2022/04/12 更新

写真a

サイトウ ナガヒロ
齋藤 永宏
SAITO, Nagahiro
所属
未来社会創造機構 マテリアルイノベーション研究所 エネルギーマテリアル研究部門 教授
大学院工学研究科 教授
大学院担当
大学院工学研究科
職名
教授
連絡先
メールアドレス

学位 1

  1. 博士(工学) ( 2000年3月   早稲田大学 ) 

研究キーワード 6

  1. 有機デバイス

  2. 化学反応解析

  3. 触媒

  4. グラフェン

  5. ソリューションプラズマ

  6. 有機デバイス

研究分野 8

  1. ナノテク・材料 / ナノ材料科学

  2. ナノテク・材料 / 基礎物理化学  / 物理化学

  3. エネルギー / プラズマ応用科学

  4. ナノテク・材料 / ナノ構造化学

  5. ナノテク・材料 / ナノ構造物理

  6. ナノテク・材料 / 薄膜、表面界面物性  / 機能材料・デバイス

  7. ナノテク・材料 / 複合材料、界面  / 材料加工・処理

  8. ナノテク・材料 / 金属生産、資源生産

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現在の研究課題と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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経歴 13

  1. 名古屋大学   工学研究科化学システム工学専攻   教授

    2017年4月 - 現在

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    国名:日本国

  2. 名古屋大学   工学研究科化学システム工学専攻   教授

    2017年4月 - 現在

  3. 名古屋大学未来社会創造機構   教授

    2014年4月 - 現在

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    国名:日本国

  4. 名古屋大学   運営支援組織等 産学官連携推進本部   副本部長

    2012年10月 - 2016年3月

  5. 名古屋大学   総長補佐(産学官連携担当)

    2012年4月 - 2016年3月

  6. 名古屋大学   エコトピア科学研究所 ナノマテリアル科学研究部門   教授

    2011年7月 - 2017年3月

  7. 名古屋大学   大学院工学研究科 マテリアル理工学専攻 極限構造材料工学   教授

    2011年7月 - 2017年3月

  8. 名古屋大学グリーンモビリティ連携研究センター・教授

    2011年7月 - 2016年3月

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    国名:日本国

  9. 名古屋大学エコトピア科学研究所・教授

    2009年4月 - 2011年6月

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    国名:日本国

  10. 名古屋大学工学研究科物質制御工学専攻・准教授

    2004年3月 - 2009年3月

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    国名:日本国

  11. 名古屋大学工学研究科リサーチアソシエイト

    2000年10月 - 2004年3月

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    国名:日本国

  12. 早稲田大学理工学部・助手

    2000年4月 - 2000年9月

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    国名:日本国

  13. 日本学術振興会・特別研究員

    1997年4月 - 2000年3月

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    国名:日本国

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学歴 4

  1. 早稲田大学   理工学研究科   資源及び材料工学専攻

    - 2000年3月

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    国名: 日本国

  2. 早稲田大学   理工学研究科   資源及び材料工学専攻

    - 2000年3月

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    国名: 日本国

  3. 早稲田大学   理工学研究科   資源及び材料工学専攻

    - 1997年3月

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    国名: 日本国

  4. 早稲田大学   理工学部

    1991年4月 - 1995年3月

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    国名: 日本国

所属学協会 7

  1. 表面技術協会   理事(国際担当)

    2004年4月 - 現在

  2. 日本MRS   常任理事

    2008年4月 - 2009年3月

  3. 日本表面科学会   中部支部幹事

    2006年4月 - 現在

  4. 日本応用物理学会

  5. 日本化学会

  6. 資源素材学会   評議委員

    2016年4月 - 現在

  7. 日本金属学会

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委員歴 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年12月 - 現在   

受賞 33

  1. Excellence Award of Poster Presentation

    2011年1月   The 12th International Symposium on Eco-materials Processing and Design  

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    受賞国:タイ王国

  2. Excellence Award of Poster Presentation

    2011年1月   The 12th International Symposium on Eco-materials Processing and Design  

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    受賞区分:国際学会・会議・シンポジウム等の賞  受賞国:タイ王国

  3. Excellence Award of Poster Presentation

    2011年1月   The 12th International Symposium on Eco-materials Processing and Design  

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    受賞区分:国内外の国際的学術賞  受賞国:タイ王国

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

    2010年10月   ASIA-PACIFIC INTERFINISH 2010  

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    受賞国:シンガポール共和国

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

    2010年10月   ASIA-PACIFIC INTERFINISH 2010  

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    受賞区分:国際学会・会議・シンポジウム等の賞  受賞国:シンガポール共和国

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

    2007年9月   日本MRS  

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    受賞国:日本国

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

    2007年9月   日本MRS  

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    受賞区分:国際学会・会議・シンポジウム等の賞  受賞国:日本国

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

    2006年12月   IUMRS-ICA-2006  

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    受賞国:日本国

  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年12月   表面技術協会  

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    受賞国:日本国

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

    2006年12月   IUMRS-ICA-2006  

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    受賞区分:国際学会・会議・シンポジウム等の賞  受賞国:日本国

  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年12月   表面技術協会  

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    受賞区分:国際学会・会議・シンポジウム等の賞  受賞国:日本国

  12. 日本金属学会2006年秋期大会優秀ポスター賞

    2006年9月   日本金属学会  

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    受賞国:日本国

  13. 日本金属学会2006年秋期大会優秀ポスター賞

    2006年9月   日本金属学会  

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    受賞区分:国際学会・会議・シンポジウム等の賞  受賞国:日本国

  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年3月   表面技術協会  

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    受賞国:日本国

  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年3月   表面技術協会  

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    受賞区分:国際学会・会議・シンポジウム等の賞  受賞国:日本国

  16. 表面技術協会・中部支部若手講演奨励賞

    2005年12月   表面技術協会  

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    受賞国:日本国

  17. 第16回日本MRS学術シンポジウム奨励賞

    2005年12月   日本MRS  

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    受賞国:日本国

  18. 表面技術協会・中部支部若手講演奨励賞

    2005年12月   表面技術協会  

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    受賞区分:国際学会・会議・シンポジウム等の賞  受賞国:日本国

  19. 第16回日本MRS学術シンポジウム奨励賞

    2005年12月   日本MRS  

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    受賞区分:国際学会・会議・シンポジウム等の賞  受賞国:日本国

  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年3月   表面技術協会  

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    受賞国:日本国

  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年3月   表面技術協会  

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    受賞区分:国際学会・会議・シンポジウム等の賞  受賞国:日本国

  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年12月   日本MRS  

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    受賞国:日本国

  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年12月   日本MRS  

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    受賞区分:国際学会・会議・シンポジウム等の賞  受賞国:日本国

  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年9月   日本金属学会  

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    受賞国:日本国

  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年9月   日本金属学会  

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    受賞区分:国際学会・会議・シンポジウム等の賞  受賞国:日本国

  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年12月   表面技術協会  

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    受賞国:日本国

  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年12月   表面技術協会  

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    受賞区分:国際学会・会議・シンポジウム等の賞  受賞国:日本国

  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年3月   表面技術協会  

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    受賞国:日本国

  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年3月   表面技術協会  

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    受賞区分:国際学会・会議・シンポジウム等の賞  受賞国:日本国

  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年3月   表面技術協会  

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    受賞国:日本国

  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年3月   表面技術協会  

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    受賞区分:国際学会・会議・シンポジウム等の賞  受賞国:日本国

  32. 日本MRS第13回学術講演奨励賞

    2001年12月   日本MRS  

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    受賞国:日本国

  33. 日本MRS第13回学術講演奨励賞

    2001年12月   日本MRS  

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    受賞区分:国際学会・会議・シンポジウム等の賞  受賞国:日本国

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論文 936

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

    Kim H.

    Scientific Reports   8 巻 ( 1 )   2018年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Scientific Reports  

    DOI: 10.1038/s41598-018-22203-1

    Web of Science

    Scopus

  2. 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   106 巻   頁: 243 - 252   2022年2月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Journal of Industrial and Engineering Chemistry  

    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

    Scopus

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

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

    Materials Letters   309 巻   2022年2月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Materials Letters  

    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

    Scopus

  4. 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   12 巻 ( 1 ) 頁: 193 - 200   2021年12月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:RSC Advances  

    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

    Scopus

  5. 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   184 巻   頁: 609 - 617   2021年10月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Carbon  

    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

    Scopus

  6. ソリューションプラズマによる電池材料の開発 招待有り 査読有り

    澤田康之、齋藤永宏

    日本材料科学会誌   58 巻 ( 5 ) 頁: 14 - 17   2021年10月

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    担当区分:最終著者, 責任著者   記述言語:日本語   掲載種別:研究論文(学術雑誌)  

  7. 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   11 巻 ( 43 ) 頁: 26785 - 26790   2021年7月

     詳細を見る

    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:RSC Advances  

    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

    Scopus

  8. 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   13 巻 ( 26 ) 頁: 30556 - 30564   2021年7月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ACS Applied Materials and Interfaces  

    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

    Scopus

  9. 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   60 巻 ( 7 )   2021年7月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Japanese Journal of Applied Physics  

    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

    Scopus

  10. 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   4 巻 ( 6 ) 頁: 5606 - 5614   2021年6月

     詳細を見る

    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ACS Applied Energy Materials  

    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

    Scopus

  11. 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   22 巻 ( 9 )   2021年5月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:International Journal of Molecular Sciences  

    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

    Scopus

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

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

    Materials Advances   2 巻 ( 8 ) 頁: 2636 - 2641   2021年4月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元: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

    Scopus

  13. 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   13 巻 ( 7 )   2021年4月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Polymers  

    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

    Scopus

  14. How to Select and Use Tools? : Active Perception of Target Objects Using Multimodal Deep Learning

    Saito N., Ogata T., Funabashi S., Mori H., Sugano S.

    IEEE Robotics and Automation Letters   6 巻 ( 2 ) 頁: 2517 - 2524   2021年4月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:IEEE Robotics and Automation Letters  

    Selection of appropriate tools and use of them when performing daily tasks is a critical function for introducing robots for domestic applications. In previous studies, however, adaptability to target objects was limited, making it difficult to accordingly change tools and adjust actions. To manipulate various objects with tools, robots must both understand tool functions and recognize object characteristics to discern a tool-object-action relation. We focus on active perception using multimodal sensorimotor data while a robot interacts with objects, and allow the robot to recognize their extrinsic and intrinsic characteristics. We construct a deep neural networks (DNN) model that learns to recognize object characteristics, acquires tool-object-action relations, and generates motions for tool selection and handling. As an example tool-use situation, the robot performs an ingredients transfer task, using a turner or ladle to transfer an ingredient from a pot to a bowl. The results confirm that the robot recognizes object characteristics and servings even when the target ingredients are unknown. We also examine the contributions of images, force, and tactile data and show that learning a variety of multimodal information results in rich perception for tool use.

    DOI: 10.1109/LRA.2021.3062004

    Scopus

  15. 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   2 巻 ( 1 ) 頁: 322 - 335   2021年

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Materials Advances  

    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

    Web of Science

    Scopus

  16. Natural Self-Confined Structure Effectively Suppressing Volume Expansion toward Advanced Lithium Storage

    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年

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ACS Applied Materials and Interfaces  

    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

    Scopus

  17. 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     2021年

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Nano Research  

    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

    Scopus

  18. Study of muonium emission from laser-ablated silica aerogel

    Beare J., Beer G., Brewer J.H., Iijima T., Ishida K., Iwasaki M., Kamal S., Kanamori K., Kawamura N., Kitamura R., Li S., Luke G.M., Marshall G.M., Mibe T., Miyake Y., Oishi Y., Olchanski K., Olin A., Otani M., Rehman M.A., Saito N., Sato Y., Shimomura K., Suzuki K., Tabata M., Yasuda G.

    Progress of Theoretical and Experimental Physics   2020 巻 ( 12 )   2020年12月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Progress of Theoretical and Experimental Physics  

    The emission of muonium (μ+e-) atoms into vacuum from silica aerogel with laser ablation on its surface was studied with various ablation structures at room temperature using the subsurface muon beams at TRIUMF and Japan Proton Accelerator Research Complex (J-PARC). Laser ablation was applied to produce holes or grooves with typical dimensions of a few hundred μm to a few mm, except for some extreme conditions. The measured emission rate tends to be higher for larger fractions of ablation opening and for shallower depths. More than a few ablation structures reach the emission rates similar to the highest achieved in past measurements. The emission rate is found to be stable at least for a couple of days. Measurements of spin precession amplitudes for the produced muonium atoms and remaining muons in a magnetic field determine a muonium formation fraction of (65.5 pm 1.8)%. The precession of the polarized muonium atoms is also observed clearly in vacuum. A projection of the emission rates measured at TRIUMF to the corresponding rates at J-PARC is demonstrated taking the different beam condition into account reasonably.

    DOI: 10.1093/ptep/ptaa145

    Scopus

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

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

    Energy Storage Materials   33 巻   頁: 442 - 451   2020年12月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Energy Storage Materials  

    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

    Scopus

  20. Wiping 3D-objects using deep learning model based on image/force/joint information

    Saito N., Wang D., Ogata T., Mori H., Sugano S.

    IEEE International Conference on Intelligent Robots and Systems     頁: 10152 - 10157   2020年10月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:IEEE International Conference on Intelligent Robots and Systems  

    We propose a deep learning model for a robot to wipe 3D-objects. Wiping of 3D-objects requires recognizing the shapes of objects and planning the motor angle adjustments for tracing the objects. Unlike previous research, our learning model does not require pre-designed computational models of target objects. The robot is able to wipe the objects to be placed by using image, force, and arm joint information. We evaluate the generalization ability of the model by confirming that the robot handles untrained cube and bowl shaped-objects. We also find that it is necessary to use both image and force information to recognize the shape of and wipe 3D objects consistently by comparing changes in the input sensor data to the model. To our knowledge, this is the first work enabling a robot to use learning sensorimotor information alone to trace various unknown 3D-shape.

    DOI: 10.1109/IROS45743.2020.9341275

    Scopus

  21. Single-walled carbon nanotubes wrapped by cationic nitrogen-doped carbon for electrocatalytic applications

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

    ACS Applied Nano Materials   3 巻 ( 10 ) 頁: 10183 - 10189   2020年10月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元: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

    Scopus

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

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

    RSC Advances   10 巻 ( 60 ) 頁: 36627 - 36635   2020年10月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元: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

    Scopus

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

    Chokradjaroen C.

    Carbohydrate Polymers   237 巻   2020年6月

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    担当区分:最終著者   掲載種別:研究論文(学術雑誌)   出版者・発行元:Carbohydrate Polymers  

    DOI: 10.1016/j.carbpol.2020.116162

    Scopus

  24. A Needle-type complementary metal oxide semiconductor-compatible glucose fuel cell fabricated by carbon nanohorns for biomedical applications 招待有り

    Md. Zahidul Islam, Naofumi Matsuyama, Guowei Chen, Atsuki Kobayashi, Yuichi Momoi and Kiichi Niitsu

    Electrochemistry   88 巻 ( 4 ) 頁: 333 - 335   2020年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  25. Pyridine tetrafluoro-λ<sup>6</sup>-sulfanyl chlorides: spontaneous addition to alkynes and alkenes in the presence or absence of photo-irradiation

    Niina K., Tanagawa K., Sumii Y., Saito N., Shibata N.

    Organic Chemistry Frontiers   7 巻 ( 10 ) 頁: 1276 - 1282   2020年5月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Organic Chemistry Frontiers  

    An addition reaction of pyridine-tetrafluoro-λ6-sulfanylchlorides (Py-SF4Cl) to alkynes and alkenes providing pyridine-tetrafluoro-λ6-sulfanyl-alkenes and pyridine-tetrafluoro-λ6-sulfanyl-alkanes is represented. The addition of Py-SF4Cl occurs spontaneously in the presence of reactants, even in total darkness, but is affected in the presence of light. A series of SF4-bridged pyridines were efficiently synthesized under a couple of environmentally benign conditions in good to high yields. The spontaneous reaction of Py-SF4Cl is discussed based on the time-dependent analyses of the reaction in the presence or absence of photo-irradiation, and could proceed via a radical process.

    DOI: 10.1039/d0qo00339e

    Scopus

  26. Fabrication of biocomposite membrane with microcrystalline cellulose (MCC) extracted from sugarcane bagasse by phase inversion method 国際共著

    Thiangtham S.

    Cellulose   27 巻 ( 3 ) 頁: 1367 - 1384   2020年2月

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    担当区分:最終著者   掲載種別:研究論文(学術雑誌)   出版者・発行元:Cellulose  

    DOI: 10.1007/s10570-019-02866-3

    Scopus

  27. Liquid-Phase Plasma-Assisted in Situ Synthesis of Amino-Rich Nanocarbon for Transition Metal Ion Adsorption 国際共著

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

    ACS Applied Nano Materials   3 巻 ( 1 ) 頁: 218 - 228   2020年1月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ACS Applied Nano Materials  

    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

    Scopus

  28. Simultaneous deacetylation and degradation of chitin hydrogel by electrical discharge plasma using low sodium hydroxide concentrations 国際共著

    Rujiravanit R.

    Carbohydrate Polymers   228 巻   2020年1月

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    担当区分:最終著者   掲載種別:研究論文(学術雑誌)   出版者・発行元:Carbohydrate Polymers  

    DOI: 10.1016/j.carbpol.2019.115377

    Scopus

  29. Muon acceleration test with the RFQ towards the development of the muon linac

    Kitamura R., Li S., Otani M., Fukao Y., Futatsukawa K., Kawamura N., Mibe T., Miyake Y., Yamazaki T., Kondo Y., Hasegawa K., Morishita T., Bae S., Kim B., Choi S., Iijima T., Sue Y., Iinuma H., Nakazawa Y., Ishida K., Razuvaev G., Saito N.

    Proceedings of the 29th Linear Accelerator Conference, LINAC 2018     頁: 342 - 345   2020年

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Proceedings of the 29th Linear Accelerator Conference, LINAC 2018  

    The muon linac is planned at the Japan Proton Accelerator Research Complex (J-PARC) for the precision measurement of the muon dipole moments. However, the muon acceleration with an radio-frequency (RF) accelerator was not carried out yet. Then, the first muon RF acceleration experiment using an radio-frequency quadrupole (RFQ) linac was carried out in the J-PARC. The incident positive muon was cooled using the production of the negative muonium ion (Mu-) before the accelaration. Subsequently, the Mu- was accelerated to 89 keV with the RFQ. Thanks to the pulsed muon beam in the J-PARC, the accelerated Mu- was clearly identified with the Time-Of-Flight measurement after the momentum selection with the bending magnet. The measured event rate of the accelerated Mu- was consistent with the expectation using the simulation and the result of the Mu- production experiment as the preparatory experiment of the acceleration experiment. The first muon RF acceleration was successful.

    DOI: 10.18429/JACoW-LINAC2018-TUPO010

    Scopus

  30. Prototype of an inter-digital H-mode drift-tube LinAc for muon linac

    Nakazawa Y., Iinuma H., Iwata Y., Iwashita Y., Otani M., Kawamura N., Mibe T., Yamazaki T., Yoshida M., Kitamura R., Yasuda H., Kondo Y., Hasegawa K., Morishita T., Saito N., Sue Y., Hayashizaki N.

    Proceedings of the 29th Linear Accelerator Conference, LINAC 2018     頁: 180 - 183   2020年

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Proceedings of the 29th Linear Accelerator Conference, LINAC 2018  

    An inter-digital H-mode (IH) drift-tube linac (DTL) is developed for a low velocity part in a muon linac at the J-PARC E34 experiment. It will accelerate muons from ß = 0.08 to 0.28 at an operational frequency of 324 MHz. In order to achieve higher acceleration efficiency and make cost lower, an alternative phase focusing (APF) scheme is adopted. A prototype with 6 cells of 0.45 m length was manufactured. The prototype accelerates muons from ß = 0.08 to 0.15 stage. We conducted frequency measurement and bead-pull measurement as a low-power measurement, in order to evaluate the prototype product. In this paper, the results of the low-power measurement for prototype cavity will be presented.

    DOI: 10.18429/JACoW-LINAC2018-MOPO085

    Scopus

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

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

    ACS Applied Nano Materials   2 巻 ( 12 ) 頁: 8051 - 8062   2019年12月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ACS Applied Nano Materials  

    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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  32. Negative Muonium Ion Production with a C12A7 Electride Film

    Otani M., Fukao Y., Futatsukawa K., Kawamura N., Matoba S., Mibe T., Miyake Y., Shimomura K., Yamazaki T., Hasegawa K., Kitamura R., Kondo Y., Morishita T., Iijima T., Inami K., Sue Y., Yotsuzuka M., Iinuma H., Nakazawa Y., Ishida K., Saito N., Yasuda H.

    Journal of Physics: Conference Series   1350 巻 ( 1 )   2019年12月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Journal of Physics: Conference Series  

    Negative muonium atom (μ + e - e -, Mu-) has unique features stimulating potential interesting for several scientific fields. Since its discovery in late 1980's in vacuum, it has been discussed that the production efficiency would be improved using a low-work function material. C12A7 was a well-known insulator as a constituent of alumina cement, but was recently confirmed to exhibit electric conductivity by electron doping. The C12A7 electride has relatively low-work function (2.9 eV). In this paper, the negative muonium production measurement with several materials including a C12A7 electride film will be presented.

    DOI: 10.1088/1742-6596/1350/1/012067

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  33. 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   9 巻 ( 12 )   2019年12月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Nanomaterials  

    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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  34. Real-time liquid pouring motion generation: End-to-end sensorimotor coordination for unknown liquid dynamics trained with deep neural networks

    Saito N., Dai N.B., Ogata T., Mori H., Sugano S.

    IEEE International Conference on Robotics and Biomimetics, ROBIO 2019     頁: 1077 - 1082   2019年12月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:IEEE International Conference on Robotics and Biomimetics, ROBIO 2019  

    We propose a sensorimotor dynamical system model for pouring unknown liquids. With our system, a robot holds and shakes a bottle to estimate the characteristics of the contained liquid, such as viscosity and fill level, without calculating to determine their parameters. Next, the robot pours a specified amount of the liquid into another container. The system needs to integrate information on the robot's actions, the liquids, the container, and the surrounding environment to perform the estimation and execute a continuous pouring motion using the same model. We use deep neural networks (DNN) to construct the system. The DNN model repeats prediction and execution of the actions to be taken in the next time step based on the input sensorimotor data, including camera images, force sensor data, and joint angles. At the same time, the DNN model acquires liquid characteristics in the internal state. We confirmed that the DNN model can control the robot to pour a desired amount of liquid with unknown viscosity and fill level.

    DOI: 10.1109/ROBIO49542.2019.8961718

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  35. Quantitative spectrochemical analysis of solution plasma in aromatic molecules

    Bratescu Maria Antoaneta, Kim Kyusung, Saito Nagahiro

    PLASMA PROCESSES AND POLYMERS   16 巻 ( 7 )   2019年7月

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    担当区分:最終著者, 責任著者   掲載種別:研究論文(学術雑誌)   出版者・発行元:Plasma Processes and Polymers  

    DOI: 10.1002/ppap.201900012

    Web of Science

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  36. Synthesis of aryl and heteroaryl tetrafluoro-λ<sup>6</sup>-sulfanyl chlorides from diaryl disulfides using trichloroisocyanuric acid and potassium fluoride

    Saidalimu I., Liang Y., Niina K., Tanagawa K., Saito N., Shibata N.

    Organic Chemistry Frontiers   6 巻 ( 8 ) 頁: 1157 - 1161   2019年4月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Organic Chemistry Frontiers  

    We present a catalyst-free method for the synthesis of aryl and heteroaryl tetrafluoro-λ6-sulfanyl chlorides (Ar-SF4Cl) by using trichloroisocyanuric acid and potassium fluoride in acetonitrile. The method has wide substrate generality and proceeded well with high yields even in the absence of acid catalysts. The preparation of meta- and para-SF4Cl-substituted pyridines using TCCA was achieved for the first time.

    DOI: 10.1039/c9qo00191c

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  37. P-Type Doping of Graphene with Cationic Nitrogen

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

    ACS Applied Nano Materials   2 巻 ( 3 ) 頁: 1350 - 1355   2019年3月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ACS Applied Nano Materials  

    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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  38. Solution plasma reactions and materials synthesis

    Panomsuwan G.

    Molecular Technology: Materials Innovation     頁: 137 - 172   2019年2月

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:Molecular Technology: Materials Innovation  

    DOI: 10.1002/9783527823987.vol3_c7

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  39. 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   205 巻   頁: 472 - 479   2019年2月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Carbohydrate Polymers  

    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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  40. Tool-Use Model Considering Tool Selection by a Robot Using Deep Learning

    Saito N., Kim K., Murata S., Ogata T., Sugano S.

    IEEE-RAS International Conference on Humanoid Robots   2018-November 巻   頁: 814 - 819   2019年1月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:IEEE-RAS International Conference on Humanoid Robots  

    We propose a tool-use model that can select tools that require neither labeling nor modeling of the environment and actions. With this model, a robot can choose a tool by itself and perform the operation that matches a human command and the environmental situation. To realize this, we use deep learning to train sensory motor data recorded during tool selection and tool use as experienced by a robot. The experience includes two types of selection, namely according to function and according to size, thereby allowing the robot to handle both situations. For evaluation, the robot is required to generate motion either in an untrained situation or using an untrained tool. We confirm that the robot can choose and use a tool that is suitable for achieving the target task.

    DOI: 10.1109/HUMANOIDS.2018.8625048

    Scopus

  41. Randomized controlled trial of Web-based weight-loss intervention with human support for male workers under 40

    Ozaki I., Watai I., Nishijima M., Saito N.

    Journal of Occupational Health   61 巻 ( 1 ) 頁: 110 - 120   2019年1月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Journal of Occupational Health  

    Objectives: Human support can boost weight reduction in Internet-based weight-loss intervention. However, the most effective way to combine human support and the Internet for weight loss is unclear. This study aimed to examine the effects of two weight-loss programs for male workers aged 18-39 that combined different intensities of human support with website support compared to a delayed-intervention group (control group; CG), in a randomized controlled trial. Methods: Seventy-one participants with overweight or obesity were allocated to one of three 12-week treatment programs. The Standard Support Group (SSG) was provided support via website and two face-to-face group guidance sessions, at the beginning and at the end of the program along with monthly general emails throughout the program. The Enhanced Support Group (ESG) received four remote support sessions based on Supportive Accountability (SA) in addition to the SSG. The CG was provided the same program as SSG after the other two groups had completed the program. The primary outcome was body weight reduction. Results: ESG participants reduced their weight significantly more than SSG and CG participants (P = 0.038, P < 0.001, respectively), and SSG participants reduced their weight significantly more than CG participants (P = 0.033). Conclusions: The additional remote human support provided to the participants in the ESG was beneficial for weight loss in male workers. The low-intensity program provided to the SSG was also effective. Further studies with more participants in diverse settings and with participants who are less interested in their health and weight management are needed.

    DOI: 10.1002/1348-9585.12037

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

    Prasertsung I.

