramolecular as Template-Assisted for Control Aggregation of Meso-tetrakis (4-sulfonatophenyl) Porphyrin International conference

    M. Tipplook, J. Hieda, T. Ueno, M. A. Bratescu, N. Saito

    The 15th International Conference on Advance Materials (IUMRS-ICAM2017) 

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    Event date: 2017.8

    Language:English   Presentation type:Poster presentation  

  100. Synthesis of hierarchical porous δ-MnO2 by solution plasma with effective cationic dye removal capability International conference

    H. M. Kim, A. Watthanaphanit, N. Saito

    The 5th International Workshop and The 4th International Mini Workshop on Solution Plasma and Molecular Technology (SPM-5 & Mini SPM-4) 

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    Event date: 2017.6

    Language:English   Presentation type:Oral presentation (general)  

  101. Peeled and CN-Graphene from Graphite by Ionic Liquid via Solution Plasma International conference

    S.W Chae, M. A. Bratescu, N. Saito

    The 5th International Workshop and The 4th International Mini Workshop on Solution Plasma and Molecular Technology (SPM-5 & Mini SPM-4) 

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    Event date: 2017.6

    Language:English   Presentation type:Oral presentation (general)  

  102. ソリューションプラズマを用いたグラファイトの剥離・修飾による機能化グラフェンシートの作製

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    Event date: 2016.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:Nagoya, Japan  

  103. Synthesis of colloidal MnO2 with sheet-like structure by solution plasma process in permanganate aqueous solution International conference

    H. M. Kim, T. Ueno, N. Saito

    The 4th International Workshop and The 3rd International Mini Workshop on Solution Plasma and Molecular Technology (SPM-4 & Mini SPM-3) 

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    Event date: 2016.6

    Language:English   Presentation type:Oral presentation (general)  

  104. ソリューションプラズマのC-H 活性化反応を利用したクラウンエーテル構造を含むカーボン材料の合成

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    Event date: 2016.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Tokyo, Japan  

  105. ソリューションプラズマによる芳香族系炭化水素からのカーボン合成反応機構の解析

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    Event date: 2016.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Tokyo, Japan  

  106. ソリューションプラズマによるZnバルク材料からのZnOナノ粒子の合成

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    Event date: 2016.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Tokyo, Japan  

  107. Synthesis of two dimensional carbon nanosheets through C-H activation reaction in solution plasma

    H. M. Kim, N. Saito

    表面技術協会 第133回講演大会 

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    Event date: 2016.3

    Language:Japanese   Presentation type:Oral presentation (general)  

  108. Preparation and Catalytic Evaluation of Natural Leaf Supported Gold Nanoparticles International conference

    S. Yoshida, A. Watthanaphanit, N. Saito

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    Event date: 2015.12

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  109. One-step Preparation of Ultrathin MnO2 Nanosheets by Plasma Discharge in Liquid Phase International conference

    Hyemin Kim, Anyarat Watthanaphanit, Nagahiro Saito

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    Event date: 2015.12

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  110. Synthesis of Catechin-modified Chitosan for Reduction 4-Nitrophenol International conference

    Y. Kondo, A. Watthanaphanit, N. Saito

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    Event date: 2015.12

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  111. Conversion of Sugars to HMF by a Physical Technique: Solution Plasma Process International conference

    Y. Muta, A. Watthanaphanit, N. Saito

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    Event date: 2015.12

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  112. Synthesis of palm to smart carbon materials by the solution plasma processing International conference

    Md. Zahidul Islam, Anyarat Watthanaphanit, and Nagahiro Saito

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    Event date: 2015.12

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  113. Synthesis of palm to smart carbon materials by the solution plasma processing International conference

    Md. Zahidul Islam, Anyarat Watthanaphanit, and Nagahiro Saito

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    Event date: 2015.12

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  114. The Proposal of Novel Oxygen Reduction Reaction Catalyst Supported by First-Principles Calculation

    T. Morishita, T. Ueno, N, Saito

    第25回日本MRS年次大会 

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    Event date: 2015.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:横浜情報文化センター   Country:Japan  

  115. Enhancement of ammonia gas detection sensitivity by surface treatment of an optical fiber

    伊澤昂汰、リ オイルン、マリア アントワネッタ ブラテスク、齋藤永宏(K. Izawa, O. L. Li, Maria.A.Bratescu, N. Saito)

    第25回日本MRS年次大会 

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    Event date: 2015.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:横浜情報文化センター   Country:Japan  

  116. Ultra High Sensitivity Attenuated Total Reflectance Based Ammonia Gas Sensor

    Kyu-Sung Kim, Maria-Antoaneta Bratescu, Oi Lun Helena Li, Nagahiro Satio

    第25回日本MRS年次大会 

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    Event date: 2015.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Yokohama, Japan   Country:Japan  

  117. ソリューションプラズマを用いたメソポーラスカーボンの合成

    吉田彰仁、上野智永、齋藤永宏

    第25回日本MRS年次大会 

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    Event date: 2015.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:横浜市開港記念館   Country:Japan  

  118. 第一原理計算を用いた酸素還元反応に対する白金の触媒性起源解明

    森下哲典、上野智永、齋藤永宏

    平成27年度表面技術若手研究者・技術者研究交流発表会 

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    Event date: 2015.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋市工業研究所   Country:Japan  

  119. Non-Platinum Catalyst Design for Fuel Cell Cathode Based on the Computational Analysis International conference

    T. Morishita, T. Ueno, N. Saito

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    Event date: 2015.11 - 2015.12

    Language:English   Presentation type:Poster presentation  

    Country:United States  

  120. Synthesis and Crystal Structure Control of Birnessite-type MnO2 by Solution Plasma Process and their Characterizations International conference

    Hyemin Kim, Anyarat Watthanaphanit, Nagahiro Saito

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    Event date: 2015.11 - 2015.12

    Language:English   Presentation type:Poster presentation  

    Country:United States  

  121. Electronic States Analysis of Metal Nanocluster for Oxygen Reduction Catalyst in Fuel Cells International conference

    T. Morishita, T. Ueno, N. Saito

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    Event date: 2015.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  122. Exhaled breath analysis of ammonia gas using colorimetric attenuated total reflectance spectroscopy International conference

    MariaAntoaneta Bratescu, Kouta Isawa, Takayoshi Kiguchi,OiLun Li,Nagahiro Saito

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    Event date: 2015.10

    Language:English   Presentation type:Poster presentation  

    Country:United States  

  123. Exhaled Breath Analysis of Ammonia Gas using Colorimetric Attenuated Total Reflectance Spectroscopy International conference

    MariaAntoaneta Bratescu, Kouta Izawa, Takayoshi Kiguchi, Oi Lun Li, Nagahiro Saito

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    Event date: 2015.10

    Language:English   Presentation type:Poster presentation  

    Country:United States  

  124. Analysis of benzoquinone decomposition in solution plasma process International conference

    M. A. Bratescu, N. saito

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    Event date: 2015.9 - 2015.10

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  125. Analysis of organic compounds decomposition in solution plasma by Coherent anti-Stokes Raman Spectroscopy International conference

    Maria Antoaneta Bratescu, Nagahiro Saito

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    Event date: 2015.9 - 2015.10

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  126. ペンシル型水中プラズマ発生装置の開発と評価

    小山啓輔、Oi Lun LI、齋藤永宏

    第39回静電気学会全国大会 

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    Event date: 2015.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:首都大学東京   Country:Japan  

  127. Conversion of palm oil to carbon materials by plasma discharge in solution International conference

    Md. Zahidul Islam, Anyarat Watthanaphanit, and Nagahiro Saito

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    Event date: 2015.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Korea, Republic of  

  128. Preparation of Nanostructured Manganese Dioxide by Solution Plasma Processing International conference

    H. M. Kim, A. Watthanaphanit, N. Saito

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    Event date: 2015.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Korea, Republic of  

  129. Conversion of palm oil to carbon materials by plasma discharge in solution International conference

    Md. Z. Islam*, A. Watthanaphanit, N. Saito

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    Event date: 2015.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Korea, Republic of  

  130. Pre-treatment of Cellulose for Conversion to Product Material International conference

    S. Nemoto, A. Watthanaphanit, N. Saito

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    Event date: 2015.9

    Language:English   Presentation type:Poster presentation  

    Country:Korea, Republic of  

  131. 表面処理による光ファイバーアンモニアガスセンサーの感度向上

    伊澤昂汰、リ オイルン、マリア アントワネッタ ブラテスク、齋藤永宏(K. Izawa, O. L. Li, Maria.A.Bratescu, N. Saito)

    セラミックス協会第28回秋季シンポジウム 

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    Event date: 2015.9

    Language:Japanese   Presentation type:Poster presentation  

    Venue:富山大学   Country:Japan  

  132. エバネセント吸光原理に基づくアルコールセンサの開発

    水谷隼大、リオイルン、ブラテスク マリア、齋藤永宏

    セラミックス協会第28回秋季シンポジウム 

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    Event date: 2015.9

    Language:Japanese   Presentation type:Poster presentation  

    Venue:富山大学   Country:Japan  

  133. One-Step Solution Plasma Synthesis of Birnessite-type Nanostructured MnO2 by the Addition of D-glucose and their Characterizations

    Hyemin Kim, Anyarat Watthanaphanit, 齋藤永宏

    2015年日本金属学会秋期講演大会 

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    Event date: 2015.9

    Language:Japanese   Presentation type:Poster presentation  

    Venue:九州, Japan   Country:Japan  

  134. 葉を用いたナノ粒子担持体の作製と評価

    吉田修平、ワッタナパニット アンヤラット、齋藤永宏

    第64回高分子討論会 

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    Event date: 2015.9

    Language:Japanese   Presentation type:Poster presentation  

    Venue:東北大学川内キャンパス   Country:Japan  

  135. ソリューションプラズマを用いたカテキン修飾キトサンの合成

    近藤悠介、ワッタナパニット アンヤラット、齋藤永宏

    第64回高分子討論会 

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    Event date: 2015.9

    Language:Japanese   Presentation type:Poster presentation  

    Venue:東北大学   Country:Japan  

  136. Control of Carbon Conductivity with Induction of Naphthalene and Anthracene by Using Solution Plasma Process International conference

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    Event date: 2015.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  137. ソリューションプラズマによるメソポーラスカーボンの合成

    吉田彰仁、上野智永、齋藤永宏

    第76回 応用物理学会秋季学術講演会 

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    Event date: 2015.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋国際会議場   Country:Japan  

  138. Preparation and Catalytic Evaluation of Natural Leaf Supported Gold Nanoparticles International conference

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    Event date: 2015.9

    Language:English   Presentation type:Poster presentation  

    Country:Morocco  

  139. Simple One-Step Synthesis of Nanostructured MnO2 Colloidal Suspension by Plasma Discharge in Liquid International conference

    Hyemin Kim, Anyarat Watthanaphanit, Nagahiro Saito

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    Event date: 2015.9

    Language:English   Presentation type:Poster presentation  

    Country:Morocco  

  140. Encapsulation of Gold Nanoparticles onto Green Tea Extract-Modified Chitosan Flakes as Catalyst for 4-Nitrophenol Reduction International conference

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    Event date: 2015.9

    Language:English   Presentation type:Poster presentation  

    Country:Morocco  

  141. ソリューションプラズマ分子技術

    齋藤永宏

    セラミックス協会 第27回 秋季シンポジウム 

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    Event date: 2015.9

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:鹿児島大学   Country:Japan  

  142. Develop of high sensitivity H2S gas sensor using ATR method

    表面技術協会第132回講演大会

    表面技術協会第132回講演大会 

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    Event date: 2015.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:信州大学   Country:Japan  

  143. 表面処理によるエバネッセント光吸光ガスセンサーの感度向上

    伊澤昂汰、リ オイルン、マリア アントワネッタ ブラテスク、齋藤永宏(K. Izawa, O. L. Li, Maria.A.Bratescu, N. Saito)

    表面技術協会132回講演大会 

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    Event date: 2015.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:信州大学   Country:Japan  

  144. エバネセント吸光原理に基づくアルコールセンサの開発

    水谷隼大、リ オイルン、ブラテスク マリア、齋藤永宏

    表面技術協会第132回講演大会 

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    Event date: 2015.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:信州大学   Country:Japan  

  145. ナフタレンおよびアントラセンの微量添加によるソリューションプラズマ合成カーボン材料の導電性向上

    リフンソン、上野智永、齋藤永宏

    平成27年度(2015年) 弟132回表面技術学会春季大会 

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    Event date: 2015.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:信州大学   Country:Japan  

  146. マイクロ波プラズマCVDによる窒化炭素の合成

    平田泰章、上野智永、齋藤永宏

    第132回表面技術協会 

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    Event date: 2015.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:信州大学 長野(工学)キャンパス   Country:Japan  

  147. ソリューションプラズマ合成カーボン材料の細孔構造制御

    吉田彰仁、上野智永、齋藤永宏

    第132回講演大会 表面技術協会 

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    Event date: 2015.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:信州大学 工学(長野)キャンパス   Country:Japan  

  148. Carbon production from palm oil by plasma discharge in solution International conference

    Md. Zahidul Islam, Anyarat Watthanaphanit1, and Nagahiro Saito

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    Event date: 2015.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  149. Carbon production from palm oil by plasma discharge in solution International conference

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    Event date: 2015.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  150. 高繰り返し周波数領域でのソリューションプラズマによるカーボン合成

    玄 光龍,上野智永,齋藤永宏

    表面技術学会 

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    Event date: 2015.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:信州大学   Country:Japan  

  151. 粉砕処理したセルロースのソリューションプラズマによる分解

    根本心平、ワッタナパニット アンヤラット、齋藤永宏

    平成27年度資源・素材関係学協会合同秋季大会 

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    Event date: 2015.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:愛媛大学   Country:Japan  

  152. Ultra High Sensitivity Attenuated Total Reflectance Based Ammonia Gas

    第8回NTTH合同シンポジウム 

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    Event date: 2015.8

    Language:Japanese   Presentation type:Poster presentation  

    Venue:Urumqi, Xinjiang, China   Country:China  

  153. Solution Plasma Processing for Molecular Technology International conference

    O.L.Li, N. Saito

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    Event date: 2015.7

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Korea, Republic of  

  154. Synthesis of Heteroatom Based ORR Catalysts with Carbon Support by Innovative Solution Plasma Process for Energy Storage System International conference

    O. L. Li, D-W. Kim, N. Saito

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    Event date: 2015.6

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  155. A Investigation of Metal Nanocluster Structure and Electric Property International conference

    T. Ueno, T. Morishita, M. Mizushita, N. Saito, K. Takenaka, Y. Setsuhara, G. Uchida

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    Event date: 2015.6

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  156. ソリューションプラズマによるカーボン合成における細孔構造制御

    吉田彰仁、上野智永、齋藤永宏

    平成26年度日本材料科学会学術講演大会 

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    Event date: 2015.6

    Language:Japanese   Presentation type:Poster presentation  

    Venue:東京都新宿区西新宿1-24-2 工学院大学新宿キャンパス   Country:Japan  

  157. ソリューションプラズマの安定性に対する気泡形成過程の影響

    簾智仁、上野智永、 齋藤永宏

    平成27年度 日本材料科学会 学術講演大会 

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    Event date: 2015.6

    Language:Japanese   Presentation type:Poster presentation  

    Venue:工学院大学   Country:Japan  

  158. ソリューションプラズマを用いた高分子複合材料の合成

    根本心平、アンヤラット ワッタナパニット、齋藤永宏

    第64回高分子学会年次大会 

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    Event date: 2015.5

    Language:Japanese   Presentation type:Poster presentation  

    Venue:札幌コンベンションセンター   Country:Japan  

  159. ソリューションプラズマによるHMFの単一プロセス生成

    牟田幸浩, W. Anyarat, 齋藤永宏

    第64回高分子学会年次大会 

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    Event date: 2015.5

    Language:Japanese   Presentation type:Poster presentation  

    Venue:札幌コンベンションセンター   Country:Japan  

  160. Graphite Oxide/Cellulose Composites as Innovative Solid Support Material for DNA Extraction Applications International conference

    O. L. Li, G.A. Akceoglu, N. Saito

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    Event date: 2015.5 - 2015.6

    Language:English   Presentation type:Oral presentation (general)  

    Country:Thailand  

  161. One Step Synthesis of Nitrogen-Containing Carbon by Plasma Discharge in Aniline and Evaluation for Oxygen Reduction Reaction International conference

    K. Y. Hyun, T. Ueno, N. Saito

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    Event date: 2015.5

    Language:English   Presentation type:Oral presentation (general)  

    Country:Thailand  

  162. Nanostructured Manganese Dioxide Synthesized by Solution Plasma Processing International conference

    H. Y. Kim, A. Watthanaphanit, N. Saito

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    Event date: 2015.5

    Language:English   Presentation type:Oral presentation (general)  

    Country:Thailand  

  163. Synthesis of Carbon Nitride by Dual Microwave Plasma CVD International conference

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    Event date: 2015.5

    Language:English   Presentation type:Oral presentation (general)  

    Country:Thailand  

  164. Development of solution plasma reactor for direct biological application International conference

    K. Koyama, O. L. Li, N. Saito

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    Event date: 2015.5

    Language:English   Presentation type:Oral presentation (general)  

    Country:Thailand  

  165. Development of portable alcohol sensor based on evanescent wave absorption International conference

    H.Mizutani, O. L. Li, N. Saito

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    Event date: 2015.5

    Language:English   Presentation type:Oral presentation (general)  

    Country:Thailand  

  166. Immobilization of glucose oxidase on calcium alginate bead by the aid of plasma in liquid International conference

    Y. Kondo, A. Watthanaphanit, N, Saito

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    Event date: 2015.5

    Language:English   Presentation type:Oral presentation (general)  

    Country:Thailand  

  167. Conversion of sorbitol by plasma discharge in solution International conference

    S Yoshida, A Watthanaphanit, N Saito

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    Event date: 2015.5

    Language:English   Presentation type:Oral presentation (general)  

    Country:Thailand  

  168. The Specificity of Platinum Electric States as Oxygen Reduction Catalyst in Fuel Cells International conference

    T. Morishita, T. Ueno, N. Saito

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    Event date: 2015.5

    Language:English   Presentation type:Oral presentation (general)  

    Country:Thailand  

  169. Chemical-Free Synthesis of ZnO Nanoparticles by Solution Plasma Processing International conference

    S. Nemoto, S. Morishita, S. Y. Lee, A. Watthanaphanit, N. Saito

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    Event date: 2015.5

    Language:English   Presentation type:Oral presentation (general)  

    Country:Thailand  

  170. Synergistically Enhanced Electrochemical Activity (ORR) Nitrogen and Boron Doped Nanocarbon by Solution Plasma Process International conference

    Seunghyo Lee1, Tomonaga Ueno, Nagahiro Saito

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    Event date: 2015.5

    Language:English   Presentation type:Oral presentation (general)  

    Country:Thailand  

  171. A Computational Investigation of Metal Nanocluster Structure and Electronic Property International conference

    T. Morishita, T. Ueno, N. Saito

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    Event date: 2015.3

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  172. A Computational Investigation of Metal Nanocluster Structure and Electronic Property International conference

    T. Morishita, T. Ueno, N. Saito

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    Event date: 2015.3

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  173. High durable silica coated Pt/CNT for PEMFC application International conference

    W. Yaowarat, O. L. Li, N. Saito

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    Event date: 2015.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  174. Graphite Oxide/Cellulose Beads for DNA Extraction Applications International conference

    G. Akceoglu, O. Li, N. Saito

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    Event date: 2015.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  175. Solution Plasma Process for the Conversion of Guar Gum to Bioethanol International conference

    S. Nemoto, A. Watthanaphanit, N. Saito

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    Event date: 2015.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  176. Influence of Temperature on Free Radical Generation in Water-Ethanol Mixture Based Solution Plasma Due to Hydrogen-Bonding Network International conference

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    Event date: 2015.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  177. Direct and Controllable Synthesis of Nitrogen-Doped Carbon for Oxygen Reduction Reaction by Solution Plasma Process International conference

    K. Y. Hyun, T. Ueno, N. Saito

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    Event date: 2015.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  178. In-situ FT-IR Study on Water Adsorption Behavior Confined In Mesoporous Silica, FSM-16, having < 2 nm Pore Diameter International conference

    Y. Aoki, N. Zettsu, N. Saito

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    Event date: 2015.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  179. Enhancement the sensitivity of optical fiber gas sensor by surface treatment International conference

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    Event date: 2015.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  180. Conversion Ability of sugars to HMF by Solution Plasma Process International conference

    Y. MUTA, A. WATTHANAPHANIT, N. SAITO

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    Event date: 2015.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  181. CNx Nanosheets as Metal-Free Catalysts for the Oxygen Reduction Reaction by Solution Plasma Process International conference

    SEUNGHYO LEE, TOMONAGA UENO AND NAGAHIRO SAITO*

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    Event date: 2015.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  182. 水-アルコール混合溶液中ソリューションプラズマ反応場の解明: 気/液界面への水素結合の影響

    簾智仁、上野智永、齋藤永宏

    2015年 第62回応用物理学会春季学術講演会 

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    Event date: 2015.3

    Language:Japanese   Presentation type:Poster presentation  

    Venue:東海大学 湘南キャンパス   Country:Japan  

  183. 表面処理を利用した高感度光ファイバーセンサーの開発

    木口崇彦、伊澤昂汰、リ オイルン、齋藤永宏

    第62回応用物理学会春季学術講演会 

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    Event date: 2015.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東海大学湘南キャンパス   Country:Japan  

  184. デュアルマイクロ波プラズマCVDによる窒化炭素膜の合成

    平田泰章、上野智永、齋藤永宏

    表面技術協会第131回講演大会 

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    Event date: 2015.3

    Language:Japanese   Presentation type:Poster presentation  

    Venue:関東学院大学 横浜・金沢八景キャンパス   Country:Japan  

  185. ソリューションプラズマによるカーボン合成における溶媒の効果

    吉田彰仁、上野智永、齋藤永宏

    第131回表面技術協会 

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    Event date: 2015.3

    Language:Japanese   Presentation type:Poster presentation  

    Venue:関東学院大学 横浜・金沢八景キャンパス   Country:Japan  

  186. メソポーラスシリカ担持Pt 触媒の合成とPROX 反応触媒特性

    青木淑恵、是津信行、山本剛久、南部宏暢、齋藤永宏

    表面技術協会第131 回講演大会 

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    Event date: 2015.3

    Language:Japanese   Presentation type:Poster presentation  

    Venue:関東学院大学   Country:Japan  

  187. ソリューションプラズマによるカーボン合成における溶媒の効果

    吉田彰仁、上野智永、齋藤永宏

    第131回表面技術協会 

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    Event date: 2015.3

    Language:Japanese   Presentation type:Poster presentation  

    Venue:関東学院大学 横浜・金沢八景キャンパス   Country:Japan  

  188. ソリューションプラズマプロセスによる窒素とホウ素の異種元素ドーピング2Dカーボン材料の合成 International conference

    李 承效, 上野 智永, 齋藤 永宏

    第131回表面技術協会 

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    Event date: 2015.3

    Language:Japanese   Presentation type:Poster presentation  

    Venue:関東学院大学 横浜・金沢八景キャンパス   Country:Japan  

  189. Selective production of sugar alcohol from cellulose by solution plasma International conference

    Anyarat Watthanaphanit and Nagahiro Saito

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    Event date: 2015.1

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  190. Conversion Ability of Sugars to HMF by Solution Plasma Process International conference

    Y. MUTA, A. WATTHANAPHANIT, N. SAITO

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    Event date: 2015.1

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  191. プラズマを用いた超撥水・超親水表面の作製

    齋藤永宏

    第84回表面科学研究会 日本真空学会2015年1月研究例会 

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    Event date: 2015.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:機械振興会館   Country:Japan  

  192. ソリューションプラズマ分子技術~ヘテロ系カーボン触媒の創成

    上野智永、齋藤永宏

    2014年度先端化学セミナー ―界面の修飾および制御による高機能化― 

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    Event date: 2015.1

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:じばさん三重   Country:Japan  

  193. Solution plasma process and its applications. International conference

    Anyarat Watthanaphanit and Nagahiro Saito

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    Event date: 2015.1

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  194. Gd2SiO5 結晶の塩化物フラックス育成

    神谷雄人、青木淑恵、是津信行、齋藤永宏

    第9 回日本フラックス成長研究発表会 

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    Event date: 2014.12

    Language:Japanese   Presentation type:Poster presentation  

    Venue:高知大学   Country:Japan  

  195. Controllable Synthesis of Conductive Nitrogen Doped Carbon with Graphitic Walls by Solution Plasma Process International conference

    K. Y. Hyun, T. Ueno, N. Saito

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    Event date: 2014.11 - 2014.12

    Language:English   Presentation type:Poster presentation  

    Country:United States  

  196. Cellulose conversion to sugar alcohol by solution plasma processing International conference

    Anyarat Watthanaphanit, Hoonseung Lee, and Nagahiro Saito

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    Event date: 2014.11 - 2014.12

    Language:English   Presentation type:Oral presentation (general)  

    Country:United States  

  197. Cellulose conversion to sugar alcohol by solution plasma processing International conference

    Anyarat Watthanaphanit, Hoonseung Lee, and Nagahiro Saito

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    Event date: 2014.11 - 2014.12

    Language:English   Presentation type:Oral presentation (general)  

    Country:United States  

  198. Cellulose conversion to sugar alcohol by solution plasma processing International conference

    Anyarat Watthanaphanit, Hoonseung Lee, and Nagahiro Saito

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    Event date: 2014.11 - 2014.12

    Language:English   Presentation type:Oral presentation (general)  

    Country:United States  

  199. Synthesis of Nano-size Regulated Carbon Materials by Solution Plasma Processing International conference

    O.L.Li, N.Saito

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    Event date: 2014.11

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Korea, Republic of  

  200. Hydrocarbon structure effect on the production of carbon materials by the solution plasma process International conference

    A. Yoshida, T. Ueno, N. Saito

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    Event date: 2014.10 - 2014.11

    Language:English   Presentation type:Poster presentation  

    Country:Viet Nam  

  201. Nano-size Regulated Carbon Materials for Battery through Solution Plasma Processing International conference

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    Event date: 2014.7

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  202. Utilization of solution plasma process for biomedical application International conference

    Anyarat Watthanaphanit and Nagahiro Saito

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    Event date: 2014.6

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  203. Solution plasma process and its applications in biomedicine International conference

    Anyarat Watthanaphanit and Nagahiro Saito

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    Event date: 2014.6

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  204. ソリューションプラズマ分子技術

    上野智永, 齋藤永宏

    日本材料科学会 平成26年度学術講演大会 

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    Event date: 2014.6

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:工学院大学 新宿キャンパス   Country:Japan  

  205. ソリューションンプラズマプロセスを用いたAu超微粒子合成

    油家大輝, 許 容康, 木口崇彦, 齋藤永宏

    日本材料科学会 平成26年度学術講演大会 

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    Event date: 2014.6

    Language:Japanese   Presentation type:Poster presentation  

    Venue:工学院大学 新宿キャンパス   Country:Japan  

  206. 非水系リチウム空気電池における多孔質カーボン電極の孔構造分析

    森下翔平,Li Oi Lun Helena,齋藤永宏

    日本材料科学会 平成26年度学術講演大会 

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    Event date: 2014.6

    Language:Japanese   Presentation type:Poster presentation  

    Venue:工学院大学 新宿キャンパス   Country:Japan  

  207. マイクロ波プラズマCVD法による窒化炭素膜合

    伊澤昂汰, 木口崇彦, 齋藤永宏

    日本材料科学会 平成26年度学術講演大会 

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    Event date: 2014.6

    Language:Japanese   Presentation type:Poster presentation  

    Venue:工学院大学 新宿キャンパス   Country:Japan  

  208. ソリューションプラズマによる炭化水素化合物を溶媒としたカーボン合成速度の解析

    吉田彰仁, 上野智永, 齋藤永宏

    日本材料科学会 平成26年度学術講演大会 

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    Event date: 2014.6

    Language:Japanese   Presentation type:Poster presentation  

    Venue:工学院大学 新宿キャンパス   Country:Japan  

  209. ソリューションプラズマによる導電性カーボンナノ粒子材料の合成

    林 宏樹, O. L. Li, 齋藤永宏

    日本材料科学会 平成26年度学術講演大会 

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    Event date: 2014.6

    Language:Japanese   Presentation type:Poster presentation  

    Venue:工学院大学 新宿キャンパス   Country:Japan  

  210. プローブによるソリューションプラズマの解析

    木口崇彦, 油家大輝, 齋藤永宏

    日本材料科学会 平成26年度学術講演大会プログラム 

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    Event date: 2014.6

    Language:Japanese   Presentation type:Poster presentation  

    Venue:工学院大学 新宿キャンパス   Country:Japan  

  211. ソリューションプラズマ分子技術

    齋藤永宏

    日本材料科学会主催 平成26年度学術講演大会 

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    Event date: 2014.6

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:工学院大学(新宿キャンパス)   Country:Japan  

  212. Advanced Functional Materials Synthesized by Solution Plasma Process

    The 2nd International Symposium on Highly-Controlled Nano- and Micro-Scale Functional Suraface Structures for Frontier Smart Materials 2014 

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    Event date: 2014.5

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  213. Conversion of cellulose to sugar alcohol by solution plasma processing International conference

    Anyarat Watthanaphanit, Hoonseung Lee, and Nagahiro Saito

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    Event date: 2014.4

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Thailand  

  214. 正極材にカーボンナノボールを用いたリチウム空気電池の放電容量と反応生成物の評価

    森下翔平,O. L. Li,齋藤永宏

    電気化学会第81回大会 

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    Event date: 2014.3

    Language:Japanese   Presentation type:Poster presentation  

    Venue:関西大学千里山キャンパス   Country:Japan  

  215. Catalytic Activity and Durability for Oxygen Reduction Reaction of Hetero-atom doped Carbon

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    Event date: 2014.3

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  216. Cellulose/Graphene Beads as Anode Material for Lithium Batteries

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    Event date: 2014.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  217. ソリューションプラズマ反応場におけるヘテロカーボン生成機構の解明

    簾智仁, 上野智永, 齋藤永宏

    日本化学会第94春季年会 

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    Event date: 2014.3

    Language:Japanese   Presentation type:Poster presentation  

    Venue:名古屋大学 東山キャンパス   Country:Japan  

  218. ハロゲン系化合物を原料にしたソリューションプラズマによる導電性炭素材料の合成

    林宏樹,O. L. Li,齋藤永宏

    日本化学会第94春季年会 

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    Event date: 2014.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋大学 東山キャンパス   Country:Japan  

  219. ソリューションプラズマによる窒素含有カーボンの合成と窒素配置の計測

    玄光龍, 上野智永,齋藤永宏

    日本化学会第94春季年会 

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    Event date: 2014.3

    Language:Japanese   Presentation type:Poster presentation  

    Venue:名古屋大学 東山キャンパス   Country:Japan  

  220. デュアルマイクロ波プラズマ源CVDを用いた窒化炭素膜の合成

    木口崇彦,猪飼治,齋藤永宏

    資源・素材学会平成26年度春季大会 

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    Event date: 2014.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京大学生産技術研究所   Country:Japan  

  221. ソリューションプラズマによるカーボンナノチューブ表面の化学修飾と分散性の向上

    原田大,上野智永,齋藤永宏

    資源・素材学会平成26年度春季大会 

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    Event date: 2014.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京大学生産技術研究所   Country:Japan  

  222. ソリューションプラズマプロセスによる金シングルナノ粒子合成

    油家大輝,許容康,木口崇彦,齋藤永宏

    日本金属学会2014年春期(第154回)講演大会 

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    Event date: 2014.3

    Language:Japanese   Presentation type:Poster presentation  

    Venue:東京工業大学大岡山キャンパス   Country:Japan  

  223. Synthesis of Cellulose/Graphene Composites by Modified Marcano's Method

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    Event date: 2014.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  224. Solution Plasma Synthesis Process of Tungsten Carbide on N-doped Carbon Nanocomposite with Enhancing Catalytic ORR Activity and Durability

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    Event date: 2014.3

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  225. リチウム空気電池のCu-Fe触媒担持カーボン電極材料の合成と評価

    高橋亮,O. L. Li,齋藤永宏

    日本金属学会2014年春期(第154回)講演大会 

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    Event date: 2014.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学大岡山キャンパス   Country:Japan  

  226. デュアルマイクロ波プラズマ源CVDを用いた窒化炭素膜の合成

    木口崇彦,猪飼治,齋藤永宏

    第61回応用物理学会春季学術講演会 

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    Event date: 2014.3

    Language:Japanese   Presentation type:Poster presentation  

    Venue:青山学院大学相模原キャンパス   Country:Japan  

  227. ソリューションプラズマによる金ナノ粒子生成機構の解析:水-エタノール混合溶媒効果

    簾智仁, 上野智永, 齋藤永宏

    第61回応用物理学会春季学術講演会 

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    Event date: 2014.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:青山学院大学相模原キャンパス   Country:Japan  

  228. ソリューションプラズマによるカーボン系触媒の合成

    上野智永

    グラフェンを「作る・測る・使う」技術開発の将来 

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    Event date: 2014.3

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:岡山大学   Country:Japan  

  229. 窒素含有カーボン材料の合成に辺り、窒素量や窒素配置の制御

    玄光龍, 上野智永,齋藤永宏

    一般社団法人表面技術協会 第129回講演大会 

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    Event date: 2014.3

    Language:Japanese   Presentation type:Poster presentation  

    Venue:東京理科大学   Country:Japan  

  230. クモ膜下出血後の脳血管攣縮に対する新たな薬剤送達システムの構築 -薬剤含有生体吸収膜シートのプラズマ照射による薬剤放出制御の試み-

    入江恵子,青木淑恵,木口崇彦,Anyarat Watthanaphanit,齋藤永宏,廣瀬雄一

    STROKE2014 第30回スパズム・シンポジウム 

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    Event date: 2014.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:大阪国際会議場   Country:Japan  

  231. Application of the Electrical Probe Method for Solution Plasma Analysis International conference

    DAIKI ABURAYA, YONGKANG HEO, TAKAYOSHI KIGUCHI, NAGAHIRO SAITO

    6th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials / 7th International Conference on Plasma-Nano Technology & Science (ISPlasma 2014 / IC-PLANTS 2014) 

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    Event date: 2014.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  232. Solution Plasma Synthesis Process of Tungsten Carbide on N-doped Carbon Nanocomposite with Enhancing Catalytic ORR Activity and Durability International conference

    D.W. Kim, O.L.Li, P.Pootawang, N. Saito

    6th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials / 7th International Conference on Plasma-Nano Technology & Science (ISPlasma 2014 / IC-PLANTS 2014) 

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    Event date: 2014.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  233. Synthesis of Pt Nanoparticles Supported on CNTs by Solution Plasma Sputtering Processing International conference

    W. Yaowarat, O.L.Li, N. Saito

    6th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials / 7th International Conference on Plasma-Nano Technology & Science (ISPlasma 2014 / IC-PLANTS 2014) 

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    Event date: 2014.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  234. Development of the Graphite Structure of Solution Plasma Synthesized Carbon by Halogenated benzene derivatives International conference

    H.Hayashi, O.L.Li, N. Saito

    6th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials / 7th International Conference on Plasma-Nano Technology & Science (ISPlasma 2014 / IC-PLANTS 2014) 

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    Event date: 2014.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  235. Synthesis of Cu-Fe nanoparticles as Bi-functional Catalyst for Li-air battery International conference

    R. Takahashi, O.L.Li, N. Saito

    6th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials / 7th International Conference on Plasma-Nano Technology & Science (ISPlasma 2014 / IC-PLANTS 2014) 

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    Event date: 2014.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  236. Kinetics in Gold Nanoparticles Formation by Solution Plasma International conference

    T. Sudare, T. Ueno, N. Saito

    6th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials / 7th International Conference on Plasma-Nano Technology & Science (ISPlasma 2014 / IC-PLANTS 2014) 

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    Event date: 2014.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  237. Synthesis of ZnO Nanoparticle in Water by Solution Plasma Processing International conference

    Shimpei Nemoto, Sang-Yul Lee, Nagahiro Saito

    6th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials / 7th International Conference on Plasma-Nano Technology & Science (ISPlasma 2014 / IC-PLANTS 2014) 

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    Event date: 2014.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  238. ソリューションプラズマによる触媒ナノ材料の合成

    上野智永

    日本金属学会 触媒材料研究会 ミニシンポジウム「ナノ組織制御材料の新展開」 

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    Event date: 2014.2

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:NIMS, Tsukuba, Japan   Country:Japan  

  239. Depolymerization of Starch by Solution Plasma Process International conference

    Yukihiro Muta, Anyarat Watthanaphanit, Nagahiro Saito

    The 14th International Symposium on Biomimetic Materials Processing (BMMP-14) 

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    Event date: 2014.1

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  240. Charge Doping of Large-Area Graphene by Gold-Alloy Nanoparticles International conference

    M. A. Bratescu, N. Saito

    The 14th International Symposium on Biomimetic Materials Processing (BMMP-14) 

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    Event date: 2014.1

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  241. Evaluation of the discharge capacity and the reaction by-products of the Li-air battery using the spherical carbon nanoparticles as the cathode material International conference

    S. Morishita, O.L.Li, N. Saito

    The 14th International Symposium on Biomimetic Materials Processing (BMMP-14) 

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    Event date: 2014.1

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  242. Reactions of hydrocarbons in Solution Plasma International conference

    Akihito Yoshida, Tomonaga Ueno, Nagahiro Saito

    The 14th International Symposium on Biomimetic Materials Processing (BMMP-14) 

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    Event date: 2014.1

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  243. Solution Plasma Sputtering Process for the Production of Colloidal Gold Nanoparticles in Alginate Aqueous Solution International conference

    Anyarat Watthanaphanit, Gasidit Panomsuwan, Nagahiro Saito

    The 14th International Symposium on Biomimetic Materials Processing (BMMP-14) 

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    Event date: 2014.1

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  244. Solution Plasma Process: from the Fundamental to Applications International conference

    Anyarat Watthanaphanit, Nagahiro Saito

    The 8th Asia-Pacific International Symposium on the Basics and Applications of Plasma Technology (APSPT-8) 

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    Event date: 2013.12

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Taiwan, Province of China  

  245. Solution Plasma Process: From the Fundamental to its Application International conference

    O.L.Li and N. Saito

    The 8th Asia-Pacific International Symposium on the Basics and Applications of Plasma Technology (APSPT-8)  

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    Event date: 2013.12

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Taiwan, Province of China  

  246. The Surface Modification of CNT for High Dispersion in Water International conference

    T. Ueno, H. Harada, N. Saito

    International Union of Materials Research Society (IUMRS-ICA 2013) 

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    Event date: 2013.12

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:India  

  247. Study on Surface Modification Mechanism of the CNT by the Solution Plasma Treatment International conference

    Hiroshi Harada, Tomonaga Ueno , Nagahiro Saito

    International Symposium on EcoTopia Science 2013 - Innovation for Smart Sustainable Society 

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    Event date: 2013.12

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  248. Properties of Graphene Decorated with Alloy Nanoparticles for Energy Applications International conference

    M. A. Bratescu, N. Saito

    International Symposium on EcoTopia Science 2013 - Innovation for Smart Sustainable Society 

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    Event date: 2013.12

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  249. Synethesis of Carbon-Polymer Composite Material by Solution Plasma Processing International conference

    Y. Ichikawa, O. L. Li, N. Saito

    International Symposium on EcoTopia Science 2013 - Innovation for Smart Sustainable Society 

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    Event date: 2013.12

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  250. Structure Change of Solution Plasma Synthesized Carbon by Introducing Halogen Compounds International conference

    H. Hayashi, O. L. Li, N. Saito

    International Symposium on EcoTopia Science 2013 - Innovation for Smart Sustainable Society 

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    Event date: 2013.12

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  251. Synthesis of Cu-Fe as Bi-functional Catalyst with Carbon for the Application in Li-air battery International conference

    R. Takahashi, O. L. Li, N. Saito

    International Symposium on EcoTopia Science 2013 - Innovation for Smart Sustainable Society 

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    Event date: 2013.12

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  252. Analysis of the Activated Species for the Reaction of Solution Plasma in Water-Alcohol Mixture by Electron Spin Resonance International conference

    T. Sudare, T. Ueno, N. Saito

    International Symposium on EcoTopia Science 2013 - Innovation for Smart Sustainable Society 

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    Event date: 2013.12

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  253. An innovative measurement method for heat transfer performance of nanofluids by differential scanning calorimetry

    D. Aburaya, Y. K. Heo, T. Kiguchi, N. Saito

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    Event date: 2013.12

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  254. Effect of Surrounding on the Gold Nanoparticles Size for Biology Applications

    M. A. Bratescu, N. Saito

    The 23rd Annual Meeting of the Material Research Society of Japan 

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    Event date: 2013.12

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  255. Preparation of Silica Nanotubes using MWCNTs/CTAB as Templates

    W. Yaowarat, O.L.Li, N. Saito

    The 23rd Annual Meeting of the Material Research Society of Japan 

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    Event date: 2013.12

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  256. Improvement of the Dispersibility of CNT by Solution Plasma (SP)

    Hiroshi Harada, Tomonaga Ueno, Nagahiro Saito

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    Event date: 2013.12

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  257. Production of Highly Stable Gold Nanoparticles in Alginate Aqueous Suspension by Solution Plasma Sputtering Process

    Anyarat Watthanaphanit, Gasidit Panomsuwan, Nagahiro Saito

    The 23rd Annual Meeting of the Material Research Society of Japan 

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    Event date: 2013.12

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  258. Conversion of Guar Gum Biopolymer to Ethanol by Solution Plasma Process

    Shimpei Nemoto, Anyarat Watthanaphanit, Nagahiro Saito

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    Event date: 2013.12

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  259. Analysis of the Solution Plasma Reaction by Electrochemical Measurement

    Ryo Kato, Takayoshi Kiguchi, Nagahiro Saito

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    Event date: 2013.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  260. Superhydrophobic coating using atmospheric plasma chemical vapor deposition

    O. Ikai, Y. Heo, T. Kiguchi, N. Saito

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    Event date: 2013.12

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  261. UPSによる酸素還元活性を示す金属ナノ粒子の表面電子状態解析

    水下昌樹,上野智永,齋藤永宏

    平成25年度表面技術若手研究者・技術者研究交流発表会 

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    Event date: 2013.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋市工業研究所   Country:Japan  

  262. ソリューションプラズマによるカーボン-セルロース複合体の合成

    市川洋平,O. L. Li,齋藤永宏

    平成25年度表面技術若手研究者・技術者研究交流発表会 

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    Event date: 2013.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋市工業研究所   Country:Japan  

  263. ハロゲン化合物を用いたソリューションプラズマによる炭素材料の合成

    林宏樹,O. L. Li,齋藤永宏

    平成25年度表面技術若手研究者・技術者研究交流発表会 

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    Event date: 2013.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋市工業研究所   Country:Japan  

  264. ソリューションプラズマによるCu-Fe粒子担持カーボン材料の合成

    高橋亮,O. L. Li,齋藤永宏

    平成25年度表面技術若手研究者・技術者研究交流発表会 

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    Event date: 2013.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋市工業研究所   Country:Japan  

  265. 水-アルコール混合溶液中ソリューションプラズマに反応場における生成ラジカル種の解明

    簾智仁,上野智永,齋藤永宏

    平成25年度表面技術若手研究者・技術者研究交流発表会 

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    Event date: 2013.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋市工業研究所   Country:Japan  

  266. Depolymerization of Starch by Solution Plasma Process International conference

    Yukihiro Muta, Anyarat Watthanaphanit, Nagahiro Saito

    the 2nd Seminar on Future Vision of Green Mobility and Advance Technologies for Realizing the Vision 

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    Event date: 2013.12

    Language:English   Presentation type:Poster presentation  

    Country:Thailand  

  267. Development of the Graphitic Structure of Solution Plasma Synthesized Carbon by Halocarbon Solution International conference

    H. Hayashi, O. L. Li, N. Saito

    the 2nd Seminar on Future Vision of Green Mobility and Advance Technologies for Realizing the Vision 

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    Event date: 2013.12

    Language:English   Presentation type:Poster presentation  

    Country:Thailand  

  268. Chemical Modification of the Carbon Nanotubes by the Solution Plasma Processing International conference

    T. Ueno, H. Harada, N. Saito

    Materials Research Society (MRS) 

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    Event date: 2013.12

    Language:English   Presentation type:Poster presentation  

    Country:United States  

  269. Fabrication of silica nanotubes using multi-walled carbon nanotubes as template International conference

    W. Yaowarat,Oi Lun Li , Nagahiro Saito

    Materials Research Society (MRS) 

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    Event date: 2013.12

    Language:English   Presentation type:Poster presentation  

    Country:United States  

  270. Depolymerization of Sodium Alginate by Solution Plasma Process International conference

    Anyarat Watthanaphanit

    International Symposium on Materials Science and Surface Technology 2013 (MSST 2013) 

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    Event date: 2013.11

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  271. ソリューションプラズマ分子技術による電池材料の開発

    上野智永

    表面技術協会 関東支部・第86回講演会 

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    Event date: 2013.11

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:信州大学   Country:Japan  

  272. An innovative measurement method of heat transfer performance in nanofluids by differential scanning calorymetry International conference

    D. Aburaya, Y. K. Heo, T. Kiguchi, N. Saito

    Future Vision of Green Mobility and Advance Technologies for Realizing the Vision 

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    Event date: 2013.11

    Language:English   Presentation type:Poster presentation  

    Country:Viet Nam  

  273. Study on the effect of solution plasma characteristics on the synthesized materials International conference

    T. Kiguchi, Y. K. Heo, N. Saito

    Future Vision of Green Mobility and Advance Technologies for Realizing the Vision 

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    Event date: 2013.11

    Language:English   Presentation type:Poster presentation  

    Country:Viet Nam  

  274. Development of the analytic method for solution plasma by electrical probe International conference

    D. Aburaya, T. Kiguchi, N. Saito

    1st International Conference on Surface Engineering (ICSE2013) 

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    Event date: 2013.11

    Language:English   Presentation type:Poster presentation  

    Country:Korea, Republic of  

  275. Solution Plasma Materials Building and Modification International conference

    N. Saito

    1st International Conference on Surface Engineering (ICSE2013) 

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    Event date: 2013.11

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Korea, Republic of  

  276. Optical and Electrical Properties of Graphene Decorated with Nanoparticles for Energy Applications International conference

    M. A. Bratescu, N. Saito

    1st International Conference on Surface Engineering (ICSE2013) 

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    Event date: 2013.11

    Language:English   Presentation type:Oral presentation (general)  

    Country:Korea, Republic of  

  277. Synthesis of Structure-Controlled Carbon Nano Spheres by Solution Plasma Process by Organic Solution International conference

    O.L.Li, J.Kang, N. Saito

    1st International Conference on Surface Engineering (ICSE2013) 

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    Event date: 2013.11

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Korea, Republic of  

  278. Catalytic Activity for Oxygen Reduction Reaction of Nitrogen and Boron Doped Mesoporous Carbon International conference

    Dae-Wook Kim, ,Oi Lun Li , Nagahiro Saito

    1st International Conference on Surface Engineering (ICSE2013) 

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    Event date: 2013.11

    Language:English   Presentation type:Poster presentation  

    Country:Korea, Republic of  

  279. Characterization of Micro Crystalline Cellulose on the surface of Graphene/Graphene Oxide Sheets by Thermal Exfoliation Method International conference

    G. A. Akceoglu, Oi Lun LI and Nagahiro Saito

    1st International Conference on Surface Engineering (ICSE2013) 

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    Event date: 2013.11

    Language:English   Presentation type:Poster presentation  

    Country:Korea, Republic of  

  280. Synthesis of Silica Nanotubes by Carbon Nanotubes/CTAB Templates International conference

    W. Yaowarat,Oi Lun Li , Nagahiro Saito

    1st International Conference on Surface Engineering (ICSE2013) 

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    Event date: 2013.11

    Language:English   Presentation type:Poster presentation  

    Country:Korea, Republic of  

  281. Development of the Graphite Structure of Solution Plasma Synthesized Carbon by Halocarbon Solution International conference

    Hiroki Hayashi, Oi Lun Li , Nagahiro Saito

    1st International Conference on Surface Engineering (ICSE2013) 

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    Event date: 2013.11

    Language:English   Presentation type:Poster presentation  

    Country:Korea, Republic of  

  282. Cu-Fe Bi-Functional Catalyst Synthesized by Solution Plasma for the Application in Li-air Battery International conference

    Ryo takahashi, Oi Lun Li , Nagahiro Saito

    1st International Conference on Surface Engineering (ICSE2013) 

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    Event date: 2013.11

    Language:English   Presentation type:Poster presentation  

    Country:Korea, Republic of  

  283. Solution Plasma Surface Modification of Nanocarbons for Nanocomposites International conference

    T. Ueno, H. Harada, N. Saito

    1st International Conference on Surface Engineering (ICSE2013) 

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    Event date: 2013.11

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Korea, Republic of  

  284. A DFT study on Mechanism of Oxygen Reduction Reaction on Metal Nanoclster International conference

    Tetsunori Morishita, Tomonaga Ueno, Nagahiro Saito

    1st International Conference on Surface Engineering (ICSE2013) 

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    Event date: 2013.11

    Language:English   Presentation type:Poster presentation  

    Country:Korea, Republic of  

  285. UPS probing onto the electronic structure of size-controlled metal nanoparticles International conference

    M. Mizushita, T. Ueno, N. Saito

    1st International Conference on Surface Engineering (ICSE2013) 

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    Event date: 2013.11

    Language:English   Presentation type:Poster presentation  

    Country:Korea, Republic of  

  286. Surface Modification Mechanism of the CNT by the Solution Plasma Treatment International conference

    Hiroshi Harada, Tomonaga Ueno , Nagahiro Saito

    1st International Conference on Surface Engineering (ICSE2013) 

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    Event date: 2013.11

    Language:English   Presentation type:Poster presentation  

    Country:Korea, Republic of  

  287. In-situ Preparation of Colloidal Gold Nanoparticles in Alginate Aqueous Solution by Solution Plasma Sputtering Process International conference

    Anyarat Watthanaphanit, Gasidit Panomsuwan, Nagahiro Saito

    1st International Conference on Surface Engineering (ICSE2013) 

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    Event date: 2013.11

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Korea, Republic of  

  288. Investigation of Effect of Solution Plasma to Guar Gum Solution International conference

    Shimpei Nemoto, Anyarat Watthanaphanit, Nagahiro Saito

    1st International Conference on Surface Engineering (ICSE2013) 

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    Event date: 2013.11

    Language:English   Presentation type:Oral presentation (general)  

    Country:Korea, Republic of  

  289. Study on the effect of solution plasma characteristics on the synthesized materials International conference

    T. Kiguchi, Y. K. Heo, N. Saito

    1st International Conference on Surface Engineering (ICSE2013) 

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    Event date: 2013.11

    Language:English   Presentation type:Oral presentation (general)  

    Country:Korea, Republic of  

  290. Selective Decomposition of Organic Materials by Solution Plasma Processing International conference

    Y. K. Heo, T. Kiguchi, N. Saito

    1st International Conference on Surface Engineering (ICSE2013) 

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    Event date: 2013.11

    Language:English   Presentation type:Poster presentation  

    Country:Korea, Republic of  

  291. Formation of Calcium Carbonate Films by Electrochemical Method : Controlled with Concentration of Mg2+ and Temperature International conference

    S. H. Lee, M. H. Lee, N. Saito

    1st International Conference on Surface Engineering (ICSE2013) 

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    Event date: 2013.11

    Language:English   Presentation type:Poster presentation  

    Country:Korea, Republic of  

  292. Synthesis of carbon nitride films by dual microwave plasma source CVD International conference

    O. Ikai, T. Kiguchi, M. A. Bratescu, N. Saito

    1st International Conference on Surface Engineering (ICSE2013) 

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    Event date: 2013.11

    Language:English   Presentation type:Poster presentation  

    Country:Korea, Republic of  

  293. Analysis of the Reduction Species and Metal Reduction Reaction in Solution Plasma International conference

    R. Kato, T. Kiguchi, N. Saito

    1st International Conference on Surface Engineering (ICSE2013) 