    Water Science and Technology   79 巻 ( 5 ) 頁: 967 - 974   2019年

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:Water Science and Technology  

    DOI: 10.2166/wst.2019.035

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  43. Maximization of sodium storage capacity of pure carbon material used in sodium-ion batteries 国際共著

    Kang J.

    Journal of Materials Chemistry A   7 巻 ( 27 ) 頁: 16149 - 16160   2019年

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:Journal of Materials Chemistry A  

    DOI: 10.1039/c9ta01751h

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  44. Solution Plasma-Assisted Green Synthesis of MnO2 Adsorbent and Removal of Cationic Pollutant

    Kim Hye-min, Saito Nagahiro, Kim Dae-wook

    JOURNAL OF CHEMISTRY   2019 巻   2019年

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:Journal of Chemistry  

    DOI: 10.1155/2019/7494292

    Web of Science

    Scopus

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

    Prasertsung I.

    Water Science and Technology   79 巻 ( 5 ) 頁: 967 - 974   2019年

     詳細を見る

    掲載種別:研究論文(学術雑誌)   出版者・発行元:Water Science and Technology  

    DOI: 10.2166/wst.2019.035

    Scopus

  46. Maximization of sodium storage capacity of pure carbon material used in sodium-ion batteries

    Kang J.

    Journal of Materials Chemistry A   7 巻 ( 27 ) 頁: 16149 - 16160   2019年

     詳細を見る

    掲載種別:研究論文(学術雑誌)   出版者・発行元:Journal of Materials Chemistry A  

    DOI: 10.1039/c9ta01751h

    Scopus

  47. 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   201 巻   頁: 20 - 30   2018年12月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Carbohydrate Polymers  

    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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  48. 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.

    Journal of Photochemistry and Photobiology A: Chemistry   367 巻   頁: 270 - 281   2018年12月

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:Journal of Photochemistry and Photobiology A: Chemistry  

    DOI: 10.1016/j.jphotochem.2018.08.030

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  49. 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.

    Journal of Photochemistry and Photobiology A: Chemistry   367 巻   頁: 270 - 281   2018年12月

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:Journal of Photochemistry and Photobiology A: Chemistry  

    DOI: 10.1016/j.jphotochem.2018.08.030

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  50. Patients Simulator for Transsphenoidal Surgery

    Masuda T., Kanako H., Adachi S., Arai F., Omata S., Morita A., Kin T., Saito N., Yamashita J., Chinzei K., Haswgawa A., Fukuda T.

    MHS 2018 - 2018 29th International Symposium on Micro-NanoMechatronics and Human Science     2018年12月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:MHS 2018 - 2018 29th International Symposium on Micro-NanoMechatronics and Human Science  

    We developed 'Bionic Brain' which was equipped with cranial base module to train for transsphenoidal surgery. In the transsphenoidal surgery training by using this Bionic Brain, the user can insert an endoscope and a curette into the nose and sphenoid sinus, and remove tumors from the pituitary gland. From pseud surgery by brain surgeon, we confirmed that the fabricated cranial base module was similar to the anatomical structure.

    DOI: 10.1109/MHS.2018.8886922

    Scopus

  51. 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   757 巻   頁: 188 - 199   2018年8月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Journal of Alloys and Compounds  

    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

    Web of Science

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  52. Thickness-Dependent Strain Evolution of Epitaxial SrTiO3 Thin Films Grown by Ion Beam Sputter Deposition

    Panomsuwan Gasidit, Saito Nagahiro

    CRYSTAL RESEARCH AND TECHNOLOGY   53 巻 ( 8 )   2018年8月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Crystal Research and Technology  

    DOI: 10.1002/crat.201700211

    Web of Science

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  53. Measurement of emission-angle anisotropy via long-range angular correlations with high- pT hadrons in d+Au and p+p collisions at s NN =200 GeV

    Adare A., Aidala C., Ajitanand N.N., Akiba Y., Al-Bataineh H., Alexander J., Alfred M., Angerami A., Aoki K., Apadula N., Aramaki Y., Atomssa E.T., Averbeck R., Awes T.C., Azmoun B., Babintsev V., Bagoly A., Bai M., Baksay G., Baksay L., Barish K.N., Bassalleck B., Basye A.T., Bathe S., Baublis V., Baumann C., Bazilevsky A., Belikov S., Belmont R., Bennett R., Berdnikov A., Berdnikov Y., Bhom J.H., Blau D.S., Boer M., Bok J.S., Boyle K., Brooks M.L., Bryslawskyj J., Buesching H., Bumazhnov V., Bunce G., Butsyk S., Campbell S., Canoa Roman V., Caringi A., Chen C.H., Chi C.Y., Chiu M., Choi I.J., Choi J.B., Choudhury R.K., Christiansen P., Chujo T., Chung P., Chvala O., Cianciolo V., Citron Z., Cole B.A., Conesa Del Valle Z., Connors M., Csanád M., Csörgo T., Dahms T., Dairaku S., Danchev I., Danley T.W., Das K., Datta A., Daugherity M.S., David G., Dayananda M.K., Deblasio K., Dehmelt K., Denisov A., Deshpande A., Desmond E.J., Dharmawardane K.V., Dietzsch O., Dion A., Do J.H., Donadelli M., D'Orazio L., Drapier O., Drees A., Drees K.A., Durham J.M., Durum A., Dutta D., Edwards S., Efremenko Y.V., Ellinghaus F., Engelmore T., Enokizono A., En'Yo H., Esumi S., Fadem B., Fan W., Feege N., Fields D.E.

    Physical Review C   98 巻 ( 1 )   2018年7月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Physical Review C  

    We present measurements of two-particle angular correlations between high-transverse-momentum (2<pT<11 GeV/c) π0 observed at midrapidity (|η|<0.35) and particles produced either at forward (3.1<η<3.9) or backward (-3.7<η<-3.1) rapidity in d+Au and p+p collisions at sNN=200 GeV. The azimuthal angle correlations for particle pairs with this large rapidity gap in the Au-going direction exhibit a characteristic structure that persists up to pT≈6 GeV/c and which strongly depends on collision centrality, which is a similar characteristic to the hydrodynamical particle flow in A+A collisions. The structure is absent in the d-going direction as well as in p+p collisions, in the transverse-momentum range studied. The results indicate that the structure is shifted in the Au-going direction toward more central collisions, similar to the charged-particle pseudorapidity distributions.

    DOI: 10.1103/PhysRevC.98.014912

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  54. Enhancing Bifunctional Catalytic Activity of Oxygen Reduction and Evolution Reaction via One-Pot Formation of MnO2-Carbon Hybrid Nanocomposite

    Kim Hye-min, Saito Nagahiro, Kim Dae-wook

    CHEMISTRYSELECT   3 巻 ( 23 ) 頁: 6302 - 6308   2018年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ChemistrySelect  

    DOI: 10.1002/slct.201800851

    Web of Science

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

    Tipplook Mongkol, Hashimi Kazuo, Bratescu Maria Antoaneta, Saito Nagahiro

    NANOSCIENCE AND NANOTECHNOLOGY LETTERS   10 巻 ( 5-6 ) 頁: 667-674   2018年5月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1166/nnl.2018.2719

    Web of Science

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

    Chae Sangwoo, Hashimi Kazuo, Bratescu Maria Antoaneta, Saito Nagahiro

    NANOSCIENCE AND NANOTECHNOLOGY LETTERS   10 巻 ( 5-6 ) 頁: 784-789   2018年5月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1166/nnl.2018.2716

    Web of Science

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

    Kim Kyusung, Hashimi Kazuo, Bratescu Maria Antoaneta, Saito Nagahiro

    NANOSCIENCE AND NANOTECHNOLOGY LETTERS   10 巻 ( 5-6 ) 頁: 814-819   2018年5月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1166/nnl.2018.2655

    Web of Science

  58. 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   8 巻 ( 4 )   2018年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Nanomaterials  

    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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  59. Synthesis of fluoro-functionalized diaryl-λ<sup>3</sup>-iodonium salts and their cytotoxicity against human lymphoma U937 cells

    Das P., Tokunaga E., Akiyama H., Doi H., Saito N., Shibata N.

    Beilstein Journal of Organic Chemistry   14 巻   頁: 364 - 372   2018年2月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Beilstein Journal of Organic Chemistry  

    Conscious of the potential bioactivity of fluorine, an investigation was conducted using various fluorine-containing diaryliodonium salts in order to study and compare their biological activity against human lymphoma U937 cells. Most of the compounds tested are well-known reagents for fluoro-functionalized arylation reactions in synthetic organic chemistry, but their biological properties are not fully understood. Herein, after initially investigating 18 fluoro-functionalized reagents, we discovered that the ortho-fluorofunctionalized diaryliodonium salt reagents showed remarkable cytotoxicity in vitro. These results led us to synthesize more compounds, previously unknown sterically demanding diaryliodonium salts having a pentafluorosulfanyl (SF5) functional group at the ortho-position, that is, unsymmetrical ortho-SF5 phenylaryl-λ3-iodonium salts. Newly synthesized mesityl(2-(pentafluoro-λ6-sulfanyl)phenyl)iodonium exhibited the greatest potency in vitro against U937 cells. Evaluation of the cytotoxicity of selected phenylaryl-λ3-iodonium salts against AGLCL (a normal human B cell line) was also examined.

    DOI: 10.3762/bjoc.14.24

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  60. 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   57 巻 ( 1 )   2018年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Japanese Journal of Applied Physics  

    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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  61. 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   57 巻 ( 1 )   2018年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Japanese Journal of Applied Physics  

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

    Saito Nagahiro, Bratescu Maria Antoaneta, Hashimi Kazuo

    JAPANESE JOURNAL OF APPLIED PHYSICS   57 巻 ( 1 )   2018年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Japanese Journal of Applied Physics  

    DOI: 10.7567/JJAP.57.0102A4

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

    Watthanaphanit Anyarat, Saito Nagahiro

    JAPANESE JOURNAL OF APPLIED PHYSICS   57 巻 ( 1 )   2018年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Japanese Journal of Applied Physics  

    DOI: 10.7567/JJAP.57.0102A3

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  64. Plasma in Solution and Its Applications

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

    Japanese Journal of Applied Physics   57 巻 ( 1 )   2018年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Japanese Journal of Applied Physics  

    DOI: 10.7567/JJAP.57.010201

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  65. 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   57 巻 ( 1 )   2018年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Japanese Journal of Applied Physics  

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

    Lee SeungHyo, Saito Nagahiro

    RSC ADVANCES   8 巻 ( 62 ) 頁: 35503 - 35511   2018年

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:RSC Advances  

    DOI: 10.1039/c8ra06614k

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  67. 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

    齋藤 永宏

    日本物理学会講演概要集   73.1 巻 ( 0 ) 頁: 1800 - 1801   2018年

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本物理学会  

    DOI: 10.11316/jpsgaiyo.73.1.0_1800

    CiNii Research

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

    Lee SeungHyo, Saito Nagahiro

    RSC ADVANCES   8 巻 ( 62 ) 頁: 35503 - 35511   2018年

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:RSC Advances  

    DOI: 10.1039/c8ra06614k

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  69. An eccentric rod-like linear connection of two heterocycles: Synthesis of pyridine: Trans -tetrafluoro-λ<sup>6</sup>-sulfanyl triazoles

    Das P., Niina K., Hiromura T., Tokunaga E., Saito N., Shibata N.

    Chemical Science   9 巻 ( 22 ) 頁: 4931 - 4936   2018年

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Chemical Science  

    The trans-tetrafluoro-λ6-sulfane (SF4) group has been utilized as a unique three-dimensional building block for the linear connection of two independent N-heterocycles, pyridines and triazoles. The linearly connected heterocyclic compounds were synthesized by thermal Huisgen 1,3-dipolar cycloaddition between previously unknown pyridine SF4-alkynes and readily available azides, providing a series of rod-like SF4-connected N-heterocycles in good to excellent yields. X-ray crystallographic analysis of the target products revealed the trans-geometry of the SF4 group, which linearly connects two independent N-heterocycles. This research will open the field of chemistry of SF4-connected heterocyclic compounds.

    DOI: 10.1039/c8sc01216d

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  70. Facile preparation of defective black TiO2 through the solution plasma process: Effect of parametric changes for plasma discharge on its structural and optical properties

    Jedsukontorn Trin, Ueno Tomonaga, Saito Nagahiro, Hunsom Mali

    JOURNAL OF ALLOYS AND COMPOUNDS   726 巻   頁: 567 - 577   2017年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Journal of Alloys and Compounds  

    DOI: 10.1016/j.jallcom.2017.08.028

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  71. 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., Nakata K., Ishida N., Kitamura N., Idemoto Y., Kondo T., Yuasa M., Takai O., Ueno T., Saito N., Fujishima A., Terashima C.

    ACS Omega   3 巻 ( 1 ) 頁: 898 - 905   2017年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ACS Omega  

    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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  72. PHENIX Collaboration

    Adare A., Afanasiev S., Aidala C., Ajitanand N.N., Akiba Y., Akimoto R., Al-Bataineh H., Alexander J., Alfred M., Al-Jamel A., Al-Ta'ani H., Andrews K.R., Andrieux V., Angerami A., Aoki K., Apadula N., Aphecetche L., Appelt E., Aramaki Y., Armendariz R., Aronson S.H., Asai J., Asano H., Aschenauer E.C., Atomssa E.T., Averbeck R., Awes T.C., Ayuso C., Azmoun B., Babintsev V., Bagoly A., Bai M., Bai X., Baksay G., Baksay L., Baldisseri A., Bandara N.S., Bannier B., Barish K.N., Barnes P.D., Bassalleck B., Basye A.T., Bathe S., Batsouli S., Baublis V., Bauer F., Baumann C., Baumgart S., Bazilevsky A., Beaumier M., Beckman S., Belikov S., Belmont R., Ben-Benjamin J., Bennett R., Berdnikov A., Berdnikov Y., Bhom J.H., Bickley A.A., Bjorndal M.T., Black D., Blau D.S., Boer M., Boissevain J.G., Bok J.S., Borel H., Boyle K., Brooks M.L., Brown D.S., Broxmeyer D., Bryslawskyj J., Bucher D., Buesching H., Bumazhnov V., Bunce G., Burward-Hoy J.M., Butler C., Butsyk S., Camacho C.M., Campbell S., Canoa Roman V., Caringi A., Castera P., Cervantes R., Chai J.S., Chang B.S., Chang W.C., Charvet J.L., Chen C.H., Chernichenko S., Chi C.Y., Chiba J., Chiu M., Choi I.J., Choi J.B., Choi S., Choudhury R.K., Christiansen P., Chujo T., Chung P.

    Nuclear Physics A   967 巻   頁: 996 - 1003   2017年11月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Nuclear Physics A  

    DOI: 10.1016/S0375-9474(17)30382-2

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

    Chae Sangwoo, Bratescu Maria Antoaneta, Saito Nagahiro

    JOURNAL OF PHYSICAL CHEMISTRY C   121 巻 ( 42 ) 頁: 23793 - 23802   2017年10月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Journal of Physical Chemistry C  

    DOI: 10.1021/acs.jpcc.7b08516

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

    Nemoto Shimpei, Ueno Tomonaga, Watthanaphanit Anyarat, Hieda Junko, Bratescu Maria Antoaneta, Saito Nagahiro

    JAPANESE JOURNAL OF APPLIED PHYSICS   56 巻 ( 9 )   2017年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Japanese Journal of Applied Physics  

    DOI: 10.7567/JJAP.56.096202

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  75. Measurements of e+e- pairs from open heavy flavor in p+p and d+A collisions at s NN =200 GeV

    Adare A., Afanasiev S., Aidala C., Ajitanand N.N., Akiba Y., Al-Bataineh H., Alexander J., Alfred M., Aoki K., Apadula N., Aphecetche L., Asai J., Atomssa E.T., Averbeck R., Awes T.C., Ayuso C., Azmoun B., Babintsev V., Bagoly A., Bai M., Baksay G., Baksay L., Baldisseri A., Barish K.N., Barnes P.D., Bassalleck B., Basye A.T., Bathe S., Batsouli S., Baublis V., Baumann C., Bazilevsky A., Belikov S., Belmont R., Bennett R., Berdnikov A., Berdnikov Y., Bickley A.A., Blau D.S., Boer M., Boissevain J.G., Bok J.S., Borel H., Boyle K., Brooks M.L., Bryslawskyj J., Buesching H., Bumazhnov V., Bunce G., Butler C., Butsyk S., Camacho C.M., Campbell S., Canoa Roman V., Chang B.S., Chang W.C., Charvet J.L., Chernichenko S., Chi C.Y., Chiu M., Choi I.J., Choudhury R.K., Chujo T., Chung P., Churyn A., Cianciolo V., Citron Z., Cole B.A., Connors M., Constantin P., Csanád M., Csörgo T., Dahms T., Dairaku S., Danley T.W., Das K., David G., Deblasio K., Dehmelt K., Denisov A., D'Enterria D., Deshpande A., Desmond E.J., Dietzsch O., Dion A., Do J.H., Donadelli M., Drapier O., Drees A., Drees K.A., Dubey A.K., Dumancic M., Durham J.M., Durum A., Dutta D., Dzhordzhadze V., Efremenko Y.V., Elder T., Ellinghaus F., Engelmore T.

    Physical Review C   96 巻 ( 2 )   2017年8月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Physical Review C  

    We report a measurement of e+e- pairs from semileptonic heavy-flavor decays in p+p collisions at sNN=200 GeV. The e+e- pair yield from bb and cc is separated by exploiting a double differential fit done simultaneously in dielectron invariant mass and pT. We used three different event generators, pythia, mc@nlo, and powheg, to simulate the e+e- spectra from cc and bb production. The data can be well described by all three generators within the detector acceptance. However, when using the generators to extrapolate to 4π, significant differences are observed for the total cross section. These difference are less pronounced for bb than for cc. The same model dependence was observed in already published d+A data. The p+p data are also directly compared with d+A data in mass and pT, and within the statistical accuracy no nuclear modification is seen.

    DOI: 10.1103/PhysRevC.96.024907

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  76. 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   14 巻 ( 8 )   2017年8月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Plasma Processes and Polymers  

    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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  77. Simple Solution Plasma Synthesis of Hierarchical Nanoporous MnO2 for Organic Dye Removal

    Kim Hyemin, Watthanaphanit Anyarat, Saito Nagahiro

    ACS SUSTAINABLE CHEMISTRY & ENGINEERING   5 巻 ( 7 ) 頁: 5842 - 5851   2017年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ACS Sustainable Chemistry and Engineering  

    DOI: 10.1021/acssuschemeng.7b00560

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

    Hyun Koangyong, Saito Nagahiro

    SCIENTIFIC REPORTS   7 巻 ( 1 )   2017年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Scientific Reports  

    DOI: 10.1038/s41598-017-04190-x

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  79. Sodium temperature/wind lidar based on laser-diode-pumped Nd:YAG lasers deployed at Tromsø, Norway (69.6°N, 19.2°E)

    Kawahara T.D., Nozawa S., Saito N., Kawabata T., Tsuda T.T., Wada S.

    Optics Express   25 巻 ( 12 ) 頁: A491 - A501   2017年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Optics Express  

    An Nd:YAG laser-based sodium temperature/wind lidar was developed for the measurement of the northern polar mesosphere and lower thermosphere at Tromsø (69.6N, 19.2E), Norway. Coherent light at 589 nm is produced by sum frequency generation of 1064 nm and 1319 nm from two diode laser end-pumped pulsed Nd:YAG lasers. The output power is as high as 4W, with 4 mJ/pulse at 1000 Hz repetition rate. Five tilting Cassegrain telescopes enable us to make five-direction (zenith, north, south, east, west) observation for temperature and wind simultaneously. This highly stable laser system is first of its kind to operate virtually maintenance-free during the observation season (from late September to March) since 2010.

    DOI: 10.1364/OE.25.00A491

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  80. 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   19 巻 ( 23 ) 頁: 15264 - 15272   2017年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Physical Chemistry Chemical Physics  

    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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  81. Photocatalytic behavior of metal-decorated TiO2 and their catalytic activity for transformation of glycerol to value added compounds

    Jedsukontorn Trin, Saito Nagahiro, Hunsom Mali

    MOLECULAR CATALYSIS   432 巻   頁: 160 - 171   2017年5月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Molecular Catalysis  

    DOI: 10.1016/j.mcat.2017.02.022

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  82. Macrophage ubiquitin-specific protease 2 modifies insulin sensitivity in obese mice

    Saito N., Kimura S., Miyamoto T., Fukushima S., Amagasa M., Shimamoto Y., Nishioka C., Okamoto S., Toda C., Washio K., Asano A., Miyoshi I., Takahashi E., Kitamura H.

    Biochemistry and Biophysics Reports   9 巻   頁: 322 - 329   2017年3月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Biochemistry and Biophysics Reports  

    We previously reported that ubiquitin-specific protease (USP) 2 in macrophages down-regulates genes associated with metabolic diseases, suggesting a putative anti-diabetic role for USP2 in macrophages. In this study, we evaluate this role at both cellular and individual levels. Isolated macrophages forcibly expressing Usp2a, a longer splicing variant of USP2, failed to modulate the insulin sensitivity of 3T3-L1 adipocytes. Similarly, macrophage-selective overexpression of Usp2a in mice (Usp2a transgenic mice) had a negligible effect on insulin sensitivity relative to wild type littermates following a three-month high-fat diet. However, Usp2a transgenic mice exhibited fewer M1 macrophages in their mesenteric adipose tissue. Following a six-month high-fat diet, Usp2a transgenic mice exhibited a retarded progression of insulin resistance in their skeletal muscle and liver, and an improvement in insulin sensitivity at an individual level. Although conditioned media from Usp2a-overexpressing macrophages did not directly affect the insulin sensitivity of C2C12 myotubes compared to media from control macrophages, they did increase the insulin sensitivity of C2C12 cells after subsequent conditioning with 3T3-L1 cells. These results indicate that macrophage USP2A hampers obesity-elicited insulin resistance via an adipocyte-dependent mechanism.

    DOI: 10.1016/j.bbrep.2017.01.009

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  83. Xeroderma pigmentosum group C protein interacts with histones: regulation by acetylated states of histone H3

    Kakumu E., Nakanishi S., Shiratori H.M., Kato A., Kobayashi W., Machida S., Yasuda T., Adachi N., Saito N., Ikura T., Kurumizaka H., Kimura H., Yokoi M., Sakai W., Sugasawa K.

    Genes to Cells   22 巻 ( 3 ) 頁: 310 - 327   2017年3月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Genes to Cells  

    In the mammalian global genome nucleotide excision repair pathway, two damage recognition factors, XPC and UV-DDB, play pivotal roles in the initiation of the repair reaction. However, the molecular mechanisms underlying regulation of the lesion recognition process in the context of chromatin structures remain to be understood. Here, we show evidence that damage recognition factors tend to associate with chromatin regions devoid of certain types of acetylated histones. Treatment of cells with histone deacetylase inhibitors retarded recruitment of XPC to sites of UV-induced DNA damage and the subsequent repair process. Biochemical studies showed novel multifaceted interactions of XPC with histone H3, which were profoundly impaired by deletion of the N-terminal tail of histone H3. In addition, histone H1 also interacted with XPC. Importantly, acetylation of histone H3 markedly attenuated the interaction with XPC in vitro, and local UV irradiation of cells decreased the level of H3K27ac in the damaged areas. Our results suggest that histone deacetylation plays a significant role in the process of DNA damage recognition for nucleotide excision repair and that the localization and functions of XPC can be regulated by acetylated states of histones.

    DOI: 10.1111/gtc.12479

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  84. Conversion of cellulose into reducing sugar by solution plasma process (SPP) 査読有り

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

    Carbohydrate Polymers   172 巻   頁: 230-236   2017年

     詳細を見る

    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1016/j.carbpol.2017.05.025

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

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

    Electrochimica Acta   233 巻   頁: 123-133   2017年

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    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1016/j.electacta.2017.03.049

  86. Solution plasma synthesis of Pt/ZnO/KB for photo-assisted electro-oxidation of methanol 査読有り

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

    Journal of Alloys and Compounds   692 巻   頁: 848-854   2017年

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    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1016/j.jallcom.2016.09.032

  87. Novel synthesis of PtPd nanoparticles with good electrocatalytic activity and durability 査読有り

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

    Journal of Alloys and Compounds   709 巻   頁: 588-595   2017年

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    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1016/j.jallcom.2017.03.202

  88. Enhanced ferromagnetism in graphite-like carbon layer-coated ZnO crystals 査読有り

    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   695 巻   頁: 233-237   2017年

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    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1016/j.jallcom.2016.10.200

  89. Crystallinity and surface state of cellulose in wet ball-milling process 査読有り

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

    Journal of Applied Polymer Science   134 巻 ( 22 ) 頁: -   2017年

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    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1002/app.44903

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

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

    Energy Procedia   138 巻   頁: 1153 - 1158   2017年

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)   出版者・発行元:Energy Procedia  

    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

    Web of Science

    Scopus

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

    Seangarunthong N.

    Key Engineering Materials   751 KEM 巻   頁: 773 - 778   2017年

     詳細を見る

    掲載種別:研究論文(学術雑誌)   出版者・発行元:Key Engineering Materials  

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

    Scopus

  92. ソリューションプラズマを用いた新材料創成

    稗田 純子, 上野 智永, 齋藤 永宏

    表面科学学術講演会要旨集   37 巻 ( 0 )   2017年

     詳細を見る

    掲載種別:研究論文(学術雑誌)   出版者・発行元:公益社団法人 日本表面科学会  

    ソリューションプラズマを用いた金属ナノ粒子や燃料電池用カーボン触媒の合成について紹介する

    DOI: 10.14886/sssj2008.37.0_27

  93. 逆ミセル構造を利用するソリューションプラズマ合成ナノカーボンの比表面積制御

    森下 哲典, 上野 智永, 吉田 彰仁, 稗田 純子, 齋藤 永宏

    表面技術   68 巻 ( 3 ) 頁: 153 - 157   2017年

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 表面技術協会  

    <p>Nanocarbons were synthesized from benzene - water - sodium dodecyl sulfate(SDS)and benzene-(water-ethanol)-SDS systems using solution plasma. The stabilized emulsion formed in the benzene-water-SDS and benzene-(water-ethanol)-SDS. The specific surface areas of nanocarbons synthesized from benzene-water-SDS increased with the increase of the SDS concentration, although their variation was not great. By contrast, the surface areas of nanocarbons synthesized from benzene-(water-ethanol)-SDS were altered considerably compared to the variation in benzene-(water-ethanol)-SDS system. The maximum specific surface area was 387 m<sup>2</sup>/g. The minimum averaged pore size was 13.5 nm when the ratio of ethanol to water was 0.5. That fact suggests that the emulsion size of 50-100 nm influences the meso-structures of the obtained carbon in solution plasma processes.</p>

    DOI: 10.4139/sfj.68.153

  94. ソリューションプラズマを用いて作製した酸化亜鉛ナノ粒子の粒径に及ぼすプラズマ生成パラメータの影響

    根本 心平, 上野 智永, Anyarat WATTHANAPHANIT, 稗田 純子, 齋藤 永宏

    表面技術   68 巻 ( 3 ) 頁: 147 - 152   2017年

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 表面技術協会  

    <p>The optical and electronic performance of zinc oxide nanoparticles, which are widely used as optical and electronic materials, depends on the nanoparticle properties. The particle size is a particularly important factor affecting material properties. This study was conducted to elucidate the relation between the size of nanoparticles synthesized by solution plasma and each of several plasma formation parameters such as applied voltage, pulse width, and repetition frequency. The zinc electrodes were used to generate solution plasma. The zinc oxide nanoparticles were synthesized in solution plasma using a sputtering process. The synthesized nanoparticle shape was non-spherical. The nanoparticles were smaller than 100 nm along the long axis. Electrode sputtering occurred mainly on the cathode electrode. Therefore, positive ions in the solution plasma, e.g. H<sub>2</sub>O<sup>+</sup> and H<sub>3</sub>O<sup>+</sup>, affect the zinc oxide nanoparticle formation. However, the particle size was correlated with the applied voltage between electrodes, not with the pulse width or pulse repetition frequency.</p>

    DOI: 10.4139/sfj.68.147

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

    Seangarunthong N.