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    Event date: 2013.11

    Language:English   Presentation type:Poster presentation  

    Country:Korea, Republic of  

  294. 物理化学処理~液中プラズマの応用

    齋藤永宏

    第47回 化学工学の進歩講習会 

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    Event date: 2013.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名城大学名古屋駅サテライト   Country:Japan  

  295. Tailoring Size and Composition of nanoparticles Synthesized in Solution Plasma International conference

    M.A. Bratescu, T. Ueno, N. Saito

    The 5th International Symposium on Designing,Processing and Properties of Advanced Engineering Materials ISAEM-2012 and The 3rd International Symposium on Advanced Materials Development and Integration of Novel Structural Metallic and Inorganic Materials AMDI-3 

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    Event date: 2013.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  296. ソリューションプラズマの電気化学測定法による分析

    加藤諒

    第23回学生による材料フォーラム 

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    Event date: 2013.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:名古屋大学 アトリウム ホワイエ   Country:Japan  

  297. ソリューションプラズマによるカーボン-高分子複合体の合成

    市川洋平, Oi Lun Li, 齋藤永宏

    第23回学生による材料フォーラム 

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    Event date: 2013.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:名古屋大学 アトリウム ホワイエ   Country:Japan  

  298. デュアルマイクロ波プラズマ源CVDにより合成した窒化炭素膜の評価

    猪飼治

    第23回学生による材料フォーラム 

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    Event date: 2013.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:名古屋大学 アトリウム ホワイエ   Country:Japan  

  299. One-step Synthesis of Gold Bimetallic Nanoparticles with Various Metal Compositions International conference

    M. A. Bratescu, N. Saito

    American Vacuum Society, 60th International Symposium 

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    Event date: 2013.10 - 2013.11

    Language:English   Presentation type:Oral presentation (general)  

    Country:United States  

  300. Effect of Solution Plasma Treatment on Chemical Properties of Guar Gum International conference

    Shimpei Nemoto, Anyarat Watthanaphanit, Nagahiro Saito

    The 4th Asian Symposium on Advanced Materials -Chemistry, Physics & Biomedicine of Functional and Novel Materials 

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    Event date: 2013.10

    Language:English   Presentation type:Poster presentation  

    Country:Taiwan, Province of China  

  301. One-Step Production of Colloidal Gold Nanoparticles in Alginate Aqueous Solution International conference

    Anyarat Watthanaphanit, Gasidit Panomsuwan, Nagahiro Saito

    The 4th Asian Symposium on Advanced Materials- Chemistry, Physics & Biomedicine of Functional and Novel Materials 

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    Event date: 2013.10

    Language:English   Presentation type:Oral presentation (general)  

    Country:Taiwan, Province of China  

  302. Introduction of Sulfated Groups to Calcium Alginate Beads Surface by Solution Plasma Process International conference

    Yoshie Aoki, Anyarat Watthanaphanit, Nagahiro Saito

    The 4th Asian Symposium on Advanced Materials -Chemistry, Physics & Biomedicine of Functional and Novel Materials 

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    Event date: 2013.10

    Language:English   Presentation type:Oral presentation (general)  

    Country:Taiwan, Province of China  

  303. ハロゲン化合物添加有機溶媒系からのソリューションプラズマによる炭素材料の合成

    林宏樹, Helena Oi Lun Li, 齋藤永宏

    2013年電気化学秋季大会 

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    Event date: 2013.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学大岡山キャンパス   Country:Japan  

  304. リチウム空気電池のCu-Fe触媒担持カーボン電極材料の作製

    高橋亮, Oi Lun Li Helena, 齋藤永宏

    2013年電気化学秋季大会 

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    Event date: 2013.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京工業大学大岡山キャンパス   Country:Japan  

  305. デュアルマイクロ波プラズマ源CVDにより作製した窒化炭素膜の評価

    猪飼治,木口崇彦,Maria-Antoaneta Bratescu,齋藤永宏

    第128回表面技術協会 

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    Event date: 2013.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:福岡工業大学   Country:Japan  

  306. ソリューションプラズマによるグラファイト電極からのグラフェンの剝離

    上野智永,李 熏聲,齋藤永宏

    第128回表面技術協会 

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    Event date: 2013.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:福岡工業大学   Country:Japan  

  307. 密度汎関数法による金属ナノクラスター表面上酸素還元反応機構の解析

    森下哲典, 上野智永, 齋藤永宏

    第128回表面技術協会 

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    Event date: 2013.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:福岡工業大学   Country:Japan  

  308. 紫外光電子分光法による金属ナノ粒子の電子状態とその粒径依存性

    水下昌樹,上野智永,齋藤永宏

    第128回表面技術協会 

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    Event date: 2013.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:福岡工業大学   Country:Japan  

  309. DSCによるナノ流体の熱伝達性能評価

    油家大輝,木口崇彦,齋藤永宏

    日本金属学会2013年秋期(第153回)講演大会 

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    Event date: 2013.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:金沢大学角間キャンパス   Country:Japan  

  310. ソリューションプラズマによるCuFe担持カーボン電極材料の作製

    高橋亮, Oi Lun Li Helena, 齋藤永宏

    日本金属学会2013年秋期(第153回)講演大会 

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    Event date: 2013.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:金沢大学角間キャンパス   Country:Japan  

  311. ハロゲン化合物を用いたソリューションプラズマによる炭素材料の合成

    林宏樹, Helena Oi Lun Li, 齋藤永宏

    日本金属学会2013年秋期(第153回)講演大会 

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    Event date: 2013.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:金沢大学角間キャンパス   Country:Japan  

  312. ソリューションプラズマによる金属ナノ粒子の合成に及ぼす溶媒の影響

    上野智永,簾智仁,齋藤永宏

    日本金属学会2013年秋期(第153回)講演大会 

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    Event date: 2013.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:金沢大学角間キャンパス   Country:Japan  

  313. 分子軌道法計算による金属ナノクラスターの構造安定性と反応性に関する解析

    森下哲典, 上野智永, 齋藤永宏

    日本金属学会2013年秋期(第153回)講演大会 

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    Event date: 2013.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:金沢大学角間キャンパス   Country:Japan  

  314. ソリューションプラズマを用いた金属の還元および還元種の解析

    加藤諒,木口崇彦,齋藤永宏

    第74回応用物理学会秋季学術講演会 

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    Event date: 2013.9

    Language:Japanese   Presentation type:Poster presentation  

    Venue:同志社大学京田辺キャンパス   Country:Japan  

  315. 回路構造を利用したソリューションプラズマの特性制御

    Heo Yongkang,木口崇彦,齋藤永宏

    第74回応用物理学会秋季学術講演会 

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    Event date: 2013.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:同志社大学京田辺キャンパス   Country:Japan  

  316. 電極間距離の自動制御によるソリューションプラズマ反応場の精密測定

    木口崇彦,許容康,齋藤永宏

    第74回応用物理学会秋季学術講演会 

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    Event date: 2013.9

    Language:Japanese   Presentation type:Poster presentation  

    Venue:同志社大学京田辺キャンパス   Country:Japan  

  317. デュアルマイクロ波プラズマ源CVDを用いた窒化炭素膜の合成

    猪飼治,木口崇彦,Maria Bratescu,齋藤永宏

    第74回応用物理学会秋季学術講演会 

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    Event date: 2013.9

    Language:Japanese   Presentation type:Poster presentation  

    Venue:同志社大学京田辺キャンパス   Country:Japan  

  318. 電子スピン共鳴法を用いた水−アルコール混合溶液中ソリューションプラズマ反応場の活性種の解明

    簾智仁,上野智永,齋藤永宏

    第74回応用物理学会秋季学術講演会 

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    Event date: 2013.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:同志社大学京田辺キャンパス   Country:Japan  

  319. Controlling Oxidation level of Graphene/Graphene Oxide by Solution Plasma from the Exfoliation of Graphite Oxide

    G. A. Akceoglu, Oi Lun LI, Nagahiro Saito

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    Event date: 2013.9

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  320. ソリューションプラズマによるセルロース分解条件の探求と分解物の化学分析

    根本心平、Anyarat Watthanaphanit、齋藤永宏

    第62回高分子討論会 

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    Event date: 2013.9

    Language:Japanese   Presentation type:Poster presentation  

    Venue:金沢大学角間キャンパス   Country:Japan  

  321. ソリューションプラズマプロセッシングによるアルギン酸塩のスルホ化

    青木淑恵、Anyarat Watthanaphanit、齋藤永宏

    第62回高分子討論会 

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    Event date: 2013.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:金沢大学角間キャンパス   Country:Japan  

  322. A Novel Synthesis Technology of Size-Controllable Nano Metal

    O.L.Li, N. Saito

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    Event date: 2013.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  323. アミノカプロン酸溶液中ソリューションプラズマによるカーボンナノチューブ表面修飾機構

    原田大、上野智永、齋藤永宏

    平成25年度 資源・素材関係学協会合同秋季大会 

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    Event date: 2013.9

    Language:Japanese   Presentation type:Poster presentation  

    Venue:北海道大学   Country:Japan  

  324. Solution Plasma for Molecular Technology -Plasma for Chemist- International conference

    N. Saito

    The 9th Asian-European International Conference on Plasma Surface Engineering 

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    Event date: 2013.8

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  325. An Innovative Measurement Method of Heat Transfer Performance in Nanofluids by Differential Scanning Calorymetry International conference

    D. Aburaya, T. Kiguchi, N. Saito

    The 9th Asian-European International Conference on Plasma Surface Engineering 

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    Event date: 2013.8

    Language:English   Presentation type:Poster presentation  

    Country:Korea, Republic of  

  326. The Effects of the Various Plasma Density and Temperature on the Characteristics of Gold Nanoparticles Synthesized International conference

    Y. K. Heo, T. Kiguchi, N. Saito

    The 9th Asian-European International Conference on Plasma Surface Engineering 

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    Event date: 2013.8

    Language:English   Presentation type:Poster presentation  

    Country:Korea, Republic of  

  327. Analaysis of Carbon Nitride Films Synthesized by Dual Microwave Plasma International conference

    T. Kiguchi, O. Ikai, N. Saito

    The 9th Asian-European International Conference on Plasma Surface Engineering 

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    Event date: 2013.8

    Language:English   Presentation type:Poster presentation  

    Country:Korea, Republic of  

  328. 水中で発生させたプラズマを用いたアルギン酸カルシウムビーズの機能化

    青木淑恵、Anyarat Watthanaphanit、齋藤永宏

    名古屋大学若手女性研究者サイエンスフォーラム 

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    Event date: 2013.8

    Language:Japanese   Presentation type:Poster presentation  

    Venue:名古屋大学   Country:Japan  

  329. One-Step Synthesis of Gold Bimetallic Nanoparticles in Solution Plasma International conference

    M. A. Bratescu, O. Takai, N. Saito

    21st International Symposium on Plasma Chemistry, ISPC21 - 2013, 

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    Event date: 2013.8

    Language:English   Presentation type:Poster presentation  

    Country:Australia  

  330. 水がコロコロころがる表面  -超はっ水ー

    齋藤永宏

    市民講座 やさしい表面科学 「水」の科学 

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    Event date: 2013.7

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:名古屋大学   Country:Japan  

  331. Solution plasma process ~ New chemical reaction field International conference

    Nagahiro Saito

    The 12th International Symposium on Sputtering & Plasma Process 

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    Event date: 2013.7

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  332. Synthesis of Structure-Controlled Carbon Nano Spheres by Solution Plasma Process under Benzene International conference

    O.L.Li, J. Kang, N. Saito

    Joint Symposiium on Plasma and Electrostatics Technologies for Environmental Applications. 

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    Event date: 2013.5

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  333. One-Step Synthesis of Gold Nanoparticles Stabilized in Alginate Gel Matrix using Solution Sputtering Process International conference

    Anyarat Watthanaphanit, Gasidit Panomsuwan, Nagahiro Saito

    The 4th ResearchSymposium on Petrochemical and materials Technology and the 19th PPC Symposium on Petroleum, Petrochemicals, and Polymers 2013 

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    Event date: 2013.4

    Language:English   Presentation type:Oral presentation (general)  

    Country:Thailand  

  334. One-Step Synthesis of Magnetic Metal Nanoparticles Supported on Spherical Carbon by Solution Plasma Process International conference

    O.L.Li, R. Takahashi, N. Saito

    The 4th ResearchSymposium on Petrochemical and materials Technology and the 19th PPC Symposium on Petroleum, Petrochemicals, and Polymers 2013 

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    Event date: 2013.4

    Language:English   Presentation type:Poster presentation  

    Country:Thailand  

  335. In situ Preparation of Gold Nanoparticles in Alginate Gel Matrix by Solution Plasma Sputtering Process International conference

    Anyarat Watthanaphanit, Gasidit Panomsuwan, Nagahiro Saito

    2013 MRS Spring Meeting & Exibits 

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    Event date: 2013.4

    Language:English   Presentation type:Oral presentation (general)  

    Country:United States  

  336. The effect of water-alcohol mixture solution on the synthesis of gold nano particle by solution plasma International conference

    Tomohito Sudare, Tomonaga Ueno, Nagahiro Saito

    2013 MRS Spring Meeting & Exibits 

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    Event date: 2013.4

    Language:English   Presentation type:Poster presentation  

    Country:United States  

  337. First principle calculation of oxygen reduction reaction on metal nanoclusters International conference

    T. Morishita, T. Ueno, N. Saito

    2013 MRS Spring Meeting & Exibits 

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    Event date: 2013.4

    Language:English   Presentation type:Poster presentation  

    Country:United States  

  338. ソリューションプラズマによる電極上での物理的・化学的反応の解析

    Y. K. Heo,Maria-Antoaneta Bratescu,齋藤永宏

    第60回応用物理学会春期学術講演会 

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    Event date: 2013.3

    Language:Japanese   Presentation type:Poster presentation  

    Venue:神奈川工科大学   Country:Japan  

  339. 次世代触媒・電池の開発

    齋藤永宏

    第10回次世代自動車公開シンポジウム「モビリティ・イノベーション」 

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    Event date: 2013.3

    Language:Japanese   Presentation type:Symposium, workshop panel (nominated)  

    Venue:名古屋大学   Country:Japan  

  340. Structural Properties of Nanocarbon Materials by Solution Plasma in Water

    李 熏聲,Maria-Antoaneta Bratescu,齋藤永宏

    表面技術協会 第127回講演大会 

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    Event date: 2013.3

    Language:Japanese   Presentation type:Poster presentation  

    Venue:日本工業大学   Country:Japan  

  341. デュアルマイクロ波プラズマ源CVD による窒化炭素膜の作製と評価

    猪飼 治,Y. Heo,M. A. Bratescu,齋藤永宏

    表面技術協会 第127回講演大会 

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    Event date: 2013.3

    Language:Japanese   Presentation type:Poster presentation  

    Venue:日本工業大学   Country:Japan  

  342. 「超はっ水」のふしぎ~はすの葉のように水玉コロコロ

    齋藤永宏

    文化フォーラム・名古屋「可視化が拓く科学の世界(ふしぎな現象を見てみよう)」 

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    Event date: 2013.3

    Language:Japanese   Presentation type:Symposium, workshop panel (nominated)  

    Venue:名古屋大学   Country:Japan  

  343. A Correlation Study of the Factors which Affect Nanoparticles Synthesis in Solution Plasma International conference

    Y. K. Heo, M. A.Bratescu, N. Saito

    1st International Workshop on Solution Plasma and Moleculer Technologies(SPM-1) 

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    Event date: 2013.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  344. Tailoring Size and Composition of Nanoparticles Synthesized in Solution Plasma International conference

    M. A. Bratescu, O. Takai, N. Saito

    1st International Workshop on Solution Plasma and Moleculer Technologies(SPM-1) 

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    Event date: 2013.3

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  345. Solution Plasma Processing and its Applications International conference

    N. Saito

    1st International Workshop on Solution Plasma and Moleculer Technologies(SPM-1) 

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    Event date: 2013.3

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  346. Highly Efficient Visible Light Driven Photocatalytic Activity of Black TiO2 x Nano Microspheres Synthesized by Solution Plasma Process International conference

    G. Panomsuwan, N. Saito

    1st International Workshop on Solution Plasma and Moleculer Technologies(SPM1) 

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    Event date: 2013.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  347. Formation of Silver Nanoparticles in Nanochannels of Mesoporous Silica via Solution Plasma Processing International conference

    W. Yaowarat, P. Pootawang, N. Saito

    1st International Workshop on Solution Plasma and Moleculer Technologies(SPM-1) 

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    Event date: 2013.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  348. Catalytic Activity for Oxygen Reduction of Iron Compound with Carbon Nanoparticles Synthesized by Solution Plasma Process International conference

    D. Kim, P. Pootawang, N. Saito

    1st International Workshop on Solution Plasma and Moleculer Technologies(SPM-1) 

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    Event date: 2013.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  349. Production Improvement of Graphene Oxide Sheets using Solution Plasma Processing and their Modification for ORR Catalytic Activity International conference

    G. A. Akceoglu, P. Pootawang, N. Saito

    1st International Workshop on Solution Plasma and Moleculer Technologies(SPM-1) 

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    Event date: 2013.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  350. Diagnosis of Solution Plasma by the Probe Method International conference

    Y. Ichikawa, M. Bratescu, Y. K. Heo, N. Saito

    1st International Workshop on Solution Plasma and Moleculer Technologies(SPM-1) 

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    Event date: 2013.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  351. Optical Diagnostic of Solution Plasma by Broadband Absorption Spectroscopy International conference

    H. Harada, M. A. Bratescu, Y. K. Heo, N. Saito

    1st International Workshop on Solution Plasma and Moleculer Technologies(SPM-1) 

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    Event date: 2013.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  352. Synthesis of Graphene Forms and Carbon Onions by Solution Plasma in Water International conference

    H. S. Lee, M. A. Bratescu, N. Saito

    1st International Workshop on Solution Plasma and Moleculer Technologies(SPM-1) 

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    Event date: 2013.3

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  353. Catalytic activity for oxgen reduction reaction 3rd transition metal/carbon catalysts International conference

    D. Kim, P. Pootawang, N. Saito

    The 6th International Conference on PLAsma Nanotechnology & Science(IC-PLANTS2013) 

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    Event date: 2013.2

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  354. Nanocarbon production by solution plasma process in water International conference

    H. Lee, M. A. Bratescu, N. Saito

    The 6th International Conference on PLAsma Nanotechnology & Science(IC-PLANTS2013) 

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    Event date: 2013.2

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  355. Incoporation of silver nanoparticle within mesoporous silica by using solution plasma processing International conference

    W. Yaowarat, P. Pootawang, N. Saito

    The 6th International Conference on PLAsma Nanotechnology & Science(IC-PLANTS2013) 

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    Event date: 2013.2

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  356. Diagnosis of Solution Plasma by the Electrical Probe Method International conference

    Y. Ichikawa, M. A. Bratescu, N. Saito

    5th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials(ISPlasma2013) 

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    Event date: 2013.1 - 2013.2

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  357. Consideration of Solution Plasma Process Conditions for Cellulose Degradation International conference

    S. Nemoto, A. Watthanaphanit, N. Saito

    5th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials(ISPlasma2013) 

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    Event date: 2013.1 - 2013.2

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  358. Utilization of the Solution Plasma Process for the Production of Low Molecular Weight Alginate with Narrow Molecular Weight Distribution International conference

    A. Watthanaphanit, N. Saito

    5th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials(ISPlasma2013) 

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    Event date: 2013.1 - 2013.2

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  359. Enhancement of sol-gel reaction in catalyst-free mesoporous silica synthesis by solution plasma International conference

    P. Pootawang, N. Saito

    5th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials(ISPlasma2013) 

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    Event date: 2013.1 - 2013.2

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  360. Analysis of Carbon Nitride Films Synthesized by Dual Microwave Plasma Source CVD International conference

    O. Ikai, Y. K. Heo, M. A. Bratescu, N. Saito

    5th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials(ISPlasma2013) 

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    Event date: 2013.1 - 2013.2

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  361. Catalytic activity for oxgen reduction reaction of tungsten carbide/carbon catalysts International conference

    Dae-Wook Kim, P. Pootawang, N. Saito

    5th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials(ISPlasma2013) 

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    Event date: 2013.1 - 2013.2

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  362. Production Improvement of Graphene Oxide Sheets Using Solution Plasma Processing and Their Modifilcation for ORR Catalytic Activity International conference

    G. A. Akceogle, P. Pootawang, N. Saito

    5th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials(ISPlasma2013) 

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    Event date: 2013.1 - 2013.2

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  363. Synthesis of Silver Nanoparticle within Mesoporous Silica by Using Solution Plasma Processing International conference

    W. Yaowarat, P. Pootawang, N. Saito

    5th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials(ISPlasma2013) 

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    Event date: 2013.1 - 2013.2

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  364. Themostability of Nanofluids in Heat Transfer System International conference

    Y. K. Heo, M. A. Bratescu, N. Saito

    5th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials(ISPlasma2013) 

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    Event date: 2013.1 - 2013.2

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  365. Preparation and Evaluation of the thermal properties of Au nanofluids International conference

    R. Kato, Y. K. Heo, A. Wathanapahanit, N. Saito

    5th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials(ISPlasma2013) 

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    Event date: 2013.1 - 2013.2

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  366. Graphene Decorated with Gold Bimetallic Nanocrystals in Solution Plasma International conference

    M.A. Bratescu, O. Takai, N. Saito

    5th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials(ISPlasma2013) 

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    Event date: 2013.1 - 2013.2

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  367. Oxygen Reduction Analysis on Metal Nanocluster by First-principle Calculation International conference

    T. Morishita, T. Ueno, N. Saito

    5th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials(ISPlasma2013) 

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    Event date: 2013.1 - 2013.2

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  368. Synthesis of Graphene Oxide by Using Solution Plasma Process in Water International conference

    H. S. Lee, M. A. Bratescu, N. Saito

    The 13th International Symposium on Biomimetic Materials Processing(BMMP-13) 

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    Event date: 2013.1

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  369. Solution Plasma Synthesis of Black TiO2-x Nano/Microspheres with Enhanced Visible-Light Photocatalytic Activity International conference

    G. Panomsuwan, N. Saito

    The 13th International Symposium on Biomimetic Materials Processing(BMMP-13) 

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    Event date: 2013.1

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  370. Synthesis of Silver Nanoparticle within Mesoporous Silica by Using Solution Plasma Processing International conference

    W. Yaowarat, P. Pootawang, N. Saito

    The 13th International Symposium on Biomimetic Materials Processing(BMMP-13) 

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    Event date: 2013.1

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  371. Electrocatalytic Activity for Oxygen Reduction of Transition Metal/Carbon Catalysts Synthesized by Solution Plasma Process International conference

    D. Kim, P. Pootawang, N. Saito

    The 13th International Symposium on Biomimetic Materials Processing(BMMP-13) 

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    Event date: 2013.1

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  372. Modification of Graphene Oxide Sheets for ORR Catalytic Activity by Using Solution Plasma Processing International conference

    G. A. Akceoglu, P. Pootawang, N. Saito

    The 13th International Symposium on Biomimetic Materials Processing(BMMP-13) 

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    Event date: 2013.1

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  373. Analysis of Carbon Nitride Films Synthesized by Dual Microwave Plasma Source CVD International conference

    O. Ikai, M. Bratescu, N. Saito

    The 13th International Symposium on Biomimetic Materials Processing(BMMP-13) 

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    Event date: 2013.1

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  374. Synthesis and Evaluation of Gold Nanofluids for the Improvement of Heat Transfer International conference

    R. Kato, Y. K. Heo, N. Saito

    The 13th International Symposium on Biomimetic Materials Processing(BMMP-13) 

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    Event date: 2013.1

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  375. Diagnosis of Solution Plasma by the Electrical Probe Method International conference

    Y. Ichikawa, Y. K. Heo, M. A. Bratescu, N. Saito

    The 13th International Symposium on Biomimetic Materials Processing(BMMP-13) 

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    Event date: 2013.1

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  376. Oxygen Reduction Analysis on Metal Nanocluster by First-principle Calculation International conference

    T. Morishita, T. Ueno, N. Saito

    The 13th International Symposium on Biomimetic Materials Processing(BMMP-13) 

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    Event date: 2013.1

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  377. An Alternative Oxygen Reaction Electrocatalyst for Polyelectrolyte Membrane Fuel International conference

    P. Pootawang

    ICEAN 2012 

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    Event date: 2012.12

    Language:English   Presentation type:Oral presentation (general)  

    Country:Austria  

  378. 固体電解質の電子状態制御

    澤 昂平,Maria-Antoaneta Bratescu,齋藤永宏

    平成24年度表面技術若手研究者・技術者研究交流発表会 

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    Event date: 2012.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋市工業研究所   Country:Japan  

  379. 酸素ドープ窒化インジウム薄膜のバンドギャップエネルギー制御

    大野一佳,Maria-Antoaneta Bratescu,齋藤永宏

    平成24年度表面技術若手研究者・技術者研究交流発表会 

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    Event date: 2012.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋市工業研究所   Country:Japan  

  380. ソリューションプラズマによるFe-N系カーボン触媒材料の合成と評価

    谷田優也,P. Panuphong,齋藤永宏

    平成24年度表面技術若手研究者・技術者研究交流発表会 

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    Event date: 2012.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋市工業研究所   Country:Japan  

  381. Graphene Decorated with Metal Nanoparticles using Solution Plasma Processing International conference

    M.A. Bratescu, T. Ueno, O. Takai, N. Saito

    2012 MRS Fall Meeting 

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    Event date: 2012.12

    Language:English   Presentation type:Poster presentation  

    Country:United States  

  382. 次世代電池正極材料の開発

    齋藤永宏

    第7回グリーンモビリティ連携研究センター公開シンポジウム「次世代電池技術の可能性と未来」 

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    Event date: 2012.11

    Language:Japanese   Presentation type:Symposium, workshop panel (nominated)  

    Venue:ポートメッセ名古屋   Country:Japan  

  383. ナノ流体の熱伝導率における粒子形状が及ぼす影響

    加藤諒, 許容康、アンヤラット・ワタナファニット, 齋藤永宏

    第22回学生による材料フォーラム 

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    Event date: 2012.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:豊橋サイエンスコア   Country:Japan  

  384. ラングミュアプローブによるソリューションプラズマの計測

    市川 洋平, Maria-Antoaneta Bratescu,齋藤永宏

    第22回学生による材料フォーラム 

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    Event date: 2012.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:豊橋サイエンスコア   Country:Japan  

  385. ソリューションプラズマプロセスを用いたセルロース分解機構の解明

    根本心平, アンヤラットワタナファニット, 齋藤永宏

    第22回学生による材料フォーラム 

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    Event date: 2012.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:豊橋サイエンスコア   Country:Japan  

  386. デュアルマイクロ波プラズマ源CVDによる窒化炭素膜の作製と評価

    猪飼治, Maria-Antoaneta Bratescu,齋藤永宏

    第22回学生による材料フォーラム 

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    Event date: 2012.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:豊橋サイエンスコア   Country:Japan  

  387. 金属ナノクラスター表面における酸素還元反応の論理的解析

    森下哲典, 上野智永, 齋藤永宏

    第22回学生による材料フォーラム 

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    Event date: 2012.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:豊橋サイエンスコア   Country:Japan  

  388. Evaluation of convective heat transfer coefficient of static condition fluids using differential scanning calorimeter International conference

    Y.K. Heo, M.A. Bratescu, N. Saito

    ISAWST1 First International Symposium on Advanced Water Science and Technology 

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    Event date: 2012.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  389. Utilization of the solution plasma process for the production of low molecular weight alginate with narrow molecular weight distribution International conference

    A. Watthanaphanit, N. Saito

    ISAWST1 First International Symposium on Advanced Water Science and Technology 

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    Event date: 2012.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  390. Preparation and evaluation of gold with difference particle shapes and sizes International conference

    R. Kato, Y.K. Heo, A. Watthanaphanit, N. Saito

    ISAWST1 First International Symposium on Advanced Water Science and Technology 

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    Event date: 2012.11

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  391. Hydroxyl-Rich Mesoporous Silica Synthesized Using Solution Plasma for Thin-Layer Carbon Coating International conference

    P. Pootawang, N. Saito

    The 5th International Symposium on Designing,Processing and Properties of Advanced Engineering Materials ISAEM-2012 and The 3rd International Symposium on Advanced Materials Development and Integration of Novel Structural Metallic and Inorganic Materials AMDI-3 

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    Event date: 2012.11

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  392. Preparation of Metal Nanoparticles within Mesoporous Silica via Solution Plasma Process (SPP) International conference

    W. Yaowarat, N. Saito

    AVS 

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    Event date: 2012.10 - 2012.11

    Language:English   Presentation type:Oral presentation (general)  

    Country:United States  

  393. Synthesis of Gold Nanofluids for Improved Heat Transfer using Solution Plasma International conference

    Y.K. Heo, M.A. Bratescu, N. Saito

    AVS 

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    Event date: 2012.10 - 2012.11

    Language:English   Presentation type:Oral presentation (general)  

    Country:United States  

  394. Optical Properties and Surface radicals Interaction of Graphene Decorated with Bimetallic Nanocrystals International conference

    M.A. Bratescu, O.Takai, N. Saito

    AVS 

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    Event date: 2012.10 - 2012.11

    Language:English   Presentation type:Oral presentation (general)  

    Country:United States  

  395. Depolymerization of Natural Biopolymer by Solution Plasma Process International conference

    A. Watthanaphanit

    ICNP-2012 

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    Event date: 2012.10

    Language:English   Presentation type:Oral presentation (general)  

    Country:India  

  396. Structural elucidation of cellulose decomposition by solution plasma process International conference

    S. Nemoto

    ICNP-2012 

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    Event date: 2012.10

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:India  

  397. ソリューションプラズマによるFe-N系カーボン触媒材料の合成と評価

    谷田 優也,P. Pootawang,齋藤 永宏

    第4回マイクロ・ナノ工学シンポジウム 

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    Event date: 2012.10

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:北九州国際会議場   Country:Japan  

  398. 酸素ドープ窒化インジウム薄膜のバンドギャップエネルギーの制御

    大野 一佳,Maria-Antoaneta Bratescu,齋藤 永宏

    第4回マイクロ・ナノ工学シンポジウム 

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    Event date: 2012.10

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:北九州国際会議場   Country:Japan  

  399. リチウムイオン電導体の電子状態制御

    澤 昂平,Maria-Antoaneta Bratescu,齋藤 永宏

    第4回マイクロ・ナノ工学シンポジウム 

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    Event date: 2012.10

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:北九州国際会議場   Country:Japan  

  400. Utilization of the Solution Plasma Process for the Production of Low Molecular Weight Alginate with Narrow Molecular Weight Distribution International conference

    A. Watthanaphanit, N. Saito

    11th APCPST & 25th SPSM 

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    Event date: 2012.10

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  401. Graphene Decorated with Bimetallic nanocrystals for Enhanced Plasmonic Energy Conversion International conference

    M.A. Bratescu, T. Ueno, O. Takai, N. Saito

    11th APCPST & 25th SPSM 

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    Event date: 2012.10

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  402. ラングミュアプローブ法によるソリューションプラズマの診断

    市川洋平,Maria-Antoaneta Bratescu,齋藤永宏

    表面技術協会 第126回講演大会 

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    Event date: 2012.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:室蘭工業大学   Country:Japan  

  403. デュアルマイクロ波プラズマ源CVD による窒化炭素膜の作製と評価

    猪飼 治,Maria-Antoaneta Bratescu,齋藤永宏

    表面技術協会 第129回講演大会 

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    Event date: 2012.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:室蘭工業大学   Country:Japan  

  404. ナノ粒子単一分散系の作製と熱的特性の評価

    加藤 諒,Anyarat Watthanaphanit,齋藤永宏

    表面技術協会 第128回講演大会 

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    Event date: 2012.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:室蘭工業大学   Country:Japan  

  405. デュアルマイクロ波プラズマ源CVD による窒化炭素膜の作製と評価

    猪飼 治,Maria-Antoaneta Bratescu,齋藤永宏

    表面技術協会 第126回講演大会 

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    Event date: 2012.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:室蘭工業大学   Country:Japan  

  406. ラングミュアプローブ法によるソリューションプラズマの診断

    市川洋平,Maria-Antoaneta Bratescu,齋藤永宏

    表面技術協会 第126回講演大会 

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    Event date: 2012.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:室蘭工業大学   Country:Japan  

  407. ナノ粒子単一分散系の作製と熱的特性の評価

    加藤 諒,A. Watthanaphanit,齋藤永宏

    表面技術協会 第126回講演大会 

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    Event date: 2012.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:室蘭工業大学   Country:Japan  

  408. 分子軌道法を用いた金属ナノクラスター表面での酸素還元反応の解析

    森下哲典, 上野智永, 齋藤永宏

    表面技術協会 第126回講演大会 

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    Event date: 2012.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:室蘭工業大学   Country:Japan  

  409. The effect of Post Thermal CVD for Hardness and Ultra Water-Repellent Properties in Biomimetically-designed SiOx Film Deposited by Plasma Enhanced CVD International conference

    N. Zettsu, D. Fujimoto, N. Saito

    IUMRS-ICEM2012 

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    Event date: 2012.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  410. Morphology -controlled Synthesis of Graphitic Carbon Nanoballs by Solution Plasma Processing in Benzene International conference

    J. Kang, O. L. Li, N. Zettsu, N. Saito

    IUMRS-ICEM2012 

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    Event date: 2012.9

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  411. Depolymerization of Sodium Alginate by a Plasma Process in Aqueous Solution International conference

    A. Watthanaphanit, N. Saito

    IUMRS-ICEM2012 

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    Event date: 2012.9

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  412. Depolymerization of Sodium Alginate by a Plasma Process in Aqueous Solution International conference

    A. Watthanaphanit, N. Saito

    IUMRS-ICEM2012 

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    Event date: 2012.9

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  413. The effect of Post Thermal CVD for Hardness and Ultra Water-Repellent Properties in Biomimetically-designed SiOx Film Deposited by Plasma Enhanced CVD International conference

    N. Zettsu, D. Fujimoto, N. Saito

    IUMRS-ICEM2012 

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    Event date: 2012.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  414. Optical Properties and Catalytic Activity of Gold-Silver Nanoparticles Synthesized by Solution Plasma Processing International conference

    M.A. Bratescu, T. Ueno, S.P. Cho, O. Takai, N. Saito

    IUMRS-ICEM2012 

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    Event date: 2012.9

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  415. ナノ流体における金ナノ粒子の大きさと形が熱伝導率に及ぼす影響

    加藤 諒、許容康、アンヤラット・ワタナファニット、齋藤 永広

    第22回日本MRS学術シンポジウム 

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    Event date: 2012.9

    Language:Japanese   Presentation type:Poster presentation  

    Venue:ワールドポーターズ(横浜)   Country:Japan  

  416. 薄層カーボンコーティングしたメソポーラスシリカの酸素還元電極触媒活性の向上

    パヌフォン・ポタワン、齋藤永宏

    第22回日本MRS学術シンポジウム 

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    Event date: 2012.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:ワールドポーターズ(横浜)   Country:Japan  

  417. ナノ流体における金ナノ粒子の大きさと形が熱伝導率に及ぼす影響

    加藤 諒、許容康、アンヤラット・ワタナファニット、齋藤 永広

    第22回日本MRS学術シンポジウム 

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    Event date: 2012.9

    Language:Japanese   Presentation type:Poster presentation  

    Venue:ワールドポーターズ(横浜)   Country:Japan  

  418. 薄層カーボンコーティングしたメソポーラスシリカの酸素還元電極触媒活性の向上

    パヌフォン・ポタワン、齋藤永宏

    第22回日本MRS学術シンポジウム 

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    Event date: 2012.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:ワールドポーターズ(横浜)   Country:Japan  

  419. Theoretical reaction analysis for oxygen reduction on metal nanocluster

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    Event date: 2012.9

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  420. 分子軌道法による金属ナノクラスター上酸素還元過程解析

    森下哲典, 上野智永, 齋藤永宏

    第151回日本金属学会 

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    Event date: 2012.9

    Language:Japanese   Presentation type:Poster presentation  

    Venue:愛媛大学城北地区   Country:Japan  

  421. Rapid Synthesis of Highly Ordered Mesoporous Silica with Dense Hydroxyl Group Using Solution Plasma Processing for Thin Layer Carbon Coating

    Panuphong Pootawang,Nagahiro Saito

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    Event date: 2012.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  422. Rapid Synthesis of Highly Ordered Mesoporous Silica with Dense Hydroxyl Group Using Solution Plasma Processing for Thin Layer Carbon Coating

    P. Pootawang,N. Saito

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    Event date: 2012.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  423. 分子軌道法による金属ナノクラスター上酸素還元過程解析

    森下哲典, 上野智永, 齋藤永宏

    資源素材学会 平成24年度秋期大会 

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    Event date: 2012.9

    Language:Japanese   Presentation type:Poster presentation  

    Venue:秋田大学   Country:Japan  

  424. リチウム空気電池正極材料としてのメソポアカーボン担体の合成

    ジュン カン,Helena Li Oi Lun,齋藤永宏

    第73回応用物理学会学術講演会 

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    Event date: 2012.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:愛媛大学城北地区   Country:Japan  

  425. ソリューションプラズマを用いたセルロースの分解

    根本心平,アンヤラット・ワッタナパーニット,齋藤永宏

    資源素材学会 平成24年度秋期大会 

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    Event date: 2012.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:秋田大学   Country:Japan  

  426. Properties of Synthesized Nanoparticles through Characteristics of Solution Plasma

    YongKang Heo,Maria Bratescu,Nagahiro Saito

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    Event date: 2012.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  427. リチウム空気電池正極材料としてのメソポアカーボン担体の合成

    ジュン カン,Helena Li Oi Lun,齋藤永宏

    第73回応用物理学会学術講演会 

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    Event date: 2012.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:愛媛大学城北地区   Country:Japan  

  428. Properties of Synthesized Nanoparticles through Characteristics of Solution Plasma

    Y. Heo,Maria Bratescu,N. Saito

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    Event date: 2012.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  429. ソリューションプラズマを用いたセルロースの分解

    根本心平,アンヤラット・ワッタナパーニット,齋藤永宏

    資源素材学会 平成24年度秋期大会 

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    Event date: 2012.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:秋田大学   Country:Japan  

  430. New Class of Spherical Carbon Nanostructures for Air Cathode of Li/Air Battery Synthesized by Solution Plasma Process (SPP) International conference

    Kang Jun, Oi Lun Helena Li, Nobuyuki Zettsu, Osamu Takai, and Nagahiro Saito

    IUMRS-ICA 2012 

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    Event date: 2012.8

    Language:English   Presentation type:Oral presentation (general)  

    Country:Korea, Republic of  

  431. Effects of Surfactant Type and pH on Stability and Thermal Conductivity of Gold-Platinum Water-Based Nanofluids International conference

    R. Kato, A. Watthanaphanit, and N. Saito

    IUMRS-ICA 2012 

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    Event date: 2012.8

    Language:English   Presentation type:Poster presentation  

    Country:Korea, Republic of  

  432. Synthesis of Nanofl uids for High Thermal Conductivity using Solution Plasma International conference

    Y. K. Heo, O. L. Li, M. A. Bratescu, and N. Saito

    IUMRS-ICA 2012 

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    Event date: 2012.8

    Language:English   Presentation type:Poster presentation  

    Country:Korea, Republic of  

  433. Post Thermal CVD for Hardness of Ultra Water-repellent Films Deposited by Plasma-enhanced CVD Process International conference

    D. Fujimoto, N. Zettsu, and N. Saito

    IUMRS-ICA 2012 

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    Event date: 2012.8

    Language:English   Presentation type:Poster presentation  

    Country:Korea, Republic of  

  434. Discharge in Gelatin/Ascorbic Acid solution for Copper Nanofl uid Preparation International conference

    P. Pootawang, S. Y. Lee, and N. Saito

    IUMRS-ICA 2012 

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    Event date: 2012.8

    Language:English   Presentation type:Oral presentation (general)  

    Country:Korea, Republic of  

  435. Electrical and Chemical Properties of Granulated Metal/a-C Films Deposited by Shielding Arc Ion Plating International conference

    Hoonseung Lee, Maria Antoaneta Bratescu, and Nagahiro Saito

    IUMRS-ICA 2012 

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    Event date: 2012.8

    Language:English   Presentation type:Poster presentation  

    Country:Korea, Republic of  

  436. Preparation of Alginate Oligosaccharides by Solution Plasma Process International conference

    Anyarat Watthanaphanit and Nagahiro Saito

    IUMRS-ICA 2012 

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    Event date: 2012.8

    Language:English   Presentation type:Oral presentation (general)  

    Country:Korea, Republic of  

  437. Synthesis of Nanofl uids for High Thermal Conductivity using Solution Plasma International conference

    Y. K. Heo, O. L. Li, M. A. Bratescu, and N. Saito

    IUMRS-ICA 2012 

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    Event date: 2012.8

    Language:English   Presentation type:Poster presentation  

    Country:Korea, Republic of  

  438. Effects of Surfactant Type and pH on Stability and Thermal Conductivity of Gold-Platinum Water-Based Nanofluids International conference

    R. Kato, A. Watthanaphanit, and N. Saito

    IUMRS-ICA 2012 

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    Event date: 2012.8

    Language:English   Presentation type:Poster presentation  

    Country:Korea, Republic of  

  439. Preparation of Alginate Oligosaccharides by Solution Plasma Process International conference

    A. Watthanaphanit and N. Saito

    IUMRS-ICA 2012 

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    Event date: 2012.8

    Language:English   Presentation type:Oral presentation (general)  

    Country:Korea, Republic of  

  440. Discharge in Gelatin/Ascorbic Acid solution for Copper Nanofl uid Preparation International conference

    P. Pootawang, S. Y. Lee, and N. Saito

    IUMRS-ICA 2012 

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    Event date: 2012.8

    Language:English   Presentation type:Oral presentation (general)  

    Country:Korea, Republic of  

  441. Electrical and Chemical Properties of Granulated Metal/a-C Films Deposited by Shielding Arc Ion Plating International conference

    H. Lee, M. A. Bratescu, and N. Saito

    IUMRS-ICA 2012 

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    Event date: 2012.8

    Language:English   Presentation type:Poster presentation  

    Country:Korea, Republic of  

  442. Post Thermal CVD for Hardness of Ultra Water-repellent Films Deposited by Plasma-enhanced CVD Process International conference

    D. Fujimoto, N. Zettsu, and N. Saito

    IUMRS-ICA 2012 

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    Event date: 2012.8

    Language:English   Presentation type:Poster presentation  

    Country:Korea, Republic of  

  443. 蓮の葉に学ぶ超撥水膜とプラズマ技術

    齋藤 永宏

    日本真空学会関西支部&日本表面科学会関西支部合同セミナー2012 

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    Event date: 2012.7

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:神戸大学百年記念館   Country:Japan  

  444. 蓮の葉に学ぶ超撥水膜とプラズマ技術

    齋藤 永宏

    日本真空学会関西支部&日本表面科学会関西支部合同セミナー2012 

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    Event date: 2012.7

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:神戸大学百年記念館   Country:Japan  

  445. Post Chemical Annealing Effect on Hardness of Ultra Water-repellent Films by Microwave Plasma-enhanced CVD International conference

    D. Fujimoto, N. Zettsu and N. Saito

    IUMRS International Conference of Young Researchers on Advanced Materials 2012 (IUMRS-ICYRAM 2012) 

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    Event date: 2012.7

    Language:English   Presentation type:Poster presentation  

    Country:Singapore  

  446. Catalytic Properties of Nanocluster International conference

    Tomonaga Ueno, Tetsunori Morishita, Tomohito Sudare, Nobuyuki Zettsu, Nagahiro Saito

    IUMRS International Conference of Young Researchers on Advanced Materials 2012 (IUMRS-ICYRAM 2012) 

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    Event date: 2012.7

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Singapore  

  447. Post Chemical Annealing Effect on Hardness of Ultra Water-repellent Films by Microwave Plasma-enhanced CVD International conference

    D. Fujimoto, N. Zettsu and N. Saito

    IUMRS International Conference of Young Researchers on Advanced Materials 2012 (IUMRS-ICYRAM 2012) 

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    Event date: 2012.7

    Language:English   Presentation type:Poster presentation  

    Country:Singapore  

  448. Conversion of Biomass to Ethanol by Solution Plasma International conference

    Helena Oi Lun Li, Kuniko Urashima and Nagahiro Saito

    The eighth International Symposium on Non-Thermal Plasma Technology (ISNTP-8) 

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    Event date: 2012.6

    Language:English   Presentation type:Poster presentation  

    Country:France  

  449. ソリューションプラズマの展望

    齋藤 永宏

    スパッタリングおよびプラズマプロセス技術部会第128回定例研究会 

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    Event date: 2012.5

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:名古屋大学ベンチャービジネスラボラトリ   Country:Japan  

  450. ソリューションプラズマの展望

    齋藤 永宏

    スパッタリングおよびプラズマプロセス技術部会第128回定例研究会 

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    Event date: 2012.5

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:名古屋大学ベンチャービジネスラボラトリ   Country:Japan  

  451. ソリューションプラズマを用いたナノ材料プロセス

    齋藤 永宏

    先端化学・材料技術部会 新素材分科会講演会 

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    Event date: 2012.5

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:新化学技術推進協会, 東京   Country:Japan  

  452. ソリューションプラズマを用いたナノ材料プロセス

    齋藤 永宏

    先端化学・材料技術部会 新素材分科会講演会 

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    Event date: 2012.5

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:新化学技術推進協会, 東京   Country:Japan  

  453. Effects of Surfactant Type and pH on Stability and Thermal Conductivity of Au-Pt Water-Based Nanofluids International conference

    R. Kato, A. Watthanaphanit, N. Saito

    The 3rd Research Symposium on Petrochemical and Materials Technology and The 18th PPC Symposium on Petroleum, Petrochemicals, and Polymer 

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    Event date: 2012.4

    Language:English   Presentation type:Poster presentation  

    Country:Thailand  

  454. Nanoparticles Synthesis and Surface Modification by Solution Plasma Processing International conference

    N. Saito

    The 3rd Research Symposium on Petrochemical and Materials Technology and The 18th PPC Symposium on Petroleum, Petrochemicals, and Polymer 

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    Event date: 2012.4

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Thailand  

  455. Alginate Oligosaccharides Prepared by Solution Plasma Process: Concentration Dependence Study International conference

    Anyarat Watthanaphanit, and Nagahiro Saito

    The 3rd Research Symposium on Petrochemical and Materials Technology and The 18th PPC Symposium on Petroleum, Petrochemicals, and Polymer 

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    Event date: 2012.4

    Language:English   Presentation type:Poster presentation  

    Country:Thailand  

  456. Conversion of Celluose to Energy by Solution Plasma:Solid, Liquid and Gaseous By-Product Analyses International conference

    Helena Oi Lun Li, Kuniko Urashima and Nagahiro Saito

    The 3rd Research Symposium on Petrochemical and Materials Technology and The 18th PPC Symposium on Petroleum, Petrochemicals, and Polymer 

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    Event date: 2012.4

    Language:English   Presentation type:Oral presentation (general)  

    Country:Thailand  

  457. Nanoparticles Synthesis and Surface Modification by Solution Plasma Processing International conference

    N. Saito

    The 3rd Research Symposium on Petrochemical and Materials Technology and The 18th PPC Symposium on Petroleum, Petrochemicals, and Polymer 

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    Event date: 2012.4

    Language:English   Presentation type:Oral presentation (keynote)  

    Country:Thailand  

  458. Effects of Surfactant Type and pH on Stability and Thermal Conductivity of Au-Pt Water-Based Nanofluids International conference

    R. Kato, A. Watthanaphanit, N. Saito

    The 3rd Research Symposium on Petrochemical and Materials Technology and The 18th PPC Symposium on Petroleum, Petrochemicals, and Polymer 

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    Event date: 2012.4

    Language:English   Presentation type:Poster presentation  

    Country:Thailand  

  459. Alginate Oligosaccharides Prepared by Solution Plasma Process: Concentration Dependence Study International conference

    A. Watthanaphanit, and N. Saito

    The 3rd Research Symposium on Petrochemical and Materials Technology and The 18th PPC Symposium on Petroleum, Petrochemicals, and Polymer 

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    Event date: 2012.4

    Language:English   Presentation type:Poster presentation  

    Country:Thailand  

  460. Conversion of Celluose to Energy by Solution Plasma:Solid, Liquid and Gaseous By-Product Analyses International conference

    Helena Oi Lun Li, Kuniko Urashima and N. Saito

    The 3rd Research Symposium on Petrochemical and Materials Technology and The 18th PPC Symposium on Petroleum, Petrochemicals, and Polymer 

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    Event date: 2012.4

    Language:English   Presentation type:Oral presentation (general)  

    Country:Thailand  

  461. Behaveiors of Cells and Bacteria on Superhydrophobic and Superhydrophilic Surfaces International conference

    O. Takai, N. Saito

    2012 MRS Spring Meeting & Exhibit 

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    Event date: 2012.4

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:United States  

  462. Behaveiors of Cells and Bacteria on Superhydrophobic and Superhydrophilic Surfaces International conference

    O. Takai, N. Saito

    2012 MRS Spring Meeting & Exhibit 

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    Event date: 2012.4

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:United States  

  463. Behaviors of Cells and Bacteria on Superhydrophobic and Superhydrophilic Surfaces International conference

    M.A. Bratescu, O. Takai, N. Saito

    2012 MRS Spring Meeting & Exhibit 

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    Event date: 2012.4

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:United States  

  464. ソリューションプラズマとその応用

    齋藤 永宏

    第8回高機能ナノ材料研究会 

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    Event date: 2012.4

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:あいち産業科学技術総合センター   Country:Japan  

  465. ソリューションプラズマとその応用

    齋藤 永宏

    第8回高機能ナノ材料研究会 

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    Event date: 2012.4

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:あいち産業科学技術総合センター   Country:Japan  

  466. 自己組織化メタルナノドットアレイの作製及びフローティングナノドットメモリへの応用

    鷲見竜太郎,是津信行,上野智永,齋藤永宏,細井卓治,渡辺平司

    日本金属学会2012年春期大会 

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    Event date: 2012.3

    Language:Japanese   Presentation type:Poster presentation  

  467. ソリューションプラズマによるメソポーラスシリカ細孔内の機能化とAgナノクラスター合成

    谷田優也,上野智永,是津信行,齋藤永宏

    日本金属学会2012年春期大会 

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    Event date: 2012.3

    Language:Japanese   Presentation type:Poster presentation  

  468. バイアス印加アークイオンプレイティング法を用いて成膜したa-Cフィルムの機械的性質

    李熏聲,上野智永,是津信行,齋藤永宏,高井治

    資源・素材学会 平成24年度(2012年)春季大会 

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    Event date: 2012.3

    Language:Japanese   Presentation type:Oral presentation (general)  

  469. Analysis of Organic Pollutant Degradation in Pulsed Plasma by Coherent Anti-stokes Raman Spectroscopy

    M. Bratescu,上野智永,是津信行,高井治,齋藤永宏

    2012年春季 第59回応用物理学関係連合講演会 

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    Event date: 2012.3

    Language:Japanese   Presentation type:Oral presentation (general)  

  470. シリカナノ細孔内における水のクラスター構造の調査

    青木淑恵,上野智永,是津信行,齋藤永宏

    2012年春季 第59回応用物理学関係連合講演会 

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    Event date: 2012.3

    Language:Japanese   Presentation type:Poster presentation  

  471. Conversion of Biomass to Ethanol by Solution Plasma

    李靄倫,齋藤永宏,高井治

    2012年春季 第59回応用物理学関係連合講演会 

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    Event date: 2012.3

    Language:Japanese   Presentation type:Poster presentation  

  472. ソリューションプラズマによるシリカ細孔内における銀ナノ粒子の合成

    上野智永,谷田優也,是津信行,齋藤永宏

    2012年春季 第59回応用物理学関係連合講演会 

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    Event date: 2012.3

    Language:Japanese   Presentation type:Oral presentation (general)  

  473. ソリューションプラズマにより合成したPdナノ粒子の構造研究

    趙星彪,齋藤永宏,高井治

    2012年春季 第59回応用物理学関係連合講演会 

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    Event date: 2012.3

    Language:Japanese   Presentation type:Oral presentation (general)  