    Key Engineering Materials   751 KEM 巻   頁: 773 - 778   2017年

     詳細を見る

    掲載種別:研究論文(学術雑誌)   出版者・発行元:Key Engineering Materials  

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

    Scopus

  96. 逆ミセル構造を利用するソリューションプラズマ合成ナノカーボンの比表面積制御

    森下 哲典, 上野 智永, 吉田 彰仁, 稗田 純子, 齋藤 永宏

    表面技術   68 巻 ( 3 ) 頁: 153 - 157   2017年

     詳細を見る

    掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 表面技術協会  

    <p>Nanocarbons were synthesized from benzene - water - sodium dodecyl sulfate(SDS)and benzene-(water-ethanol)-SDS systems using solution plasma. The stabilized emulsion formed in the benzene-water-SDS and benzene-(water-ethanol)-SDS. The specific surface areas of nanocarbons synthesized from benzene-water-SDS increased with the increase of the SDS concentration, although their variation was not great. By contrast, the surface areas of nanocarbons synthesized from benzene-(water-ethanol)-SDS were altered considerably compared to the variation in benzene-(water-ethanol)-SDS system. The maximum specific surface area was 387 m<sup>2</sup>/g. The minimum averaged pore size was 13.5 nm when the ratio of ethanol to water was 0.5. That fact suggests that the emulsion size of 50-100 nm influences the meso-structures of the obtained carbon in solution plasma processes.</p>

    DOI: 10.4139/sfj.68.153

  97. ソリューションプラズマを用いて作製した酸化亜鉛ナノ粒子の粒径に及ぼすプラズマ生成パラメータの影響

    根本 心平, 上野 智永, Anyarat WATTHANAPHANIT, 稗田 純子, 齋藤 永宏

    表面技術   68 巻 ( 3 ) 頁: 147 - 152   2017年

     詳細を見る

    掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 表面技術協会  

    <p>The optical and electronic performance of zinc oxide nanoparticles, which are widely used as optical and electronic materials, depends on the nanoparticle properties. The particle size is a particularly important factor affecting material properties. This study was conducted to elucidate the relation between the size of nanoparticles synthesized by solution plasma and each of several plasma formation parameters such as applied voltage, pulse width, and repetition frequency. The zinc electrodes were used to generate solution plasma. The zinc oxide nanoparticles were synthesized in solution plasma using a sputtering process. The synthesized nanoparticle shape was non-spherical. The nanoparticles were smaller than 100 nm along the long axis. Electrode sputtering occurred mainly on the cathode electrode. Therefore, positive ions in the solution plasma, e.g. H<sub>2</sub>O<sup>+</sup> and H<sub>3</sub>O<sup>+</sup>, affect the zinc oxide nanoparticle formation. However, the particle size was correlated with the applied voltage between electrodes, not with the pulse width or pulse repetition frequency.</p>

    DOI: 10.4139/sfj.68.147

  98. ソリューションプラズマを用いた新材料創成

    稗田 純子, 上野 智永, 齋藤 永宏

    表面科学学術講演会要旨集   37 巻 ( 0 )   2017年

     詳細を見る

    掲載種別:研究論文(学術雑誌)   出版者・発行元:公益社団法人 日本表面科学会  

    ソリューションプラズマを用いた金属ナノ粒子や燃料電池用カーボン触媒の合成について紹介する

    DOI: 10.14886/sssj2008.37.0_27

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

    Kang J.

    Scientific Reports   6 巻   2016年12月

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:Scientific Reports  

    DOI: 10.1038/srep38652

    Scopus

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

    Kang J.

    Scientific Reports   6 巻   2016年12月

     詳細を見る

    掲載種別:研究論文(学術雑誌)   出版者・発行元:Scientific Reports  

    DOI: 10.1038/srep38652

    Scopus

  101. PHENIX Collaboration

    Adare A., Afanasiev S., Aidala C., Ajitanand N.N., Akiba Y., Akimoto R., Al-Bataineh H., Alexander J., Alfred M., Al-Jamel A., Al-Ta'ani H., Andrews K.R., Andrieux V., Angerami A., Aoki K., Apadula N., Aphecetche L., Appelt E., Aramaki Y., Armendariz R., Aronson S.H., Asai J., Asano H., Aschenauer E.C., Atomssa E.T., Averbeck R., Awes T.C., Azmoun B., Babintsev V., Bai M., Bai X., Baksay G., Baksay L., Baldisseri A., Bandara N.S., Bannier B., Barish K.N., Barnes P.D., Bassalleck B., Basye A.T., Bathe S., Batsouli S., Baublis V., Bauer F., Baumann C., Baumgart S., Bazilevsky A., Beaumier M., Beckman S., Belikov S., Belmont R., Ben-Benjamin J., Bennett R., Berdnikov A., Berdnikov Y., Bhom J.H., Bickley A.A., Bjorndal M.T., Black D., Blau D.S., Boissevain J.G., Bok J.S., Borel H., Boyle K., Brooks M.L., Brown D.S., Broxmeyer D., Bryslawskyj J., Bucher D., Buesching H., Bumazhnov V., Bunce G., Burward-Hoy J.M., Butsyk S., Camacho C.M., Campbell S., Caringi A., Castera P., Cervantes R., Chai J.S., Chang B.S., Chang W.C., Charvet J.L., Chen C.H., Chernichenko S., Chi C.Y., Chiba J., Chiu M., Choi I.J., Choi J.B., Choi S., Choudhury R.K., Christiansen P., Chujo T., Chung P., Churyn A., Chvala O., Cianciolo V., Citron Z., Cleven C.R.

    Nuclear Physics A   956 巻   頁: 964 - 970   2016年12月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Nuclear Physics A  

    DOI: 10.1016/S0375-9474(16)30234-2

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  102. 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   6 巻   2016年11月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Scientific Reports  

    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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  103. 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   37 巻 ( 11 ) 頁: 1975 - 1981   2016年11月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Cuihua Xuebao/Chinese Journal of Catalysis  

    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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  104. Female-biased sex difference in vasotocin-immunoreactive neural structures in the developing quail brain

    Aste Nicoletta, Yoshioka Naoki, Sakamoto Emiko, Saito Noboru

    JOURNAL OF CHEMICAL NEUROANATOMY   77 巻   頁: 41 - 54   2016年11月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Journal of Chemical Neuroanatomy  

    The bed nucleus of the stria terminalis pars medialis (BSTM), medial preoptic nucleus (POM), and lateral septal region (LS) exhibit more vasotocin-immunoreactive (VT-ir) neural structures in male than in female adult quail. VT-ir cells and fibers in these regions are sensitive to gonadal steroids only in males. The insensitivity of adult female VT-ir neural structures to sex steroids is attributed to estradiol exposure during a critical period in embryonic life.Although the VT-ir system has been intensively examined in adult quail, information is limited in embryos and juveniles. Therefore, we herein investigated the development of VT-immunoreactive neural structures from embryonic day (E) 9 to adulthood with a particular focus on the BSTM, POM and LS of both sexes.VT-ir neural structures were more evident in female than in male embryos from E9 (BSTM and POM) and E11 (LS). This sex difference disappeared between E15 and post-hatch day 1 in the BSTM and POM, and during the first week of life in the LS. Male-biased sex differences in VT-ir structures appeared at puberty. Female-biased sexual dimorphism in the density of the VT-ir structures of BSTM was reflected by the stronger expression of VT mRNA in females than in males. However, the density of VT mRNA somata was comparable in the two sexes.The exposure of male embryos to estradiol resulted in the feminization of VT-ir neural structures in the BSTM, but not in the POM or LS at E11.Collectively, these results suggest that sex differences in VT-ir neural structures changes drastically throughout quail life. In embryos, endogenous estradiol may stimulate the expression of VT in females, resulting in a robust sex difference in VT-ir cells and fibers in favor of this sex.

    DOI: 10.1016/j.jchemneu.2016.05.002

    Web of Science

    Scopus

  105. Self-Other Distinction Enhanced Empathic Responses in Individuals with Alexithymia

    Saito N., Yokoyama T., Ohira H.

    Scientific Reports   6 巻   2016年10月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Scientific Reports  

    Although empathy is important for social interactions, individuals with alexithymia have low empathic ability, particularly where advanced empathy is concerned (empathic concern, perspective taking). It has been argued that awareness of the self-other distinction enhances advanced empathy, and alexithymics are thought to inadequately distinguish the self from others. We therefore tested whether the self-other distinction increases advanced empathy in alexithymics. To this end, we presented painful hand images over participants' own hands, and required participants to estimate felt pain intensity and their affective states. Half of the participants got specific instructions to distinct themselves from the other in the images. Felt pain intensity (perspective taking) and other-oriented affective responses (empathic concern) were increased by the instructions only when participants had high alexithymia scores as measured by questionnaire, although self-oriented affective responses (personal distress) were not affected by the instructions. These findings indicate that enhancing the self-other distinction enhances alexithymics' ability to use advanced empathy, but not the primitive empathy.

    DOI: 10.1038/srep35059

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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   49 巻 ( 41 )   2016年9月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Journal of Physics D: Applied Physics  

    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

    Scopus

  107. Use of distributed sensor networks with optical fibers (brillouin scattering) for SHM of composite structures

    Saito N.

    Structural Health Monitoring Technologies and Next-Generation Smart Composite Structures     頁: 27 - 60   2016年9月

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:Structural Health Monitoring Technologies and Next-Generation Smart Composite Structures  

    DOI: 10.4324/9781315373492

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  108. Fabrication of bacterial cellulose-ZnO composite via solution plasma process for antibacterial applications 査読有り

    Janpetch N., Saito N., Rujiravanit R.

    Carbohydrate Polymers   148 巻   頁: 335 - 344   2016年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Carbohydrate Polymers  

    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

    Web of Science

    Scopus

  109. Single-neuron and genetic correlates of autistic behavior in macaque

    Yoshida K., Go Y., Kushima I., Toyoda A., Fujiyama A., Imai H., Saito N., Iriki A., Ozaki N., Isoda M.

    Science Advances   2 巻 ( 9 )   2016年9月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Science Advances  

    Atypical neurodevelopment in autism spectrum disorder is a mystery, defying explanation despite increasing attention. We report on a Japanese macaque that spontaneously exhibited autistic traits, namely, impaired social ability as well as restricted and repetitive behaviors, along with our single-neuron and genomic analyses. Its social ability was measured in a turn-taking task, where two monkeys monitor each other’s actions for adaptive behavioral planning. In its brain, the medial frontal neurons responding to others’ actions, abundant in the controls, were almost nonexistent. In its genes, whole-exome sequencing and copy number variation analyses identified rare coding variants linked to human neuropsychiatric disorders in 5-hydroxytryptamine (serotonin) receptor 2C (HTR2C) and adenosine triphosphate (ATP)–binding cassette subfamily A13 (ABCA13). This combination of systems neuroscience and cognitive genomics in macaques suggests a new, phenotype-to-genotype approach to studying mental disorders.

    DOI: 10.1126/sciadv.1600558

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  110. Measurement of the higher-order anisotropic flow coefficients for identified hadrons in Au + Au collisions at sNN =200 GeV

    Adare A., Afanasiev S., Aidala C., Ajitanand N.N., Akiba Y., Al-Bataineh H., Alexander J., Aoki K., Aramaki Y., Atomssa E.T., Averbeck R., Awes T.C., Azmoun B., Babintsev V., Bai M., Baksay G., Baksay L., Barish K.N., Bassalleck B., Basye A.T., Bathe S., Baublis V., Baumann C., Bazilevsky A., Belikov S., Belmont R., Bennett R., Berdnikov A., Berdnikov Y., Bickley A.A., Bok J.S., Boyle K., Brooks M.L., Buesching H., Bumazhnov V., Bunce G., Butsyk S., Camacho C.M., Campbell S., Chen C.H., Chi C.Y., Chiu M., Choi I.J., Choudhury R.K., Christiansen P., Chujo T., Chung P., Chvala O., Cianciolo V., Citron Z., Cole B.A., Connors M., Constantin P., Csanád M., Csörgo T., Dahms T., Dairaku S., Danchev I., Das K., Datta A., David G., Denisov A., Deshpande A., Desmond E.J., Dietzsch O., Dion A., Donadelli M., Drapier O., Drees A., Drees K.A., Durham J.M., Durum A., Dutta D., Edwards S., Efremenko Y.V., Ellinghaus F., Engelmore T., Enokizono A., En'Yo H., Esumi S., Fadem B., Fields D.E., Finger M., Finger M., Fleuret F., Fokin S.L., Fraenkel Z., Frantz J.E., Franz A., Frawley A.D., Fujiwara K., Fukao Y., Fusayasu T., Garishvili I., Glenn A., Gong H., Gonin M., Goto Y., Granier De Cassagnac R., Grau N.

    Physical Review C   93 巻 ( 5 )   2016年5月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Physical Review C  

    Measurements of the anisotropic flow coefficients v2{Ψ2},v3{Ψ3},v4{Ψ4}, and v4{Ψ2} for identified particles (π±,K±, and p+p) at midrapidity, obtained relative to the event planes Ψm at forward rapidities in Au + Au collisions at sNN=200GeV, are presented as a function of collision centrality and particle transverse momenta pT. The vn coefficients show characteristic patterns consistent with hydrodynamical expansion of the matter produced in the collisions. For each harmonic n, a modified valence quark-number Nq scaling [plotting vn{Ψm}/(Nq)n/2 versus transverse kinetic energies (KET)/Nq] is observed to yield a single curve for all the measured particle species for a broad range of KET. A simultaneous blast-wave model fit to the observed vn{Ψm}(pT) coefficients and published particle spectra identifies radial flow anisotropies ρn{Ψm} and spatial eccentricities sn{Ψm} at freeze-out. These are generally smaller than the initial-state participant-plane geometric eccentricities n{ΨmPP} as also observed in the final eccentricity from quantum interferometry measurements with respect to the event plane.

    DOI: 10.1103/PhysRevC.93.051902

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  111. High Efficiency DNA Extraction by Graphite Oxide/Cellulose/Magnetite Composites Under Na+ Free System 査読有り

    Akceoglu Garbis Atam, Li Oi Lun, Saito Nagahiro

    JOM   68 巻 ( 4 ) 頁: 1071 - 1077   2016年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:JOM  

    DOI: 10.1007/s11837-016-1826-0

    Web of Science

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  112. Heterocarbon nanosheets incorporating iron phthalocyanine for oxygen reduction reaction in both alkaline and acidic media 査読有り

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

    Physical Chemistry Chemical Physics   18 巻 ( 16 ) 頁: 10856 - 10863   2016年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Physical Chemistry Chemical Physics  

    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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  113. 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   10 巻 ( 1 ) 頁: 51 - 56   2016年3月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:International Journal of Plasma Environmental Science and Technology  

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

    Panomsuwan G., Saito N., Ishizaki T.

    Carbon   98 巻   頁: 411 - 420   2016年3月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Carbon  

    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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  115. Nitrogen-Doped Carbon Nanoparticle-Carbon Nanofiber Composite as an Efficient Metal-Free Cathode Catalyst for Oxygen Reduction Reaction 査読有り

    Panomsuwan G., Saito N., Ishizaki T.

    ACS Applied Materials and Interfaces   8 巻 ( 11 ) 頁: 6962 - 6971   2016年3月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ACS Applied Materials and Interfaces  

    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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  116. Scaling properties of fractional momentum loss of high- pT hadrons in nucleus-nucleus collisions at sNN from 62.4 GeV to 2.76 TeV

    Adare A., Afanasiev S., Aidala C., Ajitanand N.N., Akiba Y., Akimoto R., Al-Bataineh H., Alexander J., Alfred M., Al-Ta'Ani H., Angerami A., Aoki K., Apadula N., Aphecetche L., Aramaki Y., Armendariz R., Aronson S.H., Asai J., Asano H., Aschenauer E.C., Atomssa E.T., Averbeck R., Awes T.C., Azmoun B., Babintsev V., Bai M., Baksay G., Baksay L., Baldisseri A., Bandara N.S., Bannier B., Barish K.N., Barnes P.D., Bassalleck B., Basye A.T., Bathe S., Batsouli S., Baublis V., Baumann C., Baumgart S., Bazilevsky A., Beaumier M., Beckman S., Belikov S., Belmont R., Bennett R., Berdnikov A., Berdnikov Y., Bickley A.A., Blau D.S., Boissevain J.G., Bok J.S., Borel H., Boyle K., Brooks M.L., Bryslawskyj J., Buesching H., Bumazhnov V., Bunce G., Butsyk S., Camacho C.M., Campbell S., Castera P., Chang B.S., Charvet J.L., Chen C.H., Chernichenko S., Chi C.Y., Chiba J., Chiu M., Choi I.J., Choi J.B., Choi S., Choudhury R.K., Christiansen P., Chujo T., Chung P., Churyn A., Chvala O., Cianciolo V., Citron Z., Cleven C.R., Cole B.A., Comets M.P., Connors M., Constantin P., Csanád M., Csörgo T., Dahms T., Dairaku S., Danchev I., Danley T.W., Das K., Datta A., Daugherity M.S., David G., Deaton M.B., Deblasio K., Dehmelt K., Delagrange H.

    Physical Review C   93 巻 ( 2 )   2016年2月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Physical Review C  

    Measurements of the fractional momentum loss (Sloss≡δpT/pT) of high-transverse-momentum-identified hadrons in heavy-ion collisions are presented. Using π0 in Au+Au and Cu+Cu collisions at sNN=62.4 and 200 GeV measured by the PHENIX experiment at the Relativistic Heavy Ion Collider and and charged hadrons in Pb+Pb collisions measured by the ALICE experiment at the Large Hadron Collider, we studied the scaling properties of Sloss as a function of a number of variables: the number of participants, Npart, the number of quark participants, Nqp, the charged-particle density, dNch/dη, and the Bjorken energy density times the equilibration time, Bjτ0. We find that the pT, where Sloss has its maximum, varies both with centrality and collision energy. Above the maximum, Sloss tends to follow a power-law function with all four scaling variables. The data at sNN=200 GeV and 2.76 TeV, for sufficiently high particle densities, have a common scaling of Sloss with dNch/dη and Bjτ0, lending insight into the physics of parton energy loss.

    DOI: 10.1103/PhysRevC.93.024911

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  117. Transverse energy production and charged-particle multiplicity at midrapidity in various systems from sNN =7.7 to 200 GeV

    Adare A., Afanasiev S., Aidala C., Ajitanand N.N., Akiba Y., Akimoto R., Al-Bataineh H., Alexander J., Alfred M., Al-Jamel A., Al-Ta'Ani H., Angerami A., Aoki K., Apadula N., Aphecetche L., Aramaki Y., Armendariz R., Aronson S.H., Asai J., Asano H., Aschenauer E.C., Atomssa E.T., Averbeck R., Awes T.C., Azmoun B., Babintsev V., Bai M., Bai X., Baksay G., Baksay L., Baldisseri A., Bandara N.S., Bannier B., Barish K.N., Barnes P.D., Bassalleck B., Basye A.T., Bathe S., Batsouli S., Baublis V., Bauer F., Baumann C., Baumgart S., Bazilevsky A., Beaumier M., Beckman S., Belikov S., Belmont R., Bennett R., Berdnikov A., Berdnikov Y., Bhom J.H., Bickley A.A., Bjorndal M.T., Black D., Blau D.S., Boissevain J.G., Bok J.S., Borel H., Boyle K., Brooks M.L., Brown D.S., Bryslawskyj J., Bucher D., Buesching H., Bumazhnov V., Bunce G., Burward-Hoy J.M., Butsyk S., Campbell S., Caringi A., Castera P., Chai J.S., Chang B.S., Charvet J.L., Chen C.H., Chernichenko S., Chi C.Y., Chiba J., Chiu M., Choi I.J., Choi J.B., Choi S., Choudhury R.K., Christiansen P., Chujo T., Chung P., Churyn A., Chvala O., Cianciolo V., Citron Z., Cleven C.R., Cobigo Y., Cole B.A., Comets M.P., Conesa Del Valle Z., Connors M., Constantin P., Cronin N., Crossette N.

    Physical Review C   93 巻 ( 2 )   2016年2月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Physical Review C  

    Measurements of midrapidity charged-particle multiplicity distributions, dNch/dη, and midrapidity transverse-energy distributions, dET/dη, are presented for a variety of collision systems and energies. Included are distributions for Au+Au collisions at sNN=200, 130, 62.4, 39, 27, 19.6, 14.5, and 7.7 GeV, Cu+Cu collisions at sNN=200 and 62.4 GeV, Cu+Au collisions at sNN=200 GeV, U+U collisions at sNN=193 GeV, d+Au collisions at sNN=200 GeV, He3+Au collisions at sNN=200 GeV, and p+p collisions at sNN=200 GeV. Centrality-dependent distributions at midrapidity are presented in terms of the number of nucleon participants, Npart, and the number of constituent quark participants, Nqp. For all A+A collisions down to sNN=7.7 GeV, it is observed that the midrapidity data are better described by scaling with Nqp than scaling with Npart. Also presented are estimates of the Bjorken energy density, BJ, and the ratio of dET/dη to dNch/dη, the latter of which is seen to be constant as a function of centrality for all systems.

    DOI: 10.1103/PhysRevC.93.024901

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  118. Effect of treatment time in the Mg(OH)(2)/Mg-Al LDH composite film formed on Mg alloy AZ31 by steam coating on the corrosion resistance 査読有り

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

    SURFACE & COATINGS TECHNOLOGY   286 巻   頁: 172-177   2016年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1016/j.surfcoat.2015.11.051

  119. Measurement of higher cumulants of net-charge multiplicity distributions in Au + Au collisions at sNN =7.7-200 GeV

    Adare A., Afanasiev S., Aidala C., Ajitanand N.N., Akiba Y., Akimoto R., Al-Bataineh H., Alexander J., Al-Ta'Ani H., Angerami A., Aoki K., Apadula N., Aramaki Y., Asano H., Aschenauer E.C., Atomssa E.T., Averbeck R., Awes T.C., Azmoun B., Babintsev V., Bai M., Baksay G., Baksay L., Bannier B., Barish K.N., Bassalleck B., Basye A.T., Bathe S., Baublis V., Baumann C., Baumgart S., Bazilevsky A., Belikov S., Belmont R., Bennett R., Berdnikov A., Berdnikov Y., Bickley A.A., Black D., Blau D.S., Bok J.S., Boyle K., Brooks M.L., Bryslawskyj J., Buesching H., Bumazhnov V., Bunce G., Butsyk S., Camacho C.M., Campbell S., Castera P., Chen C.H., Chi C.Y., Chiu M., Choi I.J., Choi J.B., Choi S., Choudhury R.K., Christiansen P., Chujo T., Chung P., Chvala O., Cianciolo V., Citron Z., Cole B.A., Connors M., Constantin P., Cronin N., Crossette N., Csanád M., Csörgo T., Dahms T., Dairaku S., Danchev I., Das K., Datta A., Daugherity M.S., David G., Dehmelt K., Denisov A., Deshpande A., Desmond E.J., Dharmawardane K.V., Dietzsch O., Ding L., Dion A., Do J.H., Donadelli M., D'Orazio L., Drapier O., Drees A., Drees K.A., Durham J.M., Durum A., Dutta D., Edwards S., Efremenko Y.V., Ellinghaus F., Engelmore T., Enokizono A.

    Physical Review C   93 巻 ( 1 )   2016年1月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Physical Review C  

    We report the measurement of cumulants (Cn,n=1,⋯,4) of the net-charge distributions measured within pseudorapidity (|η|<0.35) in Au+Au collisions at sNN=7.7-200GeV with the PHENIX experiment at the Relativistic Heavy Ion Collider. The ratios of cumulants (e.g., C1/C2, C3/C1) of the net-charge distributions, which can be related to volume independent susceptibility ratios, are studied as a function of centrality and energy. These quantities are important to understand the quantum-chromodynamics phase diagram and possible existence of a critical end point. The measured values are very well described by expectation from negative binomial distributions. We do not observe any nonmonotonic behavior in the ratios of the cumulants as a function of collision energy. The measured values of C1/C2 and C3/C1 can be directly compared to lattice quantum-chromodynamics calculations and thus allow extraction of both the chemical freeze-out temperature and the baryon chemical potential at each center-of-mass energy. The extracted baryon chemical potentials are in excellent agreement with a thermal-statistical analysis model.

    DOI: 10.1103/PhysRevC.93.011901

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  120. ペンシル型水中プラズマ発生装置の開発と評価 (論文特集 2015年度静電気学会全国大会) 査読有り

    小山 啓輔, LI Oi Lun, 齋藤 永宏

    静電気学会誌   40 巻 ( 1 ) 頁: 26-31   2016年1月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)  

  121. Analysis of benzoquinone decomposition in solution plasma process 査読有り

    Bratescu M. A., Saito N.

    JOURNAL OF INSTRUMENTATION   11 巻 ( 1 ) 頁: -   2016年1月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Journal of Instrumentation  

    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

    Web of Science

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    その他リンク: http://orcid.org/0000-0001-8757-3933

  122. Adsorption of carbon dioxide by solution-plasma-synthesized heteroatom-doped carbon nanospheres 査読有り

    Thongwichit Nanthiya, Li Oi Lun Helena, Yaowarat Wattanachai, Saito Nagahiro, Suriyapraphadilok Uthaiporn

    JAPANESE JOURNAL OF APPLIED PHYSICS   55 巻 ( 1 )   2016年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.7567/JJAP.55.01AE10

    Web of Science

  123. Adsorption of carbon dioxide by solution-plasma-synthesized heteroatom-doped carbon nanospheres 査読有り

    Thongwichit, N; Li, OLH; Yaowarat, W; Saito, N; Suriyapraphadilok, U

    JAPANESE JOURNAL OF APPLIED PHYSICS   55 巻 ( 1 ) 頁: 01AE10   2016年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.7567/JJAP.55.01AE10

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

    Zhang J.