  474. 大気圧プラズマと気相成長法を用いた超はっ水膜の作製

    藤本大地,高橋英昭,上野智永,是津信行,高井治,齋藤永宏

    表面技術協会第125回講演大会,  

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    Event date: 2012.3

    Language:Japanese   Presentation type:Oral presentation (general)  

  475. 溶液中プラズマスパッタ法によりナノ材料の合成及び評価

    胡秀蘭,高井治,齋藤永宏

    表面技術協会第125回講演大会,  

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    Event date: 2012.3

    Language:Japanese   Presentation type:Oral presentation (general)  

  476. Mechanical Properties of a-C Films by Shielding Arc Ion Plating Using Bias Conditions

    李 熏聲,上野智永,是津信行,齋藤永宏,高井治

    表面技術協会第125回講演大会,  

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    Event date: 2012.3

    Language:Japanese   Presentation type:Oral presentation (general)  

  477. 自己組織化メタルナノドットアレイの作製及びフローティングナノドットメモリへの応用

    鷲見竜太郎,是津信行,上野智永,細井卓治,渡辺平治,高井治,齋藤永宏

    表面技術協会第125回講演大会,  

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    Event date: 2012.3

    Language:Japanese   Presentation type:Oral presentation (general)  

  478. Effects of the Temperature on the Synthesis of Gold Nanoparticles for Nanofluid by Solution Plasma International conference

    Y. Heo, T. Ueno, N. Zettsu, N. Saito

    4th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials (ISPlasma2012) 

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    Event date: 2012.3

    Language:English   Presentation type:Poster presentation  

  479. PS@Au Plasmonic Nanoshells with Conical Shape for Highly-sensitive NIR-light responsible LSPR-sensor International conference

    N. Zettsu

    4th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials (ISPlasma2012) 

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    Event date: 2012.3

    Language:English   Presentation type:Oral presentation (general)  

  480. Role of Active Species from Soluion Plasma in Controlling Nanoparticles Size International conference

    M. Bratescu, S. Cho, O. Takai, N. Saito

    4th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials (ISPlasma2012) 

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    Event date: 2012.3

    Language:English   Presentation type:Poster presentation  

  481. Structural Characteristics of Metal Nanoparticles Synthesized by a Glow Discharge in Aqueous International conference

    S. Cho, M. Bratescu, N. Saito, O. Takai

    4th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials (ISPlasma2012) 

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    Event date: 2012.3

    Language:English   Presentation type:Poster presentation  

  482. Modification of Inside the Pores of Mesoporous Silica with Ag Nanoclusters by Solution Plasma Method International conference

    Y. Tanida, T. Ueno, N. Zettsu, N. Saito

    4th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials (ISPlasma2012) 

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    Event date: 2012.3

    Language:English   Presentation type:Poster presentation  

  483. Surface Modification of Multi Wall Carbon Nanotube by Solution Plasma International conference

    T. Ueno, T. Yamamoto, J. Kang, F. Tanabe, N. Zettsu, N. Saito

    4th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials (ISPlasma2012) 

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    Event date: 2012.3

    Language:English   Presentation type:Poster presentation  

  484. Fabrication of Shape-controlled Metal Nanodot Array by Electrostatically-driven Self-assembly as well as their Charge Injection Properties International conference

    R. Sumi, N. Zettsu, T. Hosoi, H. Watanabe, N. Saito

    4th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials (ISPlasma2012) 

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    Event date: 2012.3

    Language:English   Presentation type:Poster presentation  

  485. Synthesis of Noble Metal Nanoparticles by Plasma Sputtering in Solutions International conference

    X. Hu, O. Takai, N. Saito

    4th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials (ISPlasma2012) 

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    Event date: 2012.3

    Language:English   Presentation type:Poster presentation  

  486. Amorphous Nb-doped SrTiO3 based Transparent Conductive Oxide Films on Glass by Ion Beam Sputtering International conference

    N. Zettsu, G. Panomsuwan, N. Saito, O. Takai

    4th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials (ISPlasma2012) 

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    Event date: 2012.3

    Language:English   Presentation type:Poster presentation  

  487. Rapid Synthesis of Conductive Carbon Nanoballs with Well Defined Pore Structures by Solution Plasma Process in Aromatic Hydrocarbo Solvent International conference

    J. Kang, T. Ueno, N. Zettsu, O. Takai, N. Saito

    4th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials (ISPlasma2012) 

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    Event date: 2012.3

    Language:English   Presentation type:Poster presentation  

  488. Fabrication of Superhydrophobic Surface at a Local Area using Atmospheric Pressure Plasma Jet International conference

    C. Terashima, Y. Takahashi, T. Shirafuji, N. Saito, O. Takai

    4th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials (ISPlasma2012) 

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    Event date: 2012.3

    Language:English   Presentation type:Poster presentation  

  489. Ag Nanoclusters in Silica Mesopore Synthesized by Solution Plasma Process International conference

    Y. Tanida, T. Ueno, N. Zettsu, N. Saito

    Twelfth International Symposium on Biomimetic Materials Processing (BMMP-12) 

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    Event date: 2012.1

    Language:English   Presentation type:Poster presentation  

  490. Thermal Conductivity Enhancement of Colloidal Copper Nanofluid Synthesized via Solution Plasma International conference

    P. Pootawang, N. Saito, O. Takai, S.-Y. Lee

    Twelfth International Symposium on Biomimetic Materials Processing (BMMP-12) 

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    Event date: 2012.1

    Language:English   Presentation type:Poster presentation  

  491. Development of EC Cell using Biomimetic-designed InN Film International conference

    T. Kimura, K. Ohkubo, G. Tanaka, Y. Inoue, O. Takai

    Twelfth International Symposium on Biomimetic Materials Processing (BMMP-12) 

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    Event date: 2012.1

    Language:English   Presentation type:Poster presentation  

  492. Deterioration Phenomenon in the Cyclic Polarization of Electrochromic InN International conference

    K. Ohkubo, T. Kimura, G. Tanaka, Y. Inoue, O. Takai

    Twelfth International Symposium on Biomimetic Materials Processing (BMMP-12) 

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    Event date: 2012.1

    Language:English   Presentation type:Poster presentation  

  493. Binary Monolayer of Au and Pt Nanoparticles Fabricated by Electrostatistically-driven Colloidal Self-assembly Approach International conference

    R. Sumi, N. Zettsu, T. Ueno, T. Hosoi, H. Watanabe, N. Saito

    Twelfth International Symposium on Biomimetic Materials Processing (BMMP-12) 

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    Event date: 2012.1

    Language:English   Presentation type:Poster presentation  

  494. Fabrication of the Superhydrophobic Film by Atmospheric Pressure Plasma International conference

    D. Fujimoto, H. Takahashi, T. Ueno, N. Zettsu, O. Takai, N. Saito

    Twelfth International Symposium on Biomimetic Materials Processing (BMMP-12) 

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    Event date: 2012.1

    Language:English   Presentation type:Poster presentation  

  495. Thermal Stability of Au-nanofluid Synthesized by Solution Plasma Process International conference

    Y. K. Heo, T. Ueno, N. Zettsu, N. Saito

    Twelfth International Symposium on Biomimetic Materials Processing (BMMP-12) 

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    Event date: 2012.1

    Language:English   Presentation type:Poster presentation  

  496. Biomimic Anti-stain Surface Treatment of Housing Materials International conference

    N. Isu, Y. Kato, C. Numako, N. Saito, O. Takai

    Twelfth International Symposium on Biomimetic Materials Processing (BMMP-12) 

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    Event date: 2012.1

    Language:English   Presentation type:Poster presentation  

  497. FCC Metal Nanoparticles Fabricated by Solution Plasma Processing International conference

    S.-P. Cho, M. A. Bratescu, N. Saito, O. Takai

    Twelfth International Symposium on Biomimetic Materials Processing (BMMP-12) 

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    Event date: 2012.1

    Language:English   Presentation type:Poster presentation  

  498. Solution Plasma Synthesized Pt-Au Nanoparticles on Carbon and their Application for Lithium-air Battery International conference

    Y. Iwai, C. Terashima, S.-P. Cho, N. Saito, O. Takai

    Twelfth International Symposium on Biomimetic Materials Processing (BMMP-12) 

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    Event date: 2012.1

    Language:English   Presentation type:Poster presentation  

  499. Influence of Amino Acid Sequence and Surface Functional Group on Peptide Adsorption International conference

    F. Watarai, T. Ueno, N. Zettsu, C. Terashima, N. Saito, O. Takai

    Twelfth International Symposium on Biomimetic Materials Processing (BMMP-12) 

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    Event date: 2012.1

    Language:English   Presentation type:Poster presentation  

  500. Transparent DLC Films on Polycarbonate Synthesized by PECVD International conference

    S. Kariwa, C. Terashima, N. Saito, O. Takai

    Twelfth International Symposium on Biomimetic Materials Processing (BMMP-12) 

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    Event date: 2012.1

    Language:English   Presentation type:Poster presentation  

  501. Synthesis and Oxygen Reduction Activity of Metal-free Nitrogen Doped Carbon Materials by Thermal CVD International conference

    S. Akiyama, C. Terashima, N. Saito, O. Takai

    Twelfth International Symposium on Biomimetic Materials Processing (BMMP-12) 

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    Event date: 2012.1

    Language:English   Presentation type:Poster presentation  

  502. Size-controlled Gold Nanoparticles Synthesized in Solution Plasma International conference

    M. A. Bratescu, S.-P. Cho, T. Ueno, N. Zettsu, O. Takai, N. Saito

    Twelfth International Symposium on Biomimetic Materials Processing (BMMP-12) 

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    Event date: 2012.1

    Language:English   Presentation type:Poster presentation  

  503. Effect of Surface Functional Groups and Surface Electric Charge on Peptide Adsorption International conference

    F. Watarai, T. Ueno, N. Zettsu, C. Terashima, N. Saito, O. Takai

    Nagoya Univ.-Tsinghua Univ.-Toyota Motor Corp.-Hokkaido Univ.-Univ. Electron. Sci. Tech. China Joint Symposium, Chengdu, China) 

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    Event date: 2011.12

    Language:English   Presentation type:Poster presentation  

  504. Synthesis of Metal-free Heteroatoms Doped Carbon Materials from Different Hydrocarbon Sources for Oxygen Reduction Reaction International conference

    S. Akiyama, C. Terashima, N. Saito, O. Takai

    Nagoya Univ.-Tsinghua Univ.-Toyota Motor Corp.-Hokkaido Univ.-Univ. Electron. Sci. Tech. China Joint Symposium,  

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    Event date: 2011.12

    Language:English   Presentation type:Poster presentation  

  505. ソリューションプラズマによる白金-金ナノ粒子の合成とリチウム空気電池への応用, 第21回日

    岩井雄二郎,寺島千晶,趙星彪,齋藤永宏,高井治

    第21回日本MRS学術シンポジウム 

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    Event date: 2011.12

    Language:Japanese   Presentation type:Poster presentation  

  506. ソリューションプラズマによるナノ材料合成の進展

    寺島千晶,齋藤永宏,高井治

    第21回日本MRS学術シンポジウム 

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    Event date: 2011.12

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

  507. PS@Au plasmonic nanoshells with conical shape for highly-sensitive NIR-light responsible LSPR sensor

    N. Zettsu, S. Uchida, Y. Yamamoto, T. Ueno,N. Saito

    第21回日本MRS学術シンポジウム 

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    Event date: 2011.12

    Language:Japanese   Presentation type:Oral presentation (general)  

  508. 異なる原料による金属フリー異元素ドープカーボン材料の合成と酸素還元活性

    秋山慎太朗,寺島千晶,齋藤永宏,高井治

    第21回日本MRS学術シンポジウム 

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    Event date: 2011.12

    Language:Japanese   Presentation type:Poster presentation  

  509. Conversion of the World’s Most Abundant Biomass Cellulose to Energy

    オイルンヘレナリ,齋藤永宏,高井治

    第21回日本MRS学術シンポジウム 

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    Event date: 2011.12

    Language:Japanese   Presentation type:Poster presentation  

  510. PECVD法によりポリマー上に成膜したDLC膜の透明性と硬度の向上

    苅和慎平,寺島千晶,齋藤永宏,高井治

    第21回日本MRS学術シンポジウム 

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    Event date: 2011.12

    Language:Japanese   Presentation type:Poster presentation  

  511. 表面官能基の異なるSAM表面におけるペプチド吸着挙動

    渡会冬樹,上野智永,是津信行,寺島千晶,齋藤永宏,高井治

    第21回日本MRS学術シンポジウム 

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    Event date: 2011.12

    Language:Japanese   Presentation type:Poster presentation  

  512. Fabrication of self-assembled metal nanodot gate MOS capacitor and evaluation of their charge injection properties International conference

    R. Sumi, N. Zettsu, T. Hosoi, H. Watanabe, O. Takai, N. Saito

    International Symposium on EcoTopia Science'11 

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    Event date: 2011.12

    Language:English   Presentation type:Poster presentation  

  513. Effect of Surface Functional Groups and pH Condition on Peptide Adsorption International conference

    F. Watarai, T. Ueno, N. Zettsu, C. Terashima, N. Saito, O. Takai

    International Symposium on EcoTopia Science'11  

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    Event date: 2011.12

    Language:English   Presentation type:Poster presentation  

  514. Effects of the Applied Voltage on the Synthesis of Gold Nanoparticles for Nanofluid by Solution Plasma International conference

    Y.K. Heo, T. Ueno, N. Zettsu, N.Saito

    International Symposium on EcoTopia Science'11 

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    Event date: 2011.12

    Language:English   Presentation type:Poster presentation  

  515. High-dense Decoration of Mesoporous Silica with Ag Nanoclusters by Solution Plasma International conference

    Y.Tanida, T. Ueno, N. Zettsu, N.Saito

    International Symposium on EcoTopia Science'11, Nagoya, Japan 

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    Event date: 2011.12

    Language:English   Presentation type:Poster presentation  

  516. Thin film Lithium Ion Battery using Li 3PO4 Solid Electrolyte International conference

    K. Sawa, T. Ueno, N. Zettsu, N. Saito

    International Symposium on EcoTopia Science'11 

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    Event date: 2011.12

    Language:English   Presentation type:Poster presentation  

  517. Growth of Carbon Nanotubes from Carbon Nanoballs Surface International conference

    K. Ohno, T. Ueno, N. Zettsu, N. Saito

    International Symposium on EcoTopia Science'11 

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    Event date: 2011.12

    Language:English   Presentation type:Poster presentation  

  518. Fabrication of Single-nano-sized Pt Cluster Supported on Graphene Nanosheets by Solution Plasma International conference

    K. Sadasue, N. Zettsu, T. Ueno, N. Saito

    International Symposium on EcoTopia Science'11 

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    Event date: 2011.12

    Language:English   Presentation type:Poster presentation  

  519. Behavior of Specific Water on Polyelectrolyte Brush International conference

    Y. Aoki, T. Ueno, N. Zettsu, T. Fujima, N. Saito

    International Symposium on EcoTopia Science'11 

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    Event date: 2011.12

    Language:English   Presentation type:Poster presentation  

  520. Fabrication of 111)-oriented SrTiO3/BaTiO3 SuperLattices by Ion Beam Deposition International conference

    G. Panomsuwan, T. Ueno, N. Zettsu, N. Saito, O.Takai

    International Symposium on EcoTopia Science'11 

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    Event date: 2011.12

    Language:English   Presentation type:Poster presentation  

  521. Chemical Structures and Mechanical Characteristics of a-C and a-CN Films by Shielding Arc Ion Plating as Functions of Bias Voltages International conference

    H. Lee, T. Ueno, N. Zettsu, N. Saito, O.Takai

    International Symposium on EcoTopia Science'11 

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    Event date: 2011.12

    Language:English   Presentation type:Poster presentation  

  522. Transparency and Hardness Diamond-like Carbon Deposited by PECVD on Polymer International conference

    S. Kariwa, C. Terashima, N. Saito, O. Takai

    International Symposium on EcoTopia Science'11 

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    Event date: 2011.12

    Language:English   Presentation type:Poster presentation  

  523. Synthesis and Characteristics of Metal-free Heteroatom-doped Carbon Nanoballs for Oxygen Reduction Reaction International conference

    S. Akiyama, C. Terashima, N. Saito, O.Takai

    International Symposium on EcoTopia Science'11 

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    Event date: 2011.12

    Language:English   Presentation type:Poster presentation  

  524. Solution Plasma Synthesis of Gold-platinum Nanoparticles Modified carbon and Application for Lithium-air battery International conference

    Y. Iwai, C. Terashima, S. Cho, N. Saito, O. Takai

    International Symposium on EcoTopia Science'11 

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    Event date: 2011.12

    Language:English   Presentation type:Poster presentation  

  525. Effect of Surrounding Chemistry on the Size of Gold Nanoparticles Synthesized in Solution Plasma International conference

    M. A. Bratescu, N. Saito, O. Takai

    International Symposium on EcoTopia Science'11 

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    Event date: 2011.12

    Language:English   Presentation type:Oral presentation (general)  

  526. New Approach of Energy Crisis: Cellulose as a Potential Energy Resource International conference

    O.L.Li, N. Saito, O. Takai

    International Symposium on EcoTopia Science'11 

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    Event date: 2011.12

    Language:English   Presentation type:Oral presentation (general)  

  527. Indication of Sustainable Development for Green Innovation, International Symposium on EcoTopia Science'11 International conference

    K. Urashima, O. L. Li, N. Saito, O. Takai

    Nagoya, Japan 

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    Event date: 2011.12

    Language:English   Presentation type:Poster presentation  

  528. Spectrophotometrical Analysis of Solution Plasma by Coherent Anti-Stokes Raman Spectroscopy, International Symposium on EcoTopia Science'11 International conference

    D. Fujimoto, M. A. Bratescu, T. Ueno, N. Zettsu, O.Takai, N. Saito

    Nagoya, Japan 

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    Event date: 2011.12

    Language:English   Presentation type:Poster presentation  

  529. One-step synthesis of nanocarbon-supported metal nanoparticle catalysts by modified solution plasma processing International conference

    K. Jun, T. Ueno, N. Zettsu, O. Takai, N. Saito

    International Symposium on EcoTopia Science'11 

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    Event date: 2011.12

    Language:English   Presentation type:Poster presentation  

  530. HRTEM studies of Au and Pd nanoparticles Fabricated by Solution Plasma Processing, International Symposium on EcoTopia Science'11 International conference

    S.P. Cho, M. A. Bratescu, N. Saito, O. Takai

    Nagoya, Japan 

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    Event date: 2011.12

    Language:English   Presentation type:Poster presentation  

  531. Novel Fabrication of Platinum Nanoparticles by Solution Plasma Sputtering, International Symposium on EcoTopia Science'11 International conference

    X. Hu, O. Takai, N. Saito

    Nagoya, Japan 

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    Event date: 2011.12

    Language:English   Presentation type:Poster presentation  

  532. ソリューションプラズマにより合成した金-白金ナノ粒子担持カーボンの合成とリチウム空気電池への応用

    岩井雄二郎,寺島千晶,趙星彪,齋藤永宏,高井治

    第21回学生による材料フォーラム 

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    Event date: 2011.12

    Language:Japanese   Presentation type:Poster presentation  

  533. Synthesis of Metal-free N-doped Nanocarbon materials for Oxygen Reduction Activity International conference

    S. Akiyama, C. Terashima, N. Saito, O. Takai

    2011 MRS Fall Meeting & Exhibit 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

  534. 自己組織化メタルナノドットアレイの作製及びフローティングナノドットメモリへの応用

    鷲見竜太郎,上野智永,是津信行,細井卓治,渡部平司,高井治,齋藤永宏

    平成23年度表面技術若手研究者・技術者研究交流発表会 

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    Event date: 2011.11

    Language:Japanese   Presentation type:Oral presentation (general)  

  535. Synthesis of Carbon Nanomaterials for Air Cathode of Li/air Battery by Solution Plasma International conference

    J. Kang, N. Saito, O. Takai

    2011 MRS Fall Meeting & Exhibit 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

  536. PECVD法によるポリカーボネートへの透明・硬質炭素膜の作製

    苅和慎平,寺島千晶,齋藤永宏,高井治

    平成23年度表面技術若手研究者・技術者研究交流発表会 

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    Event date: 2011.11

    Language:Japanese   Presentation type:Oral presentation (general)  

  537. ソリューションプラズマを用いたメソポーラスシリカ細孔内での銀ナノクラスター合成

    谷田優也,上野智永,是津信行,齋藤永宏

    平成23年度表面技術若手研究者・技術者研究交流発表会 

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    Event date: 2011.11

    Language:Japanese   Presentation type:Oral presentation (general)  

  538. 大気圧プラズマと熱処理を用いた超はっ水膜の作製

    藤本大地,高橋英昭,上野智永,是津信行,高井治,齋藤永宏

    平成23年度表面技術若手研究者・技術者研究交流発表会 

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    Event date: 2011.11

    Language:Japanese   Presentation type:Oral presentation (general)  

  539. ペプチド吸着におけるアミノ酸配列と表面官能基の影響

    渡会冬樹,上野智永,是津信行,寺島千晶,齋藤永宏,高井治

    平成23年度表面技術若手研究者・技術者研究交流発表会 

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    Event date: 2011.11

    Language:Japanese   Presentation type:Oral presentation (general)  

  540. Solution Plasma Treatment of TiO2 Nanoparticles International conference

    C. Terashima, A. Nagata, Y. Iwai, N. Saito, O. Takai

    Nagoya Univ.-Tsinghua Univ.-Toyota Motor Corp.-Hokkaido Univ.-Univ. Electron. Sci. Tech. China Joint Symposium 

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    Event date: 2011.11

    Language:English   Presentation type:Oral presentation (invited, special)  

  541. Fabrication of Noble Metal Nanoparticles by Solution Plasma Processing International conference

    X. Hu, O. Takai, N. Saito

    Nagoya Univ.-Tsinghua Univ.-Toyota Motor Corp.-Hokkaido Univ.-Univ. Electron. Sci. Tech. China Joint Symposium  

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    Event date: 2011.11

    Language:English   Presentation type:Oral presentation (invited, special)  

  542. Treatment of Non-point Sources by an Integrated Thermal Plasma System International conference

    O.L.Li, J.S.Chang, Y. Guo, N. Saito, O. Takai

    2nd ISNPEDADM-2011 

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    Event date: 2011.11

    Language:English   Presentation type:Oral presentation (general)  

  543. A Novel Solution Plasma Sputtering Technique for Well-defined Metal Nanoparticles International conference

    X. Hu, O. Takai, N. Saito

    2nd ISNPEDADM-2011 

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    Language:English   Presentation type:Poster presentation  

  544. Biomimic Anti-Stain Surface Treatment for Housing Wet Area International conference

    N. Isu, Y. Kato, N. Saito, O. Takai

    15th International Conference on Thin Films 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

  545. Thin Film Lithium Ion Battery using Li3PO4 Solid Electrolyt International conference

    K. Sawa, T. Ueno, N. Zettsu, N. Saito

    15th International Conference on Thin Films 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

  546. Single-Nano-sized Pt Cluster Supported on Graphene, Nanosheets Synthesized by Solution Plasma International conference

    K. Sadasue, N. Zettsu, T. Ueno, N. Saito

    15th International Conference on Thin Films 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

  547. XAFS analysis of Ag in the Anti-Bacterial Ceramis Glaze of Sanitary Wave International conference

    N. Isu, Y. Kato, C. Numako N. Saito, O. Takai

    15th International Conference on Thin Films 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

  548. Growth of Metallic Carbon Naotubes From Carbon Nanoballs Surface International conference

    K. Ohno, N. Zettsu, T. Ueno, N. Saito

    15th International Conference on Thin Films 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

  549. Catalytic Activity of Nickel-containing Amorphous Carbon (Ni:aC) Thin Films by Shielding Arc Ion Plating using Bias Conditions International conference

    H. Lee, N. Saito, O. Takai

    15th International Conference on Thin Films 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

  550. Discharge Characteristics of Packed Bed HF Bipolar Liquid Solution Plasmas International conference

    O.L.Li, J.S. Chang, J. Hieda, N. Saito, O. Takai

    15th International Conference on Thin Films 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

  551. Solution Plasma-based Synthesis of Spherical Carbon Nanostructures Having Large Pore Volume for Air Cathode of Li/air Battery International conference

    J. Kang, O. Takai, N. Saito

    15th International Conference on Thin Films 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

  552. A model for Electron Impact Dissociation Ionization of Organosilicon Molecules International conference

    Y. Yun, M. Lee, Y.Inoue, N. Saito, O. Takai

    15th International Conference on Thin Films 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

  553. Synthesis and Characteristics of Metal-free Nitrogen Doped Nanocarbon Materials for Oxygen Reduction Reaction International conference

    S. Akiyama, C. Terashima, N. Saito, O. Takai

    15th International Conference on Thin Films 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

  554. A Reaction Mechanism of Organosilicon Plasma for SiO:CH Thin Films International conference

    Y. Yun, M. Lee, Y. Inoue, N. Saito, O. Takai

    15th International Conference on Thin Films 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

  555. Microstructure Study of Metal Nanoparticles Fabricated by Solution Plasma Processing International conference

    S. P. Cho, M. A. Bratescu, N. Saito, O. Takai

    15th International Conference on Thin Films 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

  556. Hard and Transparent Diamond-like Carbon Films at Low Temperature Deposition International conference

    S. Kariwa, C. Terashima, N. Saito, O. Takai

    15th International Conference on Thin Films 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

  557. Effect of Surface Wettability and Surface Functional Groups on Peptide Adsorption International conference

    F. Watarai, T. Ueno, N. Zettsu, C. Terashima, N. Saito, O. Takai

    15th International Conference on Thin Films 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

  558. Synthesis and Characterization of Gold Nanoparticles Through Solution Plasma Process International conference

    Y. K. Heo, T. Ueno, N. Zettsu, N. Saito

    15th International Conference on Thin Films 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

  559. Solution Plasma Synthesis of Gold Nanoparticles on Carbon for Lithium-air Battery Applications International conference

    Y. Iwai, C. Terashima, S.P. Cho, N. Saito, O. Takai

    15th International Conference on Thin Films 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

  560. Diagnosis of Solution Plasma for Synthesis of Gold Nanoparticles International conference

    D. Fujimoto, J. Hieda, M. A. Bratescu, O. Takai, N. Saito

    15th International Conference on Thin Films 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

  561. Solution Plasma-assisted Surface Functionalization of Grapheme Sheets for Enhancement of the Solubility in Water International conference

    N. Tsuda, T. Ueno, S.P.Cho, N. Zettsu, O. Takai, N. Saito

    15th International Conference on Thin Films 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

  562. High-dense Decoration of Mesoporous Silica Inner Wallswith Ag Nanoclusters through a Modified SolutionPlasma Processing International conference

    Y. Tanida, N. Zettsu,T. Ueno, N. Saito

    15th International Conference on Thin Films 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

  563. Synthesis of Organic/Inorganic Hybrid Material by Controlling Reaction Field by Oscillating Reaction International conference

    T. Sudare, N. Zettsu, T. Ueno, N. Saito

    15th International Conference on Thin Films 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

  564. Spectroscopic Characterization of Specific Water in Silica Nano Pores International conference

    Y. Aoki, T. Ueno, M.A. Bratescu, N. Zettsu, N. Saito

    15th International Conference on Thin Films 

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    Language:English   Presentation type:Poster presentation  

  565. Surface Properties of Nanocarbon Materials Covered with High-density Amino Functional Groupslicon International conference

    F. Tanabe, T. Yamamoto, T. Ueno, N. Zettsu, N. Saito, O. Takai

    15th International Conference on Thin Films 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

  566. Fabrication of Shape-controlled Metal Nanodot Array by Electrostatistically?driven Self-assembly as well as their Charge Injection Properties International conference

    R. Sumi, T. Hosoi, H. Watanave, X. Hu, O. Takai, N. Saito, N. Zettsu

    AVS 58th International Sympposium & Exhibition 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

  567. High Rate DC Reactive Sputtering of SiO2 films with a new rotary cathode International conference

    H. Kojima, N. Saito, O. Takai

    15th International Conference on Thin Films 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

  568. Properties of ITO Films Prepared using Highly Dense plasma-assisted Electron Beam Evaporation( HDPE) Process International conference

    H. Kojima, N. Saito, O. Takai

    15th International Conference on Thin Films 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

  569. Effects of Substrate Temperature on ITO Films using Highly Dense Plasma-assisted Electron Beam Evaporation (HDPE) Process International conference

    H. Kojima, N. Saito, O. Takai

    15th International Conference on Thin Films 

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    Language:English   Presentation type:Poster presentation  

  570. Effect of Surrounding Chemistry on the Size of Gold Nanoparticles Synthesized in Solution Plasma International conference

    M. A. Bratescu, O. Takai, N. Saito

    15th International Conference on Thin Films 

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    Event date: 2011.11

    Language:English   Presentation type:Oral presentation (general)  

  571. Fabrication of Shape-controlled Metal Nanodot Array by Electrostatically-driven Self-Assembly as well as their Charge Injection Properties International conference

    R. Sumi, T. Hosoi, H. Watanabe, X. Hu, O. Takai, N. Saito, N. Zettsu

    15th International Conference on Thin Films 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

  572. Synthesis of Gold Nanoparticles by Solution Plasma Sputtering in Various Solvents International conference

    X. Hu, O. Takai, N. Saito

    15th International Conference on Thin Films 

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    Language:English   Presentation type:Poster presentation  

  573. Study of Ag2O doped SnO2-Graphene Nanoparticles as Possible Anode Materials for Utilizing High Performance Li-ion Batteries International conference

    J. Sornsakdanuphap, N. Saito, O. Takai

    15th International Conference on Thin Films 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

  574. Orientarion Control of Textured SrTiO3 Thin Films on Platinized Al2O3 by Ion Beam Deposition International conference

    G. Panomsuwan, N. Saito, O. Takai

    15th International Conference on Thin Films 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

  575. Soluthion Plasma-Assisted Surface Functionalization of Chemicaly Converted Graphene Sheet toward an Enhancement of Solubility in Solution International conference

    N. Tsuda, T. Ueno, N. Zettsu, S.P. Cho, O. Takai, N. Saito

    AVS 58th International Sympposium & Exhibition 

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    Event date: 2011.11

    Language:English   Presentation type:Oral presentation (general)  

  576. Synthesis of Carbon Nanoballs, Covered by CNTs with Metallic Conductivity International conference

    K. Ohno, N. Zettsu, T. Ueno, O. Takai, N. Saito

    AVS 58th International Sympposium & Exhibition 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

  577. Solution Plasma Assisted Surface Decoration of Chemically Converted Graphene Sheet with Various Metallica Nanoparticles International conference

    K. Sadasue, N. Zettsu, T. Ueno, O. Takai, N. Saito

    AVS 58th International Sympposium & Exhibition 

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    Event date: 2011.11

    Language:English   Presentation type:Poster presentation  

  578. Mechanism of Au Nanoparticles Formation in Solution Plasma International conference

    M.A. Bratescu, O. Takai, N. Saito

    AVS 58th International Symposium & Exhibition 

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    Event date: 2011.11

    Language:English   Presentation type:Oral presentation (general)  

  579. Anticorrosive Performance of Fluorinated Double Layered Hydroxide Film Formed on Magnesium Alloy International conference

    T. Ishizaki, N. Saito, M. Sakamoto

    EUROCORR2011 

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    Event date: 2011.10

    Language:English   Presentation type:Poster presentation  

  580. Nanostructured Materials and Surfaces by Plasma Processing International conference

    N.Saito

    ICAMN2011 

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    Event date: 2011.10

    Language:English   Presentation type:Oral presentation (keynote)  

  581. 振動反応による反応場制御による有機/無機ハイブリッド材料の創製

    簾智仁,上野智永,是津信行,齋藤永宏

    第60回高分子討論会 

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    Event date: 2011.9

    Language:Japanese   Presentation type:Poster presentation  

  582. ソリューションプラズマ法によるグラフェンの化学修飾

    津田典明,上野智永,是津信行,齋藤永宏

    第58回材料と環境討論会 

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    Event date: 2011.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  583. ペプチド吸着における表面の濡れ性及び表面官能基の影響

    渡会冬樹,上野智永,是津信行,寺島千晶,齋藤永宏,高井治

    第60回高分子討論会 

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    Event date: 2011.9

    Language:Japanese   Presentation type:Poster presentation  

  584. Application of Solution Plasma in Food Processing

    O.L. Li, N. Saito, O. Takai

    第58回材料と環境討論会 

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    Event date: 2011.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  585. ヘテロ構造ゲルを媒体に用いた反応拡散系におけるパターン形成

    上野智永,齋藤永宏,吉田亮

    第60回高分子討論会 

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    Event date: 2011.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  586. ソリューションプラズマにより合成したナノ粒子触媒によるリチウム空気電池の劣化防止

    岩井雄二郎,寺島千晶,趙星彪,齋藤永宏,高井治

    第58回材料と環境討論会 

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    Event date: 2011.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  587. 硫化物系固体電解質を用いた薄膜リチウムイオン電池の作製

    澤昴平,齋藤永宏

    平成23年度資源・素材関係学協会合同秋季大会 

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    Event date: 2011.9

    Language:Japanese   Presentation type:Poster presentation  

  588. アミノ基を高密度に導入したナノカーボン材料の表面特性

    田辺郁,カン ジュン,山本泰望,上野智永,是津信行,齋藤永宏,高井治

    平成23年度資源・素材関係学協会合同秋季大会 

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    Event date: 2011.9

    Language:Japanese   Presentation type:Poster presentation  

  589. ソリューションプラズマ場における金ナノクラスター合成のための水のかご効果の分析

    藤本大地,上野智永,是津信行,高井治,齋藤永宏

    平成23年度資源・素材関係学協会合同秋季大会 

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    Event date: 2011.9

    Language:Japanese   Presentation type:Poster presentation  

  590. ソリューションプラズマによるナノカーボン物質の合成

    姜俊,齋藤永宏,高井治

    平成23年度資源・素材関係学協会合同秋季大会 

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    Event date: 2011.9

    Language:Japanese   Presentation type:Poster presentation  

  591. 金属フリー窒素ドープ炭素材料の合成と酸素還元活性

    秋山慎太朗,寺島千晶,齋藤永宏,高井治

    平成23年度資源・素材関係学協会合同秋季大会 

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    Event date: 2011.9

    Language:Japanese   Presentation type:Poster presentation  

  592. シリカナノ細孔内水の分光学的調査

    青木淑恵,ブラテスク マリア アントアネッタ,上野智永,是津信行,齋藤永宏

    平成23年度資源・素材関係学協会合同秋季大会 

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    Event date: 2011.9

    Language:Japanese   Presentation type:Poster presentation  

  593. 分光法を用いたメソポーラスシリカ細孔内水の振動解析

    青木淑恵,上野智永,M. A. Bratescu,是津信行,齋藤永宏

    表面技術協会第124回講演大会,  

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    Event date: 2011.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  594. 自己組織化メタルドットアレイの作製とフローティングナノドットメモリへの応用

    鷲見竜太郎,細井卓治,渡辺平治,胡周蘭,高井治,齋藤永宏,是津信行

    表面技術協会第124回講演大会 

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    Event date: 2011.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  595. ソリューションプラズマを用いたカーボン材料の表面修飾と分散性の向上

    上野智永,野口陽平,是津信行,高井治,齋藤永宏

    表面技術協会第124回講演大会 

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    Event date: 2011.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  596. CCP-CVDにおける有機シリコン原料分子中の酸素原子の挙動2

    根岸正樹,星野隆史,井上泰志,高井治

    表面技術協会第124回講演大会 

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    Event date: 2011.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  597. ソリューションプラズマによるシリカ合成及びその析出形態に及ぼすpHの影響

    山本泰望,上野智永,是津信行,齋藤永宏,高井治

    表面技術協会第124回講演大会 

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    Event date: 2011.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  598. 金属フリーナノカーボンによる酸素還元活性の発現

    秋山慎太朗,寺島千晶,齋藤永宏,高井治

    表面技術協会第124回講演大会 

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    Event date: 2011.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  599. Layer Thickness Dependence on Crystallographic and Surface Structure of SrTiO3 Base Superlattices Fabricated by Ion Beam Deposition

    P. Gasidit,上野智永,是津信行,齋藤永宏,高井治

    表面技術協会第124回講演大会 

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    Event date: 2011.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  600. 振動反応による反応場制御による有機/無機ハイブリッド材料お創製

    簾智仁,上野智永,是津信行,齋藤永宏

    表面技術協会第124回講演大会,  

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    Event date: 2011.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  601. 酸化銀をドープした酸化スズ-グラフェンナノ複合材料の特性評価

    S. Jirapong,上野智永,是津信行,齋藤永宏

    表面技術協会第124回講演大会 

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    Event date: 2011.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  602. ソリューションプラズマを用いた銀ナノクラスター担持メソポーラスシリカ触媒の作製

    谷田優也,是津信行,上野智永,齋藤永宏

    表面技術協会第124回講演大会 

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    Event date: 2011.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  603. ソリューションプラズマを用いた金ナノ流体の合成での電圧効果

    許容康,上野智永,是津信行,齋藤永宏

    表面技術協会第124回講演大会 

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    Event date: 2011.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  604. Solution Plasma Synthesis of Gold Nanoparticle Modified Carbon and Application for Lithium-Air Batery International conference

    Y. Iwai, C. Terashima, S.P. Cho, N. Saito, O. Takai

    The 8th Asian-European International Conference on Plasma Surface Engineering 

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    Event date: 2011.9

    Language:English   Presentation type:Poster presentation  

  605. ソリューションプラズマプロセスを用いたPtナノ粒子担持グラフェンの作製

    定末佳祐,是津信行,上野智永,齋藤永宏

    表面技術協会第124回講演大会 

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    Event date: 2011.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  606. ソリューションプラズマを利用した金属空気電極用ナノカーボン物質の合成

    カン ジュン,上野智永,是津信行,高井治,齋藤永宏

    表面技術協会第124回講演大会 

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    Event date: 2011.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  607. ソリューションプラズマによるグラフェンシートの化学修飾

    津田典明,趙星彪,上野智永,是津信行,齋藤永宏

    表面技術協会第124回講演大会 

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    Event date: 2011.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  608. 金属型CNT-CNBハイブリッド材料の開発

    大野一佳,上野智永,是津信行,齋藤永宏

    表面技術協会第124回講演大会 

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    Event date: 2011.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  609. 真空蒸着法によるチオリシコンの作製

    澤昴平,上野智永,是津信行,齋藤永宏

    表面技術協会第124回講演大会 

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    Event date: 2011.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  610. Morphology and Adhesion Properties of Amorphous Carbon Films by Shielding Arc Ion Plating Using Bias Conditions

    李熏聲,齋藤永宏,高井治

    表面技術協会第124回講演大会 

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    Event date: 2011.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  611. ソリューションプラズマを用いたPdナノ粒子の合成と分散特性

    趙星彪,齋藤永宏,高井治

    表面技術協会第124回講演大会 

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    Event date: 2011.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  612. ソリューションプラズマ法より燃料電池用触媒の合成とその評価

    胡秀蘭,高井治,齋藤永宏

    表面技術協会第124回講演大会 

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    Event date: 2011.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  613. 機能性表面におけるペプチド吸着挙動の分析

    渡会冬樹,上野智永,是津信行,寺島千晶,齋藤永宏,高井治

    表面技術協会第124回講演大会 

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    Event date: 2011.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  614. Disinfection and Descomposition of Chemical Compounds by Solution Plasma

    Li Oi Lun,齋藤永宏,高井治

    表面技術協会第124回講演大会 

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    Event date: 2011.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  615. Contribution of Speciation of Aqueous HAuCl4 Solution on Gold Nanoparticles Synthesis in Solution Plasma International conference

    M. A. Bratescu, J. Hieda, N. Saito, O. Takai

    20th International Symposium on Plasma Chemistry  

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    Event date: 2011.9

    Language:English   Presentation type:Poster presentation  

  616. Solution Plasma Processing International conference

    M. A. Bratescu, N. Saito, O. Takai

    The 8th Asian-European International Conference on Plasma Surface Engineering 

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    Event date: 2011.9

    Language:English   Presentation type:Oral presentation (keynote)  

  617. Biomimetic Materials Processing ~ a cold plasma in cold solution ~ International conference

    N. Saito

    12th International Conference in Asia (IUMRS-ICA 2011) 

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    Event date: 2011.9

    Language:English   Presentation type:Oral presentation (keynote)  

  618. ソリューションプラズマにより合成した金ナノ粒子担持カーボンの電極特性とリチウム空気電池への応用

    岩井雄二郎,寺島千晶,趙星彪,齋藤永宏,高井治

    2011年電気化学秋季大会 

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    Event date: 2011.9

    Language:Japanese   Presentation type:Poster presentation  

  619. ソリューションプラズマ処理した酸化チタン電極の電気化学特性

    寺島千晶,永田章,岩井雄二郎,齋藤永宏,高井治

    2011年電気化学秋季大会 

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    Event date: 2011.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  620. Adhesion Control of Bacteria with Micropatterned Superhydrophobic/Superhydrophilic and Superhydrophobic/Poly(Ethylene Glycol) Surfaces International conference

    N. Andreeva, T. Ishizaki, N. Saito

    20th INTERNATIONAL MATERIALS RESEARCH CONGRESS (2011) 

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    Event date: 2011.9

    Language:English   Presentation type:Poster presentation  

  621. PECVD法によるポリマー上への透明DLC膜の低温合成,第72回応用物理学会学術講演会

    苅和慎平,寺島千晶,齋藤永宏,高井治

    第72回応用物理学会学術講演会 

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    Event date: 2011.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  622. 酸素還元活性発現を目指した金属フリー窒素ドープカーボンの合成, 第72回応用物理学会学術講演会

    秋山慎太朗,寺島千晶,齋藤永宏,高井治

    第72回応用物理学会学術講演会 

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    Event date: 2011.8

    Language:Japanese   Presentation type:Oral presentation (general)  

  623. 液中気泡内プラズマにおける気泡サイズ揺らぎの影響,

    白藤立,齋藤永宏,高井治

    第72回応用物理学会学術講演会 

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    Event date: 2011.8

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

  624. ソリューションプラズマプロセスにより作製したPtナノ粒子担持グラフェン

    定末佳祐,是津信行,上野智永,高井治, 齋藤永宏

    第72回応用物理学会学術講演会 

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    Event date: 2011.8

    Language:Japanese   Presentation type:Oral presentation (general)  

  625. ソリューションプラズマにより合成したAu-Agナノ粒子の構造特徴

    趙星彪,齋藤永宏,高井治

    第72回応用物理学会学術講演会 

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    Event date: 2011.8

    Language:Japanese   Presentation type:Oral presentation (general)  

  626. Hydrophobic Layered Double Hydroxide Film Formed on Magnesium Alloy toward Corrosion Protection International conference

    T. Ishizaki, K. Teshima, N. Saito, M. Sakamoto

    20th INTERNATIONAL MATERIALS RESEARCH CONGRESS (2011) 

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    Event date: 2011.8

    Language:English   Presentation type:Poster presentation  

  627. Optical Transparency and Hardness of Diamond-like Carbon Deposited by PECVD under Different Hydrogen Dilutions International conference

    S. Kariwa, C. Terashima, N. Saito, O. Takai

    The 8th Asian-European International Conference on Plasma Surface Engineering 

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    Event date: 2011.8

    Language:English   Presentation type:Poster presentation  

  628. Discharge Characteristics of Packed Bed HF Bipolar Liquid Solution Plasmas and Their Applications International conference

    Jen-Shih Chang, O.L. Helena Li, K. Urashima, J. Hieda, O. Takai, N. Saito

    20th International Symposium on Plasma Chemistry 

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    Event date: 2011.7

    Language:English   Presentation type:Oral presentation (general)  

  629. Application of Integrated Micro Solution Plasma to Decomposition of Organic Substances in Water International conference

    T. Shirafuji, J. Hieda, N. Saito, O. Takai

    20th International Symposium on Plasma Chemistry 

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    Event date: 2011.7

    Language:English   Presentation type:Oral presentation (general)  

  630. Studies of Structural Characteristics of Metal Nanoparticles Fabricated by a Glow Discharge in Aqueous International conference

    S.P. Cho, J. Hieda, N. Saito, O. Takai

    20th International Symposium on Plasma Chemistry 

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    Event date: 2011.7

    Language:English   Presentation type:Oral presentation (general)  

  631. Gaseous and Solid By-Products Generated from Thermal Plasma Cell-Phone Waste Treatment International conference

    O.L.Li, B. Ruj, J.S. Chang, N. Saito, O. Takai, T. Inaba and G. Pietsch

    Proc of International Symposium on Plasma Chemistry 

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    Event date: 2011.7

    Language:English   Presentation type:Oral presentation (general)  

  632. Wastewater, Drinking water and Sludge-water Treatment by Solution Plasma International conference

    O.L.Li, N.Saito, O.Takai

    Progress in new methods of water and waste water cleaning 

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    Event date: 2011.7

    Language:English   Presentation type:Oral presentation (invited, special)  

  633. Decane Reformation by a DC Electrohydrodyanmic Atomization International conference

    D. Brocilo, J.-S. Chang, D. Ewing, H. Hirata and S. Matsumoto,P. Fanson, O.L.Li, N.Saito, K.Urashima and O.Takai

    International Conference of Dielectric Liquid 

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    Event date: 2011.6

    Language:English   Presentation type:Oral presentation (general)  

  634. Rpidly Synthesis and Structural Characterization of Well-Defined Gold Clusters by Solution Plasma Sputtering International conference

    X. Hu, O. Takai, N. Saito

    Joint Conference of 5th International Conference on Science and Technology for Advanced Ceramics(STAC5) and 2nd International Conference on Advanced Materials Development and Integration of Novel Stuructured Metallic and Inorganic Materials(AMDI2) 

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    Event date: 2011.6

    Language:English   Presentation type:Poster presentation  

  635. Influence of Solution Plasma Characteristics on the Synthesized Au Nanoparticles International conference

    M.A. Bratescu, O. Takai, N. Saito

    Joint Conference of 5th International Conference on Science and Technology for Advanced Ceramics(STAC5) and 2nd International Conference on Advanced Materials Development and Integration of Novel Stuructured Metallic and Inorganic Materials(AMDI2) 

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    Event date: 2011.6

    Language:English   Presentation type:Oral presentation (general)  

  636. Fabrication of Surface Modification for the Selective Immobilization of Bacteria

    齋藤永宏

    Nano・Biomedicine Symposium 

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    Event date: 2011

    Language:English   Presentation type:Oral presentation (general)  

  637. ソリューションプラズマ方法による金属ナノ粒子の制御

    齋藤永宏

    第1回6大学6研究所連携プロジェクト公開討論会 

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    Event date: 2011

    Language:Japanese   Presentation type:Oral presentation (general)  

  638. ソリューションプラズマによる金ナノ粒子合成過程の反応モデル解析

    齋藤永宏

    表面技術協会第123回講演大会 

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    Event date: 2011

    Language:Japanese   Presentation type:Oral presentation (general)  

  639. ソリューションプラズマによるグラフェンの化学修飾

    齋藤永宏

    表面技術協会第123回講演大会 

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    Event date: 2011

    Language:Japanese   Presentation type:Oral presentation (general)  

  640. 非晶質炭素膜の電気化学特性に及ぼす水素含有量の影響

    齋藤永宏

    表面技術協会第123回講演大会 

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    Event date: 2011

    Language:Japanese   Presentation type:Oral presentation (general)  

  641. 透明炭素膜の色相制御とその物性評価

    齋藤永宏

    表面技術協会第123回講演大会 

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    Event date: 2011

    Language:Japanese   Presentation type:Oral presentation (general)  

  642. 液中プラズマによるAuナノ粒子担持カーボン合成とリチウム空気電池電極への応用

    齋藤永宏

    表面技術協会第123回講演大会 

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    Event date: 2011

    Language:Japanese   Presentation type:Oral presentation (general)  

  643. 分光法によるメソポーラスシリカ細孔内制御水の解析

    齋藤永宏

    表面技術協会第123回講演大会 

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    Event date: 2011

    Language:Japanese   Presentation type:Oral presentation (general)  

  644. A Novel Method for the Synthesis of Sphericaal Metal Particles by a Solution Plasma Process International conference

    N.SAITO

    3rd International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials (ISPlasma2011) 

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    Event date: 2011

    Language:English   Presentation type:Oral presentation (general)  

  645. Etchig of Diamond with Excess Boron Dopant Atoms Leads to Vertically Aligned Diamond Whiskers International conference

    N.SAITO

    3rd International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials (ISPlasma2011) 

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    Event date: 2011

    Language:English   Presentation type:Oral presentation (general)  

  646. A Novel Method for the Synthesis of Sphericaal Metal Particles by a Solution Plasma Process International conference

    N.SAITO

    3rd International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials (ISPlasma2011) 

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    Event date: 2011

    Language:English   Presentation type:Oral presentation (general)  

  647. Structural Characteristics of Au Nanoparticles Synthesized by Solution Plasma Process International conference

    N.SAITO

    3rd International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials (ISPlasma2011) 

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    Event date: 2011

    Language:English   Presentation type:Oral presentation (general)  

  648. Contribution of Speciatin of Aquaeous HAuCl4 during Nanoparticles Synthesis in Solution Plasma International conference

    N.SAITO

    3rd International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials (ISPlasma2011) 

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    Event date: 2011

    Language:English   Presentation type:Oral presentation (general)  

  649. Fabrication of Surface Modification for the Selective Immobilization of Bacteria International conference

    N.SAITO

    Nano Biomedicine Symposium 

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    Event date: 2011

    Language:English   Presentation type:Oral presentation (general)  

  650. Characteristics of Nitrogen-doped Carbon Films Grown by RF Plasma Enanced CVD International conference

    N.SAITO

    The 12th Internaional Symposium on Eco-Materials Processing and Design 

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    Event date: 2011

    Language:English   Presentation type:Oral presentation (general)  

  651. Synthesis of Spherical Carbon Nanoball and its Application for Air Electrodes in Lithium/Air Batteries International conference

    N.SAITO

    The 12th Internaional Symposium on Eco-Materials Processing and Design 

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    Event date: 2011

    Language:English   Presentation type:Oral presentation (general)  

  652. Degradation of Organic Pollutants in Solution Plasma: A Spectroscopic Analysis of the Decomposition Mechanism International conference

    N.SAITO

    The 12th Internaional Symposium on Eco-Materials Processing and Design 

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    Event date: 2011

    Language:English   Presentation type:Oral presentation (general)  

  653. Effect of Transition-metal Doping on the Optical Properties of Carbon Thin Films International conference

    N.SAITO

    The 12th Internaional Symposium on Eco-Materials Processing and Design 

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    Event date: 2011

    Language:English   Presentation type:Oral presentation (general)  

  654. Simple Fabrication of Spherical Metal Particles Using a Solution Plasma Process International conference

    N.SAITO

    The 12th Internaional Symposium on Eco-Materials Processing and Design 

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    Event date: 2011

    Language:English   Presentation type:Oral presentation (general)  

  655. Organic Functional Group Modification of Graphene by Solution Plasma International conference

    N.SAITO

    The 12th Internaional Symposium on Eco-Materials Processing and Design 

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    Event date: 2011

    Language:English   Presentation type:Oral presentation (general)  

  656. Fabrication of Boron-doped Diamond Nanograss Array by Oxygen Plasma Treatment International conference

    N.SAITO

    The 12th Internaional Symposium on Eco-Materials Processing and Design 

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    Event date: 2011

    Language:English   Presentation type:Oral presentation (general)  

  657. Spectroscopic Prove of a Water Cage Effect on the Synthesis of Gold Nanoparticles by Solution Plasma International conference

    N.SAITO

    The 12th Internaional Symposium on Eco-Materials Processing and Design 

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    Event date: 2011

    Language:English   Presentation type:Oral presentation (general)  

  658. AminoFunctionalizaion on SBA-15 Mesoporous Silica by Solution Plasma as the Active Site for Au Nanoparticles Growth International conference

    N.SAITO

    The 12th Internaional Symposium on Eco-Materials Processing and Design 

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    Event date: 2011

    Language:English   Presentation type:Oral presentation (general)  

  659. Spectroscopic Investigation of Bound Water in Mesoporous Silica International conference

    N.SAITO

    The 12th Internaional Symposium on Eco-Materials Processing and Design 

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    Event date: 2011

    Language:English   Presentation type:Oral presentation (general)  