    Japanese Journal of Applied Physics   55 巻 ( 1 ) 頁: 01AE17   2016年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Japanese Journal of Applied Physics  

    DOI: 10.7567/JJAP.55.01AE17

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  125. Synthesis of nitrogen-containing carbon by solution plasma in aniline with high-repetition frequency discharges 査読有り

    Hyun K., Ueno T., Saito N.

    Japanese Journal of Applied Physics   55 巻 ( 1 ) 頁: 01AE18   2016年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Japanese Journal of Applied Physics  

    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

    Web of Science

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  126. Highly durable silica-coated Pt/carbon nanotubes for proton-exchange membrane fuel cells application 査読有り

    Yaowarat Wattanachai, Li Oi Lun Helena, Saito Nagahiro

    JAPANESE JOURNAL OF APPLIED PHYSICS   55 巻 ( 1 ) 頁: 01AE23   2016年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Japanese Journal of Applied Physics  

    DOI: 10.7567/JJAP.55.01AE23

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  127. ソリューションプラズマ反応場と材料合成

    簾 智仁, 上野 智永, 齋藤 永宏

    日本鑛業會誌   132 巻 ( 2 ) 頁: 47 - 52   2016年

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 資源・素材学会  

    Solution plasma is a non-equilibrium plasma in liquid phase. The reaction field of solution plasma is novel and useful for a wide variety of material science and engineering applications. Active species such as radicals, electrons and ions are generated in the plasma. These active species react with chemicals in liquid at the interface between plasma (gas) and liquid and cause unique chemical reactions owing to variation of liquids, electrodes, as well as operational conditions. Until now, solution plasma process has been applied into the following applications; (1) nanoparticle synthesis, (2) surface modification of nanocarbon, (3) rapid synthesis of nanochannel carbon materials, (4) nanoparticle supported on nanocarbon, and (5) heteroatom-containing carbon substances synthesized from monomers.

    DOI: 10.2473/journalofmmij.132.47

  128. Enhancement of conductivity in nano carbon balls by the addition of carbon tetrachloride: Via room temperature solution plasma process 査読有り

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

    RSC Advances   6 巻 ( 57 ) 頁: 51864 - 51870   2016年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:RSC Advances  

    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

    Web of Science

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  129. Synthesis of heteroatom-carbon nanosheets by solution plasma processing using: N -methyl-2-pyrrolidone as precursor 査読有り

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

    RSC Advances   6 巻 ( 9 ) 頁: 6990 - 6996   2016年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:RSC Advances  

    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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  130. Synthesis of colloidal MnO2 with a sheet-like structure by one-pot plasma discharge in permanganate aqueous solution 査読有り

    Kim Hyemin, Watthanaphanit Anyarat, Saito Nagahiro

    RSC ADVANCES   6 巻 ( 4 ) 頁: 2826 - 2834   2016年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:RSC Advances  

    DOI: 10.1039/c5ra20416j

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  131. A simple synthesis method for nanostructured Co-WC/carbon composites with enhanced oxygen reduction reaction activity 査読有り

    Kang, J, Kim, H, Saito, N, Lee, MH

    SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS   17 巻 ( 1 ) 頁: 37-44 - 44   2016年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Science and Technology of Advanced Materials  

    DOI: 10.1080/14686996.2016.1140305

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

    Morishita T.

    RSC Advances   6 巻 ( 100 ) 頁: 98091 - 98095   2016年

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:RSC Advances  

    DOI: 10.1039/c6ra19311k

    Scopus

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

    Panomsuwan G.

    RSC Advances   6 巻 ( 115 ) 頁: 114553 - 114559   2016年

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:RSC Advances  

    DOI: 10.1039/C6RA24214F

    Scopus

  134. ソリューションプラズマ-スパッタ法を用いた金ナノ粒子合成速度に与える溶媒組成の影響

    簾 智仁, 上野 智永, ワッタナパーニット アンヤラット, 齋藤 永宏

    表面技術   67 巻 ( 1 ) 頁: 46 - 50   2016年

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 表面技術協会  

    For this study, we applied a specific type of plasma in liquid phase named "solution plasma process(SPP)" for high-speed synthesis of gold nanoparticles(AuNPs)using an ethanol-water mixture as a liquid medium. Sputtering was conducted for the AuNP production. By applying high voltage across a pair of gold electrodes(∅=1.0 mm)immersed in the liquid medium, ions formed in the plasma collided with the gold electrode surface and caused sputtering of the gold atoms. Subsequently, these atoms formed AuNPs immediately before dispersal into the medium. We inferred that the medium properties greatly influenced the SPP system sputtering mechanism. Accordingly, the influence of the ethanol-water mixture composition on the formation mechanism was studied in addition to the yield of the synthesized AuNPs. Results indicate that composition of the ethanol-water mixtures strongly influenced the breakdown conditions for the plasma formation and that the largest current observed at the ethanol mole fraction was 0.089-0.14. It is particularly interesting that this composition of the ethanol-water mixture led to the highest AuNPs formation yield. Our findings suggest that high-speed synthesis of metal nanoparticles in the SPP system is achievable by altering the type and/or composition of the liquid medium.

    DOI: 10.4139/sfj.67.46

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

    Morishita T.

    RSC Advances   6 巻 ( 100 ) 頁: 98091 - 98095   2016年

     詳細を見る

    掲載種別:研究論文(学術雑誌)   出版者・発行元:RSC Advances  

    DOI: 10.1039/c6ra19311k

    Scopus

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

    Panomsuwan G.

    RSC Advances   6 巻 ( 115 ) 頁: 114553 - 114559   2016年

     詳細を見る

    掲載種別:研究論文(学術雑誌)   出版者・発行元:RSC Advances  

    DOI: 10.1039/C6RA24214F

    Scopus

  137. ソリューションプラズマ-スパッタ法を用いた金ナノ粒子合成速度に与える溶媒組成の影響

    簾 智仁, 上野 智永, ワッタナパーニット アンヤラット, 齋藤 永宏

    表面技術   67 巻 ( 1 ) 頁: 46 - 50   2016年

     詳細を見る

    掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 表面技術協会  

    For this study, we applied a specific type of plasma in liquid phase named "solution plasma process(SPP)" for high-speed synthesis of gold nanoparticles(AuNPs)using an ethanol-water mixture as a liquid medium. Sputtering was conducted for the AuNP production. By applying high voltage across a pair of gold electrodes(∅=1.0 mm)immersed in the liquid medium, ions formed in the plasma collided with the gold electrode surface and caused sputtering of the gold atoms. Subsequently, these atoms formed AuNPs immediately before dispersal into the medium. We inferred that the medium properties greatly influenced the SPP system sputtering mechanism. Accordingly, the influence of the ethanol-water mixture composition on the formation mechanism was studied in addition to the yield of the synthesized AuNPs. Results indicate that composition of the ethanol-water mixtures strongly influenced the breakdown conditions for the plasma formation and that the largest current observed at the ethanol mole fraction was 0.089-0.14. It is particularly interesting that this composition of the ethanol-water mixture led to the highest AuNPs formation yield. Our findings suggest that high-speed synthesis of metal nanoparticles in the SPP system is achievable by altering the type and/or composition of the liquid medium.

    DOI: 10.4139/sfj.67.46

  138. Enhancement of the Conductivity in Nanosized Carbon Ball by Introducing Chlorinated Benzene Derivatives via Room Temperature Solution Plasma Process

    Li OL, Hayashi H, Urashima K, Saito N

    International Journal of Plasma Environmental Science and Technology   10 巻 ( 02 ) 頁: 146 - 150   2016年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:The Institute of Electrostatics Japan  

    A special type of liquid plasma, named solution plasma (SP), has been applied to produce nanosized carbon black for the electrode material in Li-air battery. However, heat-treatment around 800 degree is essential to reduce the hydrogen atom remained within the carbon and to increase carbon's conductivity. In order to eliminate the energy-intensive heating process, in this study, we proposed to remove hydrogen atom by introducing chemical with halogen atom under room temperature plasma operation. Carbon nanoparticles were prepared by solution plasma with pure benzene (C6H6), chlorobenzene (C6H5Cl), various types of dichlorobenzene (C6H5Cl2) including 1,2-chlorobenzene, 1,3-chlorobenzene and 1,4 chlorobenzene served as the carbon precursors. The applied pulse frequency, applied voltage and pulse width were strictly controlled to be 25 kHz, 1 kV and 2 μs. The energy per pulse E and average energy per second Eavg by this specific plasma condition were calculated to be approximately 200 μJ and 5 J. The morphology of the synthesized carbon nanoball from benzene and 1,4-chlorobenzene were indicated in Fig. 1. The layer structure has been developed clearly on the outer layer of the carbon synthesized by chlorobenzene, as shown in Fig. 1(b). The resistivity of synthesized carbon by benzene was found to be 820 Ωcm, and decreased to 1.8 Ωcm when chlorobenzene was applied as precursor. From elemental analysis, the mole percentage of hydrogen remained in the synthesized carbon matrix decreased from 20% to 8.8% when the precursor changed from benzene to 1,4-chlorobenzene. We proposed that the chlorine atom in chlorobenzene reacted with hydrogen atoms and formed HCl (g), and successfully subtracted the hydrogen atom from the carbon matrix. Thus, sp2 bonding within carbon atoms was preferred and the conductivity of the synthesized carbon was easily enhanced.

    DOI: 10.34343/ijpest.2016.10.02.146

    CiNii Research

  139. Synthesis of Fe-Cu Bi-functional Catalysts by Solution Plasma Process for Li-air Battery Application

    Li OL, Takahashi R, Urashima K, Saito N

    International Journal of Plasma Environmental Science and Technology   10 巻 ( 01 ) 頁: 51 - 56   2016年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:The Institute of Electrostatics Japan  

    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.

    DOI: 10.34343/ijpest.2016.10.01.051

    CiNii Research

  140. Adsorption and desorption of DNA tuned by hydroxyl groups in graphite oxides-based solid extraction material 査読有り

    Akceoglu Garbis Atam, Li Oi Lun, Saito Nagahiro

    COLLOIDS AND SURFACES B-BIOINTERFACES   136 巻   頁: 1 - 6   2015年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Colloids and Surfaces B: Biointerfaces  

    DOI: 10.1016/j.colsurfb.2015.07.080

    Web of Science

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

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

    Journal of Physical Chemistry A   119 巻 ( 48 ) 頁: 11668 - 11673   2015年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Journal of Physical Chemistry A  

    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

    Web of Science

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  142. 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> 査読有り

    Jedsukontorn T.

    Chemical Engineering Journal   281 巻   頁: 252 - 264   2015年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Chemical Engineering Journal  

    DOI: 10.1016/j.cej.2015.06.078

    Web of Science

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  143. Innovative Graphite Oxide-Cellulose Based Material Specific for Genomic DNA Extraction 査読有り

    Akceoglu Garbis Atam, Li Oi Lun, Saito Nagahiro

    JOM   67 巻 ( 11 ) 頁: 2557 - 2563   2015年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:JOM  

    DOI: 10.1007/s11837-015-1610-6

    Web of Science

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  144. The Effect of Electrode Gap Distance on the Synthesis of Carbon Materials by Using Solution Plasma Process 査読有り

    Lee H., Ueno T., Saito N.

    JOM   67 巻 ( 11 ) 頁: 2550 - 2556   2015年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:JOM  

    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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  145. φ meson production in d + Au collisions at sNN =200 GeV

    Adare A., Aidala C., Ajitanand N.N., Akiba Y., Al-Bataineh H., Alexander J., Alfred M., Angerami A., Aoki K., Apadula N., Aramaki Y., Asano H., Atomssa E.T., Averbeck R., Awes T.C., Azmoun B., Babintsev V., Bai M., Baksay G., Baksay L., Bandara N.S., Bannier B., Barish K.N., Bassalleck B., Basye A.T., Bathe S., Baublis V., Baumann C., Bazilevsky A., Beaumier M., Beckman S., Belikov S., Belmont R., Bennett R., Berdnikov A., Berdnikov Y., Bhom J.H., Blau D.S., Bok J.S., Boyle K., Brooks M.L., Bryslawskyj J., Buesching H., Bumazhnov V., Bunce G., Butsyk S., Campbell S., Caringi A., Chen C.H., Chi C.Y., Chiu M., Choi I.J., Choi J.B., Choudhury R.K., Christiansen P., Chujo T., Chung P., Chvala O., Cianciolo V., Citron Z., Cole B.A., Conesa Del Valle Z., Connors M., Csanád M., Csörgo T., Dahms T., Dairaku S., Danchev I., Danley D., Das K., Datta A., Daugherity M.S., David G., Dayananda M.K., Deblasio K., Dehmelt K., Denisov A., Deshpande A., Desmond E.J., Dharmawardane K.V., Dietzsch O., Dion A., Diss P.B., Do J.H., Donadelli M., D'Orazio L., Drapier O., Drees A., Drees K.A., Durham J.M., Durum A., Dutta D., Edwards S., Efremenko Y.V., Ellinghaus F., Engelmore T., Enokizono A., En'Yo H., Esumi S., Fadem B.

    Physical Review C - Nuclear Physics   92 巻 ( 4 )   2015年10月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Physical Review C - Nuclear Physics  

    The PHENIX Collaboration has measured φ meson production in d+Au collisions at sNN=200 GeV using the dimuon and dielectron decay channels. The φ meson is measured in the forward (backward) d-going (Au-going) direction, 1.2y2.2 (-2.2y-1.2) in the transverse-momentum (pT) range from 1-7 GeV/c and at midrapidity y0.35 in the pT range below 7 GeV/c. The φ meson invariant yields and nuclear-modification factors as a function of pT, rapidity, and centrality are reported. An enhancement of φ meson production is observed in the Au-going direction, while suppression is seen in the d-going direction, and no modification is observed at midrapidity relative to the yield in p+p collisions scaled by the number of binary collisions. Similar behavior was previously observed for inclusive charged hadrons and open heavy flavor, indicating similar cold-nuclear-matter effects.

    DOI: 10.1103/PhysRevC.92.044909

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  146. Electrocatalytic oxygen reduction activity of boron-doped carbon nanoparticles synthesized via solution plasma process 査読有り

    Panomsuwan G., Saito N., Ishizaki T.

    Electrochemistry Communications   59 巻   頁: 81 - 85   2015年10月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Electrochemistry Communications  

    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

    Web of Science

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  147. Measurements of Elliptic and Triangular Flow in High-Multiplicity He 3 +Au Collisions at sNN =200GeV

    Adare A., Afanasiev S., Aidala C., Ajitanand N.N., Akiba Y., Akimoto R., Al-Bataineh H., Alexander J., Alfred M., Al-Ta'Ani H., Andrews K.R., Angerami A., Aoki K., Apadula N., Aphecetche L., Appelt E., Aramaki Y., Armendariz R., Aronson S.H., Asai J., Asano H., Aschenauer E.C., Atomssa E.T., Averbeck R., Awes T.C., Azmoun B., Babintsev V., Bai M., Baksay G., Baksay L., Baldisseri A., Bandara N.S., Bannier B., Barish K.N., Barnes P.D., Bassalleck B., Basye A.T., Bathe S., Batsouli S., Baublis V., Baumann C., Bazilevsky A., Beaumier M., Beckman S., Belikov S., Belmont R., Ben-Benjamin J., Bennett R., Berdnikov A., Berdnikov Y., Bhom J.H., Bickley A.A., Blau D.S., Boissevain J.G., Bok J.S., Borel H., Boyle K., Brooks M.L., Broxmeyer D., Bryslawskyj J., Buesching H., Bumazhnov V., Bunce G., Butsyk S., Camacho C.M., Campbell S., Caringi A., Castera P., Chang B.S., Chang W.C., Charvet J.L., Chen C.H., Chernichenko S., Chi C.Y., Chiba J., Chiu M., Choi I.J., Choi J.B., Choudhury R.K., Christiansen P., Chujo T., Chung P., Churyn A., Chvala O., Cianciolo V., Citron Z., Cleven C.R., Cole B.A., Comets M.P., Conesa Del Valle Z., Connors M., Constantin P., Csanád M., Csörgo T., Dahms T., Dairaku S., Danchev I., Danley D., Das K., Datta A.

    Physical Review Letters   115 巻 ( 14 )   2015年9月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Physical Review Letters  

    We present the first measurement of elliptic (v2) and triangular (v3) flow in high-multiplicity He3+Au collisions at sNN=200GeV. Two-particle correlations, where the particles have a large separation in pseudorapidity, are compared in He3+Au and in p+p collisions and indicate that collective effects dominate the second and third Fourier components for the correlations observed in the He3+Au system. The collective behavior is quantified in terms of elliptic v2 and triangular v3 anisotropy coefficients measured with respect to their corresponding event planes. The v2 values are comparable to those previously measured in d+Au collisions at the same nucleon-nucleon center-of-mass energy. Comparisons with various theoretical predictions are made, including to models where the hot spots created by the impact of the three He3 nucleons on the Au nucleus expand hydrodynamically to generate the triangular flow. The agreement of these models with data may indicate the formation of low-viscosity quark-gluon plasma even in these small collision systems.

    DOI: 10.1103/PhysRevLett.115.142301

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  148. Systematic study of azimuthal anisotropy in Cu + Cu and Au + Au collisions at s NN =62.4 and 200 GeV SYSTEMATIC STUDY of AZIMUTHAL ANISOTROPY in ⋯ A. ADARE et al.

    Adare A., Afanasiev S., Aidala C., Ajitanand N.N., Akiba Y., Al-Bataineh H., Al-Jamel A., Alexander J., Aoki K., Aphecetche L., Armendariz R., Aronson S.H., Asai J., Atomssa E.T., 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., Bauer F., Bazilevsky A., Belikov S., Bennett R., Berdnikov Y., Bickley A.A., Bjorndal M.T., Boissevain J.G., Borel H., Boyle K., Brooks M.L., Brown D.S., Bucher D., Buesching H., Bumazhnov V., Bunce G., Burward-Hoy J.M., Butsyk S., Campbell S., Chai J.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., Cobigo Y., Cole B.A., Comets M.P., Constantin P., Csanád M., Csörgo T., Dahms T., Das K., David G., Deaton M.B., Dehmelt K., Delagrange H., Denisov A., D'Enterria D., Deshpande A., Desmond E.J., Dietzsch O., Dion A., Donadelli M., Drachenberg J.L., 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., Espagnon B., Esumi S., Eyser K.O., Fields D.E., Finger M., Finger M., Fleuret F., Fokin S.L., Forestier B., Fraenkel Z.

    Physical Review C - Nuclear Physics   92 巻 ( 3 )   2015年9月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Physical Review C - Nuclear Physics  

    We have studied the dependence of azimuthal anisotropy v2 for inclusive and identified charged hadrons in Au+Au and Cu+Cu collisions on collision energy, species, and centrality. The values of v2 as a function of transverse momentum pT and centrality in Au+Au collisions at sNN=200 and 62.4 GeV are the same within uncertainties. However, in Cu+Cu collisions we observe a decrease in v2 values as the collision energy is reduced from 200 to 62.4 GeV. The decrease is larger in the more peripheral collisions. By examining both Au+Au and Cu+Cu collisions we find that v2 depends both on eccentricity and the number of participants, Npart. We observe that v2 divided by eccentricity () monotonically increases with Npart and scales as Npart1/3. The Cu+Cu data at 62.4 GeV falls below the other scaled v2 data. For identified hadrons, v2 divided by the number of constituent quarks nq is independent of hadron species as a function of transverse kinetic energy KET=mT-m between 0.1<KET/nq<1 GeV. Combining all of the above scaling and normalizations, we observe a near-universal scaling, with the exception of the Cu+Cu data at 62.4 GeV, of v2/(nq··Npart1/3) vs KET/nq for all measured particles.

    DOI: 10.1103/PhysRevC.92.034913

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  149. Systematic study of charged-pion and kaon femtoscopy in Au + Au collisions at s NN =200 GeV

    Adare A., Afanasiev S., Aidala C., Ajitanand N.N., Akiba Y., Al-Bataineh H., Alexander J., Alfred M., Aoki K., Apadula N., Aramaki Y., Asano H., Atomssa E.T., Averbeck R., Awes T.C., Azmoun B., Babintsev V., Bai M., Baksay G., Baksay L., Bandara N.S., Bannier B., Barish K.N., Bassalleck B., Basye A.T., Bathe S., Baublis V., Baumann C., Bazilevsky A., Beaumier M., Beckman S., Belikov S., Belmont R., Bennett R., Berdnikov A., Berdnikov Y., Bickley A.A., Blau D.S., Bok J.S., Boyle K., Brooks M.L., Bryslawskyj J., Buesching H., Bumazhnov V., Bunce G., Butsyk S., Camacho C.M., Campbell S., Chen C.H., Chi C.Y., Chiu M., Choi I.J., Choi J.B., Choudhury R.K., Christiansen P., Chujo T., Chung P., Chvala O., Cianciolo V., Citron Z., Cole B.A., Connors M., Constantin P., Csanád M., Csörgo T., Dahms T., Dairaku S., Danchev I., Danley D., Das K., Datta A., Daugherity M.S., David G., Deblasio K., Dehmelt K., Denisov A., Deshpande A., Desmond E.J., Dietzsch O., Dion A., Diss P.B., Do J.H., Donadelli M., Drapier O., Drees A., Drees K.A., Durham J.M., Durum A., Dutta D., Edwards S., Efremenko Y.V., Ellinghaus F., Engelmore T., Enokizono A., En'Yo H., Esumi S., Fadem B., Feege N., Fields D.E., Finger M.

    Physical Review C - Nuclear Physics   92 巻 ( 3 )   2015年9月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Physical Review C - Nuclear Physics  

    We present a systematic study of charged-pion and kaon interferometry in Au+Au collisions at sNN=200 GeV. The kaon mean source radii are found to be larger than pion radii in the outward and longitudinal directions for the same transverse mass; this difference increases for more central collisions. The azimuthal-angle dependence of the radii was measured with respect to the second-order event plane and similar oscillations of the source radii were found for pions and kaons. Hydrodynamic models qualitatively describe the similar oscillations of the mean source radii for pions and kaons, but they do not fully describe the transverse-mass dependence of the oscillations.

    DOI: 10.1103/PhysRevC.92.034914

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  150. 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   36 巻 ( 13 ) 頁: 1672 - 1679   2015年7月

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:Environmental Technology (United Kingdom)  

    DOI: 10.1080/09593330.2014.1003981

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  151. 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   36 巻 ( 13 ) 頁: 1672 - 1679   2015年7月

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:Environmental Technology (United Kingdom)  

    DOI: 10.1080/09593330.2014.1003981

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  152. Measurement of long-range angular correlation and quadrupole anisotropy of pions and (anti)protons in central d+Au collisions at sNN =200 GeV

    Adare A., Aidala C., Ajitanand N.N., Akiba Y., Akimoto R., Al-Bataineh H., Al-Ta'Ani H., Alexander J., Andrews K.R., Angerami A., Aoki K., Apadula N., Appelt E., Aramaki Y., Armendariz R., Aschenauer E.C., Atomssa E.T., Averbeck R., Awes T.C., Azmoun B., Babintsev V., Bai M., Baksay G., Baksay L., Bannier B., Barish K.N., Bassalleck B., Basye A.T., Bathe S., Baublis V., Baumann C., Bazilevsky A., Belikov S., Belmont R., Ben-Benjamin J., Bennett R., Bhom J.H., Blau D.S., Bok J.S., Boyle K., Brooks M.L., Broxmeyer D., Buesching H., Bumazhnov V., Bunce G., Butsyk S., Campbell S., Caringi A., Castera P., Chen C.H., Chi C.Y., Chiu M., Choi I.J., Choi J.B., Choudhury R.K., Christiansen P., Chujo T., Chung P., Chvala O., Cianciolo V., Citron Z., Cole B.A., Conesa Del Valle Z., Connors M., Csanád M., Csörgo T., Dahms T., Dairaku S., Danchev I., Das K., Datta A., David G., Dayananda M.K., Denisov A., Deshpande A., Desmond E.J., Dharmawardane K.V., Dietzsch O., Dion A., Donadelli M., Drapier O., Drees A., Drees K.A., Durham J.M., Durum A., Dutta D., D'Orazio L., Edwards S., Efremenko Y.V., Ellinghaus F., Engelmore T., Enokizono A., En'Yo H., Esumi S., Fadem B., Fields D.E., Finger M., Finger M., Fleuret F., Fokin S.L.

    Physical Review Letters   114 巻 ( 19 )   2015年5月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Physical Review Letters  

    We present azimuthal angular correlations between charged hadrons and energy deposited in calorimeter towers in central d+Au and minimum bias p+p collisions at sNN=200GeV. The charged hadron is measured at midrapidity |η|<0.35, and the energy is measured at large rapidity (-3.7<η<-3.1, Au-going direction). An enhanced near-side angular correlation across |Δη|>2.75 is observed in d+Au collisions. Using the event plane method applied to the Au-going energy distribution, we extract the anisotropy strength v2 for inclusive charged hadrons at midrapidity up to pT=4.5GeV/c. We also present the measurement of v2 for identified π± and (anti)protons in central d+Au collisions, and observe a mass-ordering pattern similar to that seen in heavy-ion collisions. These results are compared with viscous hydrodynamic calculations and measurements from p+Pb at sNN=5.02TeV. The magnitude of the mass ordering in d+Au is found to be smaller than that in p+Pb collisions, which may indicate smaller radial flow in lower energy d+Au collisions.

    DOI: 10.1103/PhysRevLett.114.192301

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  153. 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   12 巻 ( 5 ) 頁: 1769 - 1778   2015年5月

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:International Journal of Environmental Science and Technology  

    DOI: 10.1007/s13762-014-0570-7

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  154. 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   12 巻 ( 5 ) 頁: 1769 - 1778   2015年5月

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:International Journal of Environmental Science and Technology  

    DOI: 10.1007/s13762-014-0570-7

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  155. Search for dark photons from neutral meson decays in p+p and d+ Au collisions at sNN =200 GeV

    Adare A., Afanasiev S., Aidala C., Ajitanand N.N., Akiba Y., Akimoto R., Al-Bataineh H., Al-Ta'Ani H., Alexander J., Alfred M., Andrews K.R., Angerami A., Aoki K., Apadula N., Aphecetche L., Appelt E., Aramaki Y., Armendariz R., Asai J., Asano H., Aschenauer E.C., Atomssa E.T., Averbeck R., Awes T.C., Azmoun B., Babintsev V., Bai M., Baksay G., Baksay L., Baldisseri A., Bandara N.S., Bannier B., Barish K.N., Barnes P.D., Bassalleck B., Basye A.T., Bathe S., Batsouli S., Baublis V., Baumann C., Bazilevsky A., Beaumier M., Beckman S., Belikov S., Belmont R., Ben-Benjamin J., Bennett R., Berdnikov A., Berdnikov Y., Bhom J.H., Bickley A.A., Black D., Blau D.S., Boissevain J.G., Bok J.S., Borel H., Boyle K., Brooks M.L., Broxmeyer D., Bryslawskyj J., Buesching H., Bumazhnov V., Bunce G., Butsyk S., Camacho C.M., Campbell S., Caringi A., Castera P., Chang B.S., Chang W.C., Charvet J.L., Chen C.H., Chernichenko S., Chi C.Y., Chiu M., Choi I.J., Choi J.B., Choudhury R.K., Christiansen P., Chujo T., Chung P., Churyn A., Chvala O., Cianciolo V., Citron Z., Cole B.A., Conesa Del Valle Z., Connors M., Constantin P., Csanád M., Csörgo T., Dahms T., Dairaku S., Danchev I., Das K., Datta A., Daugherity M.S., David G., Dayananda M.K., Deblasio K.