  660. Structural Properties and Microsructures of SrTiO3/SrTi1-xNbxTiO3 Superlattices Grown by Ion Beam Deposition International conference

    N.SAITO

    The 12th Internaional Symposium on Eco-Materials Processing and Design 

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    Event date: 2011

    Language:English   Presentation type:Oral presentation (general)  

  661. Surface Modification of Mesoporous Silica by Solution Plasma Treatment International conference

    N.SAITO

    The 12th Internaional Symposium on Eco-Materials Processing and Design 

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    Event date: 2011

    Language:English   Presentation type:Oral presentation (general)  

  662. Fabrication of Au/Pt Bimetallic Nanoparticles by Solution Plasma International conference

    N.SAITO

    The 12th Internaional Symposium on Eco-Materials Processing and Design 

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    Event date: 2011

    Language:English   Presentation type:Oral presentation (general)  

  663. The Effect of Solution Plasma on the Crosslinking of Gelatin International conference

    N.SAITO

    Eleventh International Symposium on Biomimetic Materials Processing (BMMP-11) 

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    Event date: 2011

    Language:English   Presentation type:Oral presentation (general)  

  664. On The Possibility of Micro-solution Plasma for Materials Processing International conference

    N.SAITO

    Eleventh International Symposium on Biomimetic Materials Processing (BMMP-11) 

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    Event date: 2011

    Language:English   Presentation type:Oral presentation (general)  

  665. Anti-stain Surface Treatment for Housing Wet Area International conference

    N.SAITO

    Eleventh International Symposium on Biomimetic Materials Processing (BMMP-11) 

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    Event date: 2011

    Language:English   Presentation type:Oral presentation (general)  

  666. Spatial Structure of Cytoskeleton in Whole Mount Cell International conference

    N.SAITO

    Eleventh International Symposium on Biomimetic Materials Processing (BMMP-11) 

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    Event date: 2011

    Language:English   Presentation type:Oral presentation (general)  

  667. Adhesion of DLC Films on Polymer Materials International conference

    N.SAITO

    Eleventh International Symposium on Biomimetic Materials Processing (BMMP-11) 

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    Event date: 2011

    Language:English   Presentation type:Oral presentation (general)  

  668. Synthesis of Carbon Nanoball and its Application for Lithium/Air Batteries International conference

    N.SAITO

    Eleventh International Symposium on Biomimetic Materials Processing (BMMP-11) 

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    Event date: 2011

    Language:English   Presentation type:Oral presentation (general)  

  669. Microtribological Behavior of Poly Styrene Sulfonate Sodium Salt Brush International conference

    N.SAITO

    Eleventh International Symposium on Biomimetic Materials Processing (BMMP-11) 

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    Event date: 2011

    Language:English   Presentation type:Oral presentation (general)  

  670. Superhydrophobic Treatment at a Local Area Using Atmospheric Presssure Plasma Jet International conference

    N.SAITO

    Eleventh International Symposium on Biomimetic Materials Processing (BMMP-11) 

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    Event date: 2011

    Language:English   Presentation type:Oral presentation (general)  

  671. Contribution of Speciation of Aqueous HAuCl4 Solution on Gold Nanoparticles Synthesis in Solution Plasma International conference

    N.SAITO

    Eleventh International Symposium on Biomimetic Materials Processing (BMMP-11) 

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    Event date: 2011

    Language:English   Presentation type:Oral presentation (general)  

  672. Au Nanoparticles Growth on Amino-SBA-15 Mesoporous Silica Functionalized by Solution Plasma International conference

    N.SAITO

    Eleventh International Symposium on Biomimetic Materials Processing (BMMP-11) 

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    Event date: 2011

    Language:English   Presentation type:Oral presentation (general)  

  673. Synthesis of Solica Composite Materials Using Solution Plasma International conference

    N.SAITO

    Eleventh International Symposium on Biomimetic Materials Processing (BMMP-11) 

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    Event date: 2011

    Language:English   Presentation type:Oral presentation (general)  

  674. Synthesis and Characterization of CNBs by Infrared Thermal CVD International conference

    N.SAITO

    Eleventh International Symposium on Biomimetic Materials Processing (BMMP-11) 

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    Event date: 2011

    Language:English   Presentation type:Oral presentation (general)  

  675. Surface Modification of Nano-carbon Materials by Solution Plasma Processing International conference

    N.SAITO

    Eleventh International Symposium on Biomimetic Materials Processing (BMMP-11) 

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    Event date: 2011

    Language:English   Presentation type:Oral presentation (general)  

  676. Infrared Spectroscopic Analysis of Bound Water in Mesoporous Silica International conference

    N.SAITO

    Eleventh International Symposium on Biomimetic Materials Processing (BMMP-11) 

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    Event date: 2011

    Language:English   Presentation type:Oral presentation (general)  

  677. Hue Control of Transparent Amorphous Hydrogenated Carbon Thin Film Induced by Transition Metal Doping International conference

    N.SAITO

    Eleventh International Symposium on Biomimetic Materials Processing (BMMP-11) 

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    Event date: 2011

    Language:English   Presentation type:Oral presentation (general)  

  678. Controllable Synthesis of Spherical Particles Using a Solution Plasma Process International conference

    N.SAITO

    Eleventh International Symposium on Biomimetic Materials Processing (BMMP-11) 

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    Event date: 2011

    Language:English   Presentation type:Oral presentation (general)  

  679. Optical diagnostics of solution plasma for nanomaterials processing International conference

    N.SAITO

    The 40th Korean Vacuum Society's liquid plasma session 

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    Event date: 2011

    Language:English   Presentation type:Oral presentation (general)  

  680. 透明炭素膜の色相制御とその物性評価

    齋藤永宏

    電気化学会第78回大会 

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    Event date: 2011

    Language:Japanese   Presentation type:Oral presentation (general)  

  681. CVD法によって作製した非晶質炭素材の電気化学特性に及ぼす窒素含有量の影響

    齋藤永宏

    第58回応用物理学関係連合講演会 

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    Event date: 2011

    Language:Japanese   Presentation type:Oral presentation (general)  

  682. ソリューションプラズマによるAuナノ粒子担持カーボンの合成とリチウム空気電池への応用

    齋藤永宏

    第58回応用物理学関係連合講演会 

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    Event date: 2011

    Language:Japanese   Presentation type:Oral presentation (general)  

  683. 遷移金属ドープによる透明水素化アモルファスカーボン膜の色相制御と機械的特性

    齋藤永宏

    第58回応用物理学関係連合講演会 

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    Event date: 2011

    Language:Japanese   Presentation type:Oral presentation (general)  

  684. 分光法によるメソポーラスシリカ細孔内制御水の調査

    齋藤永宏

    第58回応用物理学関係連合講演会 

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    Event date: 2011

    Language:Japanese   Presentation type:Oral presentation (general)  

  685. ソリューションプラズマによる金ナノ粒子合成における水のかご効果の分析

    齋藤永宏

    第58回応用物理学関係連合講演会 

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    Event date: 2011

    Language:Japanese   Presentation type:Oral presentation (general)  

  686. CVD法によって作製した非晶質炭素材の電気化学特性に及ぼす窒素含有量の影響

    齋藤永宏

    第58回応用物理学関係連合講演会 

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    Event date: 2011

    Language:Japanese   Presentation type:Oral presentation (general)  

  687. ソリューションプラズマにより合成したAuナノ粒子のHRTEM評価

    齋藤永宏

    第58回応用物理学関係連合講演会 

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    Event date: 2011

    Language:Japanese   Presentation type:Oral presentation (general)  

  688. 集積化マイクロソリューションプラズマの生成

    齋藤永宏

    第58回応用物理学関係連合講演会 

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    Event date: 2011

    Language:Japanese   Presentation type:Oral presentation (general)  

  689. ソリューションプラズマを用いた多層カーボンナノチューブのニトロ化処理とアミノ化処理プロセス

    齋藤永宏

    第58回応用物理学関係連合講演会 

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    Event date: 2011

    Language:Japanese   Presentation type:Oral presentation (general)  

  690. 赤外加熱CVDにより合成したCNBの特性評価

    齋藤永宏

    第58回応用物理学関係連合講演会 

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    Event date: 2011

    Language:Japanese   Presentation type:Oral presentation (general)  

  691. Attenuated total reflectance spectroscopy of coumarin organosilane molecules adsorbed on a silica surface International conference

    M.A. Bratescu, N. Saito, O. Takai

    Pacifichem 2010 

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    Event date: 2010.12

    Language:English   Presentation type:Oral presentation (general)  

    Country:United States  

  692. In-situ Monitoring of Organic Pollutants Degradation in Pulsed Plasma by Coherent anti-Stokes Raman Spectroscopy International conference

    M.A. Bratescu, N. Saito, O. Takai

    American Vacuum Society, 57th International Symposium 

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    Event date: 2010.10

    Language:English   Presentation type:Poster presentation  

    Country:United States  

  693. Contribution of Speciation of Aquaeous HAuCl4 during Nanoparticles Synthesis in Solution Plasma International conference

    M.A. Bratescu, O. Takai, N. Saito

    20th International Symposium on Plasma Chemistry, ISPC20 - 2010 

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    Event date: 2010.7

    Language:English   Presentation type:Poster presentation  

    Country:United States  

  694. Creating biointerface on polymer by Plasma-Initiated Graft Polymerization

    齋藤永宏

    第20回日本MRS学術シンポジウム 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (general)  

  695. ソリューションプラズマ反応場と機能化ナノ粒子合成

    平成21年度 日本金属学会・日本鉄鋼協会東海支部学術討論会 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  696. グリーンビークル研究開発拠点構想

    社団法人 日本原子力学会中部支部「先端技術と原子力」研究専門委員会 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  697. ソリューションプラズマ反応場と材料合成

    齋藤永宏

    第53回放射線化学討論会 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

  698. ソリューションプラズマ反応場における微細気泡の効果とナノ材料表面処理

    齋藤永宏

    日本学術振興会 プラズマ材料科学第153委員会 第96回研究会 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (general)  

  699. ソリューションプラズマ反応と材料合成

    齋藤永宏

    第26回ソフト溶液プロセス研究会講演会 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

  700. 新しい反応場を用いた表面機能化プロセス~ソリューションプラズマから自己組織化まで~

    齋藤永宏

    第51回CVD研究会「第21回夏季セミナー」 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

  701. ソリューションプラズマによる逆ミセル系溶液中からの金ナノ粒子の合成と分散特性

    齋藤永宏

    表面技術協会第122回講演大会 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (general)  

  702. 分光法によるメソポーラスシリカ内制限水の調査

    齋藤永宏

    第20回日本MRS学術シンポジウム 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (general)  

  703. Organic Modification of Graphene by SPP

    齋藤永宏

    第20回日本MRS学術シンポジウム 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (general)  

  704. 細菌増殖に及ぼすナノ粒子の影響

    齋藤永宏

    第20回日本MRS学術シンポジウム 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (general)  

  705. 細菌の固定化に適したマイクロパターン表面修飾

    齋藤永宏

    第20回日本MRS学術シンポジウム 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (general)  

  706. 炭化水素を原料とした窒素ドープカーボン膜の合成と特性評価

    齋藤永宏

    第20回日本MRS学術シンポジウム 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (general)  

  707. カーボンナノボールを用いたリチウム空気電池電極の評価

    齋藤永宏

    第20回日本MRS学術シンポジウム 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (general)  

  708. 大気圧プラズマジェットを用いた超はっ水膜の形成

    齋藤永宏

    第20回日本MRS学術シンポジウム 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (general)  

  709. 大気圧リモートプラズマによる高分子表面改質における酸素の影響

    齋藤永宏

    第20回日本MRS学術シンポジウム 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (general)  

  710. 遷移金属ドープによる透明炭素薄膜の色相制御

    齋藤永宏

    第20回日本MRS学術シンポジウム 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (general)  

  711. 高分子電解質ブラシ表面の摩擦特性

    齋藤永宏

    平成22年度表面技術若手研究者・技術者研究交流発表会 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (general)  

  712. 大気圧プラズマジェットを用いた超はっ水膜の形成

    齋藤永宏

    平成22年度表面技術若手研究者・技術者研究交流発表会 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (general)  

  713. リモート大気圧プラズマを用いたPET表面改質における酸素の影響

    齋藤永宏

    平成22年度表面技術若手研究者・技術者研究交流発表会 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (general)  

  714. 走査レーザー誘起蛍光法による乾式/湿式微量蛍光物質の表面分布分析

    齋藤永宏

    平成22年度表面技術若手研究者・技術者研究交流発表会 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (general)  

  715. 高分子電解質ブラシ表面の微視的摩擦特性

    齋藤永宏

    第20回学生による材料フォーラム 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (general)  

  716. 大気圧プラズマジェットを用いた超はっ水膜の形成

    齋藤永宏

    第20回学生による材料フォーラム 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (general)  

  717. 大気圧リモートプラズマを用いた高分子表面改質における酸素の影響

    齋藤永宏

    第20回学生による材料フォーラム 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (general)  

  718. 走査レーザー誘起蛍光法による蛍光物質の表面分布分析

    齋藤永宏

    第20回学生による材料フォーラム 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (general)  

  719. 赤外分光法によるメソポーラスシリカ細孔内制限水の解析

    齋藤永宏

    名古屋大学若手女性研究者サイエンスフォーラム 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (general)  

  720. Fabrication of transparent DLC with high adhesion on polymer materials by SiOx incorporation and plasma pre-treatment

    齋藤永宏

    Nagoya Univ.-Tsinghua Univ.-Toyota Motor Corp.-Hokkaido Univ. Joint Symposium 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (general)  

  721. 自己組織化単分子膜 (SAM) 形成技術による機能性織物の開発

    齋藤永宏

    平成22年度繊維学会秋季研究発表会 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (general)  

  722. 赤外分光法によるメソポーラスシリカ細孔内制限水の解析

    齋藤永宏

    日本金属学会2010年秋期(第147回)大会 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (general)  

  723. 高分子電解質ブラシ表面の摩擦特性評価

    齋藤永宏

    日本金属学会2010年秋期(第147回)大会 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (general)  

  724. ソリューションプラズマプロセスによる金クラスターの合成

    齋藤永宏

    日本金属学会2010年秋期(第147回)大会 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (general)  

  725. カーボンナノボールを用いたリチウム/空気電池用電極の作製

    齋藤永宏

    日本金属学会2010年秋期(第147回)大会 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (general)  

  726. ソリューションプラズマ方法によりAu-Pt金属ボールへの合成

    齋藤永宏

    日本金属学会2010年秋期(第147回)大会 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (general)  

  727. ソリューションプラズマを用いた 多層カーボンナノチューブの表面改質とフィラー特性

    齋藤永宏

    第71回応用物理学会学術講演会 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (general)  

  728. 赤外加熱CVDを用いたCNBの合成と微細構造評価

    齋藤永宏

    第71回応用物理学会学術講演会 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (general)  

  729. ポリマー基板上DLC膜のシリコン・酸素ドープによる密着性向上

    齋藤永宏

    第71回応用物理学会学術講演会 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (general)  

  730. 大気圧プラズマを用いたグラフト重合・架橋複合処理による持続的親水性表面の形成

    齋藤永宏

    第71回応用物理学会学術講演会 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (general)  

  731. 気液混合相プラズマジェットによるはっ水膜形成

    齋藤永宏

    第71回応用物理学会学術講演会 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (general)  

  732. 走査レーザー誘起蛍光法による微量蛍光物質の表面分布分析

    齋藤永宏

    第71回応用物理学会学術講演会 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (general)  

  733. ソリューションプラズマを用いた金ナノ微粒子の粒径制御

    齋藤永宏

    第71回応用物理学会学術講演会 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (general)  

  734. 逆ミセルを用いたソリューションプラズマにより合成したAuナノ粒子の分散特性および構造特性の評価

    齋藤永宏

    第71回応用物理学会学術講演会 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (general)  

  735. ソリューションプラズマ中での金ナノ粒子合成過程の分析

    齋藤永宏

    第71回応用物理学会学術講演会 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (general)  

  736. コヒーレント・アンチストークス・ラマン分光法を用いたソリューションプラズマ中での金ナノ粒子合成過程の分析

    齋藤永宏

    資源・素材関係学協会合同秋季大会 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (general)  

  737. カーボン材料のソリューションプラズマ処理とプラスチック複合材料への効果

    齋藤永宏

    資源・素材関係学協会合同秋季大会 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (general)  

  738. 赤外加熱を用いたCNB合成と特性評価

    齋藤永宏

    資源・素材関係学協会合同秋季大会 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (general)  

  739. 触媒特性発現をめざした窒素ドープカーボン膜の合成

    齋藤永宏

    表面技術協会第122回講演大会 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (general)  

  740. ソリューションプラズマによるシリカゾル中での金ナノ粒子の合成

    齋藤永宏

    表面技術協会第122回講演大会 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (general)  

  741. ソリューションプラズマによる化学修飾グラフェンシートの合成と評価

    齋藤永宏

    表面技術協会第122回講演大会 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (general)  

  742. 遷移金属ドープによる透明DLC膜の色相制御

    齋藤永宏

    表面技術協会第122回講演大会 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (general)  

  743. 大気圧プラズマ/グラフト重合による高分子表面への持続的親水性の付与

    齋藤永宏

    表面技術協会第122回講演大会 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (general)  

  744. 走査レーザー誘起蛍光法による乾式/湿式蛍光物質の面分析

    齋藤永宏

    表面技術協会第122回講演大会 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (general)  

  745. 大気圧プラズマジェットを用いたはっ水表面の形成

    齋藤永宏

    表面技術協会第122回講演大会 

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    Event date: 2010

    Language:Japanese   Presentation type:Oral presentation (general)  

  746. Attenuated total reflectance spectroscopy of coumarin organosilane molecules adsorbed on a silica surface International conference

    N.SAITO

    Pacifichem 2010 

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    Event date: 2010

    Language:English   Presentation type:Oral presentation (general)  

  747. Structural characteristics of Au nanoparticles synthesized by Solution Plasma Process International conference

    N.SAITO

    International Union of Materials Research Societies 

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    Event date: 2010

    Language:English   Presentation type:Oral presentation (general)  

  748. Organic modification of graphene sheet by Solution Plasma International conference

    N.SAITO

    International Union of Materials Research Societies 

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    Event date: 2010

    Language:English   Presentation type:Oral presentation (general)  

  749. Chemical Synthesis and Modification of Graphene Sheet to Improve Electron Transfer of Battery Anode International conference

    N.SAITO

    International Union of Materials Research Societies 

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    Event date: 2010

    Language:English   Presentation type:Oral presentation (general)  

  750. Water-repellent thin film deposition using a gas-liquid mixed-phase plasma jet International conference

    N.SAITO

    63rd Annual Gaseous Electronics Conference and 7th International Conference on Reactive Plasmas 

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    Event date: 2010

    Language:English   Presentation type:Oral presentation (general)  

  751. Differences in nano structure on PET films formed with low-pressure and atmospheric pressure plasmas International conference

    N.SAITO

    63rd Annual Gaseous Electronics Conference and 7th International Conference on Reactive Plasmas 

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    Event date: 2010

    Language:English   Presentation type:Oral presentation (general)  

  752. In-situ Monitoring of Organic Pollutants Degradation in Pulsed Plasma by Coherent anti-Stokes Raman Spectroscopy International conference

    N.SAITO

    AVS 57th International Symposium & Exhibition 

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    Event date: 2010

    Language:English   Presentation type:Oral presentation (general)  

  753. LIF Surface Distribution Analysis of Minute Amounts of Fluorescent Substance International conference

    N.SAITO

    Asia Pacific Interfinish 2010 

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    Event date: 2010

    Language:English   Presentation type:Oral presentation (general)  

  754. Synthesis of Well-Defined Carbon Nanoballs Using Thermal CVD by Infrared Heating International conference

    N.SAITO

    Asia Pacific Interfinish 2010 

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    Event date: 2010

    Language:English   Presentation type:Oral presentation (general)  

  755. Fabrication and Characterization of Nano-carbon Material Reinforced Plastic by Solution Plasma Processing International conference

    N.SAITO

    Asia Pacific Interfinish 2010 

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    Event date: 2010

    Language:English   Presentation type:Oral presentation (general)  

  756. Formation of Size Regulated Platinum Nanoparticles synthesized by Solution Plasma Process International conference

    N.SAITO

    AVS 57th International Symposium & Exhibition 

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    Event date: 2010

    Language:English   Presentation type:Oral presentation (general)  

  757. Amino Functionalization on SBA-15 Mesoporous Silica using Solution Plasma and its ability for Gold Nanoparticles Growth International conference

    N.SAITO

    2010 International Symposium on Micro-Nano Mechatronics and Human Science (From Mirco & NanoScale Systems to Robotics & Mechatronics Systems) 

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    Event date: 2010

    Language:English   Presentation type:Oral presentation (general)  

  758. Adsorption Behavior of Human Serum Albumin and Fibrinogen onto Poly(styrene sulfonate) Brush International conference

    N.SAITO

    2010 International Symposium on Micro-Nano Mechatronics and Human Science (From Mirco & NanoScale Systems to Robotics & Mechatronics Systems) 

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    Event date: 2010

    Language:English   Presentation type:Oral presentation (general)  

  759. Synthesis of Silica Composite Materials with Solution Plasma International conference

    N.SAITO

    2010 International Symposium on Micro-Nano Mechatronics and Human Science (From Mirco & NanoScale Systems to Robotics & Mechatronics Systems) 

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    Event date: 2010

    Language:English   Presentation type:Oral presentation (general)  

  760. Growth and Chatacterizations of Heteroepitaxial Nb-doped SrTiO3 Thin Films by Ar/O2 Ion Beam Deposition International conference

    N.SAITO

    2010 International Symposium on Micro-Nano Mechatronics and Human Science (From Mirco & NanoScale Systems to Robotics & Mechatronics Systems) 

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    Event date: 2010

    Language:English   Presentation type:Oral presentation (general)  

  761. Adhesion properties of transparent DLC films on polymer substrates International conference

    N.SAITO

    The 1st Korea-Japan Symposium on Surface Technology 

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    Event date: 2010

    Language:English   Presentation type:Oral presentation (general)  

  762. Studies of Structural and Dispersal Characteristics of characteristics of Au nanoparticles synthesized by Solution Plasma Process International conference

    N.SAITO

    The 1st Korea-Japan Symposium on Surface Technology 

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    Event date: 2010

    Language:English   Presentation type:Oral presentation (general)  

  763. UV-Attenuated total reflectance spectroscopy: a powerful tool for interfacial processes analysis International conference

    N.SAITO

    The 1st Korea-Japan Symposium on Surface Technology 

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    Event date: 2010

    Language:English   Presentation type:Oral presentation (general)  

  764. Infrared Spectroscopic Investigation of Water Confined in Mesoporous Silica International conference

    N.SAITO

    2011 MRS Fall Meeting 

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    Event date: 2010

    Language:English   Presentation type:Oral presentation (general)  

  765. Simultaneous Ag Nanoparticles Impregnation on Mesoporous Silica and Organic Template Removal using Solution Plasma International conference

    N.SAITO

    3rd International Conference on Advanced Nano Materials (ANM2010) 

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    Event date: 2010

    Language:English   Presentation type:Oral presentation (general)  

  766. Nanostructure and Surface function for Self-assembly International conference

    N.SAITO

    International Conference on Electronics Packaging (ICEP2010) 

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    Event date: 2010

    Language:English   Presentation type:Oral presentation (invited, special)  

  767. Solution Plasma Processing for Nanomaterials Cold Plasma in Water International conference

    N.SAITO

    The 24th Symposium on Plasma Physics and Technology 

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    Event date: 2010

    Language:English   Presentation type:Oral presentation (invited, special)  

  768. Surface characteristics of super hydrophilic polyelectrolyte bush International conference

    N.SAITO

    6th Coatings Science International 2010 

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    Event date: 2010

    Language:English   Presentation type:Oral presentation (invited, special)  

  769. Solution Plasma Processing Cold Plasma in Water International conference

    N.SAITO

    China-Japan-Korea 2010 Strategic Seminar on New Materials (CJK-SSNM 2010) 

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    Event date: 2010

    Language:English   Presentation type:Oral presentation (invited, special)  

  770. Nanoparticles synthesis through solution plasma processing International conference

    N.SAITO

    Visual-JW2010 

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    Event date: 2010

    Language:English   Presentation type:Oral presentation (invited, special)  

  771. Creation of Super Hydrophobic Inner Surface of Narrow Tubes by ICP-CVD Using Trimethylmethoxysilane International conference

    N.SAITO

    International Conference on Electronics Packaging (ICEP2010) 

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    Event date: 2010

    Language:English   Presentation type:Oral presentation (general)  

  772. Modification of Self-Organized Chemical Bonding Structure of Hydrogenated Amorphous Carbon using Si Doping International conference

    N.SAITO

    International Conference on Electronics Packaging (ICEP2010) 

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    Event date: 2010

    Language:English   Presentation type:Oral presentation (general)  

  773. Solution Plasma Processing of Nano Carbon Materials and Its Effects on Their Self-Organized Dispersion in Plastic Materials International conference

    N.SAITO

    International Conference on Electronics Packaging (ICEP2010) 

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    Event date: 2010

    Language:English   Presentation type:Oral presentation (general)  

  774. Progress in Biomimetic Materials Processing International conference

    N.SAITO

     More details

    Event date: 2010

    Language:English   Presentation type:Oral presentation (general)  

  775. Solution Plasma Processing (SPP) of Materials International conference

    N.SAITO

     More details

    Event date: 2010

    Language:English   Presentation type:Oral presentation (general)  

  776. One Batch Process for Ag Nanoparticles Impregnation and Template Removal on Mesoporous Silica International conference

    N.SAITO

    2nd Japan-Korea Joint Forum on Sol-Gel Science and Technology 

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    Event date: 2010

    Language:English   Presentation type:Oral presentation (general)  

  777. Morphology of HF Bipolar Liquid Solution Plasmas: Effect of Liquid Conductivity and Electrode Gap Distances International conference

    N.SAITO

    10th Asia-Pasific Conference on Plasma Science and Technology (APCPST) and 23th Symposium on Plasma Science for Materials (SPSM) 

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    Event date: 2010

    Language:English   Presentation type:Oral presentation (general)  

  778. Decomposition of Organic Materials using Dielectric Barrier Discharges with Porous Dielectric Electrodes International conference

    N.SAITO

    10th Asia-Pasific Conference on Plasma Science and Technology (APCPST) and 23th Symposium on Plasma Science for Materials (SPSM) 

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    Event date: 2010

    Language:English   Presentation type:Oral presentation (general)  

  779. Structure modification of Si doped DLC films using oxygen doping and its adhesion property on polycarbonate substrate International conference

    N.SAITO

    10th Asia-Pasific Conference on Plasma Science and Technology (APCPST) and 23th Symposium on Plasma Science for Materials (SPSM) 

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    Event date: 2010

    Language:English   Presentation type:Oral presentation (general)  

  780. Iron redox reactions in liquid plasma during Fe2O3 nanostructures synthesis International conference

    N.SAITO

    10th Asia-Pasific Conference on Plasma Science and Technology (APCPST) and 23th Symposium on Plasma Science for Materials (SPSM) 

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    Event date: 2010

    Language:English   Presentation type:Oral presentation (general)  

  781. Solution Plasma for template removal in Mesoporous Silica: pH and Discharge Time-Varying Characteristics International conference

    N.SAITO

    10th Asia-Pasific Conference on Plasma Science and Technology (APCPST) and 23th Symposium on Plasma Science for Materials (SPSM) 

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    Event date: 2010

    Language:English   Presentation type:Oral presentation (general)  

  782. Adhesion improvement of DLC films on polymer materials via silicon/oxygen doping and plasma-pretreatments International conference

    N.SAITO

    Diamond 2010 (21st European Conference on Diamond, Diamond- Like Materials, Carbon Nanotubes, and Nitrides) 

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    Event date: 2010

    Language:English   Presentation type:Oral presentation (general)  

  783. 地球環境の現況と環境技術イノベーションの必要性

    車載半導体技術セミナー 

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    Event date: 2009.12

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  784. Surface modification of iron oxide/silica core/shell nanoparticles with poly(styrene sulfonate) brush for cells adhesion International conference

    M.A. Bratescu, N. Saito, O. Takai

    2009 MRS Fall Meeting 

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    Event date: 2009.12

    Language:English   Presentation type:Poster presentation  

    Country:United States  

  785. Spectroscopic investigations of chemical reactions in liquids plasma International conference

    C. Miron, M. Bratescu, N. Saito, O. Takai

    International Symposium on Plasma Chemistry19(ISPC19) 

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    Event date: 2009.7 - 2009.8

    Language:English   Presentation type:Poster presentation  

    Country:Germany  

  786. Kinetics analysis of iron ion reduction in liquid plasma International conference

    M.A. Bratescu, N. Saito, O. Takai

    International Symposium on Plasma Chemistry19(ISPC19) 

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    Event date: 2009.7 - 2009.8

    Language:English   Presentation type:Poster presentation  

    Country:Germany  

  787. Comparison between Fe/silica nanostructures prepared via a liquid plasma process and a sonication method International conference

    M.A. Bratescu, N. Saito, O. Takai

    PSS-2009/SPP-26 

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    Event date: 2009.2

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  788. XAFS Analysis of Gold Nanoparticle Synthesized by Solution Plasma Process International conference

    The 9th Korea-Japan Workshop 

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    Event date: 2009

    Language:English  

  789. Polyamide 6(PA6)モノマーグラフト化 CNT/PA6 コンポジット材料の開発と評価

    2009年秋季 秋期(第145回)大会 (日本金属学会) 

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    Event date: 2009

    Language:Japanese  

  790. プラズマ CVD を用いた単結晶 ZnO 薄膜の作製

    2009年秋季 秋期(第145回)大会 (日本金属学会) 

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    Event date: 2009

    Language:Japanese  

  791. 液中プラズマによるZr系化合物ナノ粒子の合成

    第120回講演大会 

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    Event date: 2009

    Language:Japanese  

  792. イオン強度の異なる溶液中での高分子電解質ブラシ表面へのタンパク質の吸着挙動

    第120回講演大会 

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    Event date: 2009

    Language:Japanese  

  793. 固体表面へのペプチド吸着に及ぼすアミノ酸配列の影響

    第120回講演大会 

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    Event date: 2009

    Language:Japanese  

  794. ソリューションによる酸化物系材料合成経路の探索

    第120回講演大会 

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    Event date: 2009

    Language:Japanese  

  795. ソリューションプラズマを用いたナノフィラーの表面改質によるポリアミド6/ナノフィラー複合材料の機械的特性の向上

    第120回講演大会 

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    Event date: 2009

    Language:Japanese  

  796. 大気圧プラズマ前処理法を用いた高分子材料の超はっ水化

    第120回講演大会 

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    Event date: 2009

    Language:Japanese  

  797. Oxygen Gas Barrier Properties Related with Structure of Hydrogenated Amorphous Carbon Films by ICP-CVD International conference

    The 31st International Symposium on Dry Process (DPS2009) 

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    Event date: 2009

    Language:English  

  798. 液中プラズマを用いた金ナノロッド合成における保護剤濃度の影響

    第40回中部科学関係学協会支部連合秋季大会 

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    Event date: 2009

    Language:Japanese  

  799. Single Crystal Mesoporous Silica using Solution Plasma Process for Template Removal

    Ninth International Symposium on Biomimetic Materials Processing (BMMP-9) 

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    Event date: 2009

    Language:English   Presentation type:Poster presentation  

  800. Anti-bacterial Glaze of Sanitary ware Containing Silver Ion

    Ninth International Symposium on Biomimetic Materials Processing (BMMP-9) 

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    Event date: 2009

    Language:English   Presentation type:Poster presentation  

  801. Time-resolved optical spectroscopy of electrical discharges in bubbled water

    Ninth International Symposium on Biomimetic Materials Processing (BMMP-9) 

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    Event date: 2009

    Language:English   Presentation type:Poster presentation  

  802. Added Salt Effect on a Fibrinogen Immobilization Kinetics at a Polelectrolyte Brush

    Ninth International Symposium on Biomimetic Materials Processing (BMMP-9) 

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    Event date: 2009

    Language:English   Presentation type:Poster presentation  

  803. Controlling Particle Size of Carbon Nanoballs by Changing Synthesis Condition

    Ninth International Symposium on Biomimetic Materials Processing (BMMP-9) 

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    Event date: 2009

    Language:English   Presentation type:Poster presentation  

  804. Roughness modification of metallic surfaces treated by a pulsed water discharge

    Ninth International Symposium on Biomimetic Materials Processing (BMMP-9) 

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    Event date: 2009

    Language:English   Presentation type:Poster presentation  

  805. Electrode erosion in Solution Plasma Process

    Ninth International Symposium on Biomimetic Materials Processing (BMMP-9) 

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    Event date: 2009

    Language:English   Presentation type:Poster presentation  

  806. 大気圧プラズマ処理による天然紙表面への自己組織化単分子膜の形成

    プラズマ科学シンポジウム2009/第26回プラズマプロセシング研究会 

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    Event date: 2009

    Language:Japanese   Presentation type:Poster presentation  

  807. 液中放電内部における水素解離度の分光学的計測

    ミロンカメリア、ブラテスク マリア アントアネタ、齋藤永宏、高井 治

    プラズマ科学シンポジウム2009/第26回プラズマプロセシング研究会 

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    Event date: 2009

    Language:Japanese   Presentation type:Poster presentation  

  808. 液中プラズマ法と超音波法によるFe/silicaナノ構造体の作製とその物性評価

    ブラテスク マリア アントアネタ、齋藤永宏、高井 治

    プラズマ科学シンポジウム2009/第26回プラズマプロセシング研究会 

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    Event date: 2009

    Language:Japanese   Presentation type:Poster presentation  

  809. 液中プラズマが及ぼす銅およびステンレス電極表面への影響

    アペトロアエイ ニコライ、藤田翔平、齋藤永宏、高井 治

    プラズマ科学シンポジウム2009/第26回プラズマプロセシング研究会 

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    Event date: 2009

    Language:Japanese   Presentation type:Poster presentation  

  810. 自己組織化単分子膜を用いた大気圧プロセスによる紙へのはっ水性付与技術の開発

    鈴木和也、村上達洋、石黒義和、山本泰望、竹内 正、下川原厚男、石崎貴裕、齋藤永宏、高井  治<BR>

    表面技術協会 第119回講演大会 

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    Event date: 2009

    Language:Japanese   Presentation type:Poster presentation  

  811. ソリューションプラズマによるFe/SiO2コアシェルナノ粒子の合成

    稗田純子、ブラテスク マリア、齋藤永宏、高井 治

    表面技術協会 第119回講演大会 

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    Event date: 2009

    Language:Japanese  

  812. Pt/CNB(白金ナノ粒子担持カーボンナノボール)合成条件と触媒活性

    市野善道、齋藤永宏高井 治

    表面技術協会 第119回講演大会 

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    Event date: 2009

    Language:Japanese   Presentation type:Poster presentation  

  813. ポリマー上のDLC成膜

    白 相珉、齋藤永宏高井 治

    表面技術協会 第119回講演大会 

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    Event date: 2009

    Language:Japanese   Presentation type:Poster presentation  

  814. ソリューションプラズマ・カルシネーションによるメソポーラスシリカの合成

    齋藤永宏、POOTAWANG Panuphong, 高井 治

    表面技術協会 第119回講演大会 

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    Event date: 2009

    Language:Japanese  

  815. Advanced solution plasma processing ~Cold Plasma in Water ~<BR> International conference

    International Conference on Plasma Surface Engineering (AEPSE2009) 

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    Event date: 2009

    Language:English  

  816. ソリューションプラズマを用いたナノ粒子触媒の合成

    第2回 名古屋大学 材料バックキャストテクノロジーシンポジウム<BR>「次世代グリーンビークルに向けた材料テクノロジーの展開」 

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    Event date: 2009

    Language:Japanese  

  817. ソリューションプラズマ

    第50回 真空に関する連合講演会 

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    Event date: 2009

    Language:Japanese  

  818. ソリューションプラズマによるナノ粒子の合成

    第40回中部科学関係学協会支部連合秋季大会 

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    Event date: 2009

    Language:Japanese  

  819. Effect of Nano-Bubbles on Generation of Solution Plasma International conference

    22nd Symposium on Plasma Science for Materials (SPSM-22 第22回プラズマ材料科学シンポジウム) 

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    Event date: 2009

    Language:English  

  820. Creation of Multi-Functional Biointerface Using by<BR>Plasma-Processing International conference

    International Conference on Materials for Advanced Technologies (ICMAT 2009), International Union of Materials Research Societies-<BR>International Conference in Asia 2009 (IUMRS-ICA 2009) 

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    Event date: 2009

    Language:English  

  821. Solution plasma fabrication of Au/Pt bimetallic nanoparticles International conference

    International Symposium on Plasma Chemistry19(ISPC19) 

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    Event date: 2009

    Language:English  

  822. Kinetics analysis of iron ion reduction in liquid plasma International conference

    International Symposium on Plasma Chemistry19(ISPC19) 

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    Event date: 2009

    Language:English  

  823. ソリューションプラズマによるPdナノ粒子の合成

    第120回講演大会 

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    Event date: 2009

    Language:Japanese  

  824. 液中プラズマを用いたPd ナノ粒子合成におけるpHの影響

    第40回中部科学関係学協会支部連合秋季大会 

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    Event date: 2009

    Language:Japanese  

  825. Needle Electrodes Erosion in Water Plasma Discharge International conference

    The 9th Korea-Japan Workshop 

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    Event date: 2009

    Language:English  

  826. Oxidizing potential of liquid plasma discharge - OH radical in plasma and liquid solution International conference

    International Symposium on Plasma Chemistry19(ISPC19) 

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    Event date: 2009

    Language:English  

  827. XAFS Analysis of Gold Nanoparticle Synthesized in Solution Plasma International conference

    International Symposium on Plasma Chemistry19 (ISPC-19) Pre-Symposium 

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    Event date: 2009

    Language:English  

  828. Time and pH Dependence in Template Removal from Single Crystal Mesoporous Silica using Solution Plasma Process International conference

    International Symposium on Plasma Chemistry19 (ISPC-19) Pre-Symposium 

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    Event date: 2009

    Language:English  

  829. Gas barrier properties of carbon films formed by plasma processing<BR>on polymer material International conference

    International Symposium on Plasma Chemistry19 (ISPC-19) Pre-Symposium 

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    Event date: 2009

    Language:English  

  830. Preparation and Characterization of Nanocomposite Materials containing Nanofillers Modified by Solution Plasma International conference

    22nd Symposium on Plasma Science for Materials (SPSM-22 第22回プラズマ材料科学シンポジウム) 

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    Event date: 2009

    Language:English  

  831. Primary Physical Factor of Solution Plasma reaction field International conference

    22nd Symposium on Plasma Science for Materials (SPSM-22 第22回プラズマ材料科学シンポジウム) 

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    Event date: 2009

    Language:English  

  832. Improved oxygen gas transmission of polymer material by DLC coating International conference

    22nd Symposium on Plasma Science for Materials (SPSM-22 第22回プラズマ材料科学シンポジウム) 

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    Event date: 2009

    Language:English  

  833. Wear and anticorrosion characteristics of DLC films prepared by pulse plasma CVD International conference

    22nd Symposium on Plasma Science for Materials (SPSM-22 第22回プラズマ材料科学シンポジウム) 

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    Event date: 2009

    Language:English  

  834. Time-varying Characteristic in Template Removal from Single Crystal Mesoporous Silica by Solution Plasma International conference

    International Conference on Materials for Advanced Technologies (ICMAT 2009), International Union of Materials Research Societies-<BR>International Conference in Asia 2009 (IUMRS-ICA 2009) 

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    Event date: 2009

    Language:English  

  835. Effects of Pulse Bias on Optical Transparency of DLC Films by ICP-CVD International conference

    The 9th Korea-Japan Workshop 

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    Event date: 2009

    Language:English  

  836. グリーンビークルに向けた最新動向

    とよたビジネスフェア2009 

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    Event date: 2009

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  837. Chemical dynamics of protein adsorption and desorption on regulated surfaces in aqueous solutions International conference

    Spring 2009 National Meeting & Exposition 

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    Event date: 2009

    Language:English   Presentation type:Poster presentation  

  838. Adsorption of protein on polyelectrolyte brush surface International conference

    Spring 2009 National Meeting & Exposition 

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    Event date: 2009

    Language:English   Presentation type:Poster presentation  

  839. Pt/CNB ( 白金ナノ粒子担持カーボンナノボール) 合成条件と白金担持量

    樋口晶生、市野善道、齋藤永宏、高井

    2009年資源素材学会 

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    Event date: 2009

    Language:Japanese  

  840. ソリューションプラズマ・カルシネーションによるメソポーラスシリカの合成

    POOTAWANG Panuphong、齋藤永宏、高井 治

    日本金属学会 2009年春期(第114回)講演大会 

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    Event date: 2009

    Language:Japanese   Presentation type:Poster presentation  

  841. 疎水性及び親水性二元系SAMの濡れ性の評価

    鈴木和也、李 先炯、齋藤永宏、高井 治

    日本金属学会 2009年春期(第114回)講演大会 

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    Event date: 2009

    Language:Japanese   Presentation type:Poster presentation  

  842. 超はっ水/PEG マイクロテンプレートを用いた微生物の位置選択的固定化

    樋口晶生、宮原康弘、齋藤永宏、高井 治

    日本金属学会 2009年春期(第114回)講演大会 

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    Event date: 2009

    Language:Japanese   Presentation type:Poster presentation  

  843. ソリューションプラズマ処理によるポリマー中へのナノマテリアルの分散性の向上

    稗田純子、野口陽平、齋藤永宏、高井 治

    日本金属学会 2009年春期(第114回)講演大会 

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    Event date: 2009

    Language:Japanese  

  844. ソリューションプラズマ反応によるCu 微粒子の作製と評価

    趙星彪、森貴昭、齋藤永宏

    日本金属学会 2009年春期(第114回)講演大会 

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    Event date: 2009

    Language:Japanese  

  845. ソリューションプラズマによる金ナノ粒子生成機構の解析

    樋口晶生、齋藤永宏、高井 治

    2009年春季 第56回応用物理学関係連合講演会 

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    Event date: 2009

    Language:Japanese  

  846. 表面波プラズマ開始グラフト重合によるPET表面親水化処理および細胞接着性の制御析<BR> 学会名等:2009年<BR>

    鈴木和也、藤田翔平、遠藤洋史、齋藤永宏、高井

    2009年春季 第56回応用物理学関係連合講演会 

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    Event date: 2009

    Language:Japanese   Presentation type:Poster presentation  

  847. ソリューションプラズマを用いた白金ナノ粒子の合成とその反応機構の解明

    趙 星彪、西垣 拓、齋藤永宏、高井 治

    2009年春季 第56回応用物理学関係連合講演会 

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    Event date: 2009

    Language:Japanese  

  848. 斜め堆積スパッタ法を用いたITO微細構造膜の作製とEC特性評価

    松井 淳、石川裕幸、竹内宏樹、津田早登、井上泰志、高井 治

    2009年春季 第56回応用物理学関係連合講演会 

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    Event date: 2009

    Language:Japanese  

  849. 微生物の自在固定化を指向した超はっ水/PEGマイクロテンプレート型チップの作製

    遠藤洋史、宮原康弘、齋藤永宏、高井 治

    2009年春季 第56回応用物理学関係連合講演会 

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    Event date: 2009

    Language:Japanese  

  850. ICP-CVD法によるDLC膜の光学的特性に及ぼすパルスバイアスの影響<BR>

    2009年秋季 第70回 応用物理学会 学術講演会 

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    Event date: 2009

    Language:Japanese  

  851. 液中プラズマ反応場に及ぼすイオン濃度の影響

    2009年秋季 第70回 応用物理学会 学術講演会 

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    Event date: 2009

    Language:Japanese  

  852. ソリューションプラズマ形成におけるナノ・マイクロバブルの影響

    2009年秋季 第70回 応用物理学会 学術講演会 

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    Event date: 2009

    Language:Japanese  

  853. 液中プラズマプロセスによる異方性金ナノ粒子の合成

    2009年秋季 秋期(第145回)大会 (日本金属学会) 

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    Event date: 2009

    Language:Japanese  

  854. Ultra Water Repellent Film Deposited on Inner Surface of Narrow Tube by ICP-CVD International conference

    The 9th Korea-Japan Workshop 

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    Event date: 2009

    Language:English  

  855. Organic Template Removal of Single Crystal Mesoporous Silica using Solution Plasma Process International conference

    International Symposium on Plasma Chemistry19(ISPC19) 

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    Event date: 2009

    Language:English  

  856. Spectroscopic investigations of chemical reactions in liquids plasma International conference

    International Symposium on Plasma Chemistry19(ISPC19) 

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    Event date: 2009

    Language:English  

  857. Solution plasma synthesis and catalytic property of platinum nanoparticles supported on carbon nanoballs International conference

    International Symposium on Plasma Chemistry19(ISPC19) 

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    Event date: 2009

    Language:English  

  858. Ultra-water repellent modification of biological soft-materials using atmospheric plasma and self-assembled monolayer International conference

    International Symposium on Plasma Chemistry19(ISPC19) 

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    Event date: 2009

    Language:English  

  859. バイオミメティックプロセシングによる環境調和材料の開発

    第4回3大学3研究所連携プロジェクト公開討論会 

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    Event date: 2009

    Language:Japanese  

  860. 固体表面上におけるペプチド吸着状態の解析<BR>

    2009年秋季 第70回 応用物理学会 学術講演会 

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    Event date: 2009

    Language:Japanese  

  861. ポリスチレンスルホン酸ナトリウムブラシ上へのタンパク質吸着に及ぼすスルホ基導入率の効果

    2009年秋季 第70回 応用物理学会 学術講演会 

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    Event date: 2009

    Language:Japanese  

  862. 有機薄膜の新しい応用(親水・撥水・防食・生体親和性)

    第1回電子・機構部品表面処理技術シンポジウム 

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    Event date: 2009

    Language:Japanese  

  863. Nanostructure and Surface Function for Biomaterials International conference

    3rd International Conference on Science and Technology for Advanced Ceramics (STAC3) 

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    Event date: 2009

    Language:English  

  864. Evaluation of Properties of Magnetite Teeth of Chiton International conference

    3rd International Conference on Science and Technology for Advanced Ceramics (STAC3) 

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    Event date: 2009

    Language:English  

  865. Design and preparation of nanostructured thin films for biomimetic surfaces International conference

    SPIE Optics + Photonics 2009 

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    Event date: 2009

    Language:English  

  866. Plasma Nanomaterials Processing

    M.A. Bratescu, N. Saito, O. Takai

    19th MRS-J Academic Symposium 

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    Event date: 2009

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  867. Kinetics and Thermodynamics Study of Protein Adsorption Using in-situ UV Attenuated Total Reflectance Spectroscopy

    M.A. Bratescu, N. Saito, O. Takai

    Ninth International Symposium on Biomimetic Materials Processing (BMMP-9) 

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    Event date: 2009

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  868. Solution-plasma Reforming of Gold Nanoparticles International conference

    Plasma Processing Science (Gordon research conference 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  869. Biomimetic Materials Processing International conference

    CIMTEC 2008 

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    Event date: 2008

    Language:English   Presentation type:Oral presentation (invited, special)  

  870. Crystallinity of ZnO thin films prepared by RF plasma CVD International conference

    Interfinish 2008 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  871. Longtime hydrophilicity of PET Surface fabricated by Surface Wave Plasma-Initiated Graft Polymerization International conference

    Interfinish 2008 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  872. Effect of O2 and CO2 Gases Addition on Hardness of Ultra Water Repellent Film Prepared by MPECVD International conference

    Interfinish 2008 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  873. Adhesion Control of Bacteria with Micropatterned Super-Hydrophobic/Super-Hydrophilic and Super-Hydrophobic/Poly(Ethelene Glycol) Surfaces International conference

    Interfinish 2008 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  874. Electrode Erosion in Water Plasma Discharge International conference

    Interfinish 2008 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  875. Electrochromic Phenomenon Originated in Surface Reaction International conference

    Interfinish 2008 

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    Event date: 2008

    Language:English   Presentation type:Oral presentation (invited, special)  

  876. Etching Effect of Solution Plasma on Gold Nanoparticles<BR>学会名等:Interfinish 2008<BR> International conference

    Interfinish 2008 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  877. Diagnosis of an Electrical Discharge Generated Between Electrodes with Different Electron Emission Ability in Ultrapure Water International conference

    Interfinish 2008 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  878. Synthesis of Face-Centered Tetragonol FePt Nanoparticles by Solution Plasma International conference

    Interfinish 2008 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  879. Synthesis of Shape-Controlled Gold Nanoparticles using Discharge in Aqueous Solution International conference

    Interfinish 2008 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  880. Analysis and Diagnosis of Reactions on the Interface between Plasma and Solution International conference

    Interfinish 2008 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  881. Synthesis and Characterization of Copper-based Nanoparticles by Electrode Erosion in Liquid Discharge International conference

    Interfinish 2008 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  882. In-situ Study of Bacterial S-layer Protein Binding Process with Noble Metal Surface International conference

    Interfinish 2008 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  883. 微生物付着制御のためのマイクロテンプレートの作製

    稗田純子、宮原康弘、齋藤永宏、高井 治

    第57回高分子討論会 

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    Language:Japanese   Presentation type:Poster presentation  

  884. Electrochromic Properties of InN:Sn films Deposited by Reactive Evaporation International conference

    9th Asia-Pacific Conference on Plasma Science and Technology 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  885. In-situ ATR-UV Spectroscopy of Adsorption-Desorption Isotherms of Silane on Silica International conference

    AVS 55th International Symposium and Exhibition 

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    Event date: 2008

    Language:English  

  886. Fabrication of Micro-Templates for the Control of Bacterial Immobilization International conference

    AVS 55th International Symposium and Exhibition 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  887. Kinetic Study of Protein Adsorption on Polyelectrolyte Brush Surface International conference

    AVS 55th International Symposium and Exhibition 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  888. Excited Species by Shorter-Pulsed Electrical Discharges in Aqueous Solutions: Effect of Electrodes with Low Work Function International conference

    AVS 55th International Symposium and Exhibition 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  889. Optimization of Hardness of Ultra Water Repellent Silica-Based Film by Tuning Surface Structure and Film Matrix International conference

    AVS 55th International Symposium and Exhibition 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  890. Characterization of Platinum Catalyst Supported on Carbon Nanoballs Prepared by Solution Plasma Processing International conference

    AVS 55th International Symposium and Exhibition 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  891. Effect of Dissolved gases and Ions onto Solution Plasma Fields International conference

    AVS 55th International Symposium and Exhibition 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  892. Organic Compounds Synthesized by Short-Pulsed Discharge in Aqueous Solution International conference

    AVS 55th International Symposium and Exhibition 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  893. Effect of Water Pulsed Plasma on Electrode Surface International conference

    AVS 55th International Symposium and Exhibition 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  894. Decoloration of Organic Dyes by Bipolar Pulsed Electrical Discharge in Aqueous Solution International conference

    AVS 55th International Symposium and Exhibition 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  895. Study of Protein Adsorption onto a Polymer Film by in-situ UV Attenuated Total Reflectance Spectroscopy. International conference

    MRS fall meeting 2008 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  896. Multi-shaped Nanogold Prepared by Non-thermal Plasma in Aqueous Solution and the Biocompatibility. International conference

    MRS fall meeting 2008 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  897. Solution-Plasma Synthesis of FePt Nanoparticles Supported onto CNTs International conference

    MRS fall meeting 2008 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  898. Surface Modification of Nanoparticles Induced by Solution Plasma International conference

    MRS fall meeting 2008 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  899. A Novel Method for Organic Template Removal Using by Solution Plasma Process for Single Crystal Mesoporous Silica Synthesis International conference

    The 1st Korea-Japan Joint Forum on Sol-Gel Scinece and Technology 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  900. Surface Modification of Carbon Nanoball by Using Solution Plasma

    IUMRS-ICA 2008 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  901. UV-ATR Polarization Spectroscopy of Self-Assembled Coumarin Monolayer

    IUMRS-ICA 2008 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  902. The wide band gap semiconductor electrodes influence on the time evolution of the reactive species generated in pulsed electrical discharges in lipuids International conference

    Plasma Processing Science (Gordon research conference 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  903. Analysis of Reactions in Solution Plasma International conference

    Plasma Processing Science (Gordon research conference 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  904. Electrode Erosion and Nanoparticles Reduction in Solution Plasma Process International conference

    IUMRS-ICEM 2008 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  905. Synthesis and Characterization of Copper-based Nanoparticles using Liquid Discharge and Cu electrode International conference

    IUMRS-ICEM 2008 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  906. UV-ATR spectroscopy of silane adsorption on silicae International conference

    ECOSS-25 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  907. Synthesis of FePt Nanoparticles by Solution Plasma in Aqueous Solution International conference

    ECOSS-25 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  908. Fabrication of shape-controlled nanoparticles using ionic surfactant in solution plasma International conference

    The 3rd International School of Advanced Plasma Technology 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  909. Synthesis Mechanism of Gold Nanoparticles by Solution Plasma International conference

    The 3rd International School of Advanced Plasma Technology 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  910. 成膜圧力が及ぼす超はっ水膜の表面形状への影響

    櫻井 宙、齋藤永宏、高井 治

    第118回講演大会 

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    Event date: 2008

    Language:Japanese  

  911. ソリューションプラズマを用いた合成における金ナノ粒子溶解現象へのpH の影響

    稗田純子、齋藤永宏、高井 治

    第118回講演大会 

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    Event date: 2008

    Language:Japanese  

  912. プラズマCVDを用いたZnO:N 薄膜の作製と評価

    鈴木健太郎、齋藤永宏、高井 治

    第118回講演大会 

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    Event date: 2008

    Language:Japanese  

  913. 有機化合物を用いたソリューションプラズマ反応解析

    御田村 紘志、齋藤永宏、高井 治

    第118回講演大会 

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    Event date: 2008

    Language:Japanese  

  914. 微生物吸着挙動に及ぼす物理化学的表面特性の影響

    宮原康弘、齋藤永宏、高井 治

    第118回講演大会 

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    Event date: 2008

    Language:Japanese  

  915. 白金ナノ粒子の粒径制御によるPt/CNBの触媒活性の向上

    市野善道、御田村紘志、齋藤永宏、高井 治

    第69回応用物理学会学術講演会 

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    Event date: 2008

    Language:Japanese  

  916. ソリューションプラズマ有機合成プロセスの開発

    御田村 紘志、齋藤永宏、高井 治

    第69回応用物理学会学術講演会 

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    Language:Japanese  

  917. アルカリ性金属イオンと液中プラズマの相互関係

    藤川理大、齋藤永宏、高井 治

    第69回応用物理学会学術講演会 

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    Event date: 2008

    Language:Japanese   Presentation type:Poster presentation  

  918. 低級アルコール・水系中でのソリューションプラズマ反応の解析

    森 貴昭、齋藤永宏、高井 治

    第69回応用物理学会学術講演会 

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    Language:Japanese   Presentation type:Poster presentation  

  919. プラズマ開始グラフト重合によるPET表面の細胞接着

    藤田翔平、齋藤永宏、高井 治

    第69回応用物理学会学術講演会 

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    Event date: 2008

    Language:Japanese  

  920. Solution Plasma Processing for Nanoparticles International conference

    ISGLP 2008 

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    Event date: 2008

    Language:English   Presentation type:Oral presentation (invited, special)  

  921. Chemical Reaction of Carboxyl Acids in Solution Plasma International conference

    ISGLP 2008 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  922. Water Plasma Discharge Studied by Optical Emission Spectroscopy International conference

    ISGLP 2008 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  923. Synthesis and Characterization of Copper-based Nanoparticles vis Solution Plasma International conference

    ISGLP 2008 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  924. Interpretation of Gold Nanoparticles Synthesis in Solution Plasma with Quantitative Underprinning International conference

    ISGLP 2008 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  925. Protection Ability of Surfactant for Copper Nanoparticles in Solution Plasma International conference

    ISGLP 2008 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  926. Formation Process of Gold Nanoparticles in Solution Plasma

    Materials Science and Nanotechnology for the 21th Century 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  927. Solution Plasma Processing for Nanomaterials

    Materials Science and Nanotechnology for the 21th Century 

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    Event date: 2008

    Language:English  

  928. バイオミメティクスによる表面界面の創製

    N. Saito

    電子情報通信学会 

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    Event date: 2008

    Language:Japanese  

  929. プラズマCVDによるZnO薄膜の結晶性に及ぼす基板バイアスの影響

    鈴木健太郎、齋藤永宏、高井 治

    日本金属学会2008年秋期(第143回)大会 

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    Event date: 2008

    Language:Japanese   Presentation type:Poster presentation  

  930. ソリューションプラズマによるFePtナノ微粒子の合成とそのメカニズム考察

    李 京熙、 齋藤永宏、高井

    日本金属学会2008年秋期(第143回)大会 

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    Language:Japanese   Presentation type:Poster presentation  

  931. 金ナノ粒子分散液系ソリューションプラズマによる金ナノ粒子の粒径変化

    稗田純子、齋藤永宏、高井 治

    日本金属学会2008年秋期(第143回)大会 

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    Event date: 2008

    Language:Japanese  

  932. プラズマ開始グラフト重合によるPETおよびPTFE表面の親水化処理と生体活性制御

    藤田翔平、齋藤永宏、高井 治

    第57回高分子討論会 

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    Event date: 2008

    Language:Japanese   Presentation type:Poster presentation  

  933. The Effect of Low Emissivity Electrodes on the Reactive Species Generation in the Pulsed Electrical Discharges in Ultrapure Water International conference

    9th Asia-Pacific Conference on Plasma Science and Technology 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  934. Anti-bacterial Ceramics Containing Ag Ion in the Glaze

    IUMRS-ICA 2008 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  935. Model of Low Friction on Silicon DLC Film

    IUMRS-ICA 2008 

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    Event date: 2008

    Language:English  

  936. Crystallinity of ZnO thin films prepared by RF plasma CVD<BR> 学会名等:IUMRS-ICA 200<BR>

    IUMRS-ICA 2008 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  937. ソリューションプラズマを用いた有機化学変換法の開発

    御田村 紘志、齋藤永宏、高井 治

    第57回高分子討論会 

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    Event date: 2008

    Language:Japanese   Presentation type:Poster presentation  

  938. Erosion on needle electrodes in water plasma discharge International conference

    9th Asia-Pacific Conference on Plasma Science and Technology 

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    Event date: 2008

    Language:English  

  939. Surface Modification by Solution Plasma-induced Chemical Reactions International conference

    9th Asia-Pacific Conference on Plasma Science and Technology 

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    Event date: 2008

    Language:English   Presentation type:Oral presentation (invited, special)  

  940. Fabrication of Polymer-grafted Carbon Nanoparticles by Solution Plasma International conference

    9th Asia-Pacific Conference on Plasma Science and Technology 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  941. Synthesis and Characterization of Copper-based Nanoparticles via Liquid Glow Discharge International conference

    9th Asia-Pacific Conference on Plasma Science and Technology 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  942. Ion transfer effect between liquid and plasma phase in solution plasma on synthesis of gold nanoparticles International conference

    9th Asia-Pacific Conference on Plasma Science and Technology 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  943. Copper nanoparticles with protective functionalized-polymer synthesized by short-pulsed discharge in aqueous solution International conference

    9th Asia-Pacific Conference on Plasma Science and Technology 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  944. Analysis of Protected Copper Nanoparticles Synthesized by Solution Plasma

    IUMRS-ICA 2008 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  945. Relation between Surface Roughness and Mechanical Property of the Ultra Water Repellency Films

    IUMRS-ICA 2008 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  946. Polymeric Coatings Used by Plasma-Initiated Graft Polymerization for Fabrication of Biointerface

    IUMRS-ICA 2008 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  947. The Influence of Physicochemical Properties to Bacterial Adsorption to Material Surfaces

    IUMRS-ICA 2008 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  948. Synthesis and Characterization of Copper Nanoparticles Using Solution Glow Discharge

    IUMRS-ICA 2008 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  949. Added Salt Effect on a Fibrinogen Adsorption Kinetics at a Planer Strong Polyelectrolyte Brush

    IUMRS-ICA 2008 

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    Event date: 2008

    Language:English  

  950. Controlling Particle Size of Carbon Nanoballs by Adjustment of Gas Mass Flow

    IUMRS-ICA 2008 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  951. Evaluation of Polyelectrolyte Brush Surface

    IUMRS-ICA 2008 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  952. Diagnosis of a Self Assembled-Monolayer on Paper Surface at Atmosphere Pressure

    IUMRS-ICA 2008 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  953. Effect of Ion Concentration on Plasma State in Liquid

    IUMRS-ICA 2008 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  954. Optical Diagnostic of the Reactive Species Generated in the After Glow Regions of Electrical Pulsed Discharges in Ultrapure Wate

    IUMRS-ICA 2008 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  955. Novel Method for Organic Template Removal Assisted by Solution Plasma Process in Single Crystal Mesoporous Silica Synthesis

    IUMRS-ICA 2008 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  956. P. Pootawang, N. Saito and O. Takai

    IUMRS-ICA 2008 

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    Event date: 2008

    Language:English   Presentation type:Poster presentation  

  957. 表面ナノテクロジーを利用したバイオインターフェース

    電子情報通信学会通信技術研究報告(有機エレクトロニクス) 

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    Event date: 2007

    Language:Japanese  

  958. 静電場ゆらぎを有する表面上でのフィブリノゲンの吸着挙動

    電子情報通信学会通信技術研究報告(有機エレクトロニクス) 

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    Event date: 2007

    Language:Japanese  

  959. 疎水性金ナノロッドの配向的集積

    日本金属学会 2007年(第140回)大会 

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    Event date: 2007

    Language:Japanese  

  960. 熱CVD法によるカーボン構造体のトポロジー制御とその特性

    表面技術協会 第115回講演大会 

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    Event date: 2007

    Language:Japanese  

  961. ソリューションプラズマによる窒化プロセスの探索

    表面技術協会 第115回講演大会 

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    Event date: 2007

    Language:Japanese  

  962. ソリューションプラズマ反応場の創製と応用

    東北大学電気通信研究所共同プロジェクト研究会 

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    Event date: 2007

    Language:Japanese  

  963. 超はっ水/超親水パターン表面およびナノ微粒子を含む培地での細胞培養

    応用物理学会 2007年春季第54回学術講演会 

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    Event date: 2007

    Language:Japanese  

  964. 超はっ水・超親水マイクロパターン上での細胞の接着と伸展

    表面技術協会 第115回講演大会 

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    Event date: 2007

    Language:Japanese  

  965. プラズマCVD法により作製したa-SiO:CH膜のはっ水特性

    表面技術協会 第115回講演大会 

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    Event date: 2007

    Language:Japanese  

  966. 有機シリコン分子の電子衝撃解離過程の解析

    表面技術協会 第115回講演大会 

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    Event date: 2007

    Language:Japanese  

  967. 熱CVD法によるカーボン構造体のトポロジー制御とその特性

    表面技術協会 第115回講演大会 

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    Event date: 2007

    Language:Japanese  

  968. ζ電位測定による高分子電解質ブラシの対イオン凝集

    特定領域研究「ソフトマター物理」第1回公開シンポジウム 

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    Event date: 2007

    Language:Japanese  

  969. 高電荷密度高分子電解質ブラシにおけるζ電位の添加塩濃度依存性

    日本物理学会2007年春季大会 

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    Event date: 2007

    Language:Japanese  

  970. フィブリノーゲン吸着挙動の速度論的解析

    応用物理学会 2007年春季第54回学術講演会 

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    Event date: 2007

    Language:Japanese  

  971. 走査型プローブ顕微鏡を用いて作製したナノドットによる自己組織化単分子膜の成長制御

    応用物理学会 2007年春季第54回学術講演会 

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    Event date: 2007

    Language:Japanese  

  972. 液中プラズマによる白金ナノ微粒子の作製

    応用物理学会 2007年春季第54回学術講演会 

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    Event date: 2007

    Language:Japanese  

  973. 熱CVD法によるカーボンナノボールの作製と特性評価

    応用物理学会 2007年春季第54回学術講演会 

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    Event date: 2007

    Language:Japanese  

  974. ζ電位による高分子電解質ブラシにおけるイオン凝集特性

    応用物理学会 2007年春季第54回学術講演会 

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    Event date: 2007

    Language:Japanese  

  975. Arバブル支援による純水中でのプラズマ生成と滅菌処理への応用

    応用物理学会 2007年春季第54回学術講演会 

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    Event date: 2007

    Language:Japanese  

  976. 疎水性金ナノロッドの組織化

    応用物理学会 2007年春季第54回学術講演会 

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    Event date: 2007

    Language:Japanese  

  977. 液中プラズマによるPt ナノコロイドの合成

    日本金属学会 2007年(第140回)大会 

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    Event date: 2007

    Language:Japanese  

  978. ポリスチレンスルホン酸ブラシにおけるζ電位の添加塩濃度依存性

    表面技術協会 第115回講演大会 

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    Event date: 2007

    Language:Japanese  

  979. 光導波路分光法による無電解めっきの析出過程解析光導波路分光法による無電解めっき析出過程その場測定

    日本金属学会 2007年(第140回)大会 

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    Event date: 2007

    Language:Japanese  

  980. 光導波路分光法による無電解めっきの析出過程解析

    表面技術協会 第115回講演大会 

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    Event date: 2007

    Language:Japanese  

  981. フィブリノーゲン吸着挙動の動力学的解明

    表面技術協会 第115回講演大会 

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    Event date: 2007

    Language:Japanese  

  982. ソリューションプラズマによるPtナノコロイドの合成

    表面技術協会 第115回講演大会 

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    Event date: 2007

    Language:Japanese  

  983. Collagen polymerization on nano-porous membranes by MW plasma

    The 3rd International Workshop on Advanced Plasma Processing and Diagnostics 

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    Event date: 2006

    Language:English  

  984. Chemical conversion memory of self-Assembled monolayer through nano-probe electrochemistry

    The 6th Korea-Japan Symposium on Plasma and Thin Film Technology 

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    Event date: 2006

    Language:English  

  985. Comparative Surface Analysis by Localized Surface Plasmon Resonance and Surface Enhanced Raman Scattering

    8th International Conference on Adnanced Surface Engineering 

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    Event date: 2006

    Language:English  

  986. Study on Photo-and Plasuma-Calcination Process for Preparation of Mesoporous Tungsten Oxide Thin Films

    8th International Conference on Adnanced Surface Engineering 

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    Event date: 2006

    Language:English  

  987. Deposition process of ultra water-repellent thin films by PECVD method

    The 6th Korea-Japan Symposium on Plasma and Thin Film Technology 

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    Event date: 2006

    Language:English  

  988. ソリューションプラズマ反応場を用いた金ナノコロイドの合成とその機構の解明

    平成18年度表面技術若手研究者・技術者研究交流発表会 

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    Event date: 2006

    Language:Japanese  

  989. Synthesis of gold nanoparticles using solution plasma processing (SPP)

    The 4th international workshop on advanced plasma processing and diagnostics & thin film technology for electronic materials 

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    Event date: 2006

    Language:English  

  990. プラズマCVDプロセスにおける種々の有機シリコン分子の挙動に関する比較研究

    第17回日本MRS学術シンポジウム 

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    Event date: 2006

    Language:Japanese  

  991. Behavior analysis of various organosilicon molecules in PECVD processes

    AVS 53rd International Symposium & Exhibition 

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    Event date: 2006

    Language:English  

  992. Behavior of intramolecular bondings of organosilicon reactants in PECVD processes for SiO:CH films

    The 6th Korea-Japan Symposium on Plasma and Thin Film Technology 

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    Event date: 2006

    Language:English  

  993. メチル系有機シリコン化合物を原料に用いたプラズマCVDにおけるAr分圧の影響

    表面技術協会第114回講演大会 

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    Event date: 2006

    Language:Japanese  

  994. Electrochromic properties of InN films prepared by oblique-angle evaporation with active nitrogen source

    The 17th Symposium of The Materials Reserch Society of Japan(MRS-J) 

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    Event date: 2006

    Language:English  

  995. Columnar shape control of electrochromic indium nitride films by using glancing-angle reactive evaporation method

    28th International Symposium on Dry Process 

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    Event date: 2006

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  996. High controllability of columnar structure in indium nitride films prepared by oblique-angle evaporation with active nitrogen source

    The 6th Korea-Japan Symposium on Plasma and Thin Film Technology 

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    Event date: 2006

    Language:Japanese  

  997. 斜め堆積反応性蒸着法を用いて作製したInN薄膜の微細構造制御

    日本金属学会2006年秋期(第139回)大会 

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    Event date: 2006

    Language:Japanese  

  998. Columnar shape control of electrochromic indium nitride films by using glancing-angle reactive evaporation method

    7th International Meeting on ELECTROCHROMISM 

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    Event date: 2006

    Language:English  

  999. Behavior analysis of organosilane molecules in plasmas for fabrication of SiOCH thin films

    The 27th International Symposium on Dry Process 

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    Event date: 2006

    Language:English  

  1000. Formation of ultra water-repellent thin films in organosilane plasma by PECVD method

    AVS 53th international symposium & exhibition 

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    Event date: 2006

    Language:English  

  1001. Single molecule images of fibrinogen protein

    The 16th international microscopy congress 

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    Event date: 2006

    Language:English  

  1002. Biomolecule detection by evanescent wave absorption and fluorescence spectroscopy

    17th MRS-J Academic Symposium 

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    Event date: 2006

    Language:English  

  1003. Study of deoyribonucleic acid adsorption by UV absorption on an optical waveguide surface

    The 6th Korea-Japna Symposium on Plasma and Thin Film Technology 

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    Event date: 2006

    Language:English  

  1004. Detection of deoxyribonucleic acid on different group terminated surfaces by evanescent wave spectroscopy

    28th International Symposium on Dry Processes 

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    Event date: 2006

    Language:English  

  1005. Super-hydrophobic surface through plasma enhanced CVD and its application toward living cell

    4th international conference on advanced plasma processing and diagnostics 

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    Event date: 2006

    Language:English  

  1006. 表面ナノ構造・マイクロパターンによる細胞の増殖とアポトーシス

    表面技術協会第114回講演大会 

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    Event date: 2006

    Language:Japanese  

  1007. Ga添加InN薄膜のエレクトロクロミック特性評価

    第16回学生による材料フォーラム 

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    Event date: 2006

    Language:Japanese  

  1008. InN薄膜のエレクトロクロミック特性に与えるGa添加の影響

    表面技術協会 第114回講演大会 

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    Event date: 2006

    Language:Japanese  

  1009. F2レーザーを用いた自己組織化単分子膜の液浸露光

    2006年(平成18年) 第16回学生による材料フォーラム 

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    Event date: 2006

    Language:Japanese  

  1010. Sterilization of Escherichia coli using pulse plasma discharge in aqueous solution

    The 17th Symposium of The Materials Research Society of Japan 

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    Event date: 2006

    Language:English  

  1011. Effect of discharge mode in water on sterilization process

    The 4th International Workshop on Advanced Plasma Processing and Diagnostics & Thin Film Technology for Electronic Materials 

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    Event date: 2006

    Language:English  

  1012. 水中プラズマを用いた大腸菌の殺菌処理

    第16回学生による材料フォーラム 

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    Event date: 2006

    Language:Japanese  

  1013. Surface grafting of organic functions on polymers through surface wave plasma irradiation

    The 17th Symposium of The Materials Research Society of Japan 

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    Event date: 2006

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  1014. Fabrication of polymer-brush on polymer substrates employing microwave exited surface wave plasma

    The 4th International Workshop on Advanced Plasma Processing and Diagnostics & Thin Film Technology for Electronic Materials 

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    Event date: 2006

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  1015. 表面波プラズマ照射による基板表面ラジカルを利用したポリマー改質

    表面技術協会第114回講演大会 

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    Event date: 2006

    Language:Japanese  

  1016. Optical Waveguide spectroscopy of DNA molecules adsorbed on an amino-terminated surface

    AVS 53rd International Symposium and Exhibition (AVS) 

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    Event date: 2006

    Language:English  

  1017. 疎水性および親水性表面上でのフィブリノゲンの吸着挙動の解明

    平成18年度表面技術若手研究者・技術者研究交流発表会 

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    Event date: 2006

    Language:Japanese  

  1018. Adsorption mechanism of fibrinogen on SAM surfaces

    The 17th Symposium of The materials Research Society of Japan (MRS-J) 

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    Event date: 2006

    Language:English  

  1019. Fibrinogen adsorption mechanism on hydrophilic or hydrophobic surfaces

    The 16th Korea-Japan Symposium on Plasma and Thin Film Technology 

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    Event date: 2006

    Language:English  

  1020. 光導波路分光法による自己組織化単分子膜上におけるフィブリノーゲンの吸着挙動

    表面技術協会第114回講演大会 

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    Event date: 2006

    Language:Japanese  

  1021. Observation of adsorbed fibrinogen on zeta-potential regulated SAM surface

    The 17th Symposium of The Materials Research Society of Japan (MRS-J) 

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    Event date: 2006

    Language:English  

  1022. Fabrication of binary nano/micro sized domain composed of alkyl and fluoroalkylsilane self-assembled monolayer

    AVS 53rd International Symposium & Exhibition 

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    Event date: 2006

    Language:English  

  1023. Dehradation of Bacteria in Liquid Medium Using Speceal Type of Plasma Dielectric Barrier Discharage Reactor

    8th Asia ? pacific conference on plasma science and technology and 19th Symposium on Plasma Science for Materials 

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    Event date: 2006

    Language:English  

  1024. Surface Potential Imaging of DNA with self-assembled structures

    The 16th international microscopy congress 

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    Event date: 2006

    Language:English  

  1025. Mechanical Property of Fibrinogen Protein Acquired by Scanning Probe Microscopy

    The 16th international microscopy congress 

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    Event date: 2006

    Language:English  

  1026. FESEM observation in formation of the ultra water repellent thin films prepared by PECVD

    The 16th international microscopy congress 

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    Event date: 2006

    Language:English  

  1027. Singie Molecule Images of Fibrinogen Protein

    The 16th international microscopy congress 

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    Event date: 2006

    Language:English  

  1028. Localized Surface Plasmon Resonance of Different Silicon Ester Compounds Adsorbed on Silver Nanoparticles

    ECOSS 24(European conference on surface science) 

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    Event date: 2006

    Language:English  

  1029. Soft Lithography of OD-Monolayer Covalently Linked to Hydrogen-Terminated Silicon through Nano-Probe Anodization

    ECOSS 24(European conference on surface science) 

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    Event date: 2006

    Language:English  

  1030. Probing into Adsorption Behavior of Human Plasma Fibrinogen on Self-Assembled Monolayers with Different Chemical Properties by Scanning Probe Microscopy

    ECOSS 24(European conference on surface science) 

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    Event date: 2006

    Language:English  

  1031. Molecular Recognition of Biomolecules on Multifunctional Carbohydrate Pattern

    ECOSS 24(European conference on surface science) 

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    Event date: 2006

    Language:English  

  1032. SPN analysis of fibrinogen adsorption on solid surfaces

    ECOSS 24(European conference on surface science) 

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    Event date: 2006

    Language:English  

  1033. Study on the mechanism of photo-induced crystallization of Zinc Oxide thin film with vacuum ultra violet light at 172m

    ECOSS 24(European conference on surface science) 

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    Event date: 2006

    Language:English  

  1034. 有機シラン系自己組織化単分子膜の形成過程に及ぼす末端官能基の影響

    2006年秋季 第67回応用物理学会学術講演会 

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    Event date: 2006

    Language:Japanese  

  1035. 光導波路分光法を用いたアデニンおよびチミンオリゴヌクレオチドの吸着挙動解析

    2006年秋季 第67回応用物理学会学術講演会 

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    Event date: 2006

    Language:Japanese  

  1036. 真空紫外光を照射した亜鉛系酸化物前駆体薄膜の結晶化機構の解明

    2006年秋季 第67回応用物理学会学術講演会 

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    Event date: 2006

    Language:Japanese  

  1037. 水中プラズマを用いた大腸菌および黄色ブドウ球菌の処理

    2006年秋季 第67回応用物理学会学術講演会 

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    Event date: 2006

    Language:Japanese  

  1038. 反応性イオンプレーティング法によるInGaN成膜における斜め堆積効果

    2006年秋季 第67回応用物理学会学術講演会 

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    Event date: 2006

    Language:Japanese  

  1039. 液中プラズマ反応場を利用した金ナノ粒子の生成とその機構の解明

    2006年秋季 第67回応用物理学会学術講演会 

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    Event date: 2006

    Language:Japanese  

  1040. Diagnosis of organosilane plasma in formation of ultra water repellent thin films by PECVD method

    8th Asia ? pacific conference on plasma science and technology and 19th Symposium on Plasma Science for Materials 

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    Event date: 2006

    Language:English  

  1041. Plasma polymerizaiton in dontinuous and pulsed modes for deposition of amine rich films

    PSE2006 (10th International Conference on Plasma Surface Enginiiring ) 

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    Event date: 2006

    Language:English  

  1042. A micropatterned multifunctional carbohydrate display by an orthogonal self-assembling strategy

    17th MRS-Japan Academic Symposium 

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    Event date: 2006

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  1043. 金ナノロッドを含有する有機?無機ハイブリッドの作製

    日本金属学会 2006秋期講演大会 

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    Event date: 2006

    Language:Japanese  

  1044. 液中プラズマ反応場を利用した金ナノコロイドの合成

    日本金属学会 2006秋期講演大会 

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    Event date: 2006

    Language:Japanese  

  1045. フォトカルシネーション法による亜鉛系酸化物薄膜の結晶化因子

    日本金属学会 2006秋期講演大会 

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    Event date: 2006

    Language:Japanese  

  1046. Treatment of Different Plastic Materials by Surface Wave Plasma

    International Union of Materials Research Societies-International Conference in Asia-2006 

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    Event date: 2006

    Language:English  

  1047. Behavior of Various Organosilicon Molecules in PECVD Processes for Hydrocarbon-doped Oxide Films

    International Union of Materials Research Societies-International Conference in Asia-2006 

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    Event date: 2006

    Language:English  

  1048. The Study on Mechanism of Gold Particles Symthesis using Plasma Discharge in Aqueous Solution

    International Union of Materials Research Societies-International Conference in Asia-2006 

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    Event date: 2006

    Language:English  

  1049. Synthesis of palm to smart carbon materials by the solution plasma processing

    Md. Zahidul Islam, Anyarat Watthanaphanit, Nagahiro Saito

    2015.12.12 

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    Language:English   Presentation type:Poster presentation  

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  1050. 高繰り返し周波数領域でのソリューションプラズマによるカーボン合成 International conference

    玄 光龍, 上野智永, 齋藤永宏

    表面技術学会  2015.9.8 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:信州大学  

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  1051. 酸化銀をドープした酸化スズ-グラフェンナノ複合材料の特性評価 International conference

    S. Jirapong, 上野智永, 是津信行, 齋藤永宏

    表面技術協会第124回講演大会  2011.9.22 

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  1052. 酸素ドープ窒化インジウム薄膜のバンドギャップエネルギーの制御 International conference

    大野 一佳, Maria-Antoaneta Bratescu, 齋藤 永宏

    第4回マイクロ・ナノ工学シンポジウム  2012.10.22 

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    Venue:北九州国際会議場  

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  1053. 酸素ドープ窒化インジウム薄膜のバンドギャップエネルギー制御 International conference

    大野一佳, Maria-Antoaneta Bratescu, 齋藤永宏

    平成24年度表面技術若手研究者・技術者研究交流発表会  2012.12.10 

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    Venue:名古屋市工業研究所  

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  1054. 酸素還元活性発現を目指した金属フリー窒素ドープカーボンの合成, 第72回応用物理学会学術講演会 International conference

    秋山慎太朗, 寺島千晶, 齋藤永宏, 高井治

    第72回応用物理学会学術講演会  2011.8.31 

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  1055. Theoretical reaction analysis for oxygen reduction on metal nanocluster International conference

    2012.9.23 

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  1056. 金属ナノクラスター表面における酸素還元反応の論理的解析 International conference

    森下哲典, 上野智永, 齋藤永宏

    第22回学生による材料フォーラム  2012.11.22 

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    Venue:豊橋サイエンスコア  

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  1057. 金属フリーナノカーボンによる酸素還元活性の発現 International conference

    秋山慎太朗, 寺島千晶, 齋藤永宏, 高井治

    表面技術協会第124回講演大会  2011.9.22 

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  1058. 金属フリー窒素ドープ炭素材料の合成と酸素還元活性 International conference

    秋山慎太朗, 寺島千晶, 齋藤永宏, 高井治

    平成23年度資源・素材関係学協会合同秋季大会  2011.9.26 

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  1059. 金属型CNT-CNBハイブリッド材料の開発 International conference

    大野一佳, 上野智永, 是津信行, 齋藤永宏

    表面技術協会第124回講演大会  2011.9.21 

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  1060. 集積化マイクロソリューションプラズマの生成 International conference

    齋藤永宏

    第58回応用物理学関係連合講演会  2011 

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  1061. 電子スピン共鳴法を用いた水−アルコール混合溶液中ソリューションプラズマ反応場の活性種の解明 International conference

    簾智仁, 上野智永, 齋藤永宏

    第74回応用物理学会秋季学術講演会  2013.9.16 

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    Venue:同志社大学京田辺キャンパス  

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  1062. 電極間距離の自動制御によるソリューションプラズマ反応場の精密測定 International conference

    木口崇彦, 許容康, 齋藤永宏

    第74回応用物理学会秋季学術講演会  2013.9.16 

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    Venue:同志社大学京田辺キャンパス  

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  1063. 非水系リチウム空気電池における多孔質カーボン電極の孔構造分析 International conference

    森下翔平, Li Oi Lun Helena, 齋藤永宏

    日本材料科学会 平成26年度学術講演大会  2014.6.6 

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    Venue:工学院大学 新宿キャンパス  

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  1064. 遷移金属ドープによる透明水素化アモルファスカーボン膜の色相制御と機械的特性 International conference

    齋藤永宏

    第58回応用物理学関係連合講演会  2011 

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  1065. 正極材にカーボンナノボールを用いたリチウム空気電池の放電容量と反応生成物の評価 International conference

    森下翔平, O. L. Li, 齋藤永宏

    電気化学会第81回大会  2014.3.29 

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    Venue:関西大学千里山キャンパス  

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  1066. 水がコロコロころがる表面 -超はっ水ー International conference

    齋藤永宏

    市民講座 やさしい表面科学 「水」の科学  2013.7.27  日本表面学会中部支部

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    Venue:名古屋大学  

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  1067. 水中で発生させたプラズマを用いたアルギン酸カルシウムビーズの機能化 International conference

    青木淑恵, Anyarat Watthanaphanit, 齋藤永宏

    名古屋大学若手女性研究者サイエンスフォーラム  2013.8.8 

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    Venue:名古屋大学  

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  1068. 水-アルコール混合溶液中ソリューションプラズマに反応場における生成ラジカル種の解明 International conference

    簾智仁, 上野智永, 齋藤永宏

    平成25年度表面技術若手研究者・技術者研究交流発表会  2013.12.9 

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    Venue:名古屋市工業研究所  

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  1069. 水-アルコール混合溶液中ソリューションプラズマ反応場の解明: 気/液界面への水素結合の影響 International conference

    簾智仁, 上野智永, 齋藤永宏

    2015年 第62回応用物理学会春季学術講演会  2015.3.11 

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    Venue:東海大学 湘南キャンパス  

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  1070. 液中気泡内プラズマにおける気泡サイズ揺らぎの影響, International conference

    白藤立, 齋藤永宏, 高井治

    第72回応用物理学会学術講演会  2011.8.30 

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  1071. 溶液中プラズマスパッタ法によりナノ材料の合成及び評価 International conference

    胡秀蘭, 高井治, 齋藤永宏

    表面技術協会第125回講演大会,  2012.3.14 

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  1072. 物理化学処理~液中プラズマの応用 International conference

    齋藤永宏

    第47回 化学工学の進歩講習会  2013.11.15 

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    Venue:名城大学名古屋駅サテライト  

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  1073. 異なる原料による金属フリー異元素ドープカーボン材料の合成と酸素還元活性 International conference

    秋山慎太朗, 寺島千晶, 齋藤永宏, 高井治

    第21回日本MRS学術シンポジウム  2011.12.19 

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  1074. 真空蒸着法によるチオリシコンの作製 International conference

    澤昴平, 上野智永, 是津信行, 齋藤永宏

    表面技術協会第124回講演大会  2011.9.21 

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  1075. 硫化物系固体電解質を用いた薄膜リチウムイオン電池の作製 International conference

    澤昴平, 齋藤永宏

    平成23年度資源・素材関係学協会合同秋季大会  2011.9.26 

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  1076. 窒素含有カーボン材料の合成に辺り、窒素量や窒素配置の制御 International conference

    玄光龍, 上野智永, 齋藤永宏

    一般社団法人表面技術協会 第129回講演大会  2014.3.13 

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    Venue:東京理科大学  

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  1077. 第一原理計算を用いた酸素還元反応に対する白金の触媒性起源解明 International conference

    森下哲典, 上野智永, 齋藤永宏

    平成27年度表面技術若手研究者・技術者研究交流発表会  2015.12.7 

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    Venue:名古屋市工業研究所  

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  1078. 粉砕処理したセルロースのソリューションプラズマによる分解 International conference

    根本心平, ワッタナパニット アンヤラット, 齋藤永宏

    平成27年度資源・素材関係学協会合同秋季大会  2015.9.8 

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    Venue:愛媛大学  

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  1079. 紫外光電子分光法による金属ナノ粒子の電子状態とその粒径依存性 International conference

    水下昌樹, 上野智永, 齋藤永宏

    第128回表面技術協会  2013.9.24 

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    Venue:福岡工業大学  

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  1080. 自己組織化メタルドットアレイの作製とフローティングナノドットメモリへの応用 International conference

    鷲見竜太郎, 細井卓治, 渡辺平治, 胡周蘭, 高井治, 齋藤永宏, 是津信行

    表面技術協会第124回講演大会  2011.9.22 

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  1081. 自己組織化メタルナノドットアレイの作製及びフローティングナノドットメモリへの応用 International conference

    鷲見竜太郎, 是津信行, 上野智永, 齋藤永宏, 細井卓治, 渡辺平司

    日本金属学会2012年春期大会  2012.3.28 

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  1082. 自己組織化メタルナノドットアレイの作製及びフローティングナノドットメモリへの応用 International conference

    鷲見竜太郎, 是津信行, 上野智永, 細井卓治, 渡辺平治, 高井治, 齋藤永宏

    表面技術協会第125回講演大会,  2012.3.13 

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  1083. 自己組織化メタルナノドットアレイの作製及びフローティングナノドットメモリへの応用 International conference

    鷲見竜太郎, 上野智永, 是津信行, 細井卓治, 渡部平司, 高井治, 齋藤永宏

    平成23年度表面技術若手研究者・技術者研究交流発表会  2011.11.28 

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  1084. 葉を用いたナノ粒子担持体の作製と評価 International conference

    吉田修平, ワッタナパニット アンヤラット, 齋藤永宏

    第64回高分子討論会  2015.9.15 

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    Venue:東北大学川内キャンパス  

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  1085. 蓮の葉に学ぶ超撥水膜とプラズマ技術 International conference

    齋藤 永宏

    日本真空学会関西支部&日本表面科学会関西支部合同セミナー2012  2012.7.6 

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    Venue:神戸大学百年記念館  

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  1086. 蓮の葉に学ぶ超撥水膜とプラズマ技術 International conference

    齋藤 永宏

    日本真空学会関西支部&日本表面科学会関西支部合同セミナー2012  2012.7.6 

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    Venue:神戸大学百年記念館  

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  1087. 薄層カーボンコーティングしたメソポーラスシリカの酸素還元電極触媒活性の向上 International conference

    パヌフォン・ポタワン, 齋藤永宏

    第22回日本MRS学術シンポジウム  2012.9.23 

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    Venue:ワールドポーターズ(横浜)  

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  1088. 薄層カーボンコーティングしたメソポーラスシリカの酸素還元電極触媒活性の向上 International conference

    パヌフォン・ポタワン, 齋藤永宏

    第22回日本MRS学術シンポジウム  2012.9.23 

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    Venue:ワールドポーターズ(横浜)  

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  1089. 表面処理によるエバネッセント光吸光ガスセンサーの感度向上 International conference

    伊澤昂汰, リ オイルン、マリア, アントワネッタ ブラテスク, 齋藤永宏, K. Izawa, O. L. Li, Maria.A.Bratescu, N. Saito

    表面技術協会132回講演大会  2015.9.9 

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    Venue:信州大学  

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  1090. 表面処理による光ファイバーアンモニアガスセンサーの感度向上 International conference

    伊澤昂汰, リ オイルン、マリア, アントワネッタ ブラテスク, 齋藤永宏, K. Izawa, O. L. Li, Maria.A.Bratescu, N. Saito

    セラミックス協会第28回秋季シンポジウム  2015.9.16 

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    Venue:富山大学  

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  1091. 表面処理を利用した高感度光ファイバーセンサーの開発 International conference

    木口崇彦, 伊澤昂汰, リ オイルン, 齋藤永宏

    第62回応用物理学会春季学術講演会  2015.3.11 

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    Venue:東海大学湘南キャンパス  

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  1092. 表面官能基の異なるSAM表面におけるペプチド吸着挙動 International conference

    渡会冬樹, 上野智永, 是津信行, 寺島千晶, 齋藤永宏, 高井治

    第21回日本MRS学術シンポジウム  2011.12.19 

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  1093. 赤外加熱CVDにより合成したCNBの特性評価 International conference

    齋藤永宏

    第58回応用物理学関係連合講演会  2011 

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  1094. 透明炭素膜の色相制御とその物性評価 International conference

    齋藤永宏

    表面技術協会第123回講演大会  2011 

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  1095. 次世代電池正極材料の開発 International conference

    齋藤永宏

    第7回グリーンモビリティ連携研究センター公開シンポジウム「次世代電池技術の可能性と未来」  2012.11.28 

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    Venue:ポートメッセ名古屋  

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  1096. デュアルマイクロ波プラズマ源CVDにより作製した窒化炭素膜の評価 International conference

    猪飼治, 木口崇彦, Maria-Antoaneta Bratescu, 齋藤永宏

    第128回表面技術協会  2013.9.24 

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    Venue:福岡工業大学  

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  1097. デュアルマイクロ波プラズマ源CVDにより合成した窒化炭素膜の評価 International conference

    猪飼治

    第23回学生による材料フォーラム  2013.11.1 

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    Venue:名古屋大学 アトリウム ホワイエ  

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  1098. デュアルマイクロ波プラズマ源CVDによる窒化炭素膜の作製と評価 International conference

    猪飼治, Maria-Antoaneta Bratescu, 齋藤永宏

    第22回学生による材料フォーラム  2012.11.22 

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    Venue:豊橋サイエンスコア  

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  1099. デュアルマイクロ波プラズマ源CVDを用いた窒化炭素膜の合成 International conference

    猪飼治, 木口崇彦, Maria Bratescu, 齋藤永宏

    第74回応用物理学会秋季学術講演会  2013.9.16 

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    Venue:同志社大学京田辺キャンパス  

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  1100. デュアルマイクロ波プラズマ源CVDを用いた窒化炭素膜の合成 International conference

    木口崇彦, 猪飼治, 齋藤永宏

    資源・素材学会平成26年度春季大会  2014.3.26 

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    Venue:東京大学生産技術研究所  

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  1101. デュアルマイクロ波プラズマ源CVDを用いた窒化炭素膜の合成 International conference

    木口崇彦, 猪飼治, 齋藤永宏

    第61回応用物理学会春季学術講演会  2014.3.17 

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    Venue:青山学院大学相模原キャンパス  

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  1102. ナノ流体における金ナノ粒子の大きさと形が熱伝導率に及ぼす影響 International conference

    加藤 諒, 許容康, アンヤラット・ワタナファニット, 齋藤 永広

    第22回日本MRS学術シンポジウム  2012.9.23 

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    Venue:ワールドポーターズ(横浜)  

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  1103. ナノ流体における金ナノ粒子の大きさと形が熱伝導率に及ぼす影響 International conference

    加藤 諒, 許容康, アンヤラット・ワタナファニット, 齋藤 永広

    第22回日本MRS学術シンポジウム  2012.9.23 

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    Venue:ワールドポーターズ(横浜)  

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  1104. ナノ流体の熱伝導率における粒子形状が及ぼす影響 International conference

    加藤諒, 許容康, アンヤラット・ワタナファニット, 齋藤永宏

    第22回学生による材料フォーラム  2012.11.22 

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    Venue:豊橋サイエンスコア  

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  1105. ナノ粒子単一分散系の作製と熱的特性の評価 International conference

    加藤 諒, Anyarat Watthanaphanit, 齋藤永宏

    表面技術協会 第128回講演大会  2012.9.27 

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    Venue:室蘭工業大学  

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  1106. ナノ粒子単一分散系の作製と熱的特性の評価 International conference

    加藤 諒, Anyarat Watthanaphanit, 齋藤永宏

    表面技術協会 第128回講演大会  2012.9.27 

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    Venue:室蘭工業大学  

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  1107. ナフタレンおよびアントラセンの微量添加によるソリューションプラズマ合成カーボン材料の導電性向上 International conference

    リフンソン, 上野智永, 齋藤永宏

    平成27年度(2015年) 弟132回表面技術学会春季大会  2015.9.9 

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    Venue:信州大学  

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  1108. ハロゲン化合物を用いたソリューションプラズマによる炭素材料の合成 International conference

    林宏樹, Helena Oi Lun Li, 齋藤永宏

    日本金属学会2013年秋期(第153回)講演大会  2013.9.17 

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    Venue:金沢大学角間キャンパス  

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  1109. ハロゲン化合物を用いたソリューションプラズマによる炭素材料の合成 International conference

    林宏樹, O. L. Li, 齋藤永宏

    平成25年度表面技術若手研究者・技術者研究交流発表会  2013.12.9 

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    Venue:名古屋市工業研究所  

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  1110. ハロゲン化合物添加有機溶媒系からのソリューションプラズマによる炭素材料の合成 International conference

    林宏樹, Helena Oi Lun Li, 齋藤永宏

    2013年電気化学秋季大会  2013.9.27 

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    Venue:東京工業大学大岡山キャンパス  

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  1111. ハロゲン系化合物を原料にしたソリューションプラズマによる導電性炭素材料の合成 International conference

    林宏樹, O. L. Li, 齋藤永宏

    日本化学会第94春季年会  2014.3.27 

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    Venue:名古屋大学 東山キャンパス  

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  1112. バイアス印加アークイオンプレイティング法を用いて成膜したa-Cフィルムの機械的性質 International conference

    李熏聲, 上野智永, 是津信行, 齋藤永宏, 高井治

    資源・素材学会 平成24年度(2012年)春季大会  2012.3.26 

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  1113. プラズマを用いた超撥水・超親水表面の作製 International conference

    齋藤永宏

    第84回表面科学研究会 日本真空学会2015年1月研究例会  2015.1.23 

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    Venue:機械振興会館  

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  1114. プローブによるソリューションプラズマの解析 International conference

    木口崇彦, 油家大輝, 齋藤永宏

    日本材料科学会 平成26年度学術講演大会プログラム  2014.6.6 

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    Venue:工学院大学 新宿キャンパス  

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  1115. ヘテロ構造ゲルを媒体に用いた反応拡散系におけるパターン形成 International conference

    上野智永, 齋藤永宏, 吉田亮

    第60回高分子討論会  2011.9.29 

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  1116. ペプチド吸着におけるアミノ酸配列と表面官能基の影響 International conference

    渡会冬樹, 上野智永, 是津信行, 寺島千晶, 齋藤永宏, 高井治

    平成23年度表面技術若手研究者・技術者研究交流発表会  2011.11.28 

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  1117. ペプチド吸着における表面の濡れ性及び表面官能基の影響 International conference

    渡会冬樹, 上野智永, 是津信行, 寺島千晶, 齋藤永宏, 高井治

    第60回高分子討論会  2011.9.29 

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  1118. ペンシル型水中プラズマ発生装置の開発と評価 International conference

    小山啓輔, Oi Lun LI, 齋藤永宏

    第39回静電気学会全国大会  2015.9.24 

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    Venue:首都大学東京  

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  1119. マイクロ波プラズマCVDによる窒化炭素の合成 International conference

    平田泰章, 上野智永, 齋藤永宏

    第132回表面技術協会  2015.9.9 

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    Venue:信州大学 長野(工学)キャンパス  

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  1120. マイクロ波プラズマCVD法による窒化炭素膜合 International conference

    伊澤昂汰, 木口崇彦, 齋藤永宏

    日本材料科学会 平成26年度学術講演大会  2014.6.6 

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    Venue:工学院大学 新宿キャンパス  

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  1121. メソポーラスシリカ担持Pt 触媒の合成とPROX 反応触媒特性 International conference

    青木淑恵, 是津信行, 山本剛久, 南部宏暢, 齋藤永宏

    表面技術協会第131 回講演大会  2015.3.4 

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    Venue:関東学院大学  

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  1122. ラングミュアプローブによるソリューションプラズマの計測 International conference

    市川 洋平, Maria-Antoaneta Bratescu, 齋藤永宏

    第22回学生による材料フォーラム  2012.11.22 

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    Venue:豊橋サイエンスコア  

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  1123. ラングミュアプローブ法によるソリューションプラズマの診断 International conference

    市川洋平, Maria-Antoaneta Bratescu, 齋藤永宏

    表面技術協会 第126回講演大会  2012.9.27 

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    Venue:室蘭工業大学  

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  1124. ラングミュアプローブ法によるソリューションプラズマの診断 International conference

    市川洋平, Maria-Antoaneta Bratescu, 齋藤永宏

    表面技術協会 第126回講演大会  2012.9.27 

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    Venue:室蘭工業大学  

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  1125. リチウムイオン電導体の電子状態制御 International conference

    澤 昂平, Maria-Antoaneta Bratescu, 齋藤 永宏

    第4回マイクロ・ナノ工学シンポジウム  2012.10.22 

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    Venue:北九州国際会議場  

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  1126. リチウム空気電池のCu-Fe触媒担持カーボン電極材料の作製 International conference

    高橋亮, Oi Lun Li Helena, 齋藤永宏

    2013年電気化学秋季大会  2013.9.27 

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    Venue:東京工業大学大岡山キャンパス  

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  1127. リチウム空気電池のCu-Fe触媒担持カーボン電極材料の合成と評価 International conference

    高橋亮, O. L. Li, 齋藤永宏

    日本金属学会2014年春期(第154回)講演大会  2014.3.21 

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    Venue:東京工業大学大岡山キャンパス  

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  1128. リチウム空気電池正極材料としてのメソポアカーボン担体の合成 International conference

    ジュン カン, Helena Li Oi Lun, 齋藤永宏

    第73回応用物理学会学術講演会  2012.9.11 

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    Venue:愛媛大学城北地区  

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  1129. リチウム空気電池正極材料としてのメソポアカーボン担体の合成 International conference

    ジュン カン, Helena Li Oi Lun, 齋藤永宏

    第73回応用物理学会学術講演会  2012.9.11 

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    Venue:愛媛大学城北地区  

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  1130. 分光法によるメソポーラスシリカ細孔内制御水の調査 International conference

    齋藤永宏

    第58回応用物理学関係連合講演会  2011 

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  1131. 分光法を用いたメソポーラスシリカ細孔内水の振動解析 International conference

    青木淑恵, 上野智永, M. A. Bratescu, 是津信行, 齋藤永宏

    表面技術協会第124回講演大会,  2011.9.22 

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  1132. 分子軌道法による金属ナノクラスター上酸素還元過程解析 International conference

    森下哲典, 上野智永, 齋藤永宏

    第151回日本金属学会  2012.9.17 

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    Venue:愛媛大学城北地区  

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  1133. 分子軌道法による金属ナノクラスター上酸素還元過程解析 International conference

    森下哲典, 上野智永, 齋藤永宏

    資源素材学会 平成24年度秋期大会  2012.9.11 

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    Venue:秋田大学  

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  1134. 分子軌道法を用いた金属ナノクラスター表面での酸素還元反応の解析 International conference

    森下哲典, 上野智永, 齋藤永宏

    表面技術協会 第126回講演大会  2012.9.27 

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    Venue:室蘭工業大学  

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  1135. 分子軌道法計算による金属ナノクラスターの構造安定性と反応性に関する解析 International conference

    森下哲典, 上野智永, 齋藤永宏

    日本金属学会2013年秋期(第153回)講演大会  2013.9.17 

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    Venue:金沢大学角間キャンパス  

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  1136. 回路構造を利用したソリューションプラズマの特性制御 International conference

    Heo Yongkang, 木口崇彦, 齋藤永宏

    第74回応用物理学会秋季学術講演会  2013.9.16 

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    Venue:同志社大学京田辺キャンパス  

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  1137. 固体電解質の電子状態制御 International conference

    澤 昂平, Maria-Antoaneta Bratescu, 齋藤永宏

    平成24年度表面技術若手研究者・技術者研究交流発表会  2012.12.10 

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    Venue:名古屋市工業研究所  

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  1138. 大気圧プラズマと気相成長法を用いた超はっ水膜の作製 International conference

    藤本大地, 高橋英昭, 上野智永, 是津信行, 高井治, 齋藤永宏

    表面技術協会第125回講演大会,  2012.3.14 

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  1139. 大気圧プラズマと熱処理を用いた超はっ水膜の作製 International conference

    藤本大地, 高橋英昭, 上野智永, 是津信行, 高井治, 齋藤永宏

    平成23年度表面技術若手研究者・技術者研究交流発表会  2011.11.28 

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  1140. 密度汎関数法による金属ナノクラスター表面上酸素還元反応機構の解析 International conference

    森下哲典, 上野智永, 齋藤永宏

    第128回表面技術協会  2013.9.24 

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    Venue:福岡工業大学  

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  1141. 振動反応による反応場制御による有機/無機ハイブリッド材料お創製 International conference

    簾智仁, 上野智永, 是津信行, 齋藤永宏

    表面技術協会第124回講演大会,  2011.9.22 

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  1142. 振動反応による反応場制御による有機/無機ハイブリッド材料の創製 International conference

    簾智仁, 上野智永, 是津信行, 齋藤永宏

    第60回高分子討論会  2011.9.30 

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  1143. 機能性表面におけるペプチド吸着挙動の分析 International conference

    渡会冬樹, 上野智永, 是津信行, 寺島千晶, 齋藤永宏, 高井治

    表面技術協会第124回講演大会  2011.9.21 

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  1144. 次世代触媒・電池の開発 International conference

    齋藤永宏

    第10回次世代自動車公開シンポジウム「モビリティ・イノベーション」  2013.3.20 

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    Venue:名古屋大学  

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  1145. デュアルマイクロ波プラズマ源CVD による窒化炭素膜の作製と評価 International conference

    猪飼 治, Y. Heo, M, A. Bratescu, 齋藤永宏

    表面技術協会 第127回講演大会  2013.3.18 

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    Venue:日本工業大学  

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  1146. ソリューションプラズマの展望 International conference

    齋藤 永宏

    スパッタリングおよびプラズマプロセス技術部会第128回定例研究会  2012.5.29 

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    Venue:名古屋大学ベンチャービジネスラボラトリ  

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  1147. ソリューションプラズマの電気化学測定法による分析 International conference

    加藤諒

    第23回学生による材料フォーラム  2013.11.1 

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    Venue:名古屋大学 アトリウム ホワイエ  

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  1148. ソリューションプラズマを利用した金属空気電極用ナノカーボン物質の合成 International conference

    カン ジュン, 上野智永, 是津信行, 高井治, 齋藤永宏

    表面技術協会第124回講演大会  2011.9.21 

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  1149. ソリューションプラズマを用いたPdナノ粒子の合成と分散特性 International conference

    趙星彪, 齋藤永宏, 高井治

    表面技術協会第124回講演大会  2011.9.21 

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  1150. ソリューションプラズマを用いたカテキン修飾キトサンの合成 International conference

    近藤悠介, ワッタナパニット アンヤラット, 齋藤永宏

    第64回高分子討論会  2015.9.15 

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    Venue:東北大学  

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  1151. ソリューションプラズマを用いたカーボン材料の表面修飾と分散性の向上 International conference

    上野智永, 野口陽平, 是津信行, 高井治, 齋藤永宏

    表面技術協会第124回講演大会  2011.9.22 

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  1152. ソリューションプラズマを用いたセルロースの分解 International conference