    Physical Review C - Nuclear Physics   91 巻 ( 3 )   2015年3月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Physical Review C - Nuclear Physics  

    The standard model (SM) of particle physics is spectacularly successful, yet the measured value of the muon anomalous magnetic moment (g-2)μ deviates from SM calculations by 3.6σ. Several theoretical models attribute this to the existence of a "dark photon," an additional U(1) gauge boson, which is weakly coupled to ordinary photons. The PHENIX experiment at the Relativistic Heavy Ion Collider has searched for a dark photon, U, in π0,η→γe+e- decays and obtained upper limits of O(2×10-6) on U-γ mixing at 90% C.L. for the mass range 30<mU<90 MeV/c2. Combined with other experimental limits, the remaining region in the U-γ mixing parameter space that can explain the (g-2)μ deviation from its SM value is nearly completely excluded at the 90% confidence level, with only a small region of 29<mU<32 MeV/c2 remaining.

    DOI: 10.1103/PhysRevC.91.031901

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  156. Measurement of Υ(1S + 2S + 3S) production in p + p and Au+Au collisions at s NN = 200 GeV measurement of Υ(1S+2S+3S) production ... A. Adare et al.

    Adare A., Afanasiev S., Aidala C., Ajitanand N.N., Akiba Y., Akimoto R., Al-Bataineh H., Al-Ta'Ani H., Alexander J., Angerami A., Aoki K., Apadula N., Aphecetche L., Aramaki Y., Asai J., Asano H., Aschenauer E.C., Atomssa E.T., Averbeck R., Awes T.C., Azmoun B., Babintsev V., Bai M., Baksay G., Baksay L., Baldisseri A., Bannier B., Barish K.N., Barnes P.D., Bassalleck B., Basye A.T., Bathe S., Batsouli S., Baublis V., Baumann C., Baumgart S., Bazilevsky A., Belikov S., Belmont R., Bennett R., Berdnikov A., Berdnikov Y., Bickley A.A., Bing X., Blau D.S., Boissevain J.G., Bok J.S., Borel H., Boyle K., Brooks M.L., Buesching H., Bumazhnov V., Bunce G., Butsyk S., Camacho C.M., Campbell S., Castera P., Chang B.S., Chang W.C., Charvet J.L., Chen C.H., Chernichenko S., Chi C.Y., Chiu M., Choi I.J., Choi J.B., Choi S., Choudhury R.K., Christiansen P., Chujo T., Chung P., Churyn A., Chvala O., Cianciolo V., Citron Z., Cole B.A., Connors M., Constantin P., Csanád M., Csörgo T., Dahms T., Dairaku S., Das K., Datta A., Daugherity M.S., David G., Denisov A., D'Enterria D., Deshpande A., Desmond E.J., Dharmawardane K.V., Dietzsch O., Ding L., Dion A., Donadelli M., Drapier O., Drees A., Drees K.A., Dubey A.K., Durham J.M.

    Physical Review C - Nuclear Physics   91 巻 ( 2 )   2015年2月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Physical Review C - Nuclear Physics  

    Measurements of bottomonium production in heavy-ion and p+p collisions at the Relativistic Heavy Ion Collider (RHIC) are presented. The inclusive yield of the three Υ states, Υ(1S+2S+3S), was measured in the PHENIX experiment via electron-positron decay pairs at midrapidity for Au+Au and p+p collisions at sNN=200 GeV. The Υ(1S+2S+3S)→e+e- differential cross section at midrapidity was found to be Beedσ/dy=108±38(stat)±15(syst)±11(luminosity) pb in p+p collisions. The nuclear modification factor in the 30% most central Au+Au collisions indicates a suppression of the total Υ state yield relative to the extrapolation from p+p collision data. The suppression is consistent with measurements made by STAR at RHIC and at higher energies by the CMS experiment at the Large Hadron Collider.

    DOI: 10.1103/PhysRevC.91.024913

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  157. One-step facile synthesis of carbon-supported PdAu nanoparticles and their electrochemical property and stability 査読有り

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

    Journal of Alloys and Compounds   619 巻   頁: 452 - 457   2015年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Journal of Alloys and Compounds  

    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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  158. ソリューションプラズマを用いたメソポーラスシリカ担持白金触媒の合成と選択酸化触媒特性

    青木 淑恵, 是津 信行, 山本 剛久, 南部 宏暢, 齋藤 永宏

    表面技術   66 巻 ( 2 ) 頁: 70 - 72   2015年

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 表面技術協会  

    DOI: 10.4139/sfj.66.70

  159. 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

    表面技術   66 巻 ( 9 ) 頁: 416 - 419   2015年

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 表面技術協会  

    Many studies of recent decades have specifically examined high-performance carbon materials for application in next-generation batteries. Recently, an innovative technology named solution plasma (SP) has been drawing attention to carbon material synthesis. The most attractive aspect of SP is that, through this technology, the physical and chemical properties of synthesized carbon can be altered easily by varying the organic solvent. However, the conductivity of the SP synthesized carbon requires further improvement for application as an electrode material. In this study, molecules having π orbitals such as naphthalene or anthracene were introduced into benzene solvent to improve the conductivity of the synthesized carbon. Results of resistance measurements show that the resistance values of naphthalene (26.4 Ωcm) and anthracene (16.6 Ωcm) introduced carbons were improved by about 4 and 6 times, respectively, compared to carbon obtained from pure benzene (104 Ωcm). Details of the effects of solutes on the crystallinity and conductivity of the synthesized carbon are discussed.

    DOI: 10.4139/sfj.66.416

  160. Nitrogen-doped carbon nanoparticles derived from acrylonitrile plasma for electrochemical oxygen reduction 査読有り

    Panomsuwan Gasidit, Saito Nagahiro, Ishizaki Takahiro

    PHYSICAL CHEMISTRY CHEMICAL PHYSICS   17 巻 ( 9 ) 頁: 6227-6232   2015年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1039/c4cp05995f

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  161. Accelerated nanoparticles synthesis in alcohol-water-mixture-based solution plasma 査読有り

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

    Physical Chemistry Chemical Physics   17 巻 ( 45 ) 頁: 30255 - 30259   2015年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元: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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  162. Water-plasma-assisted synthesis of black titania spheres with efficient visible-light photocatalytic activity 査読有り

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

    Physical Chemistry Chemical Physics   17 巻 ( 21 ) 頁: 13794 - 13799   2015年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Physical Chemistry Chemical Physics  

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

    Panomsuwan G., Saito N., Ishizaki T.

    Journal of Materials Chemistry A   3 巻 ( 18 ) 頁: 9972 - 9981   2015年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元: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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  164. Nitrogen-doped carbon nanoparticles derived from acrylonitrile plasma for electrochemical oxygen reduction 査読有り

    Panomsuwan, G; Saito, N; Ishizaki, T

    PHYSICAL CHEMISTRY CHEMICAL PHYSICS   17 巻 ( 9 ) 頁: 6227-6232   2015年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1039/c4cp05995f

  165. In situ solution plasma synthesis of mesoporous nanocarbon-supported bimetallic nanoparticles 査読有り

    Kang J., Saito N.

    RSC Advances   5 巻 ( 37 ) 頁: 29131 - 29134   2015年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元: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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  166. Highly durable silica coated Pt/Cs with different surfactant types for proton exchange membrane fuel cell applications 査読有り

    Yaowarat Wattanachai, Li Oi Lun, Saito Nagahiro

    RSC ADVANCES   5 巻 ( 55 ) 頁: 44258 - 44262   2015年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:RSC Advances  

    DOI: 10.1039/c5ra03343h

    Web of Science

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  167. Enhancement of ORR catalytic activity by multiple heteroatom-doped carbon materials 査読有り

    Kim Dae-Wook, Li Oi Lun, Saito Nagahiro

    PHYSICAL CHEMISTRY CHEMICAL PHYSICS   17 巻 ( 1 ) 頁: 407 - 413   2015年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Physical Chemistry Chemical Physics  

    DOI: 10.1039/c4cp03868a

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

    Ishizaki T.

    Journal of the Electrochemical Society   162 巻 ( 14 ) 頁: C741 - C743   2015年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Journal of the Electrochemical Society  

    DOI: 10.1149/2.0351514jes

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  169. Cellulose conversion to sugar alcohol by solution plasma processing

    Watthanaphanit A.

    Materials Research Society Symposium Proceedings   1745 巻   頁: 22 - 27   2015年

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:Materials Research Society Symposium Proceedings  

    DOI: 10.1557/opl.2015.787

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

    Nemoto S.

    Materials Research Society Symposium Proceedings   1723 巻   頁: 1 - 7   2015年

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:Materials Research Society Symposium Proceedings  

    DOI: 10.1557/opl.2015.13

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

    Panomsuwan G.

    Materials Today: Proceedings   2 巻 ( 8 ) 頁: 4302 - 4308   2015年

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:Materials Today: Proceedings  

    DOI: 10.1016/j.matpr.2015.09.017

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  172. Cellulose conversion to sugar alcohol by solution plasma processing

    Watthanaphanit A.

    Materials Research Society Symposium Proceedings   1745 巻   頁: 22 - 27   2015年

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:Materials Research Society Symposium Proceedings  

    DOI: 10.1557/opl.2015.787

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

    Nemoto S.

    Materials Research Society Symposium Proceedings   1723 巻   頁: 1 - 7   2015年

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:Materials Research Society Symposium Proceedings  

    DOI: 10.1557/opl.2015.13

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

    Panomsuwan G.

    Materials Today: Proceedings   2 巻 ( 8 ) 頁: 4302 - 4308   2015年

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:Materials Today: Proceedings  

    DOI: 10.1016/j.matpr.2015.09.017

    Scopus

  175. PHENIX Collaboration

    Adare A.

    Nuclear Physics A   932 巻   頁: 627 - 633   2014年12月

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:Nuclear Physics A  

    DOI: 10.1016/S0375-9474(14)00604-6

    Scopus

  176. PHENIX Collaboration

    Adare A.

    Nuclear Physics A   932 巻   頁: 627 - 633   2014年12月

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:Nuclear Physics A  

    DOI: 10.1016/S0375-9474(14)00604-6

    Scopus

  177. 新しい液中反応場 : ソリューションプラズマ (特集 機能性マテリアルズとコンバーティング) 査読有り

    上野 智永, 齋藤 永宏

    コンバーテック   42 巻 ( 12 ) 頁: 78-81   2014年12月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)  

  178. A Study on Electron Impact Dissociative Ionization of Organosilicon Precursors for Plasma Processing 査読有り

    Yun Yongsup, Lee Myeonghoon, Inoue Yasushi, Saito Nagahiro, Takai Osamu

    JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY   14 巻 ( 12 ) 頁: 9653 - 9656   2014年12月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Journal of Nanoscience and Nanotechnology  

    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

    Web of Science

    Scopus

  179. One-step facile synthesis of Pd nanoclusters supported on carbon and their electrochemical property 査読有り

    Shi J.

    Progress in Natural Science: Materials International   24 巻 ( 6 ) 頁: 593 - 598   2014年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Progress in Natural Science: Materials International  

    DOI: 10.1016/j.pnsc.2014.10.011

    Web of Science

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  180. Measurement of KS0 and K∗0 in p+p, d+ Au, and Cu + Cu collisions at s NN =200 GeV measurement of KS0 and K∗0 in p+ ⋯ A. Adare et al.

    Adare A., Afanasiev S., Aidala C., Ajitanand N.N., Akiba Y., Akimoto R., Al-Bataineh H., Alexander J., Alfred M., Angerami A., Aoki K., Apadula N., Aphecetche L., Aramaki Y., Armendariz R., Aronson S.H., Asai J., Asano H., Atomssa E.T., Averbeck R., Awes T.C., Azmoun B., Babintsev V., Bai M., Baksay G., Baksay L., Baldisseri A., Bandara N.S., Bannier B., Barish K.N., Barnes P.D., Bassalleck B., Basye A.T., Bathe S., Batsouli S., Baublis V., Baumann C., Bazilevsky A., Beaumier M., Beckman S., Belikov S., Belmont R., Bennett R., Berdnikov A., Berdnikov Y., Bhom J.H., Bickley A.A., Black D., Blau D.S., Boissevain J.G., Bok J.S., Borel H., Boyle K., Brooks M.L., Bryslawskyj J., Buesching H., Bumazhnov V., Bunce G., Butsyk S., Campbell S., Caringi A., Chang B.S., Charvet J.L., Chen C.H., Chernichenko S., Chi C.Y., Chiba J., Chiu M., Choi I.J., Choi J.B., Choudhury R.K., Christiansen P., Chujo T., Chung P., Churyn A., Chvala O., Cianciolo V., Citron Z., Cleven C.R., Cole B.A., Comets M.P., Conesa Del Valle Z., Connors M., Constantin P., Csanád M., Csörgo T., Dahms T., Dairaku S., Danchev I., Das K., Datta A., Daugherity M.S., David G., Dayananda M.K., Deaton M.B., Deblasio K., Dehmelt K., Delagrange H., Denisov A., D'Enterria D.

    Physical Review C - Nuclear Physics   90 巻 ( 5 )   2014年11月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Physical Review C - Nuclear Physics  

    The PHENIX experiment at the Relativistic Heavy Ion Collider has performed a systematic study of KS0 and K∗0 meson production at midrapidity in p+p,d+Au, and Cu+Cu collisions at sNN=200 GeV. The KS0 and K∗0 mesons are reconstructed via their KS0→π0(→γγ)π0(→γγ) and K∗0→K±π decay modes, respectively. The measured transverse-momentum spectra are used to determine the nuclear modification factor of KS0 and K∗0 mesons in d+Au and Cu+Cu collisions at different centralities. In the d+Au collisions, the nuclear modification factor of KS0 and K∗0 mesons is almost constant as a function of transverse momentum and is consistent with unity, showing that cold-nuclear-matter effects do not play a significant role in the measured kinematic range. In Cu+Cu collisions, within the uncertainties no nuclear modification is registered in peripheral collisions. In central collisions, both mesons show suppression relative to the expectations from the p+p yield scaled by the number of binary nucleon-nucleon collisions in the Cu+Cu system. In the pT range 2-5 GeV/c, the strange mesons (KS0,K∗0) similarly to the φ meson with hidden strangeness, show an intermediate suppression between the more suppressed light quark mesons (π0) and the nonsuppressed baryons (p,p¯). At higher transverse momentum, pT>5 GeV/c, production of all particles is similarly suppressed by a factor of ≈2.

    DOI: 10.1103/PhysRevC.90.054905

    Scopus

  181. 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 査読有り

    Panomsuwan G.

    Vacuum   109 巻   頁: 175 - 179   2014年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Vacuum  

    DOI: 10.1016/j.vacuum.2014.07.007

    Web of Science

    Scopus

  182. Influence of the discharge time of solution plasma process on the formation of gold nanoparticles in alginate matrix 査読有り

    Watthanaphanit Anyarat, Heo Yong Kang, Saito Nagahiro

    JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS   45 巻 ( 6 ) 頁: 3099 - 3103   2014年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Journal of the Taiwan Institute of Chemical Engineers  

    DOI: 10.1016/j.jtice.2014.09.001

    Web of Science

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  183. Hierarchical meso-macro structure porous carbon black as electrode materials in Li-air battery 査読有り

    Kang Jun, Li Oi Lun, Saito Nagahiro

    JOURNAL OF POWER SOURCES   261 巻   頁: 156 - 161   2014年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Journal of Power Sources  

    DOI: 10.1016/j.jpowsour.2014.03.072

    Web of Science

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  184. Hierarchical Meso-Macro Structure Porous Carbon Black as Electrode Materials in Li-Air Battery 査読有り

    Jun Kang, Oi Lun Li, Nagahiro Saito

    Journal of Power Source   261 巻   頁: 156-161   2014年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  185. Plasma-Induced Synthesis of CuO Nanofibers and ZnO Nanoflowers in Water 査読有り

    Hu Xiulan, Zhang Xin, Shen Xiaodong, Li Hongtao, Takai Osamu, Saito Nagahiro

    PLASMA CHEMISTRY AND PLASMA PROCESSING   34 巻 ( 5 ) 頁: 1129 - 1139   2014年9月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1007/s11090-014-9546-0

    Web of Science

  186. Hierarchical Meso-Macro Structure Porous Carbon Black as Electrode Materials in Li-Air Battery 査読有り

    Jun Kang, Oi Lun Li, Nagahiro Saito

    Journal of Power Source   261 巻   頁: 156-161   2014年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  187. Hierarchical Meso-Macro Structure Porous Carbon Black as Electrode Materials in Li-Air Battery 査読有り

    Jun Kang, Oi Lun Li, Nagahiro Saito

    Journal of Power Source   261 巻   頁: 156-161   2014年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  188. Controlled crystalline orientation of SrTiO3 thin films grown on Pt(111)/Ti/alpha-Al2O3(0001) substrates: Effect of growth temperature and Ti layer thickness 査読有り

    Panomsuwan Gasidit, Takai Osamu, Saito Nagahiro

    APPLIED SURFACE SCIENCE   309 巻   頁: 95 - 105   2014年8月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Applied Surface Science  

    DOI: 10.1016/j.apsusc.2014.04.186

    Web of Science

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

    Panomsuwan G.

    Applied Physics Letters   105 巻 ( 5 ) 頁: 51911   2014年8月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Applied Physics Letters  

    DOI: 10.1063/1.4892827

    Web of Science

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  190. Synthesis of mono-dispersed nanofluids using solution plasma 査読有り

    Heo Yong Kang, Bratescu Maria Antoaneta, Ueno Tomonaga, Saito Nagahiro

    JOURNAL OF APPLIED PHYSICS   116 巻 ( 2 )   2014年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1063/1.4887806

    Web of Science

  191. Synthesis of meso-dispersed nanofluids using solution plasma 査読有り

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

    Journal of Applied Physyics   116 巻 ( 2 ) 頁: 024302   2014年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  192. Synthesis of meso-dispersed nanofluids using solution plasma 査読有り

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

    Journal of Applied Physyics   116 巻 ( 2 ) 頁: 024302   2014年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  193. Synthesis of meso-dispersed nanofluids using solution plasma 査読有り

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

    Journal of Applied Physyics   116 巻 ( 2 ) 頁: 024302   2014年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  194. The role of the central Fe atom in the N4-macrocyclic structure for the enhancement of oxygen reduction reaction in a heteroatom nitrogen-carbon nanosphere 査読有り

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

    Physical Chemistry Chemical Physics   16 巻   頁: 14905-14911   2014年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  195. The role of the central Fe atom in the N4-macrocyclic structure for the enhancement of oxygen reduction reaction in a heteroatom nitrogen-carbon nanosphere 査読有り

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

    Physical Chemistry Chemical Physics   16 巻   頁: 14905-14911   2014年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  196. The role of the central Fe atom in the N4-macrocyclic structure for the enhancement of oxygen reduction reaction in a heteroatom nitrogen-carbon nanosphere 査読有り

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

    Physical Chemistry Chemical Physics   16 巻   頁: 14905-14911   2014年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  197. Controlled crystalline orientation of SrTiO3 thin films grown on Pt(1 1 1)/Ti/α-Al2O3(0 0 0 1) substrates: Effect of growth temperature and Ti layer thickness 査読有り

    G. Panomsuwan, O. Takai, N. Saito

    Applied Surface Science   309 巻 ( 1 ) 頁: 95-105   2014年5月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  198. Controlled crystalline orientation of SrTiO3 thin films grown on Pt(1 1 1)/Ti/α-Al2O3(0 0 0 1) substrates: Effect of growth temperature and Ti layer thickness 査読有り

    G. Panomsuwan, O. Takai, N. Saito

    Applied Surface Science   309 巻 ( 1 ) 頁: 95-105   2014年5月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  199. Controlled crystalline orientation of SrTiO3 thin films grown on Pt(1 1 1)/Ti/α-Al2O3(0 0 0 1) substrates: Effect of growth temperature and Ti layer thickness 査読有り

    G. Panomsuwan, O. Takai, N. Saito

    Applied Surface Science   309 巻 ( 1 ) 頁: 95-105   2014年5月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  200. Growth of Highly (100)-Oriented SrTiO3 Thin Films on Si(111) Substrates Without Buffer Layer 査読有り

    Gasidit Panomsuwan, Osamu Takai, Nagahiro Saito

    JOURNAL OF THE AMERICAN CERAMIC SOCIETY   97 巻 ( 5 ) 頁: 1383 - 1385   2014年5月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:WILEY-BLACKWELL  

    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 degrees C to 850 degrees 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 degrees 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.

    DOI: 10.1111/jace.12912

    Web of Science

  201. FTO/Nafion/CNT/CoPc立体触媒電極を用いた炭酸ガスの電気化学的還元 (電子デバイス)

    藤島 環, 市川 友紀子, 斎藤 永宏, 上野 智永, 吉田 司

    電子情報通信学会技術研究報告 = IEICE technical report : 信学技報   114 巻 ( 12 ) 頁: 65-67 - 67   2014年4月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人電子情報通信学会  

    太陽光パネル生産量が年間40GWを超えるようになり、太陽光発電技術は主要な電力源となっている。天気の揺らぎが不可避であるため、近い将来再生可能エネルギーの大規模な利用は過剰な電力を生産する問題に直面すると思われる。人工光合成の分野で研究される太陽光の化学エネルギーへの直接変換よりもむしろ、余剰電力を利用し二酸化炭素を安全でエネルギー密度が高く、貯蔵が容易な化学エネルギーに還元できれば理想である。

  202. A New Approach of Non-Point Source Pollution/ Storwmater Sludge Treatment by Thermal Plasma Systems 査読有り

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

    International Journal of Environmental Science and Technology     頁: 1-10   2014年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

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

    Heo Y.

    Applied Physics Letters   104 巻 ( 14 ) 頁: 149901   2014年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Applied Physics Letters  

    DOI: 10.1063/1.4870525

    Web of Science

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

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

    RSC Advances   4 巻 ( 32 ) 頁: 16813-16819   2014年3月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

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

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

    RSC Advances   4 巻 ( 32 ) 頁: 16813-16819   2014年3月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

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

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

    RSC Advances   4 巻 ( 32 ) 頁: 16813-16819   2014年3月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  207. A phonon thermodynamics approach of gold nanofluids synthesized in solution plasma 査読有り

    Kang Heo Y.

    Applied Physics Letters   104 巻 ( 11 ) 頁: 111902   2014年3月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Applied Physics Letters  

    DOI: 10.1063/1.4868872

    Web of Science

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  208. Growth of Highly (100)-Oriented SrTiO3 Thin Films on Si (111) Substrates Without Buffer Layer 査読有り

    G. Panomsuwan, O. Takai, N. Saito

    Journal of the American Ceramic Society   97 巻 ( 5 ) 頁: 1383-1385   2014年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  209. Growth of Highly (100)-Oriented SrTiO3 Thin Films on Si (111) Substrates Without Buffer Layer 査読有り

    G. Panomsuwan, O. Takai, N. Saito

    Journal of the American Ceramic Society   97 巻 ( 5 ) 頁: 1383-1385   2014年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  210. Growth of Highly (100)-Oriented SrTiO3 Thin Films on Si (111) Substrates Without Buffer Layer 査読有り

    G. Panomsuwan, O. Takai, N. Saito

    Journal of the American Ceramic Society   97 巻 ( 5 ) 頁: 1383-1385   2014年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  211. Depolymerization of chitosan metal complexes via a solution plasma technique 査読有り

    Orathai Pornsunthorntawee, haiyapruk Katepetch, Chutima Vanichvattanadecha, Nagahiro Saito, Ratana Rujiravanit

    Carbohydrate Polymers   102 巻   頁: 504-512   2014年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  212. Depolymerization of chitosan-metal complexes via a solution plasma technique 査読有り

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

    CARBOHYDRATE POLYMERS   102 巻   頁: 504-512   2014年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1016/j.carbpol.2013.11.025

  213. Depolymerization of chitosan metal complexes via a solution plasma technique 査読有り

    Orathai Pornsunthorntawee, haiyapruk Katepetch, Chutima Vanichvattanadecha, Nagahiro Saito, Ratana Rujiravanit

    Carbohydrate Polymers   102 巻   頁: 504-512   2014年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  214. Depolymerization of chitosan metal complexes via a solution plasma technique 査読有り

    Orathai Pornsunthorntawee, haiyapruk Katepetch, Chutima Vanichvattanadecha, Nagahiro Saito, Ratana Rujiravanit

    Carbohydrate Polymers   102 巻   頁: 504-512   2014年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  215. A phonon thermodynamics approach of gold nanofluids synthesized in solution plasma 査読有り

    YongKang Heo, Maria Antoaneta Bratescu, Daiki Aburaya, Nagahiro Saito

    Applied Physics Letters   104 巻   頁: 111902   2014年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  216. A phonon thermodynamics approach of gold nanofluids synthesized in solution plasma 査読有り

    YongKang Heo, Maria Antoaneta Bratescu, Daiki Aburaya, Nagahiro Saito

    Applied Physics Letters   104 巻   頁: 111902   2014年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  217. A phonon thermodynamics approach of gold nanofluids synthesized in solution plasma 査読有り

    YongKang Heo, Maria Antoaneta Bratescu, Daiki Aburaya, Nagahiro Saito

    Applied Physics Letters   104 巻   頁: 111902   2014年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  218. 冷たい液中プラズマ反応場が拓く新しいナノ材料合成

    上野智永,齋藤永宏

    工業材料   62 巻 ( 1 ) 頁: 52-53   2014年1月

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    記述言語:日本語  

  219. 冷たい液中プラズマ反応場が拓く新しいナノ材料合成

    上野智永, 齋藤永宏

    工業材料   62 巻 ( 1 ) 頁: 52-53   2014年1月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)  

  220. 冷たい液中プラズマ反応場が拓く新しいナノ材料合成

    上野智永, 齋藤永宏

    工業材料   62 巻 ( 1 ) 頁: 52-53   2014年1月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)  

  221. Biomimetic superhydrophobic surface fabrication by plasma processing

    Watthanaphanit A.

    Biomimetic Architectures by Plasma Processing: Fabrication and Applications     頁: 151 - 180   2014年1月

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:Biomimetic Architectures by Plasma Processing: Fabrication and Applications  

    Scopus

  222. ソリューションプラズマ分子技術 (特集 表面・界面のメゾスコピックサイエンス) 査読有り

    上野 智永, 齋藤 永宏

    材料の科学と工学 : 日本材料科学会誌   51 巻 ( 4 ) 頁: 142-145   2014年

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)  

  223. Synthesis of mono-dispersed nanofluids using solution plasma 査読有り

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

    Journal of Applied Physics   116 巻 ( 2 ) 頁: -   2014年

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    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1063/1.4887806

  224. A novel one-step synthesis of gold nanoparticles in an alginate gel matrix by solution plasma sputtering 査読有り

    Anyarat Watthanaphanit, Gasidit Panomsuwan, Nagahiro Saito

    RSC Advances   4 巻   頁: 1622-1629   2014年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  225. A novel one-step synthesis of gold nanoparticles in an alginate gel matrix by solution plasma sputtering 査読有り

    Anyarat Watthanaphanit, Gasidit Panomsuwan, Nagahiro Saito

    RSC ADVANCES   4 巻 ( 4 ) 頁: 1622 - 1629   2014年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ROYAL SOC CHEMISTRY  

    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.

    DOI: 10.1039/c3ra45029e

    Web of Science

  226. The role of the central Fe atom in the N-4-macrocyclic structure for the enhancement of oxygen reduction reaction in a heteroatom nitrogen-carbon nanosphere 査読有り

    Kim Dae-wook, Li Oi Lun, Saito Nagahiro

    PHYSICAL CHEMISTRY CHEMICAL PHYSICS   16 巻 ( 28 ) 頁: 14905 - 14911   2014年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Physical Chemistry Chemical Physics  

    DOI: 10.1039/c4cp01406e

    Web of Science

    Scopus

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

    Kim Dae-Wook, Li Oi Lun, Pootawang Panuphong, Saito Nagahiro

    RSC ADVANCES   4 巻 ( 32 ) 頁: 16813 - 16819   2014年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:RSC Advances  

    DOI: 10.1039/c4ra02380c

    Web of Science

    Scopus

  228. Solution plasma exfoliation of graphene flakes from graphite electrodes 査読有り

    Hoonseung Lee, Maria Antoaneta Bratescu, Tomonaga Ueno, Nagahiro Saito

    RSC ADVANCES   4 巻 ( 93 ) 頁: 51758 - 51765   2014年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ROYAL SOC CHEMISTRY  

    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.

    DOI: 10.1039/c4ra03253e

    Web of Science

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

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

    JOURNAL OF MATERIALS CHEMISTRY A   2 巻 ( 43 ) 頁: 18677-18686 - 18686   2014年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Journal of Materials Chemistry A  

    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

    Scopus

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

    Panomsuwan G.

    Materials Research Society Symposium Proceedings   1641 巻   2014年

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:Materials Research Society Symposium Proceedings  

    DOI: 10.1557/opl.2014.319

    Scopus

  231. ソリューションプラズマとカーボン触媒

    齋藤 永宏

    応用物理   83 巻 ( 6 ) 頁: 486 - 487   2014年

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:公益社団法人 応用物理学会  

    DOI: 10.11470/oubutsu.83.6_486

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

    Panomsuwan G.

    Materials Research Society Symposium Proceedings   1641 巻   2014年

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:Materials Research Society Symposium Proceedings  

    DOI: 10.1557/opl.2014.319

    Scopus

  233. ソリューションプラズマとカーボン触媒

    齋藤 永宏

    応用物理   83 巻 ( 6 ) 頁: 486 - 487   2014年

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:公益社団法人 応用物理学会  

    DOI: 10.11470/oubutsu.83.6_486

  234. Charge Doping of Large-Area Graphene by Gold-Alloy Nanoparticles 査読有り

    Bratescu Maria Antoaneta, Saito Nagahiro

    JOURNAL OF PHYSICAL CHEMISTRY C   117 巻 ( 50 ) 頁: 26804 - 26810   2013年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1021/jp409368c

    Web of Science

    Scopus

  235. Gold Nanoparticle Synthesis Using Three-Dimensionally Integrated Micro-Solution Plasmas 査読有り

    Tatsuru Shirafuji, Jun Ueda, Akihiro Nakamura, Sung-Pyo Cho, Nagahiro Saito, Osamu Takai

    Japanese Journal of Applied Physics   52 巻   頁: 126202   2013年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  236. Gold Nanoparticle Synthesis Using Three-Dimensionally Integrated Micro-Solution Plasmas 査読有り

    Tatsuru Shirafuji, Jun Ueda, Akihiro Nakamura, Sung-Pyo Cho, Nagahiro Saito, Osamu Takai

    Japanese Journal of Applied Physics   52 巻   頁: 126202   2013年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  237. Gold Nanoparticle Synthesis Using Three-Dimensionally Integrated Micro-Solution Plasmas 査読有り

    Tatsuru Shirafuji, Jun Ueda, Akihiro Nakamura, Sung-Pyo Cho, Nagahiro Saito, Osamu Takai

    Japanese Journal of Applied Physics   52 巻   頁: 126202   2013年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  238. Charge Doping of Large-Area Graphene by Gold-Alloy Nanoparticles 査読有り

    M. A. Bratescu, N. Saito

    The Journal of Physical Chemistry C   117 巻   頁: 26804-26810   2013年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  239. Charge Doping of Large-Area Graphene by Gold-Alloy Nanoparticles 査読有り

    M. A. Bratescu, N. Saito

    The Journal of Physical Chemistry C   117 巻   頁: 26804-26810   2013年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  240. Charge Doping of Large-Area Graphene by Gold-Alloy Nanoparticles 査読有り

    M. A. Bratescu, N. Saito

    The Journal of Physical Chemistry C   117 巻   頁: 26804-26810   2013年11月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  241. Functionalization of Multiwalled Carbon Nanotubes by Solution Plasma Processing in Ammonia Aqueous Solution and Preparation of Composite Material with Polyamide 6 査読有り

    Tatsuru Shirafuji, Yohei Noguchi, Taibou Yamamoto, Junko Hieda, Nagahiro Saito, Osamu Takai, Akiharu Tsuchimoto, Kazuhiro Nojima, Youji Okabe

    Japanese Journal of Applied Phisics   52 巻 ( 12R ) 頁: 125101   2013年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  242. Functionalization of Multiwalled Carbon Nanotubes by Solution Plasma Processing in Ammonia Aqueous Solution and Preparation of Composite Material with Polyamide 6 査読有り

    Tatsuru Shirafuji, Yohei Noguchi, Taibou Yamamoto, Junko Hieda, Nagahiro Saito, Osamu Takai, Akiharu Tsuchimoto, Kazuhiro Nojima, Youji Okabe

    Japanese Journal of Applied Phisics   52 巻 ( 12R ) 頁: 125101   2013年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  243. Functionalization of Multiwalled Carbon Nanotubes by Solution Plasma Processing in Ammonia Aqueous Solution and Preparation of Composite Material with Polyamide 6 査読有り

    Tatsuru Shirafuji, Yohei Noguchi, Taibou Yamamoto, Junko Hieda, Nagahiro Saito, Osamu Takai, Akiharu Tsuchimoto, Kazuhiro Nojima, Youji Okabe

    Japanese Journal of Applied Phisics   52 巻 ( 12R ) 頁: 125101   2013年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  244. Epitaxial growth of (111)-oriented BaTiO3/SrTiO3 perovskite superlattices on Pt(111)/Ti/Al2O3(0001) substrates 査読有り

    Gasidit Panomsuwan, Osamu Takai, Nagahiro Saito

    Applied Physics Letters   103 巻   頁: 112902   2013年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  245. Epitaxial growth of (111)-oriented BaTiO3/SrTiO3 perovskite superlattices on Pt(111)/Ti/Al2O3(0001) substrates 査読有り

    Gasidit Panomsuwan, Osamu Takai, Nagahiro Saito

    Applied Physics Letters   103 巻   頁: 112902   2013年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  246. Epitaxial growth of (111)-oriented BaTiO3/SrTiO3 perovskite superlattices on Pt(111)/Ti/Al2O3(0001) substrates 査読有り

    Gasidit Panomsuwan, Osamu Takai, Nagahiro Saito

    Applied Physics Letters   103 巻   頁: 112902   2013年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  247. Degradation of beta-chitosan by solution plasma process (SPP)

    Prasertsung I., Damrongsakkul S., Saito N.

    POLYMER DEGRADATION AND STABILITY   98 巻 ( 10 ) 頁: 2089 - 2093   2013年10月

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    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1016/j.polymdegradstab.2013.07.001

    Web of Science

  248. Crosslinking of a Gelatin Solutions Induced by Pulsed Electrical Discharges in Solutions 査読有り

    Prasertsung I, Damrongsakkul S, Saito N.

    Plasma Processes and Polymers   10 巻 ( 9 ) 頁: 792 - 797   2013年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1002/ppap.201200148

    Web of Science

  249. Crosslinking of a Gelatin Solutions Induced by Pulsed Electrical Discharges in Solutions 査読有り

    Isarawut Prasertsung, Siriporn Damrongsakkul, Nagahiro Saito

    Plasma Processes and Polymers   10 巻 ( 9 ) 頁: 792-797   2013年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  250. Crosslinking of a Gelatin Solutions Induced by Pulsed Electrical Discharges in Solutions 査読有り

    Isarawut Prasertsung, Siriporn Damrongsakkul, Nagahiro Saito

    Plasma Processes and Polymers   10 巻 ( 9 ) 頁: 792-797   2013年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  251. Vasotocin mRNA Expression is Sensitive to Testosterone and Oestradiol in the Bed Nucleus of the Stria Terminalis in Female Japanese Quail

    Aste N., Sakamoto E., Kagami M., Saito N.

    JOURNAL OF NEUROENDOCRINOLOGY   25 巻 ( 9 ) 頁: 811 - 825   2013年9月

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    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1111/jne.12076

    Web of Science

  252. Crosslinking of a Gelatin Solutions Induced by Pulsed Electrical Discharges in Solutions 査読有り

    Isarawut Prasertsung, Siriporn Damrongsakkul, Nagahiro Saito

    Plasma Processes and Polymers   10 巻 ( 9 ) 頁: 792-797   2013年9月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  253. Vasotocin mRNA Expression is Sensitive to Testosterone and Oestradiol in the Bed Nucleus of the Stria Terminalis in Female Japanese Quail

    Aste N., Sakamoto E., Kagami M., Saito N.

    JOURNAL OF NEUROENDOCRINOLOGY   25 巻 ( 9 ) 頁: 811 - 825   2013年9月

     詳細を見る

    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1111/jne.12076

    Web of Science

  254. A simple synthesis method for nano-metal catalyst supported on mesoporous carbon; solution plasma process 査読有り

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

    Nanoscale   5 巻 ( 15 ) 頁: 6874-6882   2013年8月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  255. A simple synthesis method for nano-metal catalyst supported on mesoporous carbon; solution plasma process 査読有り

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

    Nanoscale   5 巻 ( 15 ) 頁: 6874-6882   2013年8月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  256. A simple synthesis method for nano-metal catalyst supported on mesoporous carbon; solution plasma process 査読有り

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

    Nanoscale   5 巻 ( 15 ) 頁: 6874-6882   2013年8月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  257. Synthesis of structure-controlled carbon nano spheres by solution plasma process 査読有り

    Kang Jun, Li Oi Lun, Saito Nagahiro

    CARBON   60 巻   頁: 292 - 298   2013年8月

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    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1016/j.carbon.2013.04.040

    Web of Science

  258. Synthesis of Structure-Controlled Carbon Nano Spheres by Solution Plasma Process 査読有り

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

    Carbon   60 巻   頁: 292-298   2013年8月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  259. Generation of Three-Dimensionally Integrated Micro Solution Plasmas and Its Application to Decomposition of Organic Contaminants in Water 査読有り

    Tatsuru Shirafuji, Yuta Himeno, Nagahiro Saito, Osamu Takai

    Journal of Photopolymer Science and Technology   26 巻 ( 4 ) 頁: 507-511   2013年8月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  260. Generation of Three-Dimensionally Integrated Micro Solution Plasmas and Its Application to Decomposition of Organic Contaminants in Water 査読有り

    Tatsuru Shirafuji, Yuta Himeno, Nagahiro Saito, Osamu Takai

    Journal of Photopolymer Science and Technology   26 巻 ( 4 ) 頁: 507-511   2013年8月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  261. Synthesis of Structure-Controlled Carbon Nano Spheres by Solution Plasma Process 査読有り

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

    Carbon   60 巻   頁: 292-298   2013年8月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  262. Generation of Three-Dimensionally Integrated Micro Solution Plasmas and Its Application to Decomposition of Organic Contaminants in Water 査読有り

    Tatsuru Shirafuji, Yuta Himeno, Nagahiro Saito, Osamu Takai

    Journal of Photopolymer Science and Technology   26 巻 ( 4 ) 頁: 507-511   2013年8月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  263. One-step synthesis of gold bimetallic nanoparticles with various metal-compositions 査読有り

    M. A. Bratescu, O. Takai, N. Saito

    Journal of Alloys and Compounds   562 巻   頁: 74-83   2013年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  264. One-step synthesis of gold bimetallic nanoparticles with various metal-compositions 査読有り

    M. A. Bratescu, O. Takai, N. Saito

    Journal of Alloys and Compounds   562 巻   頁: 74-83   2013年6月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  265. One-step synthesis of gold bimetallic nanoparticles with various metal-compositions 査読有り

    M. A. Bratescu, O. Takai, N. Saito

    Journal of Alloys and Compounds   562 巻   頁: 74-83   2013年6月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  266. One-step synthesis of gold bimetallic nanoparticles with various metal-compositions 査読有り

    Bratescu M. A, Takai O, Saito N.

    Journal of Alloys and Compounds   562 巻   頁: 74 - 83   2013年6月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1016/j.jallcom.2013.02.033

    Web of Science

  267. Effect of polymer concentration on the depolymerization of sodium alginate by the solution plasma process 査読有り

    Watthanaphanit Anyarat, Saito Nagahiro

    POLYMER DEGRADATION AND STABILITY   98 巻 ( 5 ) 頁: 1072 - 1080   2013年5月

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    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1016/j.polymdegradstab.2013.01.011

    Web of Science

  268. Effect of polymer concentration on the depolymerization of sodium alginate by the solution plasma process 査読有り

    Anyarat Watthanaphanit, Nagahiro Saito

    Polymer Degradation and Stability   98 巻 ( 5 ) 頁: 1072-1080   2013年5月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  269. Effect of polymer concentration on the depolymerization of sodium alginate by the solution plasma process 査読有り

    Anyarat Watthanaphanit, Nagahiro Saito

    Polymer Degradation and Stability   98 巻 ( 5 ) 頁: 1072-1080   2013年5月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  270. Effect of polymer concentration on the depolymerization of sodium alginate by the solution plasma process 査読有り

    Anyarat Watthanaphanit, Nagahiro Saito

    Polymer Degradation and Stability   98 巻 ( 5 ) 頁: 1072-1080   2013年5月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  271. Solution Plasma Sputtering Processes for the Synthesis of PtAu/C Catalysts for Li-Air Batteries 査読有り

    Chiaki Terashima, Yujiro Iwai, Sung-Pyo Cho, Tomonaga Ueno, Nobuyuki Zettsu, Nagahiro Saito, Osamu Takai

    International Journal of Electrochemical Science   8 巻   頁: 5407-5420   2013年4月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  272. Solution Plasma Sputtering Processes for the Synthesis of PtAu/C Catalysts for Li-Air Batteries 査読有り

    Chiaki Terashima, Yujiro Iwai, Sung-Pyo Cho, Tomonaga Ueno, Nobuyuki Zettsu, Nagahiro Saito, Osamu Takai

    International Journal of Electrochemical Science   8 巻   頁: 5407-5420   2013年4月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  273. Protein kinase C eta is targeted to lipid droplets

    Suzuki Michitaka, Iio Yuri, Saito Naoaki, Fujimoto Toyoshi

    HISTOCHEMISTRY AND CELL BIOLOGY   139 巻 ( 4 ) 頁: 505 - 511   2013年4月

     詳細を見る

    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1007/s00418-013-1083-z

    Web of Science

  274. Protein kinase C eta is targeted to lipid droplets

    Suzuki Michitaka, Iio Yuri, Saito Naoaki, Fujimoto Toyoshi

    HISTOCHEMISTRY AND CELL BIOLOGY   139 巻 ( 4 ) 頁: 505 - 511   2013年4月

     詳細を見る

    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1007/s00418-013-1083-z

    Web of Science

  275. Facile fabrication of PtAu alloy clusters using solution plasma sputtering and their electrocatalytic activity 査読有り

    Hu Xiulan, Shen Xiaodong, Takai Osamu, Saito Nagahiro

    JOURNAL OF ALLOYS AND COMPOUNDS   552 巻   頁: 351 - 355   2013年3月

     詳細を見る

    記述言語:日本語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1016/j.jallcom.2012.08.033

    Web of Science

  276. ソリューションプラズマにより作製したシリカの化学結合状態と形態

    山本 泰望, 上野 智永, 是津 信行, 高井 治, 齋藤 永宏

    表面技術 = The journal of the Surface Finishing Society of Japan   64 巻 ( 3 ) 頁: 180 - 184   2013年3月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 表面技術協会  

    Solution plasma processing, a reaction field available for chemical engineering, has high chemical activity because of its high electron temperature in the liquid, but low gas temperature. Consequently, it supplies activated species from plasma to liquid phases. Therefore, solution plasma has been anticipated for application to chemical processes such as synthesis of metal nanoparticles, and as a water treatment for sterilization and waste. We sought to synthesize silica by solution plasma, and to examine the effects of pH in the solution on the morphology and the chemical bonding state. Aqueous solutions containing tetraethoxysilane (TEOS) and ethanol were used as starting solutions. Then HCl or DEA (2.2'-iminodiethanol) was added to the solution to adjust the pH. The obtained materials were evaluated using scanning electron spectroscopy (SEM) and nuclear magnetic resonance (NMR). The morphology changes were observed as a two-dimensional tabular structure in an acid state, three-dimensional spherical structure in a base state, and two-dimensional and three-dimensional mixed structures in a neutral state. These structures originate mainly from the chemical bonding state of Si(OR)<sub>3</sub>(OSi), Si(OR)<sub>2</sub>(OSi)<sub>2</sub> in an acid state, Si(OR)<sub>1</sub>(OSi)<sub>3</sub>, Si(OSi)<sub>4</sub> in a base state, and Si(OR)<sub>2</sub>(OSi)<sub>2</sub> and Si(OR)(OSi)<sub>3</sub> in a neutral state.

    DOI: 10.4139/sfj.64.180

  277. Fabrication and characterization of epitaxial SrTiO3/Nb-doped SrTiO3 superlattices by double ECR ion beam sputter deposition 査読有り

    Panomsuwan Gasidit, Takai Osamu, Saito Nagahiro

    VACUUM   89 巻   頁: 35 - 39   2013年3月

     詳細を見る

    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1016/j.vacuum.2012.08.011

    Web of Science

  278. Nanomechanical Properties of Amorphous and Polycrystalline SrTiO3 Transparent Thin Films Prepared by Ion Beam Sputtering 査読有り

    Panomsuwan Gasidit, Takai Osamu, Saito Nagahiro

    JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE   22 巻 ( 3 ) 頁: 863 - 868   2013年3月

     詳細を見る

    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1007/s11665-012-0320-2

    Web of Science

  279. Growth of highly (110)- and (111)-textured SrTiO3 thin films on Pt(111)/alpha-Al2O3(0001) substrates by ECR ion beam sputter deposition 査読有り

    Panomsuwan Gasidit, Takai Osamu, Saito Nagahiro

    SOLID STATE COMMUNICATIONS   158 巻   頁: 65 - 69   2013年3月

     詳細を見る

    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1016/j.ssc.2012.12.026

    Web of Science

    Scopus

    その他リンク: http://orcid.org/0000-0001-8757-3933

  280. Solution Plasma Synthesis Process of Carbon Nano Particles in Organic Solutions 査読有り

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

    International Journal of Plasma Environmental Science and Technology   7 巻 ( 1 ) 頁: 31-36   2013年3月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  281. Facile fabrication of PtAu alloy clusters using solution plasma sputtering and their electrocatalytic activity 査読有り

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

    Journal of Alloys and Compounds   552 巻   頁: 351-355   2013年3月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  282. Growth of highly (110)- and (111)-textured SrTiO3 thin films on Pt(111)/α-Al2O3(0001) substrates by ECR ion beam sputter deposition 査読有り

    G. Panomsuwan, O. Takai, N. Saito

    Solid State Communications   158 巻   頁: 65-69   2013年3月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  283. Nanomechanical Properties of Amorphous and Polycrystalline SrTiO3 Transparent Thin Films Prepared by Ion Beam Sputtering 査読有り

    G. Panomsuwan, O. Takai, N. Saito

    Journal of Materials Engineering and Performance   22 巻 ( 3 ) 頁: 863-868   2013年3月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  284. Facile fabrication of PtAu alloy clusters using solution plasma sputtering and their electrocatalytic activity 査読有り

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

    Journal of Alloys and Compounds   552 巻   頁: 351-355   2013年3月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  285. Growth of highly (110)- and (111)-textured SrTiO3 thin films on Pt(111)/α-Al2O3(0001) substrates by ECR ion beam sputter deposition 査読有り

    G. Panomsuwan, O. Takai, N. Saito

    Solid State Communications   158 巻   頁: 65-69   2013年3月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  286. Nanomechanical Properties of Amorphous and Polycrystalline SrTiO3 Transparent Thin Films Prepared by Ion Beam Sputtering 査読有り

    G. Panomsuwan, O. Takai, N. Saito

    Journal of Materials Engineering and Performance   22 巻 ( 3 ) 頁: 863-868   2013年3月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  287. Facile fabrication of PtAu alloy clusters using solution plasma sputtering and their electrocatalytic activity 査読有り

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

    Journal of Alloys and Compounds   552 巻   頁: 351-355   2013年3月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  288. Growth of highly (110)- and (111)-textured SrTiO3 thin films on Pt(111)/α-Al2O3(0001) substrates by ECR ion beam sputter deposition 査読有り

    G. Panomsuwan, O. Takai, N. Saito

    Solid State Communications   158 巻   頁: 65-69   2013年3月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  289. Nanomechanical Properties of Amorphous and Polycrystalline SrTiO3 Transparent Thin Films Prepared by Ion Beam Sputtering 査読有り

    G. Panomsuwan, O. Takai, N. Saito

    Journal of Materials Engineering and Performance   22 巻 ( 3 ) 頁: 863-868   2013年3月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  290. Solution Plasma Synthesis Process of Carbon Nano Particles in Organic Solutions 査読有り

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

    International Journal of Plasma Environmental Science and Technology   7 巻 ( 1 ) 頁: 31-36   2013年3月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  291. Discharge time dependence of a solution plasma process for colloidal copper nanoparticle synthesis and particle characteristics 査読有り

    Pootawang P, Saito N, Lee S. Y.

    Nanotechnology   24 巻 ( 5 ) 頁: -   2013年2月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

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

    Web of Science

  292. Optical and mechanical properties of transparent SrTiO3 thin films deposited by ECR ion beam sputter deposition 査読有り

    G. Panomsuwan, O. Takai, N. Saito

    physica status solidi (a)   210 巻 ( 2 ) 頁: 311-319   2013年2月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  293. Optical and mechanical properties of transparent SrTiO3 thin films deposited by ECR ion beam sputter deposition 査読有り

    G. Panomsuwan, O. Takai, N. Saito

    physica status solidi (a)   210 巻 ( 2 ) 頁: 311-319   2013年2月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  294. Optical and mechanical properties of transparent SrTiO3 thin films deposited by ECR ion beam sputter deposition 査読有り

    G. Panomsuwan, O. Takai, N. Saito

    physica status solidi (a)   210 巻 ( 2 ) 頁: 311-319   2013年2月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  295. Comparison between the Mechanism of Liquid Plasma Discharge Process in Water and Organic Solution (論文特集 2012年度静電気学会全国大会)

    LI Helena Oi Lun, KANG Jun, URASHIMA Kuniko, SAITO Nagahiro

    静電気学会誌   37 巻 ( 1 ) 頁: 22 - 27   2013年1月

     詳細を見る

    掲載種別:研究論文(学術雑誌)   出版者・発行元:静電気学会  

  296. Comparison between the Mechanism of Liquid Plasma Discharge Process in Water and Organic Solution (論文特集 2012年度静電気学会全国大会)

    LI Helena Oi Lun, KANG Jun, URASHIMA Kuniko, SAITO Nagahiro

    静電気学会誌   37 巻 ( 1 ) 頁: 22 - 27   2013年1月

     詳細を見る

    掲載種別:研究論文(学術雑誌)   出版者・発行元:静電気学会  

  297. Simple Synthesis of Platinum Nanoparticles by Plasma Sputtering in Water 査読有り

    X. Hu, O. Takai, N. Saito

    Japanese Journal of Applied Physics   52 巻 ( 1S ) 頁: 01AN05   2013年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  298. Simple Synthesis of Platinum Nanoparticles by Plasma Sputtering in Water 査読有り

    X. Hu, O. Takai, N. Saito

    Japanese Journal of Applied Physics   52 巻 ( 1S ) 頁: 01AN05   2013年1月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  299. Simple Synthesis of Platinum Nanoparticles by Plasma Sputtering in Water 査読有り

    X. Hu, O. Takai, N. Saito

    Japanese Journal of Applied Physics   52 巻 ( 1S ) 頁: 01AN05   2013年1月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  300. Discharge time dependence of a solution plasma process for colloidal copper nanoparticle synthesis and particle characteristics 査読有り

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

    Nanotechnology   24 巻   頁: 055604   2013年1月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  301. Discharge time dependence of a solution plasma process for colloidal copper nanoparticle synthesis and particle characteristics 査読有り

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

    Nanotechnology   24 巻   頁: 055604   2013年1月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  302. Discharge time dependence of a solution plasma process for colloidal copper nanoparticle synthesis and particle characteristics 査読有り

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

    Nanotechnology   24 巻   頁: 055604   2013年1月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  303. Simple Synthesis of Platinum Nanoparticles by Plasma Sputtering in Water 査読有り

    Hu X. L, Takai O, Saito N.