    根本心平, アンヤラット・ワッタナパーニット, 齋藤永宏

    資源素材学会 平成24年度秋期大会  2012.9.11 

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    Venue:秋田大学  

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  1153. ソリューションプラズマを用いたセルロースの分解 International conference

    根本心平, アンヤラット・ワッタナパーニット, 齋藤永宏

    資源素材学会 平成24年度秋期大会  2012.9.11 

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    Venue:秋田大学  

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  1154. ソリューションプラズマを用いたナノ材料プロセス International conference

    齋藤 永宏

    先端化学・材料技術部会 新素材分科会講演会  2012.5.22 

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    Venue:新化学技術推進協会, 東京  

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  1155. ソリューションプラズマを用いたナノ材料プロセス International conference

    齋藤 永宏

    先端化学・材料技術部会 新素材分科会講演会  2012.5.22 

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    Venue:新化学技術推進協会, 東京  

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  1156. ソリューションプラズマを用いたメソポーラスカーボンの合成 International conference

    吉田彰仁, 上野智永, 齋藤永宏

    第25回日本MRS年次大会  2015.12.8 

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    Venue:横浜市開港記念館  

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  1157. ソリューションプラズマを用いたメソポーラスシリカ細孔内での銀ナノクラスター合成 International conference

    谷田優也, 上野智永, 是津信行, 齋藤永宏

    平成23年度表面技術若手研究者・技術者研究交流発表会  2011.11.28 

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  1158. ソリューションプラズマを用いた多層カーボンナノチューブのニトロ化処理とアミノ化処理プロセス International conference

    齋藤永宏

    第58回応用物理学関係連合講演会  2011 

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  1159. ソリューションプラズマを用いた金ナノ流体の合成での電圧効果 International conference

    許容康, 上野智永, 是津信行, 齋藤永宏

    表面技術協会第124回講演大会  2011.9.21 

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  1160. ソリューションプラズマを用いた金属の還元および還元種の解析 International conference

    加藤諒, 木口崇彦, 齋藤永宏

    第74回応用物理学会秋季学術講演会  2013.9.16 

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    Venue:同志社大学京田辺キャンパス  

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  1161. ソリューションプラズマを用いた銀ナノクラスター担持メソポーラスシリカ触媒の作製 International conference

    谷田優也, 是津信行, 上野智永, 齋藤永宏

    表面技術協会第124回講演大会  2011.9.22 

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  1162. ソリューションプラズマを用いた高分子複合材料の合成 International conference

    根本心平, アンヤラット ワッタナパニット, 齋藤永宏

    第64回高分子学会年次大会  2015.5.27 

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    Venue:札幌コンベンションセンター  

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  1163. ソリューションプラズマプロセスにより作製したPtナノ粒子担持グラフェン International conference

    定末佳祐, 是津信行, 上野智永, 高井治, 齋藤永宏

    第72回応用物理学会学術講演会  2011.8.29 

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  1164. ソリューションプラズマプロセスによる窒素とホウ素の異種元素ドーピング2Dカーボン材料の合成

    李 承效, 上野 智永, 齋藤 永宏

    第131回表面技術協会  2015.3.4 

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    Language:Japanese   Presentation type:Poster presentation  

    Venue:関東学院大学 横浜・金沢八景キャンパス  

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  1165. ソリューションプラズマプロセスによる金シングルナノ粒子合成 International conference

    油家大輝, 許容康, 木口崇彦, 齋藤永宏

    日本金属学会2014年春期(第154回)講演大会  2014.3.21 

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    Language:Japanese   Presentation type:Poster presentation  

    Venue:東京工業大学大岡山キャンパス  

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  1166. ソリューションプラズマプロセスを用いたPtナノ粒子担持グラフェンの作製 International conference

    定末佳祐, 是津信行, 上野智永, 齋藤永宏

    表面技術協会第124回講演大会  2011.9.21 

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  1167. ソリューションプラズマプロセスを用いたセルロース分解機構の解明 International conference

    根本心平, アンヤラットワタナファニット, 齋藤永宏

    第22回学生による材料フォーラム  2012.11.22 

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    Venue:豊橋サイエンスコア  

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  1168. ソリューションプラズマプロセッシングによるアルギン酸塩のスルホ化 International conference

    青木淑恵, Anyarat Watthanaphanit, 齋藤永宏

    第62回高分子討論会  2013.9.11 

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    Venue:金沢大学角間キャンパス  

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  1169. ソリューションプラズマ処理した酸化チタン電極の電気化学特性 International conference

    寺島千晶, 永田章, 岩井雄二郎, 齋藤永宏, 高井治

    2011年電気化学秋季大会  2011.9.10 

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  1170. ソリューションプラズマ分子技術 International conference

    齋藤永宏

    日本材料科学会主催 平成26年度学術講演大会  2014.6.6 

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    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:工学院大学(新宿キャンパス)  

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  1171. ソリューションプラズマ分子技術 International conference

    齋藤永宏

    日本材料科学会主催 平成26年度学術講演大会  2014.6.6 

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    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:工学院大学(新宿キャンパス)  

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  1172. ソリューションプラズマ分子技術 International conference

    齋藤永宏

    セラミックス協会 第27回 秋季シンポジウム  2015.9.9 

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    Venue:鹿児島大学  

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  1173. ソリューションプラズマ分子技術による電池材料の開発 International conference

    上野智永

    表面技術協会 関東支部・第86回講演会  2013.11.29 

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    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:信州大学  

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  1174. ソリューションプラズマ分子技術~ヘテロ系カーボン触媒の創成 International conference

    上野智永, 齋藤永宏

    2014年度先端化学セミナー ―界面の修飾および制御による高機能化―  2015.1.15 

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    Venue:じばさん三重  

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  1175. ソリューションプラズマ反応場におけるヘテロカーボン生成機構の解明 International conference

    簾智仁, 上野智永, 齋藤永宏

    日本化学会第94春季年会  2014.3.27 

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    Venue:名古屋大学 東山キャンパス  

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  1176. ソリューションプラズマ合成カーボン材料の細孔構造制御 International conference

    吉田彰仁, 上野智永, 齋藤永宏

    第132回講演大会 表面技術協会  2015.9.9 

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    Venue:信州大学 工学(長野)キャンパス  

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  1177. ソリューションプラズマ場における金ナノクラスター合成のための水のかご効果の分析 International conference

    藤本大地, 上野智永, 是津信行, 高井治, 齋藤永宏

    平成23年度資源・素材関係学協会合同秋季大会  2011.9.26 

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  1178. ソリューションプラズマ法によるグラフェンの化学修飾 International conference

    津田典明, 上野智永, 是津信行, 齋藤永宏

    第58回材料と環境討論会  2011.9.30 

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  1179. ソリューションプラズマ法より燃料電池用触媒の合成とその評価 International conference

    胡秀蘭, 高井治, 齋藤永宏

    表面技術協会第124回講演大会  2011.9.21 

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  1180. ソリューションンプラズマプロセスを用いたAu超微粒子合成 International conference

    油家大輝, 許 容康, 木口崇彦, 齋藤永宏

    日本材料科学会 平成26年度学術講演大会  2014.6.6 

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    Venue:工学院大学 新宿キャンパス  

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  1181. デュアルマイクロ波プラズマCVDによる窒化炭素膜の合成 International conference

    平田泰章, 上野智永, 齋藤永宏

    表面技術協会第131回講演大会  2015.3.4 

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    Venue:関東学院大学 横浜・金沢八景キャンパス  

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  1182. デュアルマイクロ波プラズマ源CVD による窒化炭素膜の作製と評価 International conference

    猪飼 治, Maria-Antoaneta Bratescu, 齋藤永宏

    表面技術協会 第129回講演大会  2012.9.27 

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    Venue:室蘭工業大学  

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  1183. デュアルマイクロ波プラズマ源CVD による窒化炭素膜の作製と評価 International conference

    猪飼 治, Maria-Antoaneta Bratescu, 齋藤永宏

    表面技術協会 第129回講演大会  2012.9.27 

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    Venue:室蘭工業大学  

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  1184. ソリューションプラズマの展望 International conference

    齋藤 永宏

    スパッタリングおよびプラズマプロセス技術部会第128回定例研究会  2012.5.29 

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    Venue:名古屋大学ベンチャービジネスラボラトリ  

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  1185. エバネセント吸光原理に基づくアルコールセンサの開発 International conference

    水谷隼大, リオイルン, ブラテスク マリア, 齋藤永宏

    セラミックス協会第28回秋季シンポジウム  2015.9.16 

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    Venue:富山大学  

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  1186. クモ膜下出血後の脳血管攣縮に対する新たな薬剤送達システムの構築 -薬剤含有生体吸収膜シートのプラズマ照射による薬剤放出制御の試み- International conference

    入江恵子, 青木淑恵, 木口崇彦, Anyarat Watthanaphanit, 齋藤永宏, 廣瀬雄一

    STROKE2014 第30回スパズム・シンポジウム  2014.3.13 

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    Venue:大阪国際会議場  

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  1187. シリカナノ細孔内における水のクラスター構造の調査 International conference

    青木淑恵, 上野智永, 是津信行, 齋藤永宏

    2012年春季 第59回応用物理学関係連合講演会  2012.3.17 

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  1188. シリカナノ細孔内水の分光学的調査 International conference

    青木淑恵, ブラテスク マリア, アントアネッタ, 上野智永, 是津信行, 齋藤永宏

    平成23年度資源・素材関係学協会合同秋季大会  2011.9.26 

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  1189. ソリューションプラズマとその応用 International conference

    齋藤 永宏

    第8回高機能ナノ材料研究会  2012.4.3 

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    Venue:あいち産業科学技術総合センター  

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  1190. ソリューションプラズマとその応用 International conference

    齋藤 永宏

    第8回高機能ナノ材料研究会  2012.4.3 

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    Venue:あいち産業科学技術総合センター  

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  1191. ソリューションプラズマにより合成したAu-Agナノ粒子の構造特徴 International conference

    趙星彪, 齋藤永宏, 高井治

    第72回応用物理学会学術講演会  2011.8.29 

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  1192. ソリューションプラズマにより合成したAuナノ粒子のHRTEM評価 International conference

    齋藤永宏

    第58回応用物理学関係連合講演会  2011 

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  1193. ソリューションプラズマにより合成したPdナノ粒子の構造研究 International conference

    趙星彪, 齋藤永宏, 高井治

    2012年春季 第59回応用物理学関係連合講演会  2012.3.16 

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  1194. ソリューションプラズマにより合成したナノ粒子触媒によるリチウム空気電池の劣化防止 International conference

    岩井雄二郎, 寺島千晶, 趙星彪, 齋藤永宏, 高井治

    第58回材料と環境討論会  2011.9.28 

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  1195. ソリューションプラズマにより合成した金-白金ナノ粒子担持カーボンの合成とリチウム空気電池への応用 International conference

    岩井雄二郎, 寺島千晶, 趙星彪, 齋藤永宏, 高井治

    第21回学生による材料フォーラム  2011.12.1 

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  1196. ソリューションプラズマにより合成した金ナノ粒子担持カーボンの電極特性とリチウム空気電池への応用 International conference

    岩井雄二郎, 寺島千晶, 趙星彪, 齋藤永宏, 高井治

    2011年電気化学秋季大会  2011.9.10 

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  1197. ソリューションプラズマによるAuナノ粒子担持カーボンの合成とリチウム空気電池への応用 International conference

    齋藤永宏

    第58回応用物理学関係連合講演会  2011 

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  1198. ソリューションプラズマによるCu-Fe粒子担持カーボン材料の合成 International conference

    高橋亮, O. L. Li, 齋藤永宏

    平成25年度表面技術若手研究者・技術者研究交流発表会  2013.12.9 

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    Venue:名古屋市工業研究所  

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  1199. ソリューションプラズマによるCuFe担持カーボン電極材料の作製 International conference

    高橋亮, Oi Lun Li Helena, 齋藤永宏

    日本金属学会2013年秋期(第153回)講演大会  2013.9.17 

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    Venue:金沢大学角間キャンパス  

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  1200. ソリューションプラズマによるFe-N系カーボン触媒材料の合成と評価 International conference

    谷田優也, P. Panuphong, 齋藤永宏

    平成24年度表面技術若手研究者・技術者研究交流発表会  2012.12.10 

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    Venue:名古屋市工業研究所  

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  1201. ソリューションプラズマによるFe-N系カーボン触媒材料の合成と評価 International conference

    谷田 優也, P. Pootawang, 齋藤 永宏

    第4回マイクロ・ナノ工学シンポジウム  2012.10.22 

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    Venue:北九州国際会議場  

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  1202. ソリューションプラズマによるHMFの単一プロセス生成 International conference

    牟田幸浩, W. Anyarat, 齋藤永宏

    第64回高分子学会年次大会  2015.5.27 

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    Venue:札幌コンベンションセンター  

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  1203. ソリューションプラズマによるカーボンナノチューブ表面の化学修飾と分散性の向上 International conference

    原田大, 上野智永, 齋藤永宏

    資源・素材学会平成26年度春季大会  2014.3.26 

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    Venue:東京大学生産技術研究所  

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  1204. ソリューションプラズマによるカーボン合成における溶媒の効果 International conference

    吉田彰仁, 上野智永, 齋藤永宏

    第131回表面技術協会  2015.3.4 

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    Venue:関東学院大学 横浜・金沢八景キャンパス  

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  1205. ソリューションプラズマによるカーボン合成における溶媒の効果 International conference

    吉田彰仁, 上野智永, 齋藤永宏

    第131回表面技術協会  2015.3.4 

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    Venue:関東学院大学 横浜・金沢八景キャンパス  

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  1206. ソリューションプラズマによるカーボン合成における細孔構造制御 International conference

    吉田彰仁, 上野智永, 齋藤永宏

    平成26年度日本材料科学会学術講演大会  2015.6.6 

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    Venue:東京都新宿区西新宿1-24-2 工学院大学新宿キャンパス  

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  1207. ソリューションプラズマによるカーボン系触媒の合成 International conference

    上野智永

    グラフェンを「作る・測る・使う」技術開発の将来  2014.3.15 

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    Venue:岡山大学  

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  1208. ソリューションプラズマによるカーボン-セルロース複合体の合成 International conference

    市川洋平, O. L. Li, 齋藤永宏

    平成25年度表面技術若手研究者・技術者研究交流発表会  2013.12.9 

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    Venue:名古屋市工業研究所  

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  1209. ソリューションプラズマによるカーボン-高分子複合体の合成 International conference

    市川洋平, Oi Lun Li, 齋藤永宏

    第23回学生による材料フォーラム  2013.11.1 

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    Venue:名古屋大学 アトリウム ホワイエ  

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  1210. ソリューションプラズマによるグラファイト電極からのグラフェンの剝離 International conference

    上野智永, 李 熏聲, 齋藤永宏

    第128回表面技術協会  2013.9.24 

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    Venue:福岡工業大学  

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  1211. ソリューションプラズマによるグラフェンシートの化学修飾 International conference

    津田典明, 趙星彪, 上野智永, 是津信行, 齋藤永宏

    表面技術協会第124回講演大会  2011.9.21 

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  1212. ソリューションプラズマによるシリカ合成及びその析出形態に及ぼすpHの影響 International conference

    山本泰望, 上野智永, 是津信行, 齋藤永宏, 高井治

    表面技術協会第124回講演大会  2011.9.22 

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  1213. ソリューションプラズマによるシリカ細孔内における銀ナノ粒子の合成 International conference

    上野智永, 谷田優也, 是津信行, 齋藤永宏

    2012年春季 第59回応用物理学関係連合講演会  2012.3.16 

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  1214. ソリューションプラズマによるセルロース分解条件の探求と分解物の化学分析 International conference

    根本心平, Anyarat Watthanaphanit, 齋藤永宏

    第62回高分子討論会  2013.9.11 

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    Venue:金沢大学角間キャンパス  

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  1215. ソリューションプラズマによるナノカーボン物質の合成 International conference

    姜俊, 齋藤永宏, 高井治

    平成23年度資源・素材関係学協会合同秋季大会  2011.9.26 

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    Language:Japanese   Presentation type:Poster presentation  

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  1216. ソリューションプラズマによるナノ材料合成の進展 International conference

    寺島千晶, 齋藤永宏, 高井治

    第21回日本MRS学術シンポジウム  2011.12.20 

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  1217. ソリューションプラズマによるメソポーラスカーボンの合成 International conference

    吉田彰仁, 上野智永, 齋藤永宏

    第76回 応用物理学会秋季学術講演会  2015.9.13 

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    Venue:名古屋国際会議場  

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  1218. ソリューションプラズマによるメソポーラスシリカ細孔内の機能化とAgナノクラスター合成 International conference

    谷田優也, 上野智永, 是津信行, 齋藤永宏

    日本金属学会2012年春期大会  2012.3.28 

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  1219. ソリューションプラズマによる導電性カーボンナノ粒子材料の合成 International conference

    林 宏樹, O. L. Li, 齋藤永宏

    日本材料科学会 平成26年度学術講演大会  2014.6.6 

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    Venue:工学院大学 新宿キャンパス  

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  1220. ソリューションプラズマによる炭化水素化合物を溶媒としたカーボン合成速度の解析 International conference

    吉田彰仁, 上野智永, 齋藤永宏

    日本材料科学会 平成26年度学術講演大会  2014.6.6 

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    Venue:工学院大学 新宿キャンパス  

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  1221. ソリューションプラズマによる白金-金ナノ粒子の合成とリチウム空気電池への応用, 第21回日 International conference

    岩井雄二郎, 寺島千晶, 趙星彪, 齋藤永宏, 高井治

    第21回日本MRS学術シンポジウム  2011.12.20 

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  1222. ソリューションプラズマによる窒素含有カーボンの合成と窒素配置の計測 International conference

    玄光龍, 上野智永, 齋藤永宏

    日本化学会第94春季年会  2014.3.27 

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    Venue:名古屋大学 東山キャンパス  

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  1223. ソリューションプラズマによる触媒ナノ材料の合成 International conference

    上野智永

    日本金属学会 触媒材料研究会 ミニシンポジウム「ナノ組織制御材料の新展開」  2014.2.12 

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    Venue:NIMS, Tsukuba, Japan  

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  1224. ソリューションプラズマによる金ナノ粒子合成における水のかご効果の分析 International conference

    齋藤永宏

    第58回応用物理学関係連合講演会  2011 

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  1225. ソリューションプラズマによる金ナノ粒子生成機構の解析:水-エタノール混合溶媒効果 International conference

    簾智仁, 上野智永, 齋藤永宏

    第61回応用物理学会春季学術講演会  2014.3.17 

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    Venue:青山学院大学相模原キャンパス  

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  1226. ソリューションプラズマによる金属ナノ粒子の合成に及ぼす溶媒の影響 International conference

    上野智永, 簾智仁, 齋藤永宏

    日本金属学会2013年秋期(第153回)講演大会  2013.9.17 

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    Venue:金沢大学角間キャンパス  

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  1227. ソリューションプラズマによる電極上での物理的・化学的反応の解析 International conference

    Y. K. Heo, Maria-Antoaneta Bratescu, 齋藤永宏

    第60回応用物理学会春期学術講演会  2013.3.27 

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    Venue:神奈川工科大学  

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  1228. ソリューションプラズマの安定性に対する気泡形成過程の影響 International conference

    簾智仁, 上野智永, 齋藤永宏

    平成27年度 日本材料科学会 学術講演大会  2015.6.5 

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    Venue:工学院大学  

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  1229. エバネセント吸光原理に基づくアルコールセンサの開発 International conference

    水谷隼大, リ オイルン, ブラテスク マリア, 齋藤永宏

    表面技術協会第132回講演大会  2015.9.9 

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    Venue:信州大学  

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  1230. Synthesis of Noble Metal Nanoparticles by Plasma Sputtering in Solutions

    X. Hu, O. Takai, N. Saito

    4th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials (ISPlasma2012)  2012.3.5 

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  1231. Synthesis of Organic/Inorganic Hybrid Material by Controlling Reaction Field by Oscillating Reaction

    T. Sudare, N. Zettsu, T. Ueno, N. Saito

    15th International Conference on Thin Films  2011.11.8 

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  1232. Synthesis of palm to smart carbon materials by the solution plasma processing

    Md. Zahidul Islam, Anyarat Watthanaphanit, Nagahiro Saito

    2015.12.12 

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  1233. Synthesis of Pt Nanoparticles Supported on CNTs by Solution Plasma Sputtering Processing

    W. Yaowarat, O.L.Li, N. Saito

    6th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials / 7th International Conference on Plasma-Nano Technology & Science (ISPlasma 2014 / IC-PLANTS 2014)  2014.3.2 

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  1234. Synthesis of Silica Nanotubes by Carbon Nanotubes/CTAB Templates

    W. Yaowarat, Oi Lun Li, Nagahiro Saito

    1st International Conference on Surface Engineering (ICSE2013)  2013.11.18 

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  1235. Synthesis of Silver Nanoparticle within Mesoporous Silica by Using Solution Plasma Processing

    W. Yaowarat, P. Pootawang, N. Saito

    5th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials(ISPlasma2013)  2013.1.28 

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  1236. Synthesis of Silver Nanoparticle within Mesoporous Silica by Using Solution Plasma Processing

    W. Yaowarat, P. Pootawang, N. Saito

    The 13th International Symposium on Biomimetic Materials Processing(BMMP-13)  2013.1.22 

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  1237. Synthesis of Spherical Carbon Nanoball and its Application for Air Electrodes in Lithium/Air Batteries

    N.SAITO

    The 12th Internaional Symposium on Eco-Materials Processing and Design  2011 

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  1238. Synthesis of Structure-Controlled Carbon Nano Spheres by Solution Plasma Process by Organic Solution

    O.L.Li, J.Kang, N. Saito

    1st International Conference on Surface Engineering (ICSE2013)  2013.11.18 

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  1239. Synthesis of Structure-Controlled Carbon Nano Spheres by Solution Plasma Process under Benzene

    O.L.Li, J. Kang, N. Saito

    Joint Symposiium on Plasma and Electrostatics Technologies for Environmental Applications.  2013.5.14 

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  1240. Synthesis of ZnO Nanoparticle in Water by Solution Plasma Processing

    Shimpei Nemoto, Sang-Yul Lee, Nagahiro Saito

    6th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials / 7th International Conference on Plasma-Nano Technology & Science (ISPlasma 2014 / IC-PLANTS 2014)  2014.3.2 

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  1241. Tailoring Size and Composition of nanoparticles Synthesized in Solution Plasma

    M.A. Bratescu, T. Ueno, N. Saito

    The 5th International Symposium on Designing,Processing and Properties of Advanced Engineering Materials ISAEM-2012 and The 3rd International Symposium on Advanced Materials Development and Integration of Novel Structural Metallic and Inorganic Materials AMDI-3  2013.11.3 

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  1242. Tailoring Size and Composition of Nanoparticles Synthesized in Solution Plasma

    M. A. Bratescu, O. Takai, N. Saito

    1st International Workshop on Solution Plasma and Moleculer Technologies(SPM-1)  2013.3.6 

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  1243. The effect of Post Thermal CVD for Hardness and Ultra Water-Repellent Properties in Biomimetically-designed SiOx Film Deposited by Plasma Enhanced CVD

    N. Zettsu, D. Fujimoto, N. Saito

    IUMRS-ICEM2012  2012.9.23 

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  1244. The effect of Post Thermal CVD for Hardness and Ultra Water-Repellent Properties in Biomimetically-designed SiOx Film Deposited by Plasma Enhanced CVD

    N. Zettsu, D. Fujimoto, N. Saito

    IUMRS-ICEM2012  2012.9.23 

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  1245. The effect of water-alcohol mixture solution on the synthesis of gold nano particle by solution plasma

    Tomohito Sudare, Tomonaga Ueno, Nagahiro Saito

    2013 MRS Spring Meeting & Exibits  2013.4.1 

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  1246. The Effects of the Various Plasma Density and Temperature on the Characteristics of Gold Nanoparticles Synthesized

    Y. K. Heo, T. Kiguchi, N. Saito

    The 9th Asian-European International Conference on Plasma Surface Engineering  2013.8.25 

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  1247. The Proposal of Novel Oxygen Reduction Reaction Catalyst Supported by First-Principles Calculation International conference

    T. Morishita, T. Ueno, N, Saito

    第25回日本MRS年次大会  2015.12.8 

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    Venue:横浜情報文化センター  

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  1248. The Specificity of Platinum Electric States as Oxygen Reduction Catalyst in Fuel Cells

    T. Morishita, T. Ueno, N. Saito

    2015.5.6 

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  1249. The Surface Modification of CNT for High Dispersion in Water

    T. Ueno, H. Harada, N. Saito

    International Union of Materials Research Society (IUMRS-ICA 2013)  2013.12.16 

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  1250. Themostability of Nanofluids in Heat Transfer System

    Y. K. Heo, M. A. Bratescu, N. Saito

    5th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials(ISPlasma2013)  2013.1.28 

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  1251. Thermal Conductivity Enhancement of Colloidal Copper Nanofluid Synthesized via Solution Plasma

    P. Pootawang, N. Saito, O. Takai, S.-Y. Lee

    Twelfth International Symposium on Biomimetic Materials Processing (BMMP-12)  2012.1.26 

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  1252. Thermal Stability of Au-nanofluid Synthesized by Solution Plasma Process

    Y. K. Heo, T. Ueno, N. Zettsu, N. Saito

    Twelfth International Symposium on Biomimetic Materials Processing (BMMP-12)  2012.1.24 

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  1253. Thin film Lithium Ion Battery using Li 3PO4 Solid Electrolyte

    K. Sawa, T. Ueno, N. Zettsu, N. Saito

    International Symposium on EcoTopia Science'11  2011.12.10 

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  1254. Thin Film Lithium Ion Battery using Li3PO4 Solid Electrolyt

    K. Sawa, T. Ueno, N. Zettsu, N. Saito

    15th International Conference on Thin Films  2011.11.10 

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  1255. Transparency and Hardness Diamond-like Carbon Deposited by PECVD on Polymer

    S. Kariwa, C. Terashima, N. Saito, O. Takai

    International Symposium on EcoTopia Science'11  2011.12.10 

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  1256. Transparent DLC Films on Polycarbonate Synthesized by PECVD

    S. Kariwa, C. Terashima, N. Saito, O. Takai

    Twelfth International Symposium on Biomimetic Materials Processing (BMMP-12)  2012.1.24 

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  1257. Treatment of Non-point Sources by an Integrated Thermal Plasma System

    O.L.Li, J.S.Chang, Y. Guo, N. Saito, O. Takai

    2nd ISNPEDADM-2011  2011.11.17 

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  1258. Ultra High Sensitivity Attenuated Total Reflectance Based Ammonia Gas International conference

    Kyu-Sung Kim, Maria-Antoaneta Bratescu, Oi Lun Helena Li, Nagahiro Satio

    第8回NTTH合同シンポジウム  2015.8.8 

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    Venue:Urumqi, Xinjiang, China  

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  1259. Ultra High Sensitivity Attenuated Total Reflectance Based Ammonia Gas Sensor International conference

    Kyu-Sung Kim, Maria-Antoaneta Bratescu, Oi Lun Helena Li, Nagahiro Satio

    第25回日本MRS年次大会  2015.12.8 

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    Venue:Yokohama, Japan  

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  1260. UPS probing onto the electronic structure of size-controlled metal nanoparticles

    M. Mizushita, T. Ueno, N. Saito

    1st International Conference on Surface Engineering (ICSE2013)  2013.11.18 

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  1261. UPSによる酸素還元活性を示す金属ナノ粒子の表面電子状態解析 International conference

    水下昌樹, 上野智永, 齋藤永宏

    平成25年度表面技術若手研究者・技術者研究交流発表会  2013.12.9 

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    Venue:名古屋市工業研究所  

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  1262. Utilization of solution plasma process for biomedical application

    Anyarat Watthanaphanit, Nagahiro Saito

    2014.6.20 

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  1263. Utilization of the solution plasma process for the production of low molecular weight alginate with narrow molecular weight distribution

    A. Watthanaphanit, N. Saito

    ISAWST1 First International Symposium on Advanced Water Science and Technology  2012.11.11 

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  1264. Utilization of the Solution Plasma Process for the Production of Low Molecular Weight Alginate with Narrow Molecular Weight Distribution

    A. Watthanaphanit, N. Saito

    11th APCPST & 25th SPSM  2012.10.2 

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  1265. Utilization of the Solution Plasma Process for the Production of Low Molecular Weight Alginate with Narrow Molecular Weight Distribution

    A. Watthanaphanit, N. Saito

    5th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials(ISPlasma2013)  2013.1.28 

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  1266. Wastewater, Drinking water and Sludge-water Treatment by Solution Plasma

    O.L.Li, N.Saito, O.Takai

    Progress in new methods of water and waste water cleaning  2011.7.4 

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  1267. XAFS analysis of Ag in the Anti-Bacterial Ceramis Glaze of Sanitary Wave

    N. Isu, Y. Kato, C. Numako, N. Saito, O. Takai

    15th International Conference on Thin Films  2011.11.10 

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  1268. 「超はっ水」のふしぎ~はすの葉のように水玉コロコロ International conference

    齋藤永宏

    文化フォーラム・名古屋「可視化が拓く科学の世界(ふしぎな現象を見てみよう)」  2013.3.9 

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    Venue:名古屋大学  

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  1269. アミノカプロン酸溶液中ソリューションプラズマによるカーボンナノチューブ表面修飾機構 International conference

    原田大, 上野智永, 齋藤永宏

    平成25年度 資源・素材関係学協会合同秋季大会  2013.9.3 

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    Venue:北海道大学  

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  1270. アミノ基を高密度に導入したナノカーボン材料の表面特性 International conference

    田辺郁, カン ジュン, 山本泰望, 上野智永, 是津信行, 齋藤永宏, 高井治

    平成23年度資源・素材関係学協会合同秋季大会  2011.9.26 

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  1271. Synthesis of Nanofl uids for High Thermal Conductivity using Solution Plasma

    Y. K. Heo, O. L. Li, M. A. Bratescu, N. Saito

    IUMRS-ICA 2012  2012.8.26 

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  1272. Solution Plasma Synthesis of Gold-platinum Nanoparticles Modified carbon and Application for Lithium-air battery

    Y. Iwai, C. Terashima, S. Cho, N. Saito, O. Takai

    International Symposium on EcoTopia Science'11  2011.12.10 

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  1273. Solution Plasma Synthesis Process of Tungsten Carbide on N-doped Carbon Nanocomposite with Enhancing Catalytic ORR Activity and Durability International conference

    2014.3.21 

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  1274. Solution Plasma Synthesis Process of Tungsten Carbide on N-doped Carbon Nanocomposite with Enhancing Catalytic ORR Activity and Durability

    D.W. Kim, O.L.Li, P.Pootawang, N. Saito

    6th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials / 7th International Conference on Plasma-Nano Technology & Science (ISPlasma 2014 / IC-PLANTS 2014)  2014.3.2 

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  1275. Solution Plasma Synthesized Pt-Au Nanoparticles on Carbon and their Application for Lithium-air Battery

    Y. Iwai, C. Terashima, S.-P. Cho, N. Saito, O. Takai

    Twelfth International Symposium on Biomimetic Materials Processing (BMMP-12)  2012.1.24 

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  1276. Solution Plasma Treatment of TiO2 Nanoparticles

    C. Terashima, A. Nagata, Y. Iwai, N. Saito, O. Takai

    Nagoya Univ.-Tsinghua Univ.-Toyota Motor Corp.-Hokkaido Univ.-Univ. Electron. Sci. Tech. China Joint Symposium  2011.11.23 

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  1277. Solution Plasma-assisted Surface Functionalization of Grapheme Sheets for Enhancement of the Solubility in Water

    N. Tsuda, T. Ueno, S.P.Cho, N. Zettsu, O. Takai, N. Saito

    15th International Conference on Thin Films  2011.11.8 

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  1278. Solution Plasma-based Synthesis of Spherical Carbon Nanostructures Having Large Pore Volume for Air Cathode of Li/air Battery

    J. Kang, O. Takai, N. Saito

    15th International Conference on Thin Films  2011.11.9 

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  1279. Spectrophotometrical Analysis of Solution Plasma by Coherent Anti-Stokes Raman Spectroscopy, International Symposium on EcoTopia Science'11

    D. Fujimoto, M. A. Bratescu, T. Ueno, N. Zettsu, O.Takai, N. Saito

    Nagoya, Japan  2011.12.10 

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  1280. Spectroscopic Characterization of Specific Water in Silica Nano Pores

    Y. Aoki, T. Ueno, M.A. Bratescu, N. Zettsu, N. Saito

    15th International Conference on Thin Films  2011.11.8 

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  1281. Spectroscopic Prove of a Water Cage Effect on the Synthesis of Gold Nanoparticles by Solution Plasma

    N.SAITO

    The 12th Internaional Symposium on Eco-Materials Processing and Design  2011 

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  1282. Structural Characteristics of Metal Nanoparticles Synthesized by a Glow Discharge in Aqueous

    S. Cho, M. Bratescu, N. Saito, O. Takai

    4th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials (ISPlasma2012)  2012.3.6 

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  1283. Structural elucidation of cellulose decomposition by solution plasma process

    S. Nemoto

    ICNP-2012  2012.10.26 

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  1284. Structural Properties of Nanocarbon Materials by Solution Plasma in Water International conference

    李 熏聲, Maria-Antoaneta Bratescu, 齋藤永宏

    表面技術協会 第127回講演大会  2013.3.18 

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    Venue:日本工業大学  

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  1285. Structure Change of Solution Plasma Synthesized Carbon by Introducing Halogen Compounds

    H. Hayashi, O. L. Li, N. Saito

    International Symposium on EcoTopia Science 2013 - Innovation for Smart Sustainable Society  2013.12.13 

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  1286. Studies of Structural Characteristics of Metal Nanoparticles Fabricated by a Glow Discharge in Aqueous

    S.P. Cho, J. Hieda, N. Saito, O. Takai

    20th International Symposium on Plasma Chemistry  2011.7.25 

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  1287. Study of Ag2O doped SnO2-Graphene Nanoparticles as Possible Anode Materials for Utilizing High Performance Li-ion Batteries

    J. Sornsakdanuphap, N. Saito, O. Takai

    15th International Conference on Thin Films  2011.11.8 

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  1288. Study on Surface Modification Mechanism of the CNT by the Solution Plasma Treatment

    Hiroshi Harada, Tomonaga Ueno, Nagahiro Saito

    International Symposium on EcoTopia Science 2013 - Innovation for Smart Sustainable Society  2013.12.13 

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  1289. Study on the effect of solution plasma characteristics on the synthesized materials

    T. Kiguchi, Y. K. Heo, N. Saito

    Future Vision of Green Mobility and Advance Technologies for Realizing the Vision  2013.11.25 

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  1290. Study on the effect of solution plasma characteristics on the synthesized materials

    T. Kiguchi, Y. K. Heo, N. Saito

    1st International Conference on Surface Engineering (ICSE2013)  2013.11.18 

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  1291. Superhydrophobic coating using atmospheric plasma chemical vapor deposition International conference

    O. Ikai, Y. Heo, T. Kiguchi, N. Saito

    2013.12.9 

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  1292. Surface Modification Mechanism of the CNT by the Solution Plasma Treatment

    Hiroshi Harada, Tomonaga Ueno, Nagahiro Saito

    1st International Conference on Surface Engineering (ICSE2013)  2013.11.18 

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  1293. Surface Modification of Multi Wall Carbon Nanotube by Solution Plasma

    T. Ueno, T. Yamamoto, J. Kang, F. Tanabe, N. Zettsu, N. Saito

    4th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials (ISPlasma2012)  2012.3.5 

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  1294. Surface Properties of Nanocarbon Materials Covered with High-density Amino Functional Groupslicon

    F. Tanabe, T. Yamamoto, T. Ueno, N. Zettsu, N. Saito, O. Takai

    15th International Conference on Thin Films  2011.11.8 

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  1295. Synergistically Enhanced Electrochemical Activity (ORR) Nitrogen and Boron Doped Nanocarbon by Solution Plasma Process

    Seunghyo Lee, Tomonaga Ueno, Nagahiro Saito

    2015.5.6 

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  1296. Synethesis of Carbon-Polymer Composite Material by Solution Plasma Processing

    Y. Ichikawa, O. L. Li, N. Saito

    International Symposium on EcoTopia Science 2013 - Innovation for Smart Sustainable Society  2013.12.13 

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  1297. Synthesis and Characteristics of Metal-free Heteroatom-doped Carbon Nanoballs for Oxygen Reduction Reaction

    S. Akiyama, C. Terashima, N. Saito, O.Takai

    International Symposium on EcoTopia Science'11  2011.12.10 

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  1298. Synthesis and Characteristics of Metal-free Nitrogen Doped Nanocarbon Materials for Oxygen Reduction Reaction

    S. Akiyama, C. Terashima, N. Saito, O. Takai

    15th International Conference on Thin Films  2011.11.9 

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  1299. Synthesis and Characterization of Gold Nanoparticles Through Solution Plasma Process

    Y. K. Heo, T. Ueno, N. Zettsu, N. Saito

    15th International Conference on Thin Films  2011.11.8 

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  1300. Synthesis and Crystal Structure Control of Birnessite-type MnO2 by Solution Plasma Process and their Characterizations

    Hyemin Kim, Anyarat Watthanaphanit, Nagahiro Saito

    2015.11.29 

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  1301. Synthesis and Evaluation of Gold Nanofluids for the Improvement of Heat Transfer

    R. Kato, Y. K. Heo, N. Saito

    The 13th International Symposium on Biomimetic Materials Processing(BMMP-13)  2013.1.22 

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  1302. Synthesis and Oxygen Reduction Activity of Metal-free Nitrogen Doped Carbon Materials by Thermal CVD

    S. Akiyama, C. Terashima, N. Saito, O. Takai

    Twelfth International Symposium on Biomimetic Materials Processing (BMMP-12)  2012.1.24 

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  1303. Synthesis of Carbon Nanoballs, Covered by CNTs with Metallic Conductivity

    K. Ohno, N. Zettsu, T. Ueno, O. Takai, N. Saito

    AVS 58th International Sympposium & Exhibition  2011.11.2 

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  1304. Synthesis of Carbon Nanomaterials for Air Cathode of Li/air Battery by Solution Plasma

    J. Kang, N. Saito, O. Takai

    2011 MRS Fall Meeting & Exhibit  2011.11.28 

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  1305. Synthesis of Carbon Nitride by Dual Microwave Plasma CVD

    2015.5.6 

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  1306. Synthesis of carbon nitride films by dual microwave plasma source CVD

    O. Ikai, T. Kiguchi, M. A. Bratescu, N. Saito

    1st International Conference on Surface Engineering (ICSE2013)  2013.11.18 

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  1307. Synthesis of Catechin-modified Chitosan for Reduction 4-Nitrophenol

    Y. Kondo, A. Watthanaphanit, N. Saito

    2015.12.12 

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  1308. Synthesis of Cellulose/Graphene Composites by Modified Marcano's Method International conference

    2014.3.21 

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  1309. Synthesis of Cu-Fe as Bi-functional Catalyst with Carbon for the Application in Li-air battery

    R. Takahashi, O. L. Li, N. Saito

    International Symposium on EcoTopia Science 2013 - Innovation for Smart Sustainable Society  2013.12.13 

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  1310. Synthesis of Cu-Fe nanoparticles as Bi-functional Catalyst for Li-air battery

    R. Takahashi, O.L.Li, N. Saito

    6th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials / 7th International Conference on Plasma-Nano Technology & Science (ISPlasma 2014 / IC-PLANTS 2014)  2014.3.2 

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  1311. Synthesis of Gold Nanofluids for Improved Heat Transfer using Solution Plasma

    Y.K. Heo, M.A. Bratescu, N. Saito

    AVS  2012.10.28 

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  1312. Synthesis of Gold Nanoparticles by Solution Plasma Sputtering in Various Solvents

    X. Hu, O. Takai, N. Saito

    15th International Conference on Thin Films  2011.11.8 

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  1313. Synthesis of Graphene Forms and Carbon Onions by Solution Plasma in Water

    H. S. Lee, M. A. Bratescu, N. Saito

    1st International Workshop on Solution Plasma and Moleculer Technologies(SPM-1)  2013.3.6 

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  1314. Synthesis of Graphene Oxide by Using Solution Plasma Process in Water

    H. S. Lee, M. A. Bratescu, N. Saito

    The 13th International Symposium on Biomimetic Materials Processing(BMMP-13)  2013.1.22 

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  1315. Synthesis of Heteroatom Based ORR Catalysts with Carbon Support by Innovative Solution Plasma Process for Energy Storage System

    O. L. Li, D-W. Kim, N. Saito

    2015.6.9 

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  1316. Synthesis of Metal-free Heteroatoms Doped Carbon Materials from Different Hydrocarbon Sources for Oxygen Reduction Reaction

    S. Akiyama, C. Terashima, N. Saito, O. Takai

    Nagoya Univ.-Tsinghua Univ.-Toyota Motor Corp.-Hokkaido Univ.-Univ. Electron. Sci. Tech. China Joint Symposium,  2011.12.22 

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  1317. Synthesis of Metal-free N-doped Nanocarbon materials for Oxygen Reduction Activity

    S. Akiyama, C. Terashima, N. Saito, O. Takai

    2011 MRS Fall Meeting & Exhibit  2011.11.29 

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  1318. Synthesis of Nano-size Regulated Carbon Materials by Solution Plasma Processing

    O.L.Li, N.Saito

    2014.11.26 

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  1319. Synthesis of Nanofl uids for High Thermal Conductivity using Solution Plasma

    Y. K. Heo, O. L. Li, M. A. Bratescu, N. Saito

    IUMRS-ICA 2012  2012.8.26 

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  1320. Solution Plasma Synthesis of Gold Nanoparticles on Carbon for Lithium-air Battery Applications

    Y. Iwai, C. Terashima, S.P. Cho, N. Saito, O. Takai

    15th International Conference on Thin Films  2011.11.8 

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  1321. Preparation of Alginate Oligosaccharides by Solution Plasma Process

    A. Watthanaphanit, N. Saito

    IUMRS-ICA 2012  2012.8.26 

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  1322. Preparation of Metal Nanoparticles within Mesoporous Silica via Solution Plasma Process (SPP)

    W. Yaowarat, N. Saito

    AVS  2012.10.28 

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  1323. Preparation of Nanostructured Manganese Dioxide by Solution Plasma Processing

    H. M. Kim, A. Watthanaphanit, N. Saito

    2015.9.20 

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  1324. Preparation of Silica Nanotubes using MWCNTs/CTAB as Templates International conference

    W. Yaowarat, O.L.Li, N. Saito

    The 23rd Annual Meeting of the Material Research Society of Japan  2013.12.9 

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  1325. Production Improvement of Graphene Oxide Sheets using Solution Plasma Processing and their Modification for ORR Catalytic Activity

    G. A. Akceoglu, P. Pootawang, N. Saito

    1st International Workshop on Solution Plasma and Moleculer Technologies(SPM-1)  2013.3.6 

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  1326. Production Improvement of Graphene Oxide Sheets Using Solution Plasma Processing and Their Modifilcation for ORR Catalytic Activity

    G. A. Akceogle, P. Pootawang, N. Saito

    5th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials(ISPlasma2013)  2013.1.28 

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  1327. Production of Highly Stable Gold Nanoparticles in Alginate Aqueous Suspension by Solution Plasma Sputtering Process International conference

    Anyarat Watthanaphanit, Gasidit Panomsuwan, Nagahiro Saito

    The 23rd Annual Meeting of the Material Research Society of Japan  2013.12.9 

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  1328. Properties of Graphene Decorated with Alloy Nanoparticles for Energy Applications

    M. A. Bratescu, N. Saito

    International Symposium on EcoTopia Science 2013 - Innovation for Smart Sustainable Society  2013.12.13 

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  1329. Properties of ITO Films Prepared using Highly Dense plasma-assisted Electron Beam Evaporation( HDPE) Process

    H. Kojima, N. Saito, O. Takai

    15th International Conference on Thin Films  2011.11.8 

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  1330. Properties of Synthesized Nanoparticles through Characteristics of Solution Plasma International conference

    YongKang Heo, Maria Bratescu, Nagahiro Saito

    2012.9.11 

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  1331. Properties of Synthesized Nanoparticles through Characteristics of Solution Plasma International conference

    YongKang Heo, Maria Bratescu, Nagahiro Saito

    2012.9.11 

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  1332. PS@Au plasmonic nanoshells with conical shape for highly-sensitive NIR-light responsible LSPR sensor International conference

    N. Zettsu, S. Uchida, Y. Yamamoto, T. Ueno, N. Saito

    第21回日本MRS学術シンポジウム  2011.12.20 

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  1333. PS@Au Plasmonic Nanoshells with Conical Shape for Highly-sensitive NIR-light responsible LSPR-sensor

    N. Zettsu

    4th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials (ISPlasma2012)  2012.3.6 

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  1334. Rapid Synthesis of Conductive Carbon Nanoballs with Well Defined Pore Structures by Solution Plasma Process in Aromatic Hydrocarbo Solvent

    J. Kang, T. Ueno, N. Zettsu, O. Takai, N. Saito

    4th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials (ISPlasma2012)  2012.3.5 

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  1335. Rapid Synthesis of Highly Ordered Mesoporous Silica with Dense Hydroxyl Group Using Solution Plasma Processing for Thin Layer Carbon Coating International conference

    Panuphong Pootawang, Nagahiro Saito

    2012.9.12 

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  1336. Rapid Synthesis of Highly Ordered Mesoporous Silica with Dense Hydroxyl Group Using Solution Plasma Processing for Thin Layer Carbon Coating International conference

    P. Pootawang, N. Saito

    2012.9.12 

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  1337. Reactions of hydrocarbons in Solution Plasma

    Akihito Yoshida, Tomonaga Ueno, Nagahiro Saito

    The 14th International Symposium on Biomimetic Materials Processing (BMMP-14)  2014.1.24 

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  1338. Role of Active Species from Soluion Plasma in Controlling Nanoparticles Size

    M. Bratescu, S. Cho, O. Takai, N. Saito

    4th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials (ISPlasma2012)  2012.3.6 

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  1339. Rpidly Synthesis and Structural Characterization of Well-Defined Gold Clusters by Solution Plasma Sputtering

    X. Hu, O. Takai, N. Saito

    Joint Conference of 5th International Conference on Science and Technology for Advanced Ceramics(STAC5) and 2nd International Conference on Advanced Materials Development and Integration of Novel Stuructured Metallic and Inorganic Materials(AMDI2)  2011.6.22 

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  1340. Selective Decomposition of Organic Materials by Solution Plasma Processing

    Y. K. Heo, T. Kiguchi, N. Saito

    1st International Conference on Surface Engineering (ICSE2013)  2013.11.18 

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  1341. Selective production of sugar alcohol from cellulose by solution plasma

    Anyarat Watthanaphanit, Nagahiro Saito

    2015.1.23 

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  1342. Simple Fabrication of Spherical Metal Particles Using a Solution Plasma Process

    N.SAITO

    The 12th Internaional Symposium on Eco-Materials Processing and Design  2011 

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  1343. Simple One-Step Synthesis of Nanostructured MnO2 Colloidal Suspension by Plasma Discharge in Liquid

    Hyemin Kim, Anyarat Watthanaphanit, Nagahiro Saito

    2015.9.9 

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  1344. Single-Nano-sized Pt Cluster Supported on Graphene, Nanosheets Synthesized by Solution Plasma

    K. Sadasue, N. Zettsu, T. Ueno, N. Saito

    15th International Conference on Thin Films  2011.11.10 

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  1345. Size-controlled Gold Nanoparticles Synthesized in Solution Plasma

    M. A. Bratescu, S.-P. Cho, T. Ueno, N. Zettsu, O. Takai, N. Saito

    Twelfth International Symposium on Biomimetic Materials Processing (BMMP-12)  2012.1.24 

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  1346. Soluthion Plasma-Assisted Surface Functionalization of Chemicaly Converted Graphene Sheet toward an Enhancement of Solubility in Solution

    N. Tsuda, T. Ueno, N. Zettsu, S.P. Cho, O. Takai, N. Saito

    AVS 58th International Sympposium & Exhibition  2011.11.3 

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  1347. Solution Plasma Assisted Surface Decoration of Chemically Converted Graphene Sheet with Various Metallica Nanoparticles

    K. Sadasue, N. Zettsu, T. Ueno, O. Takai, N. Saito

    AVS 58th International Sympposium & Exhibition  2011.11.1 

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  1348. Solution Plasma for Molecular Technology -Plasma for Chemist-

    N. Saito

    The 9th Asian-European International Conference on Plasma Surface Engineering  2013.8.25 

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  1349. Solution Plasma Materials Building and Modification

    N. Saito

    1st International Conference on Surface Engineering (ICSE2013)  2013.11.18 

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  1350. Solution plasma process and its applications in biomedicine

    Anyarat Watthanaphanit, Nagahiro Saito

    2014.6.16 

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  1351. Solution plasma process and its applications.