    Japanese Journal of Applied Physics   52 巻 ( 1 ) 頁: -   2013年1月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.7567/JJAP.52.01AN05

    Web of Science

  304. A simple synthesis method for nano-metal catalyst supported on mesoporous carbon: the solution plasma process 査読有り

    Kang Jun, Li Oi Lun, Saito Nagahiro

    NANOSCALE   5 巻 ( 15 ) 頁: 6874 - 6882   2013年

     詳細を見る

    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1039/c3nr01229h

    Web of Science

  305. Solution Plasma Sputtering Processes for the Synthesis of PtAu/C Catalysts for Li-Air Batteries 査読有り

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

    International Journal of Electrochemical Science   8 巻 ( 4 ) 頁: 5407-5420   2013年

     詳細を見る

    掲載種別:研究論文(学術雑誌)  

  306. Highly efficient treatment of industrial wastewater by solution plasma with low environmental load 査読有り

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

    Water Science and Technology   68 巻 ( 4 ) 頁: 923 - 928   2013年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.2166/wst.2013.321

    Web of Science

  307. Gold Nanoparticle Synthesis Using Three-Dimensionally Integrated Micro-Solution Plasmas 査読有り

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

    Japanese Journal of Applied Physics   52 巻 ( 12 ) 頁: -   2013年

     詳細を見る

    掲載種別:研究論文(学術雑誌)  

    DOI: 10.7567/jjap.52.126202

  308. Generation of Three-Dimensionally Integrated Micro Solution Plasmas and Its Application to Decomposition of Organic Contaminants in Water 査読有り

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

    Journal of Photopolymer Science and Technology   26 巻 ( 4 ) 頁: 507-511   2013年

     詳細を見る

    掲載種別:研究論文(学術雑誌)  

  309. Functionalization of Multiwalled Carbon Nanotubes by Solution Plasma Processing in Ammonia Aqueous Solution and Preparation of Composite Material with Polyamide 6 査読有り

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

    Japanese Journal of Applied Physics   52 巻 ( 12 ) 頁: -   2013年

     詳細を見る

    掲載種別:研究論文(学術雑誌)  

    DOI: 10.7567/jjap.52.125101

  310. Comparison between the Mechanism of Liquid Plasma Discharge Process in Water and Organic Solution 査読有り

    Helena Oi Lun LI, Jun KANG, Kuniko URASHIMA, Nagahiro SAITO

    Journal of the Institute of Electrostatics Japan   37 巻 ( 1 ) 頁: 22-27   2013年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  311. Solution Plasma Synthesis Process of Carbon Nano Particles in Organic Solutions 査読有り

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

    International Journal of Plasma Environmental Science and Technology   7 巻 ( 1 ) 頁: 31-36   2013年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  312. Epitaxial growth of (111)-oriented BaTiO3/SrTiO3 perovskite superlattices on Pt(111)/Ti/Al2O3(0001) substrates

    G. Panomsuwan, O. Takai, N. Saito

    Applied Physics Letters   103 巻   頁: 112902   2013年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1063/1.4820780

  313. Degradation of b-chitosan by solution plasma process (SPP) 査読有り

    I. Prasertsung, S. Damrongsakkul, N. Saito

        2013年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1016

  314. Epitaxial growth of (111)-oriented BaTiO3/SrTiO3 perovskite superlattices on Pt(111)/Ti/Al2O3(0001) substrates 査読有り

    Panomsuwan, G; Takai, O; Saito, N

    APPLIED PHYSICS LETTERS   103 巻 ( 11 ) 頁: 112902   2013年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1063/1.4820780

  315. Gold Nanoparticle Synthesis Using Three-Dimensionally Integrated Micro-Solution Plasmas 査読有り

    Shirafuji, T; Ueda, J; Nakamura, A; Cho, SP; Saito, N; Takai, O

    JAPANESE JOURNAL OF APPLIED PHYSICS   52 巻 ( 12 ) 頁: 126202   2013年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.7567/JJAP.52.126202

  316. Functionalization of Multiwalled Carbon Nanotubes by Solution Plasma Processing in Ammonia Aqueous Solution and Preparation of Composite Material with Polyamide 6 査読有り

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

    JAPANESE JOURNAL OF APPLIED PHYSICS   52 巻 ( 12 ) 頁: UNSP 125101   2013年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.7567/JJAP.52.125101

  317. Comparison between the Mechanism of Liquid Plasma Discharge Process in Water and Organic Solution 査読有り

    Helena Oi Lun LI, Jun KANG, Kuniko URASHIMA, Nagahiro SAITO

    Journal of the Institute of Electrostatics Japan   37 巻 ( 1 ) 頁: 22-27   2013年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  318. Generation of Three-Dimensionally Integrated Micro Solution Plasmas and Its Application to Decomposition of Organic Contaminants in Water

    Shirafuji Tatsuru, Himeno Yuta, Saito Nagahiro, Takai Osamu

    Journal of Photopolymer Science and Technology   26 巻 ( 4 ) 頁: 507 - 511   2013年

     詳細を見る

    掲載種別:研究論文(学術雑誌)   出版者・発行元:フォトポリマー学会  

    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%.

    DOI: 10.2494/photopolymer.26.507

  319. Generation of Three-Dimensionally Integrated Micro Solution Plasmas and Its Application to Decomposition of Organic Contaminants in Water 査読有り

    Shirafuji T, Himeno Y, Saito N, Takai O

    Journal of Photopolymer Science and Technology   26 巻 ( 4 ) 頁: 507-511   2013年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    その他リンク: http://orcid.org/0000-0001-8757-3933

  320. Degradation of b-chitosan by solution plasma process (SPP) 査読有り

    I. Prasertsung, S. Damrongsakkul, N. Saito

    Polymer Degradation and Stability     2013年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  321. Solution Plasma Synthesis Process of Carbon Nano Particles in Organic Solutions 査読有り

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

    International Journal of Plasma Environmental Science and Technology   7 巻 ( 1 ) 頁: 31-36   2013年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  322. Synthesis of Nanomaterials by Solution Plasma Processing

    Takai Osamu, Bratescu Maria Antoaneta, Ueno Tomonaga, Saito Nagahiro

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

     詳細を見る

    掲載種別:研究論文(学術雑誌)  

    Web of Science

  323. Comparison between the Mechanism of Liquid Plasma Discharge Process in Water and Organic Solution 査読有り

    Helena Oi Lun LI, Jun KANG, Kuniko URASHIMA, Nagahiro SAITO

    Journal of the Institute of Electrostatics Japan   37 巻 ( 1 ) 頁: 22-27   2013年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  324. Degradation of b-chitosan by solution plasma process (SPP) 査読有り

    I. Prasertsung, S. Damrongsakkul, N. Saito

    Polymer Degradation and Stability     2013年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  325. Generation of Three-Dimensionally Integrated Micro Solution Plasmas and Its Application to Decomposition of Organic Contaminants in Water 査読有り

    Shirafuji T, Himeno Y, Saito N, Takai O

    Journal of Photopolymer Science and Technology   26 巻 ( 4 ) 頁: 507-511   2013年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    その他リンク: http://orcid.org/0000-0001-8757-3933

  326. Generation of Three-Dimensionally Integrated Micro Solution Plasmas and Its Application to Decomposition of Organic Contaminants in Water

    Shirafuji Tatsuru, Himeno Yuta, Saito Nagahiro, Takai Osamu

    Journal of Photopolymer Science and Technology   26 巻 ( 4 ) 頁: 507 - 511   2013年

     詳細を見る

    掲載種別:研究論文(学術雑誌)   出版者・発行元:フォトポリマー学会  

    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%.

    DOI: 10.2494/photopolymer.26.507

  327. Solution Plasma Sputtering Processes for the Synthesis of PtAu/C Catalysts for Li-Air Batteries 査読有り

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

    International Journal of Electrochemical Science   8 巻 ( 4 ) 頁: 5407-5420   2013年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    その他リンク: http://orcid.org/0000-0001-8757-3933

  328. Solution Plasma Synthesis Process of Carbon Nano Particles in Organic Solutions 査読有り

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

    International Journal of Plasma Environmental Science and Technology   7 巻 ( 1 ) 頁: 31-36   2013年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  329. Synthesis of Nanomaterials by Solution Plasma Processing

    Takai Osamu, Bratescu Maria Antoaneta, Ueno Tomonaga, Saito Nagahiro

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

     詳細を見る

    掲載種別:研究論文(学術雑誌)  

    Web of Science

  330. Solution Plasma Synthesis Process of Carbon Nano Particles in Organic Solutions

    Li OL, Kang J, Urashima K, Saito N

    International Journal of Plasma Environmental Science and Technology   07 巻 ( 01 ) 頁: 31 - 36   2013年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:The Institute of Electrostatics Japan  

    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.

    DOI: 10.34343/ijpest.2013.07.01.031

    CiNii Research

  331. 液体が接するプラズマ 「プラズマ電気化学」

    白藤 立, 齋藤 永広, 高井 治, 杤久保 文嘉, 安岡 康一, 金子 俊郎, 石島 達夫, 高橋 憲司, 竹内 希, 白井 直機

    表面科学   34 巻 ( 10 ) 頁: 547 - 552   2013年

     詳細を見る

    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:公益社団法人 日本表面科学会  

    DOI: 10.1380/jsssj.34.547

    CiNii Research

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

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

    15TH INTERNATIONAL CONFERENCE ON THIN FILMS (ICTF-15)   417 巻   2013年

     詳細を見る

    記述言語:日本語   掲載種別:研究論文(学術雑誌)  

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

    Web of Science

  333. Solution Plasma Synthesis Process of Carbon Nano Particles in Organic Solutions

    Li OL, Kang J, Urashima K, Saito N

    International Journal of Plasma Environmental Science and Technology   07 巻 ( 01 ) 頁: 31 - 36   2013年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:The Institute of Electrostatics Japan  

    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.

    DOI: 10.34343/ijpest.2013.07.01.31

    CiNii Research

  334. Orientation control of textured SrTiO3 thin films on platinized alpha-Al2O3 (0001) by an ion beam sputter deposition method

    Panomsuwan G., Takai O., Saito N.

    JOURNAL OF PHYSICS D-APPLIED PHYSICS   45 巻 ( 49 )   2012年12月

     詳細を見る

    掲載種別:研究論文(学術雑誌)  

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

    Web of Science

  335. Orientation control of textured SrTiO3 thin films on platinized alpha-Al2O3 (0001) by an ion beam sputter deposition method

    Panomsuwan G., Takai O., Saito N.

    JOURNAL OF PHYSICS D-APPLIED PHYSICS   45 巻 ( 49 )   2012年12月

     詳細を見る

    掲載種別:研究論文(学術雑誌)  

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

    Web of Science

  336. Inheritance and Developmental Pattern of Cerebral Hernia in the Crested Polish Chicken

    Yoshimura Keiji, Kinoshita Keiji, Mizutani Makoto, Matsuda Yoichi, Saito Noboru

    JOURNAL OF EXPERIMENTAL ZOOLOGY PART B-MOLECULAR AND DEVELOPMENTAL EVOLUTION   318B 巻 ( 8 ) 頁: 613 - 620   2012年12月

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    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1002/jez.b.22464

    Web of Science

  337. Inheritance and Developmental Pattern of Cerebral Hernia in the Crested Polish Chicken

    Yoshimura Keiji, Kinoshita Keiji, Mizutani Makoto, Matsuda Yoichi, Saito Noboru

    JOURNAL OF EXPERIMENTAL ZOOLOGY PART B-MOLECULAR AND DEVELOPMENTAL EVOLUTION   318B 巻 ( 8 ) 頁: 613 - 620   2012年12月

     詳細を見る

    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1002/jez.b.22464

    Web of Science

  338. ポリフェニレンエーテルアロイの燃焼抑制

    山下 武彦, 中島 江梨香, 武田 邦彦, 齋藤 永宏, 高井 治

    マテリアルライフ学会誌   24 巻 ( 3 ) 頁: 107 - 109   2012年10月

     詳細を見る

    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:マテリアルライフ学会  

    DOI: 10.11338/mls.24.107

    CiNii Research

  339. 第15回薄膜国際会議

    高井 治, 齋藤 永宏, 寺島 千晶

    真空   55 巻 ( 10 ) 頁: 464 - 468   2012年10月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本真空学会  

    DOI: 10.3131/jvsj2.55.464

  340. 自己組織化材料とバイオミメティック応用

    上野 智永, 是津 信行, 石崎 貴裕, 齋藤 永宏

    材料の科学と工学 = Materials science and technology   49 巻 ( 4 ) 頁: 157 - 161   2012年8月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)  

  341. Enhanced memory window of Au/BaTiO3/SrTiO3/Si(001) MFIS structure with high c-axis orientation for non-volatile memory applications 査読有り

    Panomsuwan, Gasidit, Osamu Takai, Nagahiro Saito

    APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING   108 巻 ( 2 ) 頁: 337-342   2012年8月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  342. Enhanced memory window of Au/BaTiO3/SrTiO3/Si(001) MFIS structure with high c-axis orientation for non-volatile memory applications 査読有り

    Panomsuwan, Gasidit, Osamu Takai, Nagahiro Saito

    APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING   108 巻 ( 2 ) 頁: 337-342   2012年8月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  343. Enhanced memory window of Au/BaTiO3/SrTiO3/Si(001) MFIS structure with high c-axis orientation for non-volatile memory applications

    Panomsuwan Gasidit, Takai Osamu, Saito Nagahiro

    APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING   108 巻 ( 2 ) 頁: 337 - 342   2012年8月

     詳細を見る

    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1007/s00339-012-7011-6

    Web of Science

  344. Enhanced memory window of Au/BaTiO3/SrTiO3/Si(001) MFIS structure with high c-axis orientation for non-volatile memory applications 査読有り

    Panomsuwan, Gasidit, Osamu Takai, Nagahiro Saito

    APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING   108 巻 ( 2 ) 頁: 337-342   2012年8月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  345. Enhanced memory window of Au/BaTiO3/SrTiO3/Si(001) MFIS structure with high c-axis orientation for non-volatile memory applications

    Panomsuwan Gasidit, Takai Osamu, Saito Nagahiro

    APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING   108 巻 ( 2 ) 頁: 337 - 342   2012年8月

     詳細を見る

    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1007/s00339-012-7011-6

    Web of Science

  346. ポリフェニレンエーテルアロイの燃焼抑制に関する考察

    山下 武彦, 中島 江梨香, 武田 邦彦, 齋藤 永宏, 高井 治

    高分子論文集   69 巻 ( 6 ) 頁: 297 - 299   2012年6月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:公益社団法人 高分子学会  

    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.

    DOI: 10.1295/koron.69.297

  347. ソリューションプラズマによるナノクラスター合成 (特集 大気圧プラズマと注目の応用) 査読有り

    上野 智永, 是津 信行, 齋藤 永宏

    オプトロニクス   31 巻 ( 6 ) 頁: 94-97   2012年6月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)  

  348. Study on the Combustion Inhibition of Poly Phenylene Ether Alloy 査読有り

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

    Kobunshi Ronbunshu   69 巻 ( 6 ) 頁: 297-299   2012年6月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  349. Study on the Combustion Inhibition of Poly Phenylene Ether Alloy

    Yamashita Takehiko, Nakashima Erika, Takeda Kunihiko, Saito Nagahiro, Takai Osamu

    KOBUNSHI RONBUNSHU   69 巻 ( 6 ) 頁: 297 - 299   2012年6月

     詳細を見る

    掲載種別:研究論文(学術雑誌)  

    Web of Science

  350. Study on the Combustion Inhibition of Poly Phenylene Ether Alloy 査読有り

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

    Kobunshi Ronbunshu   69 巻 ( 6 ) 頁: 297-299   2012年6月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  351. Study on the Combustion Inhibition of Poly Phenylene Ether Alloy

    Yamashita Takehiko, Nakashima Erika, Takeda Kunihiko, Saito Nagahiro, Takai Osamu

    KOBUNSHI RONBUNSHU   69 巻 ( 6 ) 頁: 297 - 299   2012年6月

     詳細を見る

    掲載種別:研究論文(学術雑誌)  

    Web of Science

  352. Study on the Combustion Inhibition of Poly Phenylene Ether Alloy 査読有り

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

    Kobunshi Ronbunshu   69 巻 ( 6 ) 頁: 297-299   2012年6月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  353. ポリフェニレンエーテルアロイの燃焼抑制と熱分解挙動に関する考察

    山下 武彦, 中島 江梨香, 武田 邦彦, 齋藤 永宏, 高井 治

    マテリアルライフ学会誌   24 巻 ( 2 ) 頁: 60 - 68   2012年5月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:マテリアルライフ学会  

    <p>本研究では、熱分解やその他の解析を行うことでポリフェニレンエーテル樹脂およびそのアロイの燃焼抑制効果に関して,検討を行った.その結果,ポリフェニレンエーテルアロイの難燃化においては各種カルボン酸塩が有効であることが判明した.これらは主として食品添加物として広く知られている安全な化合物であるが,顕著な燃焼抑制効果をもたらすという新しい知見を得た.特に構造にベンゼン環を持つNa塩が最も高い燃焼抑制効果をもたらした.一方,NEATのポリフェニレンエーテルアロイ樹脂の燃焼初期段階の表面拡大観察,並びに分析によってポリフェニレンエーテル樹脂と相溶化樹脂の双方が独自に異なる温度で熱分解するのではなく,一成分分子のような比較的均一に熱分解することがわかった.さらに,ポリフェニレンエーテル樹脂の熱分解生成物を同定した結果,多岐にわたる単量体と二量体の生成が見られたが,特に単量体については,その生成プロセスの整理を行った.</p>

    DOI: 10.11338/mls.24.60

    CiNii Research

  354. Preparation and wettability examinations of transparent SiO2 binder-added MgF2 nanoparticle coatings covered with fluoro-alkyl silane self-assembled monolayer 査読有り

    Murata Tsuyoshi, Hieda Junko, Saito Nagahiro, Takai Osamu

    APPLIED OPTICS   51 巻 ( 13 ) 頁: 2298 - 2305   2012年5月

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    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1364/AO.51.002298

    Web of Science

  355. Preparation and wettability examinations of transparent SiO2 binder-added MgF2 nanoparticle coatings covered with fluoro-alkyl silane self-assembled monolayer 査読有り

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

    Applied Optics   51 巻 ( 13 ) 頁: 2298-2305   2012年5月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  356. Preparation and wettability examinations of transparent SiO2 binder-added MgF2 nanoparticle coatings covered with fluoro-alkyl silane self-assembled monolayer 査読有り

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

    Applied Optics   51 巻 ( 13 ) 頁: 2298-2305   2012年5月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  357. Preparation and wettability examinations of transparent SiO2 binder-added MgF2 nanoparticle coatings covered with fluoro-alkyl silane self-assembled monolayer 査読有り

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

    Applied Optics   51 巻 ( 13 ) 頁: 2298-2305   2012年5月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  358. アークイオンプレーティング法によるITO膜の内部応力に及ぼす結晶化の影響

    小島 啓安, 齋藤 永宏, 高井 治

    表面技術 = The journal of the Surface Finishing Society of Japan   63 巻 ( 4 ) 頁: 272 - 274   2012年4月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:表面技術協会  

  359. Active Species Generated by a Pulsed Arc Electrohydraulic Discharge Plasma Channel in Contaminated Water Treatments 査読有り

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

    Plasma Chemistry and Plasma Processing   32 巻 ( 2 ) 頁: 343-358   2012年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  360. Active Species Generated by a Pulsed Arc Electrohydraulic Discharge Plasma Channel in Contaminated Water Treatments 査読有り

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

    Plasma Chemistry and Plasma Processing   32 巻 ( 2 ) 頁: 343-358   2012年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  361. Effects of Substrate Temperature on Properties of Tin-Doped Indium Oxide Films Deposited by Activated Electron Beam Evaporation

    KOJIMA Hiroyasu, SAITO Nagahiro, TAKAI Osamu

    表面技術 = The journal of the Surface Finishing Society of Japan   63 巻 ( 3 ) 頁: 173 - 178   2012年3月

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 表面技術協会  

    The coating process was conducted using an inline-type plasma deposition system. Thin and thick films containing SnO<sub>2</sub> were prepared from the starting material sintered ITO pellets (0–15 wt% SnO<sub>2</sub>). The thin film (<0.6 μm thick) showed an amorphous-like structure. The thick film (>1 μm thick) showed a well-ordered crystalline structure. The crystalline and electrical properties of the films were dependent on the deposition temperature and were closely related to the SnO<sub>2</sub> contents. Films deposited on substrates at temperatures of 50–180°C comprised a mixture of amorphous and polycrystalline phases and had a hazy appearance because of light scattering at the rough surface. That appearance was not observed in films with 0 wt% SnO<sub>2</sub> content, but it was observed with increasing SnO<sub>2</sub> content and substrate temperature. In films with thickness greater than 0.6 μm, the hazy appearance was more pronounced than in films with thickness of less than 0.6 μm. Polycrystalline ITO films with a clean and transparent appearance, as well as minimum resistivity of 1.7×10<sup>−4</sup> Ω cm, were obtained on substrates at 180 °C (4 wt%, 7.5 wt% SnO<sub>2</sub>). Transparent and uniform ITO films with sheet resistance of 1.7 Ω/□ were obtained at 2.1 μm thickness at a high deposition rate (ca. 0.5 μm/min).

    DOI: 10.4139/sfj.63.173

  362. High-Rate Reactive Deposition of SiO₂ Films Using a New DC Rotary Sputtering Cathode

    KOJIMA Hiroyasu, SAITO Nagahiro, TAKAI Osamu

    表面技術 = The journal of the Surface Finishing Society of Japan   63 巻 ( 3 ) 頁: 179 - 183   2012年3月

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 表面技術協会  

    DC reactive sputtering of SiO<sub>2</sub> films is performed using a new rotary cathode. The cathode is positioned at the center of the vacuum chamber used for deposition, so that the chamber is partitioned into a pre-sputtering zone and a deposition zone assisted by a partition block. When this new rotary cathode is used, the insulating film formed at the boundary between the eroded and uneroded areas on the target surface is removed. The insulating film mentioned above causes arcing during sputtering, but the new method suppresses arcing, and the electrical conductivity of the metallic cathode is increased. Consequently, the deposition rate is increased considerably during DC reactive sputtering.<br>This new method necessitates two separate zones in the vacuum chamber: a pre-sputtering zone and a deposition zone. Plasma of two types must be introduced into the two zones simultaneously. The ignition voltage and sputtering voltage in each zone are controlled according to the discharge gas pressure in each zone. Using this method, the deposition rate for SiO<sub>2</sub> films can be increased to 4 nm/s, which is 2.5 times the conventional deposition rate.

    DOI: 10.4139/sfj.63.179

  363. Effects of Substrate Temperature on Properties of Tin-Doped Indium Oxide Films Deposited by Activated Electron Beam Evaporation

    KOJIMA Hiroyasu, SAITO Nagahiro, TAKAI Osamu

    表面技術 = The journal of the Surface Finishing Society of Japan   63 巻 ( 3 ) 頁: 173 - 178   2012年3月

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 表面技術協会  

    The coating process was conducted using an inline-type plasma deposition system. Thin and thick films containing SnO<sub>2</sub> were prepared from the starting material sintered ITO pellets (0–15 wt% SnO<sub>2</sub>). The thin film (<0.6 μm thick) showed an amorphous-like structure. The thick film (>1 μm thick) showed a well-ordered crystalline structure. The crystalline and electrical properties of the films were dependent on the deposition temperature and were closely related to the SnO<sub>2</sub> contents. Films deposited on substrates at temperatures of 50–180°C comprised a mixture of amorphous and polycrystalline phases and had a hazy appearance because of light scattering at the rough surface. That appearance was not observed in films with 0 wt% SnO<sub>2</sub> content, but it was observed with increasing SnO<sub>2</sub> content and substrate temperature. In films with thickness greater than 0.6 μm, the hazy appearance was more pronounced than in films with thickness of less than 0.6 μm. Polycrystalline ITO films with a clean and transparent appearance, as well as minimum resistivity of 1.7×10<sup>−4</sup> Ω cm, were obtained on substrates at 180 °C (4 wt%, 7.5 wt% SnO<sub>2</sub>). Transparent and uniform ITO films with sheet resistance of 1.7 Ω/□ were obtained at 2.1 μm thickness at a high deposition rate (ca. 0.5 μm/min).

    DOI: 10.4139/sfj.63.173

  364. High-Rate Reactive Deposition of SiO₂ Films Using a New DC Rotary Sputtering Cathode

    KOJIMA Hiroyasu, SAITO Nagahiro, TAKAI Osamu

    表面技術 = The journal of the Surface Finishing Society of Japan   63 巻 ( 3 ) 頁: 179 - 183   2012年3月

     詳細を見る

    掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 表面技術協会  

    DC reactive sputtering of SiO<sub>2</sub> films is performed using a new rotary cathode. The cathode is positioned at the center of the vacuum chamber used for deposition, so that the chamber is partitioned into a pre-sputtering zone and a deposition zone assisted by a partition block. When this new rotary cathode is used, the insulating film formed at the boundary between the eroded and uneroded areas on the target surface is removed. The insulating film mentioned above causes arcing during sputtering, but the new method suppresses arcing, and the electrical conductivity of the metallic cathode is increased. Consequently, the deposition rate is increased considerably during DC reactive sputtering.<br>This new method necessitates two separate zones in the vacuum chamber: a pre-sputtering zone and a deposition zone. Plasma of two types must be introduced into the two zones simultaneously. The ignition voltage and sputtering voltage in each zone are controlled according to the discharge gas pressure in each zone. Using this method, the deposition rate for SiO<sub>2</sub> films can be increased to 4 nm/s, which is 2.5 times the conventional deposition rate.