    Anyarat Watthanaphanit, Nagahiro Saito

    2015.1.8 

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  1352. Solution Plasma Process for the Conversion of Guar Gum to Bioethanol

    S. Nemoto, A. Watthanaphanit, N. Saito

    2015.3.26 

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  1353. Solution plasma process ~ New chemical reaction field

    Nagahiro Saito

    The 12th International Symposium on Sputtering & Plasma Process  2013.7.10 

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  1354. Solution Plasma Process: from the Fundamental to Applications

    Anyarat Watthanaphanit, Nagahiro Saito

    The 8th Asia-Pacific International Symposium on the Basics and Applications of Plasma Technology (APSPT-8)  2013.12.20 

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  1355. Solution Plasma Process: From the Fundamental to its Application

    O.L.Li, N. Saito

    The 8th Asia-Pacific International Symposium on the Basics and Applications of Plasma Technology (APSPT-8)  2013.12.20 

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  1356. Solution Plasma Processing

    M. A. Bratescu, N. Saito, O. Takai

    The 8th Asian-European International Conference on Plasma Surface Engineering  2011.9.21 

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  1357. Solution Plasma Processing and its Applications

    N. Saito

    1st International Workshop on Solution Plasma and Moleculer Technologies(SPM-1)  2013.3.6 

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  1358. Solution Plasma Processing for Molecular Technology

    O.L.Li, N. Saito

    2015.7.7 

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  1359. Solution Plasma Sputtering Process for the Production of Colloidal Gold Nanoparticles in Alginate Aqueous Solution

    Anyarat Watthanaphanit, Gasidit Panomsuwan, Nagahiro Saito

    The 14th International Symposium on Biomimetic Materials Processing (BMMP-14)  2014.1.24 

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  1360. Solution Plasma Surface Modification of Nanocarbons for Nanocomposites

    T. Ueno, H. Harada, N. Saito

    1st International Conference on Surface Engineering (ICSE2013)  2013.11.18 

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  1361. Solution Plasma Synthesis of Black TiO2-x Nano/Microspheres with Enhanced Visible-Light Photocatalytic Activity

    G. Panomsuwan, N. Saito

    The 13th International Symposium on Biomimetic Materials Processing(BMMP-13)  2013.1.22 

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  1362. Solution Plasma Synthesis of Gold Nanoparticle Modified Carbon and Application for Lithium-Air Batery

    Y. Iwai, C. Terashima, S.P. Cho, N. Saito, O. Takai

    The 8th Asian-European International Conference on Plasma Surface Engineering  2011.9.21 

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  1363. Preparation of Alginate Oligosaccharides by Solution Plasma Process

    Anyarat Watthanaphanit, Nagahiro Saito

    IUMRS-ICA 2012  2012.8.26 

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  1364. Oxygen Reduction Analysis on Metal Nanocluster by First-principle Calculation

    T. Morishita, T. Ueno, N. Saito

    5th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials(ISPlasma2013)  2013.1.28 

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  1365. Oxygen Reduction Analysis on Metal Nanocluster by First-principle Calculation

    T. Morishita, T. Ueno, N. Saito

    The 13th International Symposium on Biomimetic Materials Processing(BMMP-13)  2013.1.22 

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  1366. PECVD法によりポリマー上に成膜したDLC膜の透明性と硬度の向上 International conference

    苅和慎平, 寺島千晶, 齋藤永宏, 高井治

    第21回日本MRS学術シンポジウム  2011.12.19 

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  1367. PECVD法によるポリカーボネートへの透明・硬質炭素膜の作製 International conference

    苅和慎平, 寺島千晶, 齋藤永宏, 高井治

    平成23年度表面技術若手研究者・技術者研究交流発表会  2011.11.28 

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  1368. PECVD法によるポリマー上への透明DLC膜の低温合成,第72回応用物理学会学術講演会 International conference

    苅和慎平, 寺島千晶, 齋藤永宏, 高井治

    第72回応用物理学会学術講演会  2011.9.2 

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  1369. Post Chemical Annealing Effect on Hardness of Ultra Water-repellent Films by Microwave Plasma-enhanced CVD

    D. Fujimoto, N. Zettsu, N. Saito

    IUMRS International Conference of Young Researchers on Advanced Materials 2012 (IUMRS-ICYRAM 2012)  2012.7.1 

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  1370. Post Chemical Annealing Effect on Hardness of Ultra Water-repellent Films by Microwave Plasma-enhanced CVD

    D. Fujimoto, N. Zettsu, N. Saito

    IUMRS International Conference of Young Researchers on Advanced Materials 2012 (IUMRS-ICYRAM 2012)  2012.7.1 

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  1371. Post Thermal CVD for Hardness of Ultra Water-repellent Films Deposited by Plasma-enhanced CVD Process

    D. Fujimoto, N. Zettsu, N. Saito

    IUMRS-ICA 2012  2012.8.26 

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  1372. Post Thermal CVD for Hardness of Ultra Water-repellent Films Deposited by Plasma-enhanced CVD Process

    D. Fujimoto, N. Zettsu, N. Saito

    IUMRS-ICA 2012  2012.8.26 

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  1373. Pre-treatment of Cellulose for Conversion to Product Material

    S. Nemoto, A. Watthanaphanit, N. Saito

    2015.9.20 

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  1374. Preparation and Catalytic Evaluation of Natural Leaf Supported Gold Nanoparticles

    2015.9.9 

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  1375. Preparation and Catalytic Evaluation of Natural Leaf Supported Gold Nanoparticles

    S. Yoshida, A. Watthanaphanit, N. Saito

    2015.12.12 

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  1376. Preparation and evaluation of gold with difference particle shapes and sizes

    R. Kato, Y.K. Heo, A. Watthanaphanit, N. Saito

    ISAWST1 First International Symposium on Advanced Water Science and Technology  2012.11.11 

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  1377. Preparation and Evaluation of the thermal properties of Au nanofluids

    R. Kato, Y. K. Heo, A. Wathanapahanit, N. Saito

    5th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials(ISPlasma2013)  2013.1.28 

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  1378. Orientarion Control of Textured SrTiO3 Thin Films on Platinized Al2O3 by Ion Beam Deposition

    G. Panomsuwan, N. Saito, O. Takai

    15th International Conference on Thin Films  2011.11.8 

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  1379. One-Step Synthesis of Gold Nanoparticles Stabilized in Alginate Gel Matrix using Solution Sputtering Process

    Anyarat Watthanaphanit, Gasidit Panomsuwan, Nagahiro Saito

    The 4th ResearchSymposium on Petrochemical and materials Technology and the 19th PPC Symposium on Petroleum, Petrochemicals, and Polymers 2013  2013.4.23 

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  1380. One-Step Synthesis of Magnetic Metal Nanoparticles Supported on Spherical Carbon by Solution Plasma Process

    O.L.Li, R. Takahashi, N. Saito

    The 4th ResearchSymposium on Petrochemical and materials Technology and the 19th PPC Symposium on Petroleum, Petrochemicals, and Polymers 2013  2013.4.23 

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  1381. One-step synthesis of nanocarbon-supported metal nanoparticle catalysts by modified solution plasma processing

    K. Jun, T. Ueno, N. Zettsu, O. Takai, N. Saito

    International Symposium on EcoTopia Science'11  2011.12.10 

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  1382. Optical and Electrical Properties of Graphene Decorated with Nanoparticles for Energy Applications

    M. A. Bratescu, N. Saito

    1st International Conference on Surface Engineering (ICSE2013)  2013.11.18 

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  1383. Optical Diagnostic of Solution Plasma by Broadband Absorption Spectroscopy

    H. Harada, M. A. Bratescu, Y. K. Heo, N. Saito

    1st International Workshop on Solution Plasma and Moleculer Technologies(SPM-1)  2013.3.6 

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  1384. Optical Properties and Catalytic Activity of Gold-Silver Nanoparticles Synthesized by Solution Plasma Processing

    M.A. Bratescu, T. Ueno, S.P. Cho, O. Takai, N. Saito

    IUMRS-ICEM2012  2012.9.23 

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  1385. Optical Properties and Surface radicals Interaction of Graphene Decorated with Bimetallic Nanocrystals

    M.A. Bratescu, O.Takai, N. Saito

    AVS  2012.10.28 

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  1386. Optical Transparency and Hardness of Diamond-like Carbon Deposited by PECVD under Different Hydrogen Dilutions

    S. Kariwa, C. Terashima, N. Saito, O. Takai

    The 8th Asian-European International Conference on Plasma Surface Engineering  2011.8.16 

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  1387. Organic Functional Group Modification of Graphene by Solution Plasma

    N.SAITO

    The 12th Internaional Symposium on Eco-Materials Processing and Design  2011 

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  1388. One-step Synthesis of Gold Bimetallic Nanoparticles with Various Metal Compositions

    M. A. Bratescu, N. Saito

    American Vacuum Society, 60th International Symposium  2013.10.27 

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  1389. Graphite Oxide/Cellulose Composites as Innovative Solid Support Material for DNA Extraction Applications

    O. L. Li, G.A. Akceoglu, N. Saito

    2015.5.6 

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  1390. Growth of Carbon Nanotubes from Carbon Nanoballs Surface

    K. Ohno, T. Ueno, N. Zettsu, N. Saito

    International Symposium on EcoTopia Science'11  2011.12.10 

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  1391. Growth of Metallic Carbon Naotubes From Carbon Nanoballs Surface

    K. Ohno, N. Zettsu, T. Ueno, N. Saito

    15th International Conference on Thin Films  2011.11.9 

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  1392. Hard and Transparent Diamond-like Carbon Films at Low Temperature Deposition

    S. Kariwa, C. Terashima, N. Saito, O. Takai

    15th International Conference on Thin Films  2011.11.9 

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  1393. High durable silica coated Pt/CNT for PEMFC application

    W. Yaowarat, O. L. Li, N. Saito

    2015.3.26 

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  1394. High Rate DC Reactive Sputtering of SiO2 films with a new rotary cathode

    H. Kojima, N. Saito, O. Takai

    15th International Conference on Thin Films  2011.11.8 

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  1395. High-dense Decoration of Mesoporous Silica Inner Wallswith Ag Nanoclusters through a Modified SolutionPlasma Processing

    Y. Tanida, N. Zettsu, T. Ueno, N. Saito

    15th International Conference on Thin Films  2011.11.8 

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  1396. High-dense Decoration of Mesoporous Silica with Ag Nanoclusters by Solution Plasma

    Y.Tanida, T. Ueno, N. Zettsu, N.Saito

    International Symposium on EcoTopia Science'11, Nagoya, Japan  2011.12.10 

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  1397. Highly Efficient Visible Light Driven Photocatalytic Activity of Black TiO2 x Nano Microspheres Synthesized by Solution Plasma Process

    G. Panomsuwan, N. Saito

    1st International Workshop on Solution Plasma and Moleculer Technologies(SPM1)  2013.3.6 

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  1398. HRTEM studies of Au and Pd nanoparticles Fabricated by Solution Plasma Processing, International Symposium on EcoTopia Science'11

    S.P. Cho, M. A. Bratescu, N. Saito, O. Takai

    Nagoya, Japan  2011.12.10 

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  1399. Hydrocarbon structure effect on the production of carbon materials by the solution plasma process

    A. Yoshida, T. Ueno, N. Saito

    2014.10.29 

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  1400. Hydrophobic Layered Double Hydroxide Film Formed on Magnesium Alloy toward Corrosion Protection

    T. Ishizaki, K. Teshima, N. Saito, M. Sakamoto

    20th INTERNATIONAL MATERIALS RESEARCH CONGRESS (2011)  2011.8.16 

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  1401. Hydroxyl-Rich Mesoporous Silica Synthesized Using Solution Plasma for Thin-Layer Carbon Coating

    P. Pootawang, N. Saito

    The 5th International Symposium on Designing,Processing and Properties of Advanced Engineering Materials ISAEM-2012 and The 3rd International Symposium on Advanced Materials Development and Integration of Novel Structural Metallic and Inorganic Materials AMDI-3  2012.11.5 

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  1402. Immobilization of glucose oxidase on calcium alginate bead by the aid of plasma in liquid

    Y. Kondo, A. Watthanaphanit, N, Saito

    2015.5.6 

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  1403. Improvement of the Dispersibility of CNT by Solution Plasma (SP) International conference

    Hiroshi Harada, Tomonaga Ueno, Nagahiro Saito

    2013.12.9 

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  1404. In situ Preparation of Gold Nanoparticles in Alginate Gel Matrix by Solution Plasma Sputtering Process

    Anyarat Watthanaphanit, Gasidit Panomsuwan, Nagahiro Saito

    2013 MRS Spring Meeting & Exibits  2013.4.1 

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  1405. In-situ FT-IR Study on Water Adsorption Behavior Confined In Mesoporous Silica, FSM-16, having < 2 nm Pore Diameter

    Y. Aoki, N. Zettsu, N. Saito

    2015.3.26 

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  1406. In-situ Preparation of Colloidal Gold Nanoparticles in Alginate Aqueous Solution by Solution Plasma Sputtering Process

    Anyarat Watthanaphanit, Gasidit Panomsuwan, Nagahiro Saito

    1st International Conference on Surface Engineering (ICSE2013)  2013.11.18 

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  1407. Incoporation of silver nanoparticle within mesoporous silica by using solution plasma processing

    W. Yaowarat, P. Pootawang, N. Saito

    The 6th International Conference on PLAsma Nanotechnology & Science(IC-PLANTS2013)  2013.2.2 

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  1408. Indication of Sustainable Development for Green Innovation, International Symposium on EcoTopia Science'11

    K. Urashima, O. L. Li, N. Saito, O. Takai

    Nagoya, Japan  2011.12.10 

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  1409. Influence of Amino Acid Sequence and Surface Functional Group on Peptide Adsorption

    F. Watarai, T. Ueno, N. Zettsu, C. Terashima, N. Saito, O. Takai

    Twelfth International Symposium on Biomimetic Materials Processing (BMMP-12)  2012.1.24 

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  1410. Influence of Solution Plasma Characteristics on the Synthesized Au Nanoparticles

    M.A. Bratescu, O. Takai, N. Saito

    Joint Conference of 5th International Conference on Science and Technology for Advanced Ceramics(STAC5) and 2nd International Conference on Advanced Materials Development and Integration of Novel Stuructured Metallic and Inorganic Materials(AMDI2)  2011.6.22 

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  1411. Influence of Temperature on Free Radical Generation in Water-Ethanol Mixture Based Solution Plasma Due to Hydrogen-Bonding Network

    2015.3.26 

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  1412. Introduction of Sulfated Groups to Calcium Alginate Beads Surface by Solution Plasma Process

    Yoshie Aoki, Anyarat Watthanaphanit, Nagahiro Saito

    The 4th Asian Symposium on Advanced Materials -Chemistry, Physics & Biomedicine of Functional and Novel Materials  2013.10.22 

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  1413. Investigation of Effect of Solution Plasma to Guar Gum Solution

    Shimpei Nemoto, Anyarat Watthanaphanit, Nagahiro Saito

    1st International Conference on Surface Engineering (ICSE2013)  2013.11.18 

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  1414. Kinetics in Gold Nanoparticles Formation by Solution Plasma

    T. Sudare, T. Ueno, N. Saito

    6th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials / 7th International Conference on Plasma-Nano Technology & Science (ISPlasma 2014 / IC-PLANTS 2014)  2014.3.2 

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  1415. Layer Thickness Dependence on Crystallographic and Surface Structure of SrTiO3 Base Superlattices Fabricated by Ion Beam Deposition International conference

    P. Gasidit, 上野智永, 是津信行, 齋藤永宏, 高井治

    表面技術協会第124回講演大会  2011.9.22 

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  1416. Mechanical Properties of a-C Films by Shielding Arc Ion Plating Using Bias Conditions International conference

    李 熏聲, 上野智永, 是津信行, 齋藤永宏, 高井治

    表面技術協会第125回講演大会,  2012.3.13 

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  1417. Mechanism of Au Nanoparticles Formation in Solution Plasma

    M.A. Bratescu, O. Takai, N. Saito

    AVS 58th International Symposium & Exhibition  2011.11.1 

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  1418. Microstructure Study of Metal Nanoparticles Fabricated by Solution Plasma Processing

    S. P. Cho, M. A. Bratescu, N. Saito, O. Takai

    15th International Conference on Thin Films  2011.11.9 

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  1419. Modification of Graphene Oxide Sheets for ORR Catalytic Activity by Using Solution Plasma Processing

    G. A. Akceoglu, P. Pootawang, N. Saito

    The 13th International Symposium on Biomimetic Materials Processing(BMMP-13)  2013.1.22 

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  1420. Modification of Inside the Pores of Mesoporous Silica with Ag Nanoclusters by Solution Plasma Method

    Y. Tanida, T. Ueno, N. Zettsu, N. Saito

    4th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials (ISPlasma2012)  2012.3.6 

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  1421. Morphology -controlled Synthesis of Graphitic Carbon Nanoballs by Solution Plasma Processing in Benzene

    J. Kang, O. L. Li, N. Zettsu, N. Saito

    IUMRS-ICEM2012  2012.9.23 

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  1422. Morphology and Adhesion Properties of Amorphous Carbon Films by Shielding Arc Ion Plating Using Bias Conditions International conference

    李熏聲, 齋藤永宏, 高井治

    表面技術協会第124回講演大会  2011.9.21 

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  1423. Nano-size Regulated Carbon Materials for Battery through Solution Plasma Processing

    2014.7.21 

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  1424. Nanocarbon production by solution plasma process in water

    H. Lee, M. A. Bratescu, N. Saito

    The 6th International Conference on PLAsma Nanotechnology & Science(IC-PLANTS2013)  2013.2.2 

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  1425. Nanoparticles Synthesis and Surface Modification by Solution Plasma Processing

    N. Saito

    The 3rd Research Symposium on Petrochemical and Materials Technology and The 18th PPC Symposium on Petroleum, Petrochemicals, and Polymer  2012.4.24 

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  1426. Nanoparticles Synthesis and Surface Modification by Solution Plasma Processing

    N. Saito

    The 3rd Research Symposium on Petrochemical and Materials Technology and The 18th PPC Symposium on Petroleum, Petrochemicals, and Polymer  2012.4.24 

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  1427. Nanostructured Manganese Dioxide Synthesized by Solution Plasma Processing

    H. Y. Kim, A. Watthanaphanit, N. Saito

    2015.5.6 

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  1428. Nanostructured Materials and Surfaces by Plasma Processing

    N.Saito

    ICAMN2011  2011.10.23 

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  1429. New Approach of Energy Crisis: Cellulose as a Potential Energy Resource

    O.L.Li, N. Saito, O. Takai

    International Symposium on EcoTopia Science'11  2011.12.10 

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  1430. New Class of Spherical Carbon Nanostructures for Air Cathode of Li/Air Battery Synthesized by Solution Plasma Process (SPP)

    Kang Jun, Oi Lun, Helena Li, Nobuyuki Zettsu, Osamu Takai, Nagahiro Saito

    IUMRS-ICA 2012  2012.8.26 

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  1431. Non-Platinum Catalyst Design for Fuel Cell Cathode Based on the Computational Analysis

    T. Morishita, T. Ueno, N. Saito

    2015.11.29 

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  1432. Novel Fabrication of Platinum Nanoparticles by Solution Plasma Sputtering, International Symposium on EcoTopia Science'11

    X. Hu, O. Takai, N. Saito

    Nagoya, Japan  2011.12.10 

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  1433. One Step Synthesis of Nitrogen-Containing Carbon by Plasma Discharge in Aniline and Evaluation for Oxygen Reduction Reaction

    K. Y. Hyun, T. Ueno, N. Saito

    2015.5.6 

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  1434. One-step Preparation of Ultrathin MnO2 Nanosheets by Plasma Discharge in Liquid Phase

    Hyemin Kim, Anyarat Watthanaphanit, Nagahiro Saito

    2015.12.12 

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  1435. One-Step Production of Colloidal Gold Nanoparticles in Alginate Aqueous Solution

    Anyarat Watthanaphanit, Gasidit Panomsuwan, Nagahiro Saito

    The 4th Asian Symposium on Advanced Materials- Chemistry, Physics & Biomedicine of Functional and Novel Materials  2013.10.22 

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  1436. One-Step Solution Plasma Synthesis of Birnessite-type Nanostructured MnO2 by the Addition of D-glucose and their Characterizations International conference

    Hyemin Kim, Anyarat Watthanaphanit, 齋藤永宏

    2015年日本金属学会秋期講演大会  2015.9.16 

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    Venue:九州, Japan  

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  1437. One-Step Synthesis of Gold Bimetallic Nanoparticles in Solution Plasma

    M. A. Bratescu, O. Takai, N. Saito

    21st International Symposium on Plasma Chemistry, ISPC21 - 2013,  2013.8.4 

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  1438. Graphite Oxide/Cellulose Beads for DNA Extraction Applications

    G. Akceoglu, O. Li, N. Saito

    2015.3.26 

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  1439. Disinfection and Descomposition of Chemical Compounds by Solution Plasma International conference

    Li Oi Lun, 齋藤永宏, 高井治

    表面技術協会第124回講演大会  2011.9.21 

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  1440. DSCによるナノ流体の熱伝達性能評価 International conference

    油家大輝, 木口崇彦, 齋藤永宏

    日本金属学会2013年秋期(第153回)講演大会  2013.9.17 

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    Venue:金沢大学角間キャンパス  

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  1441. Effect of Solution Plasma Treatment on Chemical Properties of Guar Gum

    Shimpei Nemoto, Anyarat Watthanaphanit, Nagahiro Saito

    The 4th Asian Symposium on Advanced Materials -Chemistry, Physics & Biomedicine of Functional and Novel Materials  2013.10.22 

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  1442. Effect of Surface Functional Groups and pH Condition on Peptide Adsorption

    F. Watarai, T. Ueno, N. Zettsu, C. Terashima, N. Saito, O. Takai

    International Symposium on EcoTopia Science'11  2011.12.10 

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  1443. Effect of Surface Functional Groups and Surface Electric Charge on Peptide Adsorption

    F. Watarai, T. Ueno, N. Zettsu, C. Terashima, N. Saito, O. Takai

    Nagoya Univ.-Tsinghua Univ.-Toyota Motor Corp.-Hokkaido Univ.-Univ. Electron. Sci. Tech. China Joint Symposium, Chengdu, China)  2011.12.22 

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  1444. Effect of Surface Wettability and Surface Functional Groups on Peptide Adsorption

    F. Watarai, T. Ueno, N. Zettsu, C. Terashima, N. Saito, O. Takai

    15th International Conference on Thin Films  2011.11.9 

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  1445. Effect of Surrounding Chemistry on the Size of Gold Nanoparticles Synthesized in Solution Plasma

    M. A. Bratescu, N. Saito, O. Takai

    International Symposium on EcoTopia Science'11  2011.12.10 

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  1446. Effect of Surrounding Chemistry on the Size of Gold Nanoparticles Synthesized in Solution Plasma

    M. A. Bratescu, O. Takai, N. Saito

    15th International Conference on Thin Films  2011.11.8 

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  1447. Effect of Surrounding on the Gold Nanoparticles Size for Biology Applications International conference

    M. A. Bratescu, N. Saito

    The 23rd Annual Meeting of the Material Research Society of Japan  2013.12.9 

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  1448. Effect of Transition-metal Doping on the Optical Properties of Carbon Thin Films

    N.SAITO

    The 12th Internaional Symposium on Eco-Materials Processing and Design  2011 

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  1449. Effects of Substrate Temperature on ITO Films using Highly Dense Plasma-assisted Electron Beam Evaporation (HDPE) Process

    H. Kojima, N. Saito, O. Takai

    15th International Conference on Thin Films  2011.11.8 

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  1450. Effects of Surfactant Type and pH on Stability and Thermal Conductivity of Au-Pt Water-Based Nanofluids

    R. Kato, A. Watthanaphanit, N. Saito

    The 3rd Research Symposium on Petrochemical and Materials Technology and The 18th PPC Symposium on Petroleum, Petrochemicals, and Polymer  2012.4.24 

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  1451. Effects of Surfactant Type and pH on Stability and Thermal Conductivity of Au-Pt Water-Based Nanofluids

    R. Kato, A. Watthanaphanit, N. Saito

    The 3rd Research Symposium on Petrochemical and Materials Technology and The 18th PPC Symposium on Petroleum, Petrochemicals, and Polymer  2012.4.24 

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  1452. Effects of Surfactant Type and pH on Stability and Thermal Conductivity of Gold-Platinum Water-Based Nanofluids

    R. Kato, A. Watthanaphanit, N. Saito

    IUMRS-ICA 2012  2012.8.26 

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  1453. Effects of Surfactant Type and pH on Stability and Thermal Conductivity of Gold-Platinum Water-Based Nanofluids

    R. Kato, A. Watthanaphanit, N. Saito

    IUMRS-ICA 2012  2012.8.26 

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  1454. Effects of the Applied Voltage on the Synthesis of Gold Nanoparticles for Nanofluid by Solution Plasma

    Y.K. Heo, T. Ueno, N. Zettsu, N.Saito

    International Symposium on EcoTopia Science'11  2011.12.10 

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  1455. Effects of the Temperature on the Synthesis of Gold Nanoparticles for Nanofluid by Solution Plasma

    Y. Heo, T. Ueno, N. Zettsu, N. Saito

    4th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials (ISPlasma2012)  2012.3.6 

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  1456. Electrical and Chemical Properties of Granulated Metal/a-C Films Deposited by Shielding Arc Ion Plating

    H. Lee, M. A. Bratescu, N. Saito

    IUMRS-ICA 2012  2012.8.26 

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  1457. Electrical and Chemical Properties of Granulated Metal/a-C Films Deposited by Shielding Arc Ion Plating

    H. Lee, M. A. Bratescu, N. Saito

    IUMRS-ICA 2012  2012.8.26 

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  1458. Electrocatalytic Activity for Oxygen Reduction of Transition Metal/Carbon Catalysts Synthesized by Solution Plasma Process

    D. Kim, P. Pootawang, N. Saito

    The 13th International Symposium on Biomimetic Materials Processing(BMMP-13)  2013.1.22 

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  1459. Electronic States Analysis of Metal Nanocluster for Oxygen Reduction Catalyst in Fuel Cells

    T. Morishita, T. Ueno, N. Saito

    2015.11.19 

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  1460. Encapsulation of Gold Nanoparticles onto Green Tea Extract-Modified Chitosan Flakes as Catalyst for 4-Nitrophenol Reduction

    2015.9.9 

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  1461. Enhancement of ammonia gas detection sensitivity by surface treatment of an optical fiber International conference

    伊澤昂汰, リ オイルン、マリア, アントワネッタ ブラテスク, 齋藤永宏, K. Izawa, O. L. Li, Maria.A.Bratescu, N. Saito

    第25回日本MRS年次大会  2015.12.8 

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    Venue:横浜情報文化センター  

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  1462. Enhancement of sol-gel reaction in catalyst-free mesoporous silica synthesis by solution plasma

    P. Pootawang, N. Saito

    5th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials(ISPlasma2013)  2013.1.28 

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  1463. Enhancement the sensitivity of optical fiber gas sensor by surface treatment

    2015.3.26 

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  1464. Evaluation of convective heat transfer coefficient of static condition fluids using differential scanning calorimeter

    Y.K. Heo, M.A. Bratescu, N. Saito

    ISAWST1 First International Symposium on Advanced Water Science and Technology  2012.11.11 

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  1465. Evaluation of the discharge capacity and the reaction by-products of the Li-air battery using the spherical carbon nanoparticles as the cathode material

    S. Morishita, O.L.Li, N. Saito

    The 14th International Symposium on Biomimetic Materials Processing (BMMP-14)  2014.1.24 

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  1466. Exhaled breath analysis of ammonia gas using colorimetric attenuated total reflectance spectroscopy

    MariaAntoaneta Bratescu, Kouta Isawa, Takayoshi Kiguchi, OiLun Li, Nagahiro Saito

    2015.10.18 

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  1467. Exhaled Breath Analysis of Ammonia Gas using Colorimetric Attenuated Total Reflectance Spectroscopy

    MariaAntoaneta Bratescu, Kouta Izawa, Takayoshi Kiguchi, Oi Lun Li, Nagahiro Saito

    2015.10.18 

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  1468. Fabrication of 111)-oriented SrTiO3/BaTiO3 SuperLattices by Ion Beam Deposition

    G. Panomsuwan, T. Ueno, N. Zettsu, N. Saito, O.Takai

    International Symposium on EcoTopia Science'11  2011.12.10 

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  1469. Fabrication of Boron-doped Diamond Nanograss Array by Oxygen Plasma Treatment

    N.SAITO

    The 12th Internaional Symposium on Eco-Materials Processing and Design  2011 

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  1470. Fabrication of Noble Metal Nanoparticles by Solution Plasma Processing

    X. Hu, O. Takai, N. Saito

    Nagoya Univ.-Tsinghua Univ.-Toyota Motor Corp.-Hokkaido Univ.-Univ. Electron. Sci. Tech. China Joint Symposium  2011.11.22 

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  1471. Fabrication of self-assembled metal nanodot gate MOS capacitor and evaluation of their charge injection properties

    R. Sumi, N. Zettsu, T. Hosoi, H. Watanabe, O. Takai, N. Saito

    International Symposium on EcoTopia Science'11  2011.12.10 

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  1472. Fabrication of Shape-controlled Metal Nanodot Array by Electrostatically-driven Self-assembly as well as their Charge Injection Properties

    R. Sumi, N. Zettsu, T. Hosoi, H. Watanabe, N. Saito

    4th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials (ISPlasma2012)  2012.3.5 

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  1473. Fabrication of Shape-controlled Metal Nanodot Array by Electrostatically-driven Self-Assembly as well as their Charge Injection Properties

    R. Sumi, T. Hosoi, H. Watanabe, X. Hu, O. Takai, N. Saito, N. Zettsu

    15th International Conference on Thin Films  2011.11.8 

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  1474. Fabrication of Shape-controlled Metal Nanodot Array by Electrostatistically?driven Self-assembly as well as their Charge Injection Properties

    R. Sumi, T. Hosoi, H. Watanave, X. Hu, O. Takai, N. Saito, N. Zettsu

    AVS 58th International Sympposium & Exhibition  2011.11.8 

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  1475. Fabrication of silica nanotubes using multi-walled carbon nanotubes as template

    W. Yaowarat, Oi Lun Li, Nagahiro Saito

    Materials Research Society (MRS)  2013.12.1 

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  1476. Fabrication of Single-nano-sized Pt Cluster Supported on Graphene Nanosheets by Solution Plasma

    K. Sadasue, N. Zettsu, T. Ueno, N. Saito

    International Symposium on EcoTopia Science'11  2011.12.10 

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  1477. Fabrication of Superhydrophobic Surface at a Local Area using Atmospheric Pressure Plasma Jet

    C. Terashima, Y. Takahashi, T. Shirafuji, N. Saito, O. Takai

    4th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials (ISPlasma2012)  2012.3.5 

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  1478. Fabrication of the Superhydrophobic Film by Atmospheric Pressure Plasma

    D. Fujimoto, H. Takahashi, T. Ueno, N. Zettsu, O. Takai, N. Saito

    Twelfth International Symposium on Biomimetic Materials Processing (BMMP-12)  2012.1.24 

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  1479. FCC Metal Nanoparticles Fabricated by Solution Plasma Processing

    S.-P. Cho, M. A. Bratescu, N. Saito, O. Takai

    Twelfth International Symposium on Biomimetic Materials Processing (BMMP-12)  2012.1.24 

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  1480. First principle calculation of oxygen reduction reaction on metal nanoclusters

    T. Morishita, T. Ueno, N. Saito

    2013 MRS Spring Meeting & Exibits  2013.4.1 

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  1481. Formation of Calcium Carbonate Films by Electrochemical Method : Controlled with Concentration of Mg2+ and Temperature

    S. H. Lee, M. H. Lee, N. Saito

    1st International Conference on Surface Engineering (ICSE2013)  2013.11.18 

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  1482. Formation of Silver Nanoparticles in Nanochannels of Mesoporous Silica via Solution Plasma Processing

    W. Yaowarat, P. Pootawang, N. Saito

    1st International Workshop on Solution Plasma and Moleculer Technologies(SPM-1)  2013.3.6 

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  1483. Gaseous and Solid By-Products Generated from Thermal Plasma Cell-Phone Waste Treatment

    O.L.Li, B. Ruj, J.S. Chang, N. Saito, O. Takai, T. Inaba, G. Pietsch

    Proc of International Symposium on Plasma Chemistry  2011.7.24 

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  1484. Gd2SiO5 結晶の塩化物フラックス育成 International conference

    神谷雄人, 青木淑恵, 是津信行, 齋藤永宏

    第9 回日本フラックス成長研究発表会  2014.12.11 

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    Venue:高知大学  

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  1485. Graphene Decorated with Bimetallic nanocrystals for Enhanced Plasmonic Energy Conversion

    M.A. Bratescu, T. Ueno, O. Takai, N. Saito

    11th APCPST & 25th SPSM  2012.10.2 

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  1486. Graphene Decorated with Gold Bimetallic Nanocrystals in Solution Plasma

    M.A. Bratescu, O. Takai, N. Saito

    5th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials(ISPlasma2013)  2013.1.28 

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  1487. Graphene Decorated with Metal Nanoparticles using Solution Plasma Processing

    M.A. Bratescu, T. Ueno, O. Takai, N. Saito

    2012 MRS Fall Meeting  2012.12 

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  1488. Discharge in Gelatin/Ascorbic Acid solution for Copper Nanofl uid Preparation

    P. Pootawang, S. Y. Lee, N. Saito

    IUMRS-ICA 2012  2012.8.26 

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  1489. Chemical Structures and Mechanical Characteristics of a-C and a-CN Films by Shielding Arc Ion Plating as Functions of Bias Voltages

    H. Lee, T. Ueno, N. Zettsu, N. Saito, O.Takai

    International Symposium on EcoTopia Science'11  2011.12.10 

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  1490. Chemical-Free Synthesis of ZnO Nanoparticles by Solution Plasma Processing

    S. Nemoto, S. Morishita, S. Y. Lee, A. Watthanaphanit, N. Saito

    2015.5.6 

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  1491. CNx Nanosheets as Metal-Free Catalysts for the Oxygen Reduction Reaction by Solution Plasma Process

    SEUNGHYO LEE, TOMONAGA UENO AND, NAGAHIRO SAITO

    2015.3.26 

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  1492. Consideration of Solution Plasma Process Conditions for Cellulose Degradation

    S. Nemoto, A. Watthanaphanit, N. Saito

    5th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials(ISPlasma2013)  2013.1.28 

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  1493. Control of Carbon Conductivity with Induction of Naphthalene and Anthracene by Using Solution Plasma Process

    2015.9.13 

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  1494. Controllable Synthesis of Conductive Nitrogen Doped Carbon with Graphitic Walls by Solution Plasma Process

    K. Y. Hyun, T. Ueno, N. Saito

    2014.11.30 

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  1495. Controlling Oxidation level of Graphene/Graphene Oxide by Solution Plasma from the Exfoliation of Graphite Oxide International conference

    G. A. Akceoglu, Oi Lun LI, Nagahiro Saito

    2013.9.16 

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  1496. Conversion Ability of Sugars to HMF by Solution Plasma Process

    Y. MUTA, A. WATTHANAPHANIT, N. SAITO

    2015.1.23 

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  1497. Conversion Ability of sugars to HMF by Solution Plasma Process

    Y. MUTA, A. WATTHANAPHANIT, N. SAITO

    2015.3.26 

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  1498. Conversion of Biomass to Ethanol by Solution Plasma International conference

    李靄倫, 齋藤永宏, 高井治

    2012年春季 第59回応用物理学関係連合講演会  2012.3.17 

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  1499. Conversion of Biomass to Ethanol by Solution Plasma

    Helena Oi Lun Li, Kuniko Urashima, Nagahiro Saito

    The eighth International Symposium on Non-Thermal Plasma Technology (ISNTP-8)  2012.6.25 

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  1500. Conversion of cellulose to sugar alcohol by solution plasma processing

    Anyarat Watthanaphanit, Hoonseung Lee, Nagahiro Saito

    2014.4.22 

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  1501. Conversion of Celluose to Energy by Solution Plasma:Solid, Liquid and Gaseous By-Product Analyses

    Helena Oi Lun Li, Kuniko Urashima, Nagahiro Saito

    The 3rd Research Symposium on Petrochemical and Materials Technology and The 18th PPC Symposium on Petroleum, Petrochemicals, and Polymer  2012.4.24 

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  1502. Conversion of Celluose to Energy by Solution Plasma:Solid, Liquid and Gaseous By-Product Analyses

    Helena Oi Lun Li, Kuniko Urashima, Nagahiro Saito

    The 3rd Research Symposium on Petrochemical and Materials Technology and The 18th PPC Symposium on Petroleum, Petrochemicals, and Polymer  2012.4.24 

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  1503. Conversion of Guar Gum Biopolymer to Ethanol by Solution Plasma Process International conference

    Shimpei Nemoto, Anyarat Watthanaphanit, Nagahiro Saito

    2013.12.9 

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  1504. Conversion of palm oil to carbon materials by plasma discharge in solution

    Md. Z. Islam, A. Watthanaphanit, N. Saito

    2015.9.20 

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  1505. Conversion of palm oil to carbon materials by plasma discharge in solution

    Md. Z. Islam, A. Watthanaphanit, N. Saito

    2015.9.20 

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  1506. Conversion of sorbitol by plasma discharge in solution

    S Yoshida, A Watthanaphanit, N Saito

    2015.5.6 

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  1507. Conversion of Sugars to HMF by a Physical Technique: Solution Plasma Process

    Y. Muta, A. Watthanaphanit, N. Saito

    2015.12.12 

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  1508. Conversion of the World’s Most Abundant Biomass Cellulose to Energy International conference

    オイルンヘレナリ, 齋藤永宏, 高井治

    第21回日本MRS学術シンポジウム  2011.12.19 

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  1509. Cu-Fe Bi-Functional Catalyst Synthesized by Solution Plasma for the Application in Li-air Battery

    Ryo takahashi, Oi Lun Li, Nagahiro Saito

    1st International Conference on Surface Engineering (ICSE2013)  2013.11.18 

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  1510. CVD法によって作製した非晶質炭素材の電気化学特性に及ぼす窒素含有量の影響 International conference

    齋藤永宏

    第58回応用物理学関係連合講演会  2011 

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  1511. CVD法によって作製した非晶質炭素材の電気化学特性に及ぼす窒素含有量の影響 International conference

    齋藤永宏

    第58回応用物理学関係連合講演会  2011 

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  1512. Decane Reformation by a DC Electrohydrodyanmic Atomization

    D. Brocilo, J.-S. Chang, D. Ewing, H. Hirata, S. Matsumoto, P. Fanson, O.L.Li, N.Saito, K.Urashima, O.Takai

    International Conference of Dielectric Liquid  2011.6.26 

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  1513. Degradation of Organic Pollutants in Solution Plasma: A Spectroscopic Analysis of the Decomposition Mechanism

    N.SAITO

    The 12th Internaional Symposium on Eco-Materials Processing and Design  2011 

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  1514. Depolymerization of Natural Biopolymer by Solution Plasma Process

    A. Watthanaphanit

    ICNP-2012  2012.10.26 

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  1515. Depolymerization of Sodium Alginate by a Plasma Process in Aqueous Solution

    A. Watthanaphanit, N. Saito

    IUMRS-ICEM2012  2012.9.23 

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  1516. Depolymerization of Sodium Alginate by a Plasma Process in Aqueous Solution

    A. Watthanaphanit, N. Saito

    IUMRS-ICEM2012  2012.9.23 

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  1517. Depolymerization of Sodium Alginate by Solution Plasma Process

    Anyarat Watthanaphanit

    International Symposium on Materials Science and Surface Technology 2013 (MSST 2013)  2013.11.29 

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  1518. Depolymerization of Starch by Solution Plasma Process

    Yukihiro Muta, Anyarat Watthanaphanit, Nagahiro Saito

    the 2nd Seminar on Future Vision of Green Mobility and Advance Technologies for Realizing the Vision  2013.12.2 

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  1519. Depolymerization of Starch by Solution Plasma Process

    Yukihiro Muta, Anyarat Watthanaphanit, Nagahiro Saito

    The 14th International Symposium on Biomimetic Materials Processing (BMMP-14)  2014.1.24 

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  1520. Deterioration Phenomenon in the Cyclic Polarization of Electrochromic InN

    K. Ohkubo, T. Kimura, G. Tanaka, Y. Inoue, O. Takai

    Twelfth International Symposium on Biomimetic Materials Processing (BMMP-12)  2012.1.26 

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  1521. Develop of high sensitivity H2S gas sensor using ATR method International conference

    表面技術協, 回講演大会

    表面技術協会第132回講演大会  2015.9.9 

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    Venue:信州大学  

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  1522. Development of EC Cell using Biomimetic-designed InN Film

    T. Kimura, K. Ohkubo, G. Tanaka, Y. Inoue, O. Takai

    Twelfth International Symposium on Biomimetic Materials Processing (BMMP-12)  2012.1.26 

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  1523. Development of portable alcohol sensor based on evanescent wave absorption

    H.Mizutani, O. L. Li, N. Saito

    2015.5.6 

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  1524. Development of solution plasma reactor for direct biological application

    K. Koyama, O. L. Li, N. Saito

    2015.5.6 

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  1525. Development of the analytic method for solution plasma by electrical probe

    D. Aburaya, T. Kiguchi, N. Saito

    1st International Conference on Surface Engineering (ICSE2013)  2013.11.18 

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  1526. Development of the Graphite Structure of Solution Plasma Synthesized Carbon by Halocarbon Solution

    Hiroki Hayashi, Oi Lun Li, Nagahiro Saito

    1st International Conference on Surface Engineering (ICSE2013)  2013.11.18 

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  1527. Development of the Graphite Structure of Solution Plasma Synthesized Carbon by Halogenated benzene derivatives

    H.Hayashi, O.L.Li, N. Saito

    6th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials / 7th International Conference on Plasma-Nano Technology & Science (ISPlasma 2014 / IC-PLANTS 2014)  2014.3.2 

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  1528. Development of the Graphitic Structure of Solution Plasma Synthesized Carbon by Halocarbon Solution

    H. Hayashi, O. L. Li, N. Saito

    the 2nd Seminar on Future Vision of Green Mobility and Advance Technologies for Realizing the Vision  2013.12.2 

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  1529. Diagnosis of Solution Plasma by the Electrical Probe Method

    Y. Ichikawa, Y. K. Heo, M. A. Bratescu, N. Saito

    The 13th International Symposium on Biomimetic Materials Processing(BMMP-13)  2013.1.22 

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  1530. Diagnosis of Solution Plasma by the Electrical Probe Method

    Y. Ichikawa, M. A. Bratescu, N. Saito

    5th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials(ISPlasma2013)  2013.1.28 

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  1531. Diagnosis of Solution Plasma by the Probe Method

    Y. Ichikawa, M. Bratescu, Y. K. Heo, N. Saito

    1st International Workshop on Solution Plasma and Moleculer Technologies(SPM-1)  2013.3.6 

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  1532. Diagnosis of Solution Plasma for Synthesis of Gold Nanoparticles

    D. Fujimoto, J. Hieda, M. A. Bratescu, O. Takai, N. Saito

    15th International Conference on Thin Films  2011.11.8 

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  1533. Direct and Controllable Synthesis of Nitrogen-Doped Carbon for Oxygen Reduction Reaction by Solution Plasma Process

    K. Y. Hyun, T. Ueno, N. Saito

    2015.3.26 

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  1534. Discharge Characteristics of Packed Bed HF Bipolar Liquid Solution Plasmas

    O.L.Li, J.S. Chang, J. Hieda, N. Saito, O. Takai

    15th International Conference on Thin Films  2011.11.9 

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  1535. Discharge Characteristics of Packed Bed HF Bipolar Liquid Solution Plasmas and Their Applications

    Jen-Shih Chang, O.L. Helena Li, K. Urashima, J. Hieda, O. Takai, N. Saito

    20th International Symposium on Plasma Chemistry  2011.7.28 

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  1536. Discharge in Gelatin/Ascorbic Acid solution for Copper Nanofl uid Preparation

    P. Pootawang, S. Y. Lee, N. Saito

    IUMRS-ICA 2012  2012.8.26 

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  1537. Chemical Modification of the Carbon Nanotubes by the Solution Plasma Processing

    T. Ueno, H. Harada, N. Saito

    Materials Research Society (MRS)  2013.12.1 

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  1538. Adhesion Control of Bacteria with Micropatterned Superhydrophobic/Superhydrophilic and Superhydrophobic/Poly(Ethylene Glycol) Surfaces

    N. Andreeva, T. Ishizaki, N. Saito

    20th INTERNATIONAL MATERIALS RESEARCH CONGRESS (2011)  2011.9.6 

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  1539. Advanced Functional Materials Synthesized by Solution Plasma Process International conference

    The 2nd International Symposium on Highly-Controlled Nano- and Micro-Scale Functional Suraface Structures for Frontier Smart Materials 2014  2014.5.17 

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  1540. Ag Nanoclusters in Silica Mesopore Synthesized by Solution Plasma Process

    Y. Tanida, T. Ueno, N. Zettsu, N. Saito

    Twelfth International Symposium on Biomimetic Materials Processing (BMMP-12)  2012.1.26 

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  1541. Alginate Oligosaccharides Prepared by Solution Plasma Process: Concentration Dependence Study

    A. Watthanaphanit, N. Saito

    The 3rd Research Symposium on Petrochemical and Materials Technology and The 18th PPC Symposium on Petroleum, Petrochemicals, and Polymer  2012.4.24 

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  1542. Alginate Oligosaccharides Prepared by Solution Plasma Process: Concentration Dependence Study

    A. Watthanaphanit, N. Saito

    The 3rd Research Symposium on Petrochemical and Materials Technology and The 18th PPC Symposium on Petroleum, Petrochemicals, and Polymer  2012.4.24 

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  1543. Amorphous Nb-doped SrTiO3 based Transparent Conductive Oxide Films on Glass by Ion Beam Sputtering

    N. Zettsu, G. Panomsuwan, N. Saito, O. Takai

    4th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials (ISPlasma2012)  2012.3.5 

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  1544. An Alternative Oxygen Reaction Electrocatalyst for Polyelectrolyte Membrane Fuel

    P. Pootawang

    ICEAN 2012  2012.12.22 

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  1545. An innovative measurement method for heat transfer performance of nanofluids by differential scanning calorimetry International conference

    D. Aburaya, Y. K. Heo, T. Kiguchi, N. Saito

    2013.12.9 

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  1546. An Innovative Measurement Method of Heat Transfer Performance in Nanofluids by Differential Scanning Calorymetry

    D. Aburaya, T. Kiguchi, N. Saito

    The 9th Asian-European International Conference on Plasma Surface Engineering  2013.8.25 

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  1547. An innovative measurement method of heat transfer performance in nanofluids by differential scanning calorymetry

    D. Aburaya, Y. K. Heo, T. Kiguchi, N. Saito

    Future Vision of Green Mobility and Advance Technologies for Realizing the Vision  2013.11.25 

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  1548. Analaysis of Carbon Nitride Films Synthesized by Dual Microwave Plasma

    T. Kiguchi, O. Ikai, N. Saito

    The 9th Asian-European International Conference on Plasma Surface Engineering  2013.8.25 

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  1549. Analysis of benzoquinone decomposition in solution plasma process

    M. A. Bratescu, N. saito

    2015.9.27 

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  1550. Analysis of Carbon Nitride Films Synthesized by Dual Microwave Plasma Source CVD

    O. Ikai, Y. K. Heo, M. A. Bratescu, N. Saito

    5th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials(ISPlasma2013)  2013.1.28 

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  1551. Analysis of Carbon Nitride Films Synthesized by Dual Microwave Plasma Source CVD

    O. Ikai, M. Bratescu, N. Saito

    The 13th International Symposium on Biomimetic Materials Processing(BMMP-13)  2013.1.22 

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  1552. Analysis of organic compounds decomposition in solution plasma by Coherent anti-Stokes Raman Spectroscopy

    Maria Antoaneta Bratescu, Nagahiro Saito

    2015.9.27 

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  1553. Analysis of Organic Pollutant Degradation in Pulsed Plasma by Coherent Anti-stokes Raman Spectroscopy International conference

    M. Bratescu, 上野智永, 是津信行, 高井治, 齋藤永宏

    2012年春季 第59回応用物理学関係連合講演会  2012.3.18 

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  1554. Analysis of the Activated Species for the Reaction of Solution Plasma in Water-Alcohol Mixture by Electron Spin Resonance

    T. Sudare, T. Ueno, N. Saito

    International Symposium on EcoTopia Science 2013 - Innovation for Smart Sustainable Society  2013.12.13 

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  1555. Analysis of the Reduction Species and Metal Reduction Reaction in Solution Plasma

    R. Kato, T. Kiguchi, N. Saito

    1st International Conference on Surface Engineering (ICSE2013)  2013.11.18 

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  1556. Analysis of the Solution Plasma Reaction by Electrochemical Measurement International conference

    Ryo Kato, Takayoshi Kiguchi, Nagahiro Saito

    2013.12.9 

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  1557. Anticorrosive Performance of Fluorinated Double Layered Hydroxide Film Formed on Magnesium Alloy

    T. Ishizaki, N. Saito, M. Sakamoto

    EUROCORR2011  2011.10.31 

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  1558. Application of Integrated Micro Solution Plasma to Decomposition of Organic Substances in Water

    T. Shirafuji, J. Hieda, N. Saito, O. Takai

    20th International Symposium on Plasma Chemistry  2011.7.27 

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  1559. Application of Solution Plasma in Food Processing International conference

    O.L. Li, N. Saito, O. Takai

    第58回材料と環境討論会  2011.9.29 

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  1560. Application of the Electrical Probe Method for Solution Plasma Analysis

    DAIKI ABURAYA, YONGKANG HEO, TAKAYOSHI KIGUCHI, NAGAHIRO SAITO

    6th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials / 7th International Conference on Plasma-Nano Technology & Science (ISPlasma 2014 / IC-PLANTS 2014)  2014.3.2 

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  1561. Behaveiors of Cells and Bacteria on Superhydrophobic and Superhydrophilic Surfaces

    O. Takai, N. Saito

    2012 MRS Spring Meeting & Exhibit  2012.4.9 

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  1562. Behaveiors of Cells and Bacteria on Superhydrophobic and Superhydrophilic Surfaces

    O. Takai, N. Saito

    2012 MRS Spring Meeting & Exhibit  2012.4.9 

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  1563. Behavior of Specific Water on Polyelectrolyte Brush

    Y. Aoki, T. Ueno, N. Zettsu, T. Fujima, N. Saito

    International Symposium on EcoTopia Science'11  2011.12.10 

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  1564. Behaviors of Cells and Bacteria on Superhydrophobic and Superhydrophilic Surfaces

    M.A. Bratescu, O. Takai, N. Saito

    2012 MRS Spring Meeting & Exhibit  2012.4.9 

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  1565. Binary Monolayer of Au and Pt Nanoparticles Fabricated by Electrostatistically-driven Colloidal Self-assembly Approach

    R. Sumi, N. Zettsu, T. Ueno, T. Hosoi, H. Watanabe, N. Saito

    Twelfth International Symposium on Biomimetic Materials Processing (BMMP-12)  2012.1.26 

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  1566. Biomimetic Materials Processing ~ a cold plasma in cold solution ~

    N. Saito

    12th International Conference in Asia (IUMRS-ICA 2011)  2011.9.20 

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  1567. Biomimic Anti-Stain Surface Treatment for Housing Wet Area

    N. Isu, Y. Kato, N. Saito, O. Takai

    15th International Conference on Thin Films  2011.11.10 

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  1568. Biomimic Anti-stain Surface Treatment of Housing Materials

    N. Isu, Y. Kato, C. Numako, N. Saito, O. Takai

    Twelfth International Symposium on Biomimetic Materials Processing (BMMP-12)  2012.1.24 

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  1569. Carbon production from palm oil by plasma discharge in solution

    Md. Zahidul Islam, Anyarat Watthanaphanit, Nagahiro Saito

    2015.9.8 

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  1570. Carbon production from palm oil by plasma discharge in solution

    2015.9.8 

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  1571. Catalytic Activity and Durability for Oxygen Reduction Reaction of Hetero-atom doped Carbon International conference

    2014.3.29 

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  1572. Catalytic activity for oxgen reduction reaction 3rd transition metal/carbon catalysts

    D. Kim, P. Pootawang, N. Saito

    The 6th International Conference on PLAsma Nanotechnology & Science(IC-PLANTS2013)  2013.2.2 

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  1573. Catalytic activity for oxgen reduction reaction of tungsten carbide/carbon catalysts

    Dae-Wook Kim, P. Pootawang, N. Saito

    5th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials(ISPlasma2013)  2013.1.28 

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  1574. Catalytic Activity for Oxygen Reduction of Iron Compound with Carbon Nanoparticles Synthesized by Solution Plasma Process

    D. Kim, P. Pootawang, N. Saito

    1st International Workshop on Solution Plasma and Moleculer Technologies(SPM-1)  2013.3.6 

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  1575. Catalytic Activity for Oxygen Reduction Reaction of Nitrogen and Boron Doped Mesoporous Carbon

    Dae-Wook Kim, Oi Lun Li, Nagahiro Saito

    1st International Conference on Surface Engineering (ICSE2013)  2013.11.18 

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  1576. Catalytic Activity of Nickel-containing Amorphous Carbon (Ni:aC) Thin Films by Shielding Arc Ion Plating using Bias Conditions

    H. Lee, N. Saito, O. Takai

    15th International Conference on Thin Films  2011.11.9 

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  1577. Catalytic Properties of Nanocluster

    Tomonaga Ueno, Tetsunori Morishita, Tomohito Sudare, Nobuyuki Zettsu, Nagahiro Saito

    IUMRS International Conference of Young Researchers on Advanced Materials 2012 (IUMRS-ICYRAM 2012)  2012.7.1 

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  1578. CCP-CVDにおける有機シリコン原料分子中の酸素原子の挙動2 International conference

    根岸正樹, 星野隆史, 井上泰志, 高井治

    表面技術協会第124回講演大会  2011.9.22 

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  1579. Cellulose conversion to sugar alcohol by solution plasma processing

    Anyarat Watthanaphanit, Hoonseung Lee, Nagahiro Saito

    2014.11.30 

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  1580. Cellulose conversion to sugar alcohol by solution plasma processing

    Anyarat Watthanaphanit, Hoonseung Lee, Nagahiro Saito

    2014.11.30 

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  1581. Cellulose conversion to sugar alcohol by solution plasma processing

    Anyarat Watthanaphanit, Hoonseung Lee, Nagahiro Saito

    2014.11.30 

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  1582. Cellulose/Graphene Beads as Anode Material for Lithium Batteries International conference

    2014.3.29 

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  1583. Characteristics of Nitrogen-doped Carbon Films Grown by RF Plasma Enanced CVD

    N.SAITO

    The 12th Internaional Symposium on Eco-Materials Processing and Design  2011 

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  1584. Characterization of Micro Crystalline Cellulose on the surface of Graphene/Graphene Oxide Sheets by Thermal Exfoliation Method

    G. A. Akceoglu, Oi Lun LI, Nagahiro Saito

    1st International Conference on Surface Engineering (ICSE2013)  2013.11.18 

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  1585. Charge Doping of Large-Area Graphene by Gold-Alloy Nanoparticles

    M. A. Bratescu, N. Saito

    The 14th International Symposium on Biomimetic Materials Processing (BMMP-14)  2014.1.24 

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  1586. A Reaction Mechanism of Organosilicon Plasma for SiO:CH Thin Films

    Y. Yun, M. Lee, Y. Inoue, N. Saito, O. Takai

    15th International Conference on Thin Films  2011.11.9 

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  1587. A Computational Investigation of Metal Nanocluster Structure and Electronic Property

    T. Morishita, T. Ueno, N. Saito

    2015.3.26 

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  1588. A Computational Investigation of Metal Nanocluster Structure and Electronic Property

    T. Morishita, T. Ueno, N. Saito

    2015.3.26 

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  1589. A Correlation Study of the Factors which Affect Nanoparticles Synthesis in Solution Plasma

    Y. K. Heo, M. A.Bratescu, N. Saito

    1st International Workshop on Solution Plasma and Moleculer Technologies(SPM-1)  2013.3.6 

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  1590. A DFT study on Mechanism of Oxygen Reduction Reaction on Metal Nanoclster

    Tetsunori Morishita, Tomonaga Ueno, Nagahiro Saito

    1st International Conference on Surface Engineering (ICSE2013)  2013.11.18 

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  1591. A Investigation of Metal Nanocluster Structure and Electric Property

    T. Ueno, T. Morishita, M. Mizushita, N. Saito, K. Takenaka, Y. Setsuhara, G. Uchida

    2015.6.9 

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  1592. A model for Electron Impact Dissociation Ionization of Organosilicon Molecules

    Y. Yun, M. Lee, Y.Inoue, N. Saito, O. Takai

    15th International Conference on Thin Films  2011.11.9 

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  1593. A Novel Solution Plasma Sputtering Technique for Well-defined Metal Nanoparticles

    X. Hu, O. Takai, N. Saito

    2nd ISNPEDADM-2011  2011.11.15 

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  1594. A Novel Synthesis Technology of Size-Controllable Nano Metal International conference

    O.L.Li, N. Saito

    2013.9.10 

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Works 22

  1. 超薄膜生成技術による生体組織細胞培養テンプレート

    2004

  2. 超薄膜生成技術による生体組織細胞培養テンプレート

    2004

  3. ダイヤモンド表面の有機修飾による機能化と集積化

    2004

  4. 水滴中で細胞を立体培養 超撥水成膜技術で可能に 名古屋大学

    2004

  5. 戦略的創造研究推進事業採択

    2004

  6. 液中プラズマによる滅菌システムに関する研究

    2004

  7. 表面ナノテクノロジーを利用したバイオインターフェース

    2004

  8. 表面ナノテクノロジーを利用したバイオインターフェース

    2004

  9. 液中プラズマによる滅菌システムに関する研究

    2004

  10. 戦略的創造研究推進事業採択

    2004

  11. 水滴中で細胞を立体培養 超撥水成膜技術で可能に 名古屋大学

    2004

  12. ダイヤモンド表面の有機修飾による機能化と集積化

    2004

  13. 超薄膜生成技術による生体組織細胞培養テンプレート

    2004

     More details

  14. ナノプローブを利用した表面電位メモリ

    2003

  15. ナノプローブを利用した表面電位メモリ

    2003

  16. 糖鎖高分子の自己組織化と生体機能発現

    2003

  17. 糖鎖高分子の自己組織化と生体機能発現

    2003

  18. バイオミメティックプロセシングを用いた材料創製

    2002

  19. バイオミメティックプロセシングを用いた材料創製

    2002

  20. 積み木細工のナノテクノロジー

    2002

  21. 積み木細工のナノテクノロジー

    2002

  22. バイオミメティックナノテクノロジー

    1999

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Research Project for Joint Research, Competitive Funding, etc. 20

  1. 多様化・個別化社会イノベーションデザイン拠点~高齢者が元気になるモビリティ社会~ -ヒューマンセンシング-

    2013.11

    センター・オブ・イノベーションプログラム 

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    Grant type:Competitive

  2. 次世代電池・燃料電池開発

    2013.11 - 2018.3

    スーパークラスタープログラム 

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    Grant type:Competitive

  3. ソリューションプラズマ精密合成場の深化と カーボン系触媒の進化

    2012.10 - 2018.3

    特色ある大学教育支援プログラム 

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    Grant type:Competitive

  4. 次世代クールナノ流体を用いた革新的高速エネルギー輸送

    2011.10 - 2012.9

    先端的低炭素化技術開発 

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    Grant type:Competitive

  5. Development of Advanced Nanomaterials by Surface functionalization

    2008.9 - 2014.3

      More details

    Grant type:Competitive

  6. 界面制御ナノコンポジット部材の開発

    2008.9

    国内共同研究 

  7. 超はっ水ナノ分子ペーパー製造技術の開発

    2007

  8. ソリューションプラズマ反応場の自律制御化とナノ合成・加工への応用

    2006.10 - 2012.3

    特色ある大学教育支援プログラム 

      More details

    Grant type:Competitive

  9. 印刷物へのはっ水処理技術の応用研究

    2006

    企業からの受託研究 

  10. 超はっ水製造装置の設計と開発

    2006

    企業からの受託研究 

  11. 金属表面の自己組織化単分子膜処理および材料界面制御

    2006

    国内共同研究 

  12. セラミックス基材上への自己組織化単分子膜設計に関する基礎研究

    2006

    国内共同研究 

  13. 液中プラズマ滅菌システムに関する基礎研究

    2006

    国内共同研究 

  14. 超撥水加工技術による微生物の固体表面への吸着抑制

    2006

    国内共同研究 

  15. ナノめっき技術の開発

    2006

    国内共同研究 

  16. プラズマおよび真空紫外光露光によるバイオマテリアル表面の作製

    2006

    国内共同研究 

  17. 印刷物上の自己組織化単分子膜による疎水化処理

    2006

    国内共同研究 

  18. バイオインターフェースの構築と計測手法の確立

    2006

    国内共同研究 

  19. 医療用水・排水処理のためのプラズマ・電解複合処理システムの開発

    2004

  20. SAMナノパターニングシステム開発

    2003.10 - 2008.3

    知的クラスター創成事業 

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    Grant type:Competitive

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KAKENHI (Grants-in-Aid for Scientific Research) 19

  1. ミクロシスチン-LRの毒予防を目的とした新規ナノ材料合成

    Grant number:21F20795  2021.4 - 2023.3

    科学研究費助成事業  特別研究員奨励費

    齋藤 永宏, MA JUNGUO

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    Authorship:Other 

  2. Graphene Solar Cell

    Grant number:18K18998  2018.6 - 2020.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Challenging Research (Exploratory)

    Saito Nagahiro

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    Authorship:Principal investigator 

    Grant amount:\6240000 ( Direct Cost: \4800000 、 Indirect Cost:\1440000 )

    In this research, we develop graphene solar cells. Until now, we have not succeeded in developing uniform n-type graphene semiconductors and p-type graphene semiconductors. We tried to fabricate all-graphene solar cells by joining uniform n-type graphene semiconductors and p-type graphene semiconductors and using transparent conductive graphene as electrodes.
    As a result, we succeeded in synthesizing highly crystalline p-type graphene and n-type graphene. Therefore, in order to see the efficiency of p-type and n-type semiconductor characteristics, we conducted a preliminary experiment using the perovskite that is recently used in the active layer.As a result, both n-type graphene and p-type graphene have active layers. It has been found that it may improve the efficiency of solar cell.

  3. Synthesis and Evaluation of beta-C3N4 by Solution Plasma

    Grant number:16K14449  2016.4 - 2018.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Challenging Exploratory Research

    SAITO Nagahiro

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    Authorship:Principal investigator 

    Grant amount:\3770000 ( Direct Cost: \2900000 、 Indirect Cost:\870000 )

    β-C3N4 is expected to have a potential to demonstrate the hardness superior to diamond. However, no researchers have reported the synthesis of β-C3N4. In this study, we aimed to synthesize β-C3N4 by solution plasma (SP). SEM observations and XRD analysis showed the hexagonal hollow structure and crystal structure, respectively. The sheet resistance is around 3200 (Ω/Sq.) which is closer to the one of the insulator. This indicates it is composed of sp3 chemical bonding state, which originates from the raw material. The thermal decomposition easily occurred as same as polymer by DSC. The type of adsorption was type III defined by IUPAC. The micropore is crucial for the adsorption of gas on this material. It showed hundredth part of the specific surface area compared to activated carbon. In the type of adsorption, the interaction between gas and solid is strong. Finally, we cannot get β-C3N4, but can get the unexpected materials with hexagonal hollow structure.

  4. Development of multi-functional nanocluster catalyst

    Grant number:24656438  2012.4 - 2014.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Challenging Exploratory Research

    SAITO Nagahiro

      More details

    Authorship:Principal investigator 

    Grant amount:\4160000 ( Direct Cost: \3200000 、 Indirect Cost:\960000 )

    Au, Pt and alloy catalysts supported on Carbon was synthesized by solution plasma process in organic solvent with Pt and Au electrode. The synthesized material was used for Lithium-air battery and the discharge property was increased.

  5. Analysis of bound water behaviors around polymer electrolyte brush and development of ion conductive materials

    Grant number:23246126  2011.4 - 2015.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)

    SAITO Nagahiro, UENO Tomonaga

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    Authorship:Principal investigator 

    Grant amount:\50180000 ( Direct Cost: \38600000 、 Indirect Cost:\11580000 )

    In this research, the behaviors of water around polymer electrolyte or polymer electrolyte brush were investigated. Furthermore, the behavior of water in mesoporous silica was studied and compared to that around polymer electrolyte brush. To fabricate ion conductive materials, the methods for controlling molecular weight and surface modification were developed.

  6. Generation of Plasmas in Microscopically Non-uniform Multiphase Media and Its Application

    Grant number:21110003  2009.7 - 2014.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

    SHIRAFUJI Tatsuru, TACHIBANA Kunihide, SAKAI Osamu, TAKAI Osamu, SAITO Nagahiro, ISHIZAKI Takahiro, HIEDA Junko, TAKAHASHI Kenji, TOCHIKUBO Fumiyoshi, GOTO Motonobu, MURAKAMI Tomoyuki, TANAKA Kenji

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    Authorship:Other 

    Three-dimensionally integrated micro-solution plasma, in which the plasma-liquid nano interfaces are integrated, has been proposed. A proto-type reactor has been manufactured, which has excellent water treatment efficiency. The origins of the high efficiency have been clarified through time-resolved optical emission spectroscopy and plasma chemical reaction simulations. It has been predicted that a nano-scale space-charge layer is formed beneath the liquid surface in contact with plasma, and that semi-preferential reactions can occur between gas-phase species and liquid-phase ions. Er:YAG laser irradiation on water has been investigated as an alternative method for generating plasma-liquid nano interfaces, and proved to be accompanied by sterilization effects.

  7. A Study of Plasma Chemistry Involving Liquid

    Grant number:21540511  2009 - 2011

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    SHIRAFUJI Tatsuru, TAKAI Osamu, SAITO Nagahiro, HIEDA Junko

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    Authorship:Other 

    In order to establish scientific and technological foundation for materials processes using the plasmas generated in underwater bubbles, we have performed modeling and simulation of the plasma chemical reaction processes involving water and the bubble generation processes. Moreover, on the basis of these achievements, we have proposed a novel underwater plasma process using integrated micro bubbles, and proved its materials processing capability through methylene-blue-decolorization experiments.

  8. Fabrication of passive surface to protein by physicochemical proteomics approach

    Grant number:20246109  2008 - 2011

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)

    TAKAI Osamu, SAITO Nagahiro

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    Authorship:Coinvestigator(s) 

    We evaluated absorption behaviors of peptides to the surfaces. The model peptides which have different kinds and alignments of amino acids were synthesized. The functional groups of surfaces were controlled by self-assemble monolayers(SAMs). The absorption behaviors were measured by surface plasmon resonance. From results, it was found that the peptide which has hydrophobic groups absorb to hydrophobic surface and the peptide which has charge absorbs to the surface by electrostatic attractive force.

  9. シリコン上自己組織化単分子膜のバウンダリー制御と表面電位ゆらぎ

    Grant number:19026007  2007

    科学研究費助成事業  特定領域研究

    齋藤 永宏, 石崎 貴裕

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    Authorship:Principal investigator 

    Grant amount:\2400000 ( Direct Cost: \2400000 )

    一般に、シリコン上の自己組織化単分子膜(Self-assembled Monolayer:SAM)形成プロセスは2次元的成長が優位におこるとされ、そのため、前駆体となる分子のC3対称性が必要とされている。本研究ではシリコン上のSAMの成長過程において前駆体分子の対称性がどのように影響するかを実験的に検証した。さらに、SAMの成長メカニズムを利用して2種類の前駆体分子からなる2元系SAMを作製し、このSAMの表面電位について調査した。
    前駆体分子の対称性の検討では、前駆体としてC3対称性のOTS、C2対称性のODCS、C1対称性のODMSを用いた。これらの分子のトルエン溶液にシリコン基板を湿度50%下で浸漬しSAMの作製を行った。続いて、これらのSAMの表面形状を走査型プローブ顕微鏡により観察した。OTSの場合ではSAMの初期過程でドメイン構造が形成され、それが次第に融合し均-な膜となることがわかった。一方ODCSおよびODMSでは終始、ドメイン構造は見られなかった。さらに膜面内の結晶性をX線回折によって評価したところ、OTSの場合のみアルキル鎖に由来する規則構造が見られた。このOTSのドメイン形成と面内の規則構造は、C3対称性のOTS分子同士が膜内で2次元的にネットワークを形成するために現われる。C2、C1対称性の分子の場合では、分子間でそれぞれ1次元(線)あるいは0次元(点)的に重合するため、面内に広がったドメイン構造を形成できないと考えられる。
    このようなOTSのドメイン形成を利用することで、バウンダリー界面を有する2元系SAMの作製に成功した。ここではOTSとAHAPSの2元系SAMを作製した。このSAMの表面電位をケルビン力顕微鏡により計測したところ、OTSとAHAPSのドメインで表面電位が異なり、膜内での表面電位の分布は不均一であることがわかった。また、ドメインの境界では表面電位は不連続であった。これらの結果は、OTSのドメイン形成を利用することでSAM内に明確なバウンダリー界面を形成できることを示している。

  10. 生体1分子・静電ポテンシャル検出技術の開発

    2006.4 - 2008.3

    科学研究費補助金  若手研究(A)

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    Authorship:Principal investigator 

  11. Development of detection technology for electrostatic potential of single biomolecule

    Grant number:18686059  2006 - 2008

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Young Scientists (A)

    SAITO Nagahiro

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    Authorship:Principal investigator 

    Grant amount:\30290000 ( Direct Cost: \23300000 、 Indirect Cost:\6990000 )

  12. マイクロ波プラズマを用いたナノ細孔グラフティング重合修飾

    2005.4 - 2007.3

    科学研究費補助金 

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    Authorship:Principal investigator 

  13. 単一粒径ナノ粒子の連続調製システムの構築

    2005.4 - 2007.3

    科学研究費補助金 

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    Authorship:Coinvestigator(s) 

  14. マイクロ波プラズマを用いたナノ細孔内グラフティング重合修飾

    Grant number:17656234  2005 - 2006

    科学研究費助成事業  萌芽研究

    齋藤 永宏, 高井 治, 井上 泰志

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    Authorship:Principal investigator 

    Grant amount:\3500000 ( Direct Cost: \3500000 )

    本研究では、表面波プラズマによりポリマーの表面改質を行い、親水性のポリマーを基材に導入した。Arプラズマ照射後、真空を維持したまま、アクリル酸を空気中で気化させることによりチャンバー内に導入した。基板には、HDPE、PET、PPを用いた。Arプラズマ照射後アクリル酸に暴露したHDPEおよびPETでは、水滴接触角の変化は見られず、親水性を維持していた。また、PPについても水滴接触角の変化が緩やかであった。これは、プラズマ処理後アクリル酸に暴露することにより、高分子表面にアクリル酸重合体からなる親水性長鎖が作製され、その結果として親水性を維持したためである。また、水滴接触角の変化は、空気に暴露した場合、アクリル酸に暴露した場合ともに、HDPEがもっとも大きく、PET、PPの順に変化が小さくなった。これは、HDPEが主鎖断裂型に属し、PETが主鎖断裂型と副鎖断裂型の両方、PPが副鎖断裂型に属するためである。
    XPS測定によって、Arプラズマ照射後、空気に暴露した基盤では、主に、286.6eVの位置に示されるC-Oに起因するピークが出現した。これは空気中の酸素と反応することにより、高分子表面に-OH基が付与されたことを示す。一方、アクリル酸に暴露した基板では、288.9eVの位置に示される-CO-0のピークが出現した。これは-COOH基を示すものであり、アクリル酸が付与されたことを意味する。これらの結果から、Arプラズマによるラジカル開始重合により、HDPE、PP、PETの3種の高分子基板上にアクリル酸重合体の長鎖を作製できることを明らかにした。

  15. 単一粒径ナノ粒子の連続調製システムの構築

    Grant number:17655059  2005 - 2006

    科学研究費助成事業  萌芽研究

    米澤 徹, 齋藤 永宏

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    Authorship:Coinvestigator(s) 

    溶液中のプラズマを利用してナノ粒子を大量製造することを試みた。タングステン線を電極とし、高圧パルス電源を使用して、電極間に放電させ、プラズマを発生させた。電極間隔、印加電圧、電流、パルス間隔は、電極間にアーク放電が生じないようにするために適切に制御する必要があった。また、溶液の導電率をアルカリ金属塩の添加によって制御したが、それにはあまり大きく影響されなかった。このとき発生するラジカル、水素、電子によって金属イオンが還元されることが見出された。プラズマ計測を行ってみたところ、このような還元種が生成していることが見出された。また、金、白金、銀、パラジウム、ロジウムなどの貴金属イオンは還元されやすく、ナノ粒子を得ることができた。遷移金属塩からもナノ粒子が得られたように見受けられるが、十分な検証ができていない。多くの金属塩からナノ粒子を作ることに成功したが、ナノ粒子の安定性をさらに向上させるためには原料液の導電性制御のためのアルカリ金属塩の排除を行う必要があることが分かる。一方、原料塩のみでは還元によって導電性が変化していく問題があり、原料のさらなる検討が今後求められる。
    粒子径は、金属種にも依存するが、単一粒子径にほぼ近い形のものができ、全て球形のものが得られた。異方形状のものは残念ながら得られず、今後、更なる条件検討が必要である。
    さらに、連続調製装置を作製し、検討を行った。連続調製には、溶液の冷却が必要なため、投げ込みクーラーを取り付けた。さらに条件設定を密に行うことによって、連続大量製造に道筋をつけていく。
    成果としては、知的財産権として特許を出願し、学会発表を数回行った。今後は、さらに検討を進め、論文を執筆するほか、ナノ粒子原料についてより安価な原料からの調製を行っていく。

  16. バイオプローブリソグラフィーによるナノ反応場の制御

    2004.4 - 2008.3

    科学研究費補助金  基盤研究(A)

  17. 非晶質窒化炭素を用いた一酸窒素貯蔵バイオミメティックナノスキンの作製と評価

    2004.4 - 2007.3

    科学研究費補助金 

  18. Control of Nano-Reaction Field by Bio-Probe Nanolithography

    Grant number:16206072  2004 - 2007

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)

    TAKAI Osamu, SAITO Nagahiro, INOUE Yasushi, HOZUMI Atsushi

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    Construction of the molecular device is one of the biggest aims in nanotechnology. Nanolithography is essential to the formulation of such a molecular device. We have focused on Scanning Probe Lithography (SPL) as one of such nanolithographic techniques. In this study, we attempted to immobilize biomolecules such as proteins in nano-domains by SPL.
    At first, we have prepared surfaces with some surface characteristics by fabrication of self-ascembled monolayer (SAM) and investigated adsorption behaviors of biomolecules such as proteins on the SAMs. As a result, it was clarified that the surface wetting and surface potential, chemical affinity had great influences on the adsorption behavior of the biomolecules.
    Next, we have fabricated micropatterned surfaces with two different domains in the surface characteristics(surface wetting, surface potential, chemical affinity)by light lithography and observed adsorption behavior of biomolecules on them. Then it was confirmed that the adsorbent adhered to the specific domain of the micro-pattern. We successfully controlled the immobilization of the adsorbents on the specific surface by the surface characteristics mentioned above.
    Finally we have manufactured nanopatterned surfaces with different surface characteristics by SPL. Gold nanostructures on a silicon substrate were constructed by "Dip-Pen Nanolithography(DPN)"as one of SPL. Then, various kinds of frijol compounds were adsorbed on the structure body and surface characteristics of the nano-domain surface were controlled. We have successfully achieved position-selective immobilization of nanoparticles, as a model compound of a protein, and DNA.

  19. 非晶質窒化炭素を用いた一酸窒素貯蔵バイオミメティックナノスキンの作製と評価

    Grant number:16656225  2004 - 2005

    科学研究費助成事業  萌芽研究

    高井 治, 齋藤 永宏, 井上 泰志

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    ダイヤモンドは、あらゆる物質の中で最も硬く、非常に安定である。また、室温においてはどのような酸およびアルカリにも侵されない。電気的には絶縁性でありながら最高の熱伝導性をもつ。光学的には、紫外から赤外域の広い範囲において透明で、屈折率も非常に高い。ダイヤモンドの工業材料としての価値は高いが、大きくて良質な天然鉱石は稀有である。よって、以前からダイヤモンドを人工的に作ることが試みられてきたが、加工性が悪く、生産コストも高いため利用範囲は限られている。
    アモルファス炭化窒素(amorphous carbon:a-CN)は、CとHとNで構成されるアモルファス構造を有する炭素材料である。a-CNは、機械的特性、化学的安定性がその膜組成により異なる。現在、これらの化学的安定性を利用し、非血液凝固表面作製の試みが進められている。そこで、シールド型アークイオンプレーティングを用いてa-CN膜の作製を試みた。また、その表面における血液凝固の観点から成膜パラメーターの最適化を行った。
    本研究で具体的に行った項目、および、明らかにした項目は以下の通り。
    (1)アークイオンプレーティングにより生体適合性の有するアモルファス炭化窒素膜の作製に成功した
    (2)人新鮮末梢血を利用した、血液凝固テストを行い、SUS420J2と比較実験を行った。
    その結果、本研究で作製した表面は、著しくその非血液凝固性が向上したことが明らかとなった。

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Industrial property rights 118

  1. ミストセパレータ用の濾材

    森下 豪人,金 鎭、斉藤 泰啓、堀内 洋志、 齋藤 永宏、高井 治、稗田 純子、田辺 郁

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    Application no:102011084044.3  Date applied:2011.10

    Country of applicant:Domestic  

  2. ミストセパレータ用の濾材

    森下 豪人,金 鎭、斉藤 泰啓、堀内 洋志、 齋藤 永宏、高井 治、稗田 純子、田辺 郁

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    Application no:102011084044.3  Date applied:2011.10

    Country of applicant:Domestic  

  3. ミストセパレータ用の濾材

    森下 豪人,金 鎭、斉藤 泰啓、堀内 洋志、 齋藤 永宏、高井 治、稗田 純子、田辺 郁

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    Application no:2011-089172  Date applied:2011.4

    Announcement no:2012-96217 

    Country of applicant:Domestic  

  4. ミストセパレータ用の濾材

    森下 豪人,金 鎭、斉藤 泰啓、堀内 洋志、 齋藤 永宏、高井 治、稗田 純子、田辺 郁

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    Application no:2011-089172  Date applied:2011.4

    Announcement no:2012-96217 

    Country of applicant:Domestic  

  5. ナノ粒子、ナノ粒子生成方法及びナノ粒子生成装置

    高井 治、齋藤 永宏、稗田 純子、寺島 千晶、西村 芳実、菱田 茂二、陶山 光宏

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    Application no:2011-030065  Date applied:2011.2

    Announcement no:2012-167335 

    Country of applicant:Domestic  

  6. ナノ粒子、ナノ粒子生成方法及びナノ粒子生成装置

    高井 治、齋藤 永宏、稗田 純子、寺島 千晶、西村 芳実、菱田 茂二、陶山 光宏

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    Application no:2011-030065  Date applied:2011.2

    Announcement no:2012-167335 

    Country of applicant:Domestic  

  7. 紛体可溶化方法及び紛体可溶化装置

    高井 治、齋藤 永宏、稗田 純子、寺島 千晶、西村 芳実、菱田 茂二、陶山 光宏

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    Application no:2010-249018  Date applied:2010.11

    Announcement no:2012-101140 

    Country of applicant:Domestic  

  8. 紛体可溶化方法及び紛体可溶化装置

    高井 治、齋藤 永宏、稗田 純子、寺島 千晶、西村 芳実、菱田 茂二、陶山 光宏

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    Application no:2010-249018  Date applied:2010.11

    Announcement no:2012-101140 

    Country of applicant:Domestic  

  9. ポリアミドナノコンポジット

    高井 治、齋藤 永宏、白藤 立、稗田 純子、土本 昭春、岡部 洋治、野島 和宏

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    Application no:2010-157062  Date applied:2010.7

    Announcement no:2012-17443 

    Country of applicant:Domestic  

  10. 液中連続プラズマ生成のための電源装置

    高井 治、齋藤 永宏、白藤 立、稗田 純子、西村 芳美、菱田 茂二、柿谷 真一

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    Application no:2010-157116  Date applied:2010.7

    Announcement no:2012-018890 

    Country of applicant:Domestic  

  11. ポリアミドナノコンポジット

    高井 治、齋藤 永宏、白藤 立、稗田 純子、土本 昭春、岡部 洋治、野島 和宏

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    Application no:2010-157062  Date applied:2010.7

    Announcement no:2012-17443 

    Country of applicant:Domestic  

  12. 液中連続プラズマ生成のための電源装置

    高井 治、齋藤 永宏、白藤 立、稗田 純子、西村 芳美、菱田 茂二、柿谷 真一

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    Application no:2010-157116  Date applied:2010.7

    Announcement no:2012-018890 

    Country of applicant:Domestic  

  13. コロナ放電装置およびその利用

    高井 治、齋藤 永宏、白藤 立、稗田 純子、石黒 義和、村上 達洋、石崎 貴裕

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    Application no:2010-149347  Date applied:2010.6

    Announcement no:2012-014918 

    Country of applicant:Domestic  

  14. プラズマ加工方法およびプラズマ加工装置

    高井 治、齋藤 永宏、白藤 立、高橋 英昭

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    Application no:2010-150422  Date applied:2010.6

    Announcement no:2012-14958 

    Country of applicant:Domestic  

  15. ハーフミラー基板の製造方法およびハーフミラー基板

    高井 治、齋藤 永宏、白藤 立、趙 星彪、佐藤 信也

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    Application no:2010-150424  Date applied:2010.6

    Announcement no:2012-13948 

    Country of applicant:Domestic  

  16. 水処理方法および水処理装置

    高井 治、齋藤 永宏、白藤 立

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    Application no:2010-149629  Date applied:2010.6

    Announcement no:2012-11301 

    Country of applicant:Domestic  

  17. コロナ放電装置およびその利用

    高井 治、齋藤 永宏、白藤 立、稗田 純子、石黒 義和、村上 達洋、石崎 貴裕

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    Application no:2010-149347  Date applied:2010.6

    Announcement no:2012-014918 

    Country of applicant:Domestic  

  18. プラズマ加工方法およびプラズマ加工装置

    高井 治、齋藤 永宏、白藤 立、高橋 英昭

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    Application no:2010-150422  Date applied:2010.6

    Announcement no:2012-14958 

    Country of applicant:Domestic  

  19. ハーフミラー基板の製造方法およびハーフミラー基板

    高井 治、齋藤 永宏、白藤 立、趙 星彪、佐藤 信也

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    Application no:2010-150424  Date applied:2010.6

    Announcement no:2012-13948 

    Country of applicant:Domestic  

  20. 水処理方法および水処理装置

    高井 治、齋藤 永宏、白藤 立

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    Application no:2010-149629  Date applied:2010.6

    Announcement no:2012-11301 

    Country of applicant:Domestic  

  21. ダイヤモンドライクカーボン膜付基材の製造方法

    齋藤 永宏、高井治、稗田 純子、白藤 立

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    Application no:2010-083685  Date applied:2010.3

    Announcement no:2011-214085 

    Country of applicant:Domestic  

  22. ダイヤモンドライクカーボン膜付基材の製造方法

    齋藤 永宏、高井治、稗田 純子、白藤 立

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    Application no:2010-083685  Date applied:2010.3

    Announcement no:2011-214085 

    Country of applicant:Domestic  

  23. エレクトロクロミックミラー

    高井治,齋藤永宏,仲保 純一,服部正治,山口敦

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    Application no:2010-001997  Date applied:2010.1

    Announcement no:2011-141425 

    Country of applicant:Domestic  

  24. エレクトロクロミックミラー

    高井治,齋藤永宏,服部正治,仲保 純一,,山口敦

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    Application no:2010-001998  Date applied:2010.1

    Announcement no:2011-141426 

    Country of applicant:Domestic  

  25. エレクトロクロミックミラー

    高井治,齋藤永宏,仲保 純一,服部正治,山口敦

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    Application no:2010-001997  Date applied:2010.1

    Announcement no:2011-141425 

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  26. エレクトロクロミックミラー

    高井治,齋藤永宏,服部正治,仲保 純一,,山口敦

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    Application no:2010-001998  Date applied:2010.1

    Announcement no:2011-141426 

    Country of applicant:Domestic  

  27. エレクトロクロミックミラー

    高井治,齋藤永宏,御田村紘志, 仲保純一,服部正治,山口敦

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    Application no:2009-247912  Date applied:2009.10

    Announcement no:2011-95406 

    Country of applicant:Domestic  

  28. エレクトロクロミックミラー

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    Application no:2009-249010  Date applied:2009.10

    Announcement no:2011-95483 

    Country of applicant:Domestic  

  29. エレクトロクロミックミラー

    高井治,齋藤永宏,御田村紘志, 仲保純一,服部正治,山口敦

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    Application no:2009-247912  Date applied:2009.10

    Announcement no:2011-95406 

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  30. エレクトロクロミックミラー

    高井治,齋藤永宏,御田村紘志, 仲保純一,服部正治,山口敦

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    Application no:2009-249010  Date applied:2009.10

    Announcement no:2011-95483 

    Country of applicant:Domestic  

  31. エレクトロクロミックミラー

    齋藤 永宏,石崎貴裕,高井治,仲保純一,服部正治,山口敦

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    Application no:2008 10124992.3  Date applied:2008.6

    Announcement no:CN 101334567 A 

    Patent/Registration no:ZL 2008 1 0124992.3  Date registered:2010.6 

    Country of applicant:Foreign country  

  32. エレクトロクロミックミラー

    齋藤 永宏,石崎貴裕,高井治,仲保純一,服部正治,山口敦

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    Application no:2008 10124993.8  Date applied:2008.6

    Announcement no:CN 101334568 A 

    Country of applicant:Foreign country  

  33. エレクトロクロミックミラー

    齋藤 永宏,石崎貴裕,高井治,仲保純一,服部正治,山口敦

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    Application no:2008 10124989.1  Date applied:2008.6

    Announcement no:CN 101334566 A 

    Country of applicant:Foreign country  

  34. エレクトロクロミックミラー

    齋藤 永宏,石崎貴裕,高井治,仲保純一,服部正治,山口敦

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    Application no:2008 10124992.3  Date applied:2008.6

    Announcement no:CN 101334567 A 

    Patent/Registration no:ZL 2008 1 0124992.3  Date registered:2010.6 

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  35. エレクトロクロミックミラー

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    Application no:2008 10124993.8  Date applied:2008.6

    Announcement no:CN 101334568 A 

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  36. エレクトロクロミックミラー

    齋藤 永宏,石崎貴裕,高井治,仲保純一,服部正治,山口敦

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    Application no:2008 10124989.1  Date applied:2008.6

    Announcement no:CN 101334566 A 

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  37. エレクトロクロミックミラー

    齋藤 永宏,石崎貴裕,高井治,仲保純一,服部正治,山口敦

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    Application no:08 011 426.7  Date applied:2008.6

    Announcement no:EP 2009490 A2 

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  38. エレクトロクロミックミラー

    齋藤 永宏,石崎貴裕,高井治,仲保純一,服部正治,山口敦

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    Application no:08 011 425.9  Date applied:2008.6

    Announcement no:EP 2009492 A2 

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  39. エレクトロクロミックミラー

    齋藤 永宏,石崎貴裕,高井治,仲保純一,服部正治,山口敦

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    Application no:08 011 426.7  Date applied:2008.6

    Announcement no:EP 2009490 A2 

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  40. エレクトロクロミックミラー

    齋藤 永宏,石崎貴裕,高井治,仲保純一,服部正治,山口敦

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    Application no:08 011 425.9  Date applied:2008.6

    Announcement no:EP 2009492 A2 

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  41. エレクトロクロミックミラー

    齋藤 永宏,石崎貴裕,高井治,仲保純一,服部正治,山口敦

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    Application no:12/144,128  Date applied:2008.6

    Announcement no:US 2009002799 A1 

    Patent/Registration no:US 7,692,843 B2  Date registered:2010.4 

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  42. エレクトロクロミックミラー

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    Application no:08 011 369.9  Date applied:2008.6

    Announcement no:EP 2009491 A1 

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  43. エレクトロクロミックミラー

    齋藤 永宏,石崎貴裕,高井治,仲保純一,服部正治,山口敦

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    Application no:12/144,151  Date applied:2008.6

    Announcement no:US 2009002801 A1 

    Patent/Registration no:US 7,643,201 B2  Date registered:2010.1 

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  44. エレクトロクロミックミラー

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    Application no:12/144,104  Date applied:2008.6

    Announcement no:12/144,104 

    Patent/Registration no:US 7,800,807 B2  Date registered:2010.9 

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  45. エレクトロクロミックミラー

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    Application no:12/144,128  Date applied:2008.6

    Announcement no:US 2009002799 A1 

    Patent/Registration no:US 7,692,843 B2  Date registered:2010.4 

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  46. エレクトロクロミックミラー

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    Application no:08 011 369.9  Date applied:2008.6

    Announcement no:EP 2009491 A1 

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  47. エレクトロクロミックミラー

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    Application no:12/144,151  Date applied:2008.6

    Announcement no:US 2009002801 A1 

    Patent/Registration no:US 7,643,201 B2  Date registered:2010.1 

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  48. エレクトロクロミックミラー

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    Application no:12/144,104  Date applied:2008.6

    Announcement no:12/144,104 

    Patent/Registration no:US 7,800,807 B2  Date registered:2010.9 

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  49. 水中プラズマ滅菌方法及び水中プラズマ滅菌装置

    高井治, 齋藤永宏, 石崎貴裕, 長伸朗, 田中和士

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    Application no:2008-84342  Date applied:2008.3

    Announcement no:2009-233599 

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  50. 水中プラズマ滅菌方法及び水中プラズマ滅菌装置

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    Application no:2008-84342  Date applied:2008.3

    Announcement no:2009-233599 

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  51. エレクトロクロミックミラー

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    Application no:2008-029330  Date applied:2008.2

    Announcement no:2009031731 

    Patent/Registration no:4949287  Date registered:2012.3 

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  52. エレクトロクロミックミラー

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    Application no:2008-029330  Date applied:2008.2

    Announcement no:2009031731 

    Patent/Registration no:4949287  Date registered:2012.3 

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  53. エレクトロクロミックミラー

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    Announcement no:2009-8747 

    Patent/Registration no:4949136  Date registered:2012.3 

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  54. エレクトロクロミックミラー

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    Application no:2007-167914  Date applied:2007.6

    Announcement no:2009 - 8751 

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  55. エレクトロクロミックミラー

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    Application no:2007-167913  Date applied:2007.6

    Announcement no:2009 - 8750 

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  56. エレクトロクロミックミラー

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    Application no:2007-167912  Date applied:2007.6

    Announcement no:2009 - 8749 

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  57. エレクトロクロミックミラー

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    Application no:2007-167911  Date applied:2007.6

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  58. エレクトロクロミックミラー

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    Application no:2007-167910  Date applied:2007.6

    Announcement no:2009-8748 

    Patent/Registration no:5014893  Date registered:2012.6 

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  59. エレクトロクロミックミラー

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    Application no:2007-167909  Date applied:2007.6

    Announcement no:2009-8747 

    Patent/Registration no:4949136  Date registered:2012.3 

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  60. エレクトロクロミックミラー

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    Application no:2007-167914  Date applied:2007.6

    Announcement no:2009 - 8751 

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  61. エレクトロクロミックミラー

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    Application no:2007-167913  Date applied:2007.6

    Announcement no:2009 - 8750 

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  62. エレクトロクロミックミラー

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    Application no:2007-167912  Date applied:2007.6

    Announcement no:2009 - 8749 

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  63. エレクトロクロミックミラー

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    Application no:2007-167911  Date applied:2007.6

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  64. エレクトロクロミックミラー

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    Announcement no:2009-8748 

    Patent/Registration no:5014893  Date registered:2012.6 

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  65. 自己組織化単分子膜作製装置とその利用

    齋藤 永宏,石崎 貴裕,高井 治,石黒 義和

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    Application no:2006-352281  Date applied:2006.12

    Announcement no:2008-161779 

    Patent/Registration no:5099811  Date registered:2012.10 

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  66. 自己組織化単分子膜作製装置とその利用

    齋藤 永宏,石崎 貴裕,高井 治,石黒 義和

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    Application no:2006-352281  Date applied:2006.12

    Announcement no:2008-161779 

    Patent/Registration no:5099811  Date registered:2012.10 

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  67. 自己組織化単分子膜の作製方法

    齋藤 永宏,石崎 貴裕,高井 治

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    Application no:2006-218265  Date applied:2006.8

    Announcement no:2008-42129 

    Patent/Registration no:4590567  Date registered:2010.9 

    Country of applicant:Domestic  

  68. 自己組織化単分子膜の作製方法

    齋藤 永宏,石崎 貴裕,高井 治

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    Application no:2006-218265  Date applied:2006.8

    Announcement no:2008-42129 

    Patent/Registration no:4590567  Date registered:2010.9 

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  69. 金属ナノ粒子生成方法および金属ナノ粒子生成装置

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    Application no:2006-186042  Date applied:2006.7

    Announcement no:2008-13810 

    Country of applicant:Domestic  

  70. 金属ナノ粒子生成方法および金属ナノ粒子生成装置

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    Application no:2006-186042  Date applied:2006.7

    Announcement no:2008-13810 

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  71. 自己組織化単分子膜の作製法とその利用

    齋藤 永宏,石崎 貴裕,高井 治

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    Application no:2006-307962  Date applied:2006.4

    Announcement no:WO 2006/112408 

    Patent/Registration no:4065962  Date registered:2008.1 

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  72. 自己組織化単分子膜の作製法とその利用

    齋藤 永宏,石崎 貴裕,高井 治

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    Application no:2006-307962  Date applied:2006.4

    Announcement no:WO 2006/112408 

    Patent/Registration no:4065962  Date registered:2008.1 

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  73. 自己組織化単分子膜の作製方法とその利用

    齋藤 永宏,石崎貴裕,高井治

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    Application no:2007-528126  Date applied:2006.4

    Patent/Registration no:4065962  Date registered:2008.1 

    Country of applicant:Domestic  

  74. 自己組織化単分子膜の作製方法とその利用

    齋藤 永宏,石崎貴裕,高井治

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    Application no:2007-528126  Date applied:2006.4

    Patent/Registration no:4065962  Date registered:2008.1 

    Country of applicant:Domestic  

  75. 生体有機体の生産方法および培養容器

    齋藤 永宏,高井 治,呉 雲影,本多 裕之,井藤 彰

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    Application no:11200 6000657.6  Date applied:2006.3

    Announcement no:DE 11 2006 000 657 T5 

    Country of applicant:Foreign country  

  76. 生体有機体の生産方法および培養容器

    齋藤 永宏,石崎 貴裕,高井 治

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    Application no:PCT/JP2006/306498  Date applied:2006.3

    Announcement no:WO2006/106748 A1 

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  77. 生体有機体の生産方法および培養容器

    齋藤 永宏,高井 治,呉 雲影,本多 裕之,井藤 彰

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    Application no:11/909,909  Date applied:2006.3

    Announcement no:US 2009197333 A1 

    Patent/Registration no:US 7,951,584 B2  Date registered:2011.5 

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  78. 生体有機体の生産方法および培養容器

    齋藤 永宏,高井 治,呉 雲影,本多 裕之,井藤 彰

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    Application no:718648.9  Date applied:2006.3

    Announcement no:GB 2438565 A 

    Patent/Registration no:GB2438565  Date registered:2011.2 

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  79. 生体有機体の生産方法および培養容器

    齋藤 永宏,高井 治,呉 雲影,本多 裕之,井藤 彰

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    Application no:11200 6000657.6  Date applied:2006.3

    Announcement no:DE 11 2006 000 657 T5 

    Country of applicant:Domestic  

  80. 生体有機体の生産方法および培養容器

    齋藤 永宏,石崎 貴裕,高井 治

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    Application no:PCT/JP2006/306498  Date applied:2006.3

    Announcement no:WO2006/106748 A1 

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  81. 生体有機体の生産方法および培養容器

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    Application no:11/909,909  Date applied:2006.3

    Announcement no:US 2009197333 A1 

    Patent/Registration no:US 7,951,584 B2  Date registered:2011.5 

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  82. 生体有機体の生産方法および培養容器

    齋藤 永宏,高井 治,呉 雲影,本多 裕之,井藤 彰

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    Application no:718648.9  Date applied:2006.3

    Announcement no:GB 2438565 A 

    Patent/Registration no:GB2438565  Date registered:2011.2 

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  83. 水処理方法および水処理装置

    齋藤 永宏,高井 治,アニータ バイオレル,バロック パベル,小田 将智

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    Application no:2006-016858,  Date applied:2006.1

    Announcement no:2007-196121 

    Patent/Registration no:4635204  Date registered:2010.12 

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  84. エレクトロクロミックミラーおよびその製造方法

    齋藤 永宏,石崎 貴裕,高井 治,仲保 純一,服部 正治,山口 敦

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    Application no:2006-016968  Date applied:2006.1

    Announcement no:2007-199313 

    Country of applicant:Domestic  

  85. 水処理方法および水処理装置

    齋藤 永宏,高井 治,アニータ バイオレル,バロック パベル,小田 将智

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    Application no:2006-016858,  Date applied:2006.1

    Announcement no:2007-196121 

    Patent/Registration no:4635204  Date registered:2010.12 

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  86. エレクトロクロミックミラーおよびその製造方法

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    Application no:2006-016968  Date applied:2006.1

    Announcement no:2007-199313 

    Country of applicant:Domestic  

  87. 再帰性反射剤およびその製造方法

    齋藤 永宏,石崎 貴裕,高井 治,雨森 正次郎

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    Application no:2005-311242  Date applied:2005.10

    Announcement no:2007-121521 

    Patent/Registration no:4728091  Date registered:2011.4 

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  88. 再帰性反射剤およびその製造方法

    齋藤 永宏,石崎 貴裕,高井 治,雨森 正次郎

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    Application no:2005-311242  Date applied:2005.10

    Announcement no:2007-121521 

    Patent/Registration no:4728091  Date registered:2011.4 

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  89. 金属酸化物膜の製造方法

    齋藤 永宏,石崎 貴裕,高井 治

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    Application no:2005-305333  Date applied:2005.10

    Patent/Registration no:4729704  Date registered:2011.4 

    Country of applicant:Domestic  

  90. 金属酸化物膜の製造方法

    齋藤 永宏,石崎 貴裕,高井 治

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    Application no:2005-305333  Date applied:2005.10

    Patent/Registration no:4729704  Date registered:2011.4 

    Country of applicant:Domestic  

  91. 細胞培養物の生産と該生産に用いる材料

    齋藤 永宏,高井 治,呉 雲影,本多 裕之,井藤 彰

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    Application no:2006-535184  Date applied:2005.9

    Announcement no:WO2006/028274 

    Patent/Registration no:4843793  Date registered:2011.10 

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  92. 細胞培養物の生産と該生産に用いる材料

    齋藤 永宏,高井 治,呉 雲影,本多 裕之,井藤 彰

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    Application no:2006-535184  Date applied:2005.9

    Announcement no:WO2006/028274 

    Patent/Registration no:4843793  Date registered:2011.10 

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  93. 細胞培養の生産と該生産に用いる材料

    齋藤 永宏,高井 治,呉 雲影,本多 裕之,井藤 彰

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    Application no:2005-016989  Date applied:2005.9

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  94. 細胞培養の生産と該生産に用いる材料

    齋藤 永宏,高井 治,呉 雲影,本多 裕之,井藤 彰

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    Application no:11/574,949  Date applied:2005.9

    Announcement no:US-2008-0032403-A1 

    Patent/Registration no:US 7,883,865 B2  Date registered:2011.2 

    Country of applicant:Foreign country  

  95. 細胞培養の生産と該生産に用いる材料

    齋藤 永宏,高井 治,呉 雲影,本多 裕之,井藤 彰

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    Application no:2005-016989  Date applied:2005.9

    Country of applicant:Domestic  

  96. 細胞培養の生産と該生産に用いる材料

    齋藤 永宏,高井 治,呉 雲影,本多 裕之,井藤 彰

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    Application no:11/574,949  Date applied:2005.9

    Announcement no:US-2008-0032403-A1 

    Patent/Registration no:US 7,883,865 B2  Date registered:2011.2 

    Country of applicant:Domestic  

  97. 生体有機体の培養及び生産方法

    齋藤 永宏,高井 治,呉 雲影,本多 裕之,井藤 彰

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    Application no:2005-244946  Date applied:2005.8

    Country of applicant:Domestic  

  98. 生体有機体の培養及び生産方法

    齋藤 永宏,高井 治,呉 雲影,本多 裕之,井藤 彰

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    Application no:2005-244946  Date applied:2005.8

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  99. 自己組織化単分子膜の作製方法および作製装置

    齋藤 永宏,石崎貴裕,高井治

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    Application no:2005-118932  Date applied:2005.4

    Country of applicant:Domestic  

  100. 自己組織化単分子膜の作製方法および作製装置

    齋藤 永宏,石崎貴裕,高井治

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    Application no:2005-118932  Date applied:2005.4

    Country of applicant:Domestic  

  101. 生体有機体の生産方法と該方法に用いる容器

    齋藤 永宏,高井 治,呉 雲影,本多 裕之,井藤 彰

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    Application no:2005-099509  Date applied:2005.3

    Announcement no:2006-106748 

    Patent/Registration no:4639340  Date registered:2010.12 

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  102. 生体有機体の生産方法と該方法に用いる容器

    齋藤 永宏,高井 治,呉 雲影,本多 裕之,井藤 彰

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    Application no:2005-099509  Date applied:2005.3

    Announcement no:2006-106748 

    Patent/Registration no:4639340  Date registered:2010.12 

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  103. 所定のパターンの細胞培養物生産方法及び該生産用基板

    齋藤 永宏,高井 治,呉 雲影,本多 裕之,井藤 彰

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    Application no:2004-261216  Date applied:2004.9

    Country of applicant:Domestic  

  104. 所定のパターンの細胞培養物生産方法及び該生産用基板

    齋藤 永宏,高井 治,呉 雲影,本多 裕之,井藤 彰

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    Application no:2004-261216  Date applied:2004.9

    Country of applicant:Domestic  

  105. 撥水性を有するメッキ層を備えたメッキ製品及びその製造方法

    高井 治,齋藤 永宏

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    Application no:2004-239648  Date applied:2004.8

    Announcement no:2006-057131 

    Patent/Registration no:4682318  Date registered:2011.2 

    Country of applicant:Domestic  

  106. プラズマCVD装置および硬質炭素膜の製造方法

    高井 治,齋藤 永宏,アニータ バイオレル

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    Application no:2004-239669   Date applied:2004.8

    Announcement no:2006-057132 

    Patent/Registration no:4649605  Date registered:2010.12 

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  107. 撥水性を有するメッキ層を備えたメッキ製品及びその製造方法

    高井 治,齋藤 永宏

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    Application no:2004-239648  Date applied:2004.8

    Announcement no:2006-057131 

    Patent/Registration no:4682318  Date registered:2011.2 

    Country of applicant:Domestic  

  108. プラズマCVD装置および硬質炭素膜の製造方法

    高井 治,齋藤 永宏,アニータ バイオレル

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    Application no:2004-239669  Date applied:2004.8

    Announcement no:2006-057132 

    Patent/Registration no:4649605  Date registered:2010.12 

    Country of applicant:Domestic  

  109. マイクロパターン形成方法、マイクロパターン、マイクロパターン転写形成用モールドの作製方法、及びマイクロパターン転写形成用モールド

    杉村 博之,齋藤 永宏,高井 治

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    Application no:10/901,078  Date applied:2004.7

    Announcement no:US 7,229,748 B2 

    Country of applicant:Foreign country  

  110. マイクロパターン形成方法、マイクロパターン、マイクロパターン転写形成用モールドの作製方法、及びマイクロパターン転写形成用モールド

    杉村 博之,齋藤 永宏,高井 治

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    Application no:10/901,078  Date applied:2004.7

    Announcement no:US 7,229,748 B2 

    Country of applicant:Domestic  

  111. 無電解めっき方法とその利用

    高井 治,齋藤 永宏,呉 雲影

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    Applicant:齋藤 永宏

    Application no:2004-097102  Date applied:2004.3

    Announcement no:2005-281766 

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  112. パターン形成方法及び装置

    杉村 博之,齋藤 永宏,高井 治

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    Application no:2004-097066  Date applied:2004.3

    Announcement no:2005-283929 

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  113. 無電解めっき方法とその利用

    高井 治,齋藤 永宏,呉 雲影

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    Applicant:齋藤 永宏

    Application no:2004-097102  Date applied:2004.3

    Announcement no:2005-281766 

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  114. パターン形成方法及び装置

    杉村 博之,齋藤 永宏,高井 治

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    Application no:2004-097066  Date applied:2004.3

    Announcement no:2005-283929 

    Country of applicant:Domestic  

  115. 金属配線の作製方法および該方法に使用する金属配線転写用モールド

    杉村 博之,齋藤 永宏,高井 治

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    Applicant:杉村 博之,齋藤 永宏,高井 治

    Application no:2004-018272  Date applied:2004.1

    Announcement no:2005-216907 

    Country of applicant:Domestic  

  116. 金属配線の作製方法および該方法に使用する金属配線転写用モールド

    杉村 博之,齋藤 永宏,高井 治

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    Applicant:杉村 博之,齋藤 永宏,高井 治

    Application no:2004-018272  Date applied:2004.1

    Announcement no:2005-216907 

    Country of applicant:Domestic  

  117. マイクロパターンの形成方法,マイクロパターン,マイクロパターン転写形成用モールドの作製方法,及びマイクロパターン転写形成用モールド

    杉村 博之,齋藤 永宏,高井 治

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    Application no:2003-293411  Date applied:2003.8

    Announcement no:2005-064289 

    Patent/Registration no:3749950  Date registered:2005.12 

    Country of applicant:Domestic  

  118. マイクロパターンの形成方法,マイクロパターン,マイクロパターン転写形成用モールドの作製方法,及びマイクロパターン転写形成用モールド

    杉村 博之,齋藤 永宏,高井 治

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    Application no:2003-293411  Date applied:2003.8

    Announcement no:2005-064289 

    Patent/Registration no:3749950  Date registered:2005.12 

    Country of applicant:Domestic  

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Teaching Experience (On-campus) 13

  1. 博士論文研究ⅠA/ Dissertation ⅠA

    2023

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    国際専攻授業

  2. 博士論文研究ⅡA/ Dissertation ⅡA

    2023

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    国際専攻授業

  3. 博士論文研究ⅢA/ Dissertation ⅢA

    2023

     詳細を見る

    国際専攻授業

  4. 博士論文研究ⅣA/ Dissertation ⅣA

    2023

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    国際専攻授業

  5. サステナブル材料工学特別講義IA Special Topics in Sustainable Material Technology IA

    2023

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    国際専攻授業

  6. サステナブル材料工学特別講義ⅡA Special Topics in Sustainable Material Technology ⅡA

    2023

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    国際専攻授業

  7. 炭素ゼロナイゼーション特論

    2023

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    キャンパスアジアプログラム講義

  8. 有機材料学

    2013

  9. 材料物理学演習

    2013

  10. 統計力学A

    2013

  11. 材料プロセス計測工学

    2013

  12. 材料計測工学特論

    2013

  13. First Year Seminar A

    2011

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