    DOI: 10.4139/sfj.63.179

  365. Growth and characterization of highly c-axis textured SrTiO3 thin films directly grown on Si(001) substrates by ion beam sputter deposition

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

    CRYSTAL RESEARCH AND TECHNOLOGY   47 巻 ( 2 ) 頁: 187 - 194   2012年2月

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    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1002/crat.201100573

    Web of Science

  366. Growth and characterization of highly c-axis textured SrTiO3 thin films directly grown on Si(001) substrates by ion beam sputter deposition

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

    CRYSTAL RESEARCH AND TECHNOLOGY   47 巻 ( 2 ) 頁: 187 - 194   2012年2月

     詳細を見る

    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1002/crat.201100573

    Web of Science

  367. Rapid Synthesis and Structural Characterization of Well-Defined Gold Clusters by Solution Plasma Sputtering 査読有り

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

    Crystal Growth & Design   12 巻 ( 1 ) 頁: 119 - 123   2012年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1021/cg2008528

    Web of Science

  368. High sensitive detection of volatile organic compounds using superhydrophobic quartz crystal microbalance 査読有り

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

    Sensors and Actuators B: Chemical   164 巻 ( 1 ) 頁: 15-21   2012年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  369. Effect of substrate temperature on properties of tin-doped indium oxide films deposited by activated electron beam evaporation 査読有り

    H. Kojima, N. Saito, O. Takai

      63 巻 ( 3 ) 頁: 173-178   2012年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  370. High-rate reactive deposition of SiO2 films using a new DC rotary sputtering cathode 査読有り

    H. Kojima, N. Saito, O. Takai

      63 巻 ( 3 ) 頁: 179-183   2012年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  371. Growth and characterization of highly c-axis textured SrTiO3 thin films directly grown on Si(001) substrates by ion beam sputter deposition 査読有り

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

    Crystal Research and Technology   47 巻 ( 2 ) 頁: 187-194   2012年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  372. Preparation of low molecular weight chitosan using solution plasma system 査読有り

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

    Carbohydrate Polymers   87 巻 ( 4 ) 頁: 2745-2749   2012年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  373. アークイオンプレーティング法によるITO膜の内部応力に及ぼす結晶化の影響 査読有り

    小島啓安, 齋藤永宏, 高井治

    表面技術   63 巻 ( 4 ) 頁: 272-274   2012年

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)  

  374. アークイオンプレーティング法によるITO膜の内部応力に及ぼす結晶化の影響

    小島 啓安, 齋藤 永宏, 高井 治

    表面技術   63 巻 ( 4 ) 頁: .   2012年

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 表面技術協会  

    DOI: 10.4139/sfj.63.272

  375. ソリューションプラズマによるナノ粒子合成(ヘッドライン:プラズマの新展開-大気圧・液中プラズマ-)

    上野 智永, 齋藤 永宏

    化学と教育   60 巻 ( 9 ) 頁: 376 - 379   2012年

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:公益社団法人 日本化学会  

    DOI: 10.20665/kakyoshi.60.9_376

  376. Study on the Combustion Inhibition of Poly Phenylene Ether Alloy 査読有り

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

    Kobunshi Ronbunshu   69 巻 ( 6 ) 頁: 297-299   2012年

     詳細を見る

    掲載種別:研究論文(学術雑誌)  

  377. Rapid synthesis of ordered hexagonal mesoporous silica and their incorporation with Ag nanoparticles by solution plasma 査読有り

    Panuphong Pootawang, Nagahiro Saito, Osamu Takai, Sang Yul Lee

    Materials Research Bulletin   47 巻 ( 10 ) 頁: 2726-2729   2012年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  378. Synthesis and characteristics of Ag/Pt bimetallic nanocomposites by arc-discharge solution plasma processing 査読有り

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

    Nanotechnology   23 巻 ( 39 ) 頁: 395-602   2012年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  379. Orientation Control of Textured SrTiO3 Thin Films on Platinized Al2O3 (0 0 0 1) by an Ion Beam Sputter Deposition Method 査読有り

    G. Panomsuwan, O. Takai, N. Saito

    Journal of Physics D: Applied Physics   45 巻 ( 49 ) 頁: 494003   2012年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  380. The Role of Activated Nitrogen Species on Double-folded Screen Nitriding Process 査読有り

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

    Journal of Physics: Conference Series   417 巻   頁: 012023   2012年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  381. Rapid Synthesis of ordered hexagonal mesoporous silica and their incorporation with Ag nanoparticles by solution plasma 査読有り

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

    Materials Resarch Bulletin   47 巻 ( 10 ) 頁: 2726-2729   2012年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  382. Enhanced memory window of Au/BaTiO3/SrTiO3/Si(001) MFIS structure with high c-axis orientation for non-volatile memory applications 査読有り

    G. Panomsuwan, O. Takai, N. Saito

    Applied Physics A   108 巻 ( 2 ) 頁: 337-342   2012年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  383. Active Species Generated by a Pulsed Arc Electrohydraulic Discharge Plasma Channel in Contaminated Water Treatments +K18:K26 査読有り

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

    Plasma Chemistry and Plasma Processing   32 巻 ( 2 ) 頁: 343-358   2012年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  384. Fabrication and characterization of epitaxial SrTiO3/Nb-doped SrTiO3 superlattices by double ECR ion beam sputter deposition 査読有り

    G. Panomsuwan, O. Takai, N. Saito

    Vacuum   89 巻   頁: 35-39   2012年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  385. Rapid Sterilization of Escherichia coli by Solution Plasma Process 査読有り

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

    Japanese Journal of Applied Physics   51 巻 ( 12 ) 頁: 126-201   2012年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  386. Effect of substrate temperature on properties of tin-doped indium oxide films deposited by activated electron beam evaporation 査読有り

    H. Kojima, N. Saito, O. Takai

    表面技術   63 巻 ( 3 ) 頁: 173-178   2012年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  387. High-rate reactive deposition of SiO2 films using a new DC rotary sputtering cathode 査読有り

    H. Kojima, N. Saito, O. Takai

    表面技術   63 巻 ( 3 ) 頁: 179-183   2012年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  388. High sensitive detection of volatile organic compounds using superhydrophobic quartz crystal microbalance 査読有り

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

    Sensors and Actuators B: Chemical   164 巻 ( 1 ) 頁: 15-21   2012年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  389. Growth and characterization of highly c-axis textured SrTiO3 thin films directly grown on Si(001) substrates by ion beam sputter deposition 査読有り

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

    Crystal Research and Technology   47 巻 ( 2 ) 頁: 187-194   2012年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  390. Fabrication and characterization of epitaxial SrTiO3/Nb-doped SrTiO3 superlattices by double ECR ion beam sputter deposition 査読有り

    G. Panomsuwan, O. Takai, N. Saito

    Vacuum   89 巻   頁: 35-39   2012年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  391. Enhanced memory window of Au/BaTiO3/SrTiO3/Si(001) MFIS structure with high c-axis orientation for non-volatile memory applications 査読有り

    G. Panomsuwan, O. Takai, N. Saito

    Applied Physics A   108 巻 ( 2 ) 頁: 337-342   2012年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  392. Effect of substrate temperature on properties of tin-doped indium oxide films deposited by activated electron beam evaporation 査読有り

    H. Kojima, N. Saito, O. Takai

    表面技術   63 巻 ( 3 ) 頁: 173-178   2012年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  393. Orientation Control of Textured SrTiO3 Thin Films on Platinized Al2O3 (0 0 0 1) by an Ion Beam Sputter Deposition Method 査読有り

    G. Panomsuwan, O. Takai, N. Saito

    Journal of Physics D: Applied Physics   45 巻 ( 49 ) 頁: 494003   2012年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  394. Rapid Sterilization of Escherichia coli by Solution Plasma Process 査読有り

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

    Japanese Journal of Applied Physics   51 巻 ( 12 ) 頁: 126-201   2012年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  395. Preparation of low molecular weight chitosan using solution plasma system 査読有り

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

    Carbohydrate Polymers   87 巻 ( 4 ) 頁: 2745-2749   2012年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  396. P-OS7-5 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(P-OS7 最先端材料が拓くマイクロ・ナノ工学の新展開,ポスターセッション論文)

    谷田 優也, Pootawang Panuphong, 齋藤 永宏

    マイクロ・ナノ工学シンポジウム   2012 巻 ( 0 ) 頁: 303 - 304   2012年

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本機械学会  

    The development of alternative catalyst with the economical production cost and high catalytic activity instead of Pt-based catalyst for fuel cells is good challenge. It is well known that Fe-N_4/C possesses the catalytic activity for oxygen reduction reaction, with high potential for utilization as cathode. Here, the Fe-N/C particles were synthesized using various precursors by solution plasma process (SPP). In this method, the selection of precursor can control the elemental composition of the synthesized Fe-N/C which affects to the catalytic activity. Pyridine, aniline, pyridine/aniline, and pyridine/triazine as the selected precursors were discharged to form N-carbon particles. In addition, the incorporation of Fe was achieved by the chemical complex of Fe ions. The synthesized Fe-C/N particles were characterized to confirm the elemental composition using elemental analysis. The structural analysis was done by XRD and TEM. Furthermore, the electrocatalytic activity was investigated using cyclic voltammetry under the O_2 and N_2 saturated conditions.

    DOI: 10.1299/jsmemnm.2012.4.303

  397. P-OS7-4 リチウムイオン伝導体の電子状態制御(P-OS7 最先端材料が拓くマイクロ・ナノ工学の新展開,ポスターセッション論文)

    澤 昂平, Bratescu Maria-Antoaneta, 齋藤 永宏

    マイクロ・ナノ工学シンポジウム   2012 巻 ( 0 ) 頁: 301 - 302   2012年

     詳細を見る

    掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本機械学会  

    Lithium ion conductor research is determined by an increased demand of energy and by the necessity to develop stable electricity devices for energy accumulation. Recently a great attention was focused on solid type lithium ion batteries which use an inorganic solid electrolyte material with excellent heat and chemical attract resistance. However, generally, the ionic conductivity of a solid electrolyte is low, and has not reached a practical used level. In recent years, the sulfide system solid electrolyte attracts much attention as a material which shows high ion conductivity. In particular, Li_<10>GeP_2S_<12> has been reported to show the highest ion conductivity of 12 mS/cm. The degree of lithium ion conduction in a solid originates in the crystal structure of the material. In this research, the study is made to replace various elements by an ion radius and an electron arrangement paying attention to the above-mentioned material, and the relation between the crystal structure change and the ion conductivity was investigated.

    DOI: 10.1299/jsmemnm.2012.4.301

  398. OS7-3-1 ソリューションプラズマによる材料合成(OS7 最先端材料が拓くマイクロ・ナノ工学の新展開(3))

    上野 智永, 齋藤 永宏

    マイクロ・ナノ工学シンポジウム   2012 巻 ( 0 ) 頁: 53 - 54   2012年

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本機械学会  

    We have focused a glow discharge in liquid, which is called solution plasma, as a novel material synthesis method. The high energy field, solution plasma, formed in liquid causes to various reactions and it makes possible to fabricate novel materials such as nanoclusters as well as carbon materials. Thus, it can modify surface of the powder such as carbon materials. Since nanoclusters show different properties from bulk material, novel catalyst may be found in nanoclusters. Carbon material is useful for battery electrode. Surface modified filler will be important for composite material. In this matter, solution plasma process has a big possibility as novel material synthesis.

    DOI: 10.1299/jsmemnm.2012.4.53

  399. Rapid Synthesis of ordered hexagonal mesoporous silica and their incorporation with Ag nanoparticles by solution plasma 査読有り

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

    Materials Resarch Bulletin   47 巻 ( 10 ) 頁: 2726-2729   2012年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  400. The Role of Activated Nitrogen Species on Double-folded Screen Nitriding Process 査読有り

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

    Journal of Physics: Conference Series   417 巻   頁: 012023   2012年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  401. Synthesis and characteristics of Ag/Pt bimetallic nanocomposites by arc-discharge solution plasma processing 査読有り

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

    Nanotechnology   23 巻 ( 39 ) 頁: 395-602   2012年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  402. Study on the Combustion Inhibition of Poly Phenylene Ether Alloy 査読有り

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

    Kobunshi Ronbunshu   69 巻 ( 6 ) 頁: 297-299   2012年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    その他リンク: http://orcid.org/0000-0001-8757-3933

  403. Rapid synthesis of ordered hexagonal mesoporous silica and their incorporation with Ag nanoparticles by solution plasma 査読有り

    Panuphong Pootawang, Nagahiro Saito, Osamu Takai, Sang Yul Lee

    Materials Research Bulletin   47 巻 ( 10 ) 頁: 2726-2729   2012年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  404. アークイオンプレーティング法によるITO膜の内部応力に及ぼす結晶化の影響 査読有り

    小島啓安, 齋藤永宏, 高井治

    表面技術   63 巻 ( 4 ) 頁: 272-274   2012年

     詳細を見る

    記述言語:日本語   掲載種別:研究論文(学術雑誌)  

  405. Effect of substrate temperature on properties of tin-doped indium oxide films deposited by activated electron beam evaporation 査読有り

    H. Kojima, N. Saito, O. Takai

    表面技術   63 巻 ( 3 ) 頁: 173-178   2012年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  406. High-rate reactive deposition of SiO2 films using a new DC rotary sputtering cathode 査読有り

    H. Kojima, N. Saito, O. Takai

    表面技術   63 巻 ( 3 ) 頁: 179-183   2012年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  407. High sensitive detection of volatile organic compounds using superhydrophobic quartz crystal microbalance 査読有り

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

    Sensors and Actuators B: Chemical   164 巻 ( 1 ) 頁: 15-21   2012年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  408. Growth and characterization of highly c-axis textured SrTiO3 thin films directly grown on Si(001) substrates by ion beam sputter deposition 査読有り

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

    Crystal Research and Technology   47 巻 ( 2 ) 頁: 187-194   2012年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  409. Fabrication and characterization of epitaxial SrTiO3/Nb-doped SrTiO3 superlattices by double ECR ion beam sputter deposition 査読有り

    G. Panomsuwan, O. Takai, N. Saito

    Vacuum   89 巻   頁: 35-39   2012年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  410. Enhanced memory window of Au/BaTiO3/SrTiO3/Si(001) MFIS structure with high c-axis orientation for non-volatile memory applications 査読有り

    G. Panomsuwan, O. Takai, N. Saito

    Applied Physics A   108 巻 ( 2 ) 頁: 337-342   2012年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  411. Effect of substrate temperature on properties of tin-doped indium oxide films deposited by activated electron beam evaporation 査読有り

    H. Kojima, N. Saito, O. Takai

    表面技術   63 巻 ( 3 ) 頁: 173-178   2012年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  412. Orientation Control of Textured SrTiO3 Thin Films on Platinized Al2O3 (0 0 0 1) by an Ion Beam Sputter Deposition Method 査読有り

    G. Panomsuwan, O. Takai, N. Saito

    Journal of Physics D: Applied Physics   45 巻 ( 49 ) 頁: 494003   2012年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  413. Rapid synthesis of ordered hexagonal mesoporous silica and their incorporation with Ag nanoparticles by solution plasma 査読有り

    Panuphong Pootawang, Nagahiro Saito, Osamu Takai, Sang Yul Lee

    Materials Research Bulletin   47 巻 ( 10 ) 頁: 2726-2729   2012年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  414. Rapid Synthesis of ordered hexagonal mesoporous silica and their incorporation with Ag nanoparticles by solution plasma 査読有り

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

    Materials Resarch Bulletin   47 巻 ( 10 ) 頁: 2726-2729   2012年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  415. Rapid Sterilization of Escherichia coli by Solution Plasma Process 査読有り

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

    Japanese Journal of Applied Physics   51 巻 ( 12 ) 頁: 126-201   2012年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  416. P-OS7-5 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(P-OS7 最先端材料が拓くマイクロ・ナノ工学の新展開,ポスターセッション論文)

    谷田 優也, Pootawang Panuphong, 齋藤 永宏

    マイクロ・ナノ工学シンポジウム   2012 巻 ( 0 ) 頁: 303 - 304   2012年

     詳細を見る

    掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本機械学会  

    The development of alternative catalyst with the economical production cost and high catalytic activity instead of Pt-based catalyst for fuel cells is good challenge. It is well known that Fe-N_4/C possesses the catalytic activity for oxygen reduction reaction, with high potential for utilization as cathode. Here, the Fe-N/C particles were synthesized using various precursors by solution plasma process (SPP). In this method, the selection of precursor can control the elemental composition of the synthesized Fe-N/C which affects to the catalytic activity. Pyridine, aniline, pyridine/aniline, and pyridine/triazine as the selected precursors were discharged to form N-carbon particles. In addition, the incorporation of Fe was achieved by the chemical complex of Fe ions. The synthesized Fe-C/N particles were characterized to confirm the elemental composition using elemental analysis. The structural analysis was done by XRD and TEM. Furthermore, the electrocatalytic activity was investigated using cyclic voltammetry under the O_2 and N_2 saturated conditions.

    DOI: 10.1299/jsmemnm.2012.4.303

  417. P-OS7-4 リチウムイオン伝導体の電子状態制御(P-OS7 最先端材料が拓くマイクロ・ナノ工学の新展開,ポスターセッション論文)

    澤 昂平, Bratescu Maria-Antoaneta, 齋藤 永宏

    マイクロ・ナノ工学シンポジウム   2012 巻 ( 0 ) 頁: 301 - 302   2012年

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本機械学会  

    Lithium ion conductor research is determined by an increased demand of energy and by the necessity to develop stable electricity devices for energy accumulation. Recently a great attention was focused on solid type lithium ion batteries which use an inorganic solid electrolyte material with excellent heat and chemical attract resistance. However, generally, the ionic conductivity of a solid electrolyte is low, and has not reached a practical used level. In recent years, the sulfide system solid electrolyte attracts much attention as a material which shows high ion conductivity. In particular, Li_<10>GeP_2S_<12> has been reported to show the highest ion conductivity of 12 mS/cm. The degree of lithium ion conduction in a solid originates in the crystal structure of the material. In this research, the study is made to replace various elements by an ion radius and an electron arrangement paying attention to the above-mentioned material, and the relation between the crystal structure change and the ion conductivity was investigated.

    DOI: 10.1299/jsmemnm.2012.4.301

  418. OS7-3-1 ソリューションプラズマによる材料合成(OS7 最先端材料が拓くマイクロ・ナノ工学の新展開(3))

    上野 智永, 齋藤 永宏

    マイクロ・ナノ工学シンポジウム   2012 巻 ( 0 ) 頁: 53 - 54   2012年

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本機械学会  

    We have focused a glow discharge in liquid, which is called solution plasma, as a novel material synthesis method. The high energy field, solution plasma, formed in liquid causes to various reactions and it makes possible to fabricate novel materials such as nanoclusters as well as carbon materials. Thus, it can modify surface of the powder such as carbon materials. Since nanoclusters show different properties from bulk material, novel catalyst may be found in nanoclusters. Carbon material is useful for battery electrode. Surface modified filler will be important for composite material. In this matter, solution plasma process has a big possibility as novel material synthesis.

    DOI: 10.1299/jsmemnm.2012.4.53

  419. Study on the Combustion Inhibition of Poly Phenylene Ether Alloy 査読有り

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

    Kobunshi Ronbunshu   69 巻 ( 6 ) 頁: 297-299   2012年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    その他リンク: http://orcid.org/0000-0001-8757-3933

  420. アークイオンプレーティング法によるITO膜の内部応力に及ぼす結晶化の影響 査読有り

    小島啓安, 齋藤永宏, 高井治

    表面技術   63 巻 ( 4 ) 頁: 272-274   2012年

     詳細を見る

    記述言語:日本語   掲載種別:研究論文(学術雑誌)  

  421. The Role of Activated Nitrogen Species on Double-folded Screen Nitriding Process 査読有り

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

    Journal of Physics: Conference Series   417 巻   頁: 012023   2012年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  422. Synthesis and characteristics of Ag/Pt bimetallic nanocomposites by arc-discharge solution plasma processing 査読有り

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

    Nanotechnology   23 巻 ( 39 ) 頁: 395-602   2012年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  423. Treatment of Non-point Sources by a Thermal Plasma System under DC Partial Transferred Mode

    Li OL, Guo Y, Chang JS, Urashima K, Saito N

    International Journal of Plasma Environmental Science and Technology   06 巻 ( 01 ) 頁: 63 - 67   2012年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:The Institute of Electrostatics Japan  

    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 (SiO2) and calcite (CaCO3)) decreased while other compositions such as KAlSi3O8, Fe3O4, NaCl and CaSO4 were formed. The accumulated concentrations of CxHy, CO, CO2, NO, NO2, H2S and SO2 after a two-hour thermal plasma treatment were 6100, 10000, 6200, 9700, 140, 40 and 27 ppm, respectively.

    DOI: 10.34343/ijpest.2012.06.01.063

    CiNii Research

  424. Treatment of Non-point Sources by a Thermal Plasma System under DC Partial Transferred Mode

    Li OL, Guo Y, Chang JS, Urashima K, Saito N

    International Journal of Plasma Environmental Science and Technology   06 巻 ( 01 ) 頁: 63 - 67   2012年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:The Institute of Electrostatics Japan  

    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 (SiO2) and calcite (CaCO3)) decreased while other compositions such as KAlSi3O8, Fe3O4, NaCl and CaSO4 were formed. The accumulated concentrations of CxHy, CO, CO2, NO, NO2, H2S and SO2 after a two-hour thermal plasma treatment were 6100, 10000, 6200, 9700, 140, 40 and 27 ppm, respectively.

    DOI: 10.34343/ijpest.2012.06.01.63

    CiNii Research

  425. Size-Controlled Gold Nanoparticles Synthesized in Solution Plasma 査読有り

    Bratescu Maria Antoaneta, Cho Sung-Pyo, Takai Osamu, Saito Nagahiro

    JOURNAL OF PHYSICAL CHEMISTRY C   115 巻 ( 50 ) 頁: 24569 - 24576   2011年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1021/jp207447c

    Web of Science

  426. Wettability characterization of transparent MgF2 nanoparticle coatings with SiO2 binder covered with fluoroalkylsilane self-assembled monolayers 査読有り

    Murata Tsuyoshi, Hieda Junko, Saito Nagahiro, Takai Osamu

    JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY   60 巻 ( 2 ) 頁: 125 - 130   2011年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1007/s10971-011-2566-9

    Web of Science

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

    Miron C., Bratescu M. A., Saito N., Takai O.

    CURRENT APPLIED PHYSICS   11 巻 ( 5 ) 頁: S154 - S158   2011年9月

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    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1016/j.cap.2011.04.005

    Web of Science

  428. Redox reactions in liquid plasma during iron oxide and oxide-hydroxide nanoparticles synthesis

    Bratescu M. A., Saito N., Takai O.

    CURRENT APPLIED PHYSICS   11 巻 ( 5 ) 頁: S30 - S34   2011年9月

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    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1016/j.cap.2011.06.007

    Web of Science

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

    Miron C., Bratescu M. A., Saito N., Takai O.

    CURRENT APPLIED PHYSICS   11 巻 ( 5 ) 頁: S154 - S158   2011年9月

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    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1016/j.cap.2011.04.005

    Web of Science

  430. Redox reactions in liquid plasma during iron oxide and oxide-hydroxide nanoparticles synthesis

    Bratescu M. A., Saito N., Takai O.

    CURRENT APPLIED PHYSICS   11 巻 ( 5 ) 頁: S30 - S34   2011年9月

     詳細を見る

    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1016/j.cap.2011.06.007

    Web of Science

  431. ソリューションプラズマによる金ナノ粒子担持花弁状シリカの合成

    山本 泰望, 田辺 郁, 高井 治, 齋藤 永宏

    表面技術 = The journal of the Surface Finishing Society of Japan   62 巻 ( 8 ) 頁: 413 - 415   2011年8月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 表面技術協会  

    DOI: 10.4139/sfj.62.413

  432. Solution plasma for template removal in mesoporous silica: pH and discharge time varying characteristics

    Pootawang Panuphong, Saito Nagahiro, Takai Osamu

    THIN SOLID FILMS   519 巻 ( 20 ) 頁: 7030 - 7035   2011年8月

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    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1016/j.tsf.2011.01.213

    Web of Science

  433. Solution plasma for template removal in mesoporous silica: pH and discharge time varying characteristics

    Pootawang Panuphong, Saito Nagahiro, Takai Osamu

    THIN SOLID FILMS   519 巻 ( 20 ) 頁: 7030 - 7035   2011年8月

     詳細を見る

    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1016/j.tsf.2011.01.213

    Web of Science

  434. Adhesion property of SiOx-doped Diamond-like Carbon Films Deposited on Polycarbonate by Inductively Coupled Plasma Chemical Vapor Deposition

    Baek Sang-min, Shirafuji Tatsuru, Saito Nagahiro, Takai Osamu

    THIN SOLID FILMS   519 巻 ( 20 ) 頁: 6678 - 6682   2011年8月

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    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1016/j.tsf.2011.04.080

    Web of Science

  435. Wettability of MgF2 porous nanoparticle layers covered with fluoroalkylsilane self-assembled monolayer

    Murata Tsuyoshi, Hieda Junko, Saito Nagahiro, Takai Osamu

    JOURNAL OF THE CERAMIC SOCIETY OF JAPAN   119 巻 ( 1391 ) 頁: 591 - 594   2011年7月

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:公益社団法人 日本セラミックス協会  

    MgF<sub>2</sub> porous nanoparticle coatings with SiO<sub>2</sub> binder were formed on glass substrates by solgel method. The samples were exposed to fluoro-alkyl silane (FAS) vapor and heated at 150&deg;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 surface roughness. In the autoclave temperature region of 100&ndash;180&deg;C, the higher the autoclave temperature was, the larger the surface roughness was. The sample prepared from the 100&deg;C autoclaved sol had the minimum surface roughness of 4.1 nm and showed the minimum static contact angle of 115&deg;. On the other hand, the sample prepared from the 180&deg;C autoclaved sol had the maximum surface roughness of 9.5 nm and showed the maximum static contact angle of 134&deg;.

    DOI: 10.2109/jcersj2.119.591

    Web of Science

  436. Wettability of MgF2 porous nanoparticle layers covered with fluoroalkylsilane self-assembled monolayer

    Murata Tsuyoshi, Hieda Junko, Saito Nagahiro, Takai Osamu

    JOURNAL OF THE CERAMIC SOCIETY OF JAPAN   119 巻 ( 1391 ) 頁: 591 - 594   2011年7月

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:公益社団法人 日本セラミックス協会  

    MgF<sub>2</sub> porous nanoparticle coatings with SiO<sub>2</sub> binder were formed on glass substrates by solgel method. The samples were exposed to fluoro-alkyl silane (FAS) vapor and heated at 150&deg;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 surface roughness. In the autoclave temperature region of 100&ndash;180&deg;C, the higher the autoclave temperature was, the larger the surface roughness was. The sample prepared from the 100&deg;C autoclaved sol had the minimum surface roughness of 4.1 nm and showed the minimum static contact angle of 115&deg;. On the other hand, the sample prepared from the 180&deg;C autoclaved sol had the maximum surface roughness of 9.5 nm and showed the maximum static contact angle of 134&deg;.

    DOI: 10.2109/jcersj2.119.591

    Web of Science

  437. 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   109 巻 ( 12 )   2011年6月

     詳細を見る

    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1063/1.3597790

    Web of Science

  438. 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   109 巻 ( 12 )   2011年6月

     詳細を見る

    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1063/1.3597790

    Web of Science

  439. Analysis of organic pollutant degradation in pulsed plasma by coherent anti-Stokes Raman spectroscopy 査読有り

    Bratescu Maria Antoneta, Hieda Junko, Umemura Tomonari, Saito Nagahiro, Takai Osamu

    JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A   29 巻 ( 3 ) 頁: -   2011年5月

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    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1116/1.3569035

    Web of Science

  440. Ag nanoparticle incorporation in mesoporous silica synthesized by solution plasma and their catalysis for oleic acid hydrogenation 査読有り

    Pootawang Panuphong, Saito Nagahiro, Takai Osamu

    MATERIALS LETTERS   65 巻 ( 6 ) 頁: 1037 - 1040   2011年3月

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    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1016/j.matlet.2011.01.009

    Web of Science

  441. WANTS-NEEDS-SEEDS 植物由来の普通紙にはっ水性と抗菌性を付与する処理技術の開発

    石崎 貴裕, 齋藤 永宏, 高井 治

    未来材料   11 巻 ( 2 ) 頁: 52-54   2011年2月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)  

  442. Adhesion property of SiO(x)-doped Diamond-like Carbon Films Deposited on Polycarbonate by Inductively Coupled Plasma Chemical Vapor Deposition 査読有り

    S. M. Baek, T. Shirafuji,N. Saito, O. Takai.

    Thin Solid Films   519 巻 ( 20 ) 頁: 6678-6682   2011年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  443. Fabrication of Transparent Protective Diamond-Like Carbon Films on Polymer 査読有り

    S. M. Baek,T. Shirafuji,N. Saito, O. Takai

    Japanese Journal of Applied Physics   50 巻 ( 8 ) 頁: 08JD08-08JD08-5   2011年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  444. Generation of plasmas in water: utilization of a high-frequency, low-voltage bipolar pulse power supply with impedance control 査読有り

    P. Baroch, P. Potochy,N.Saito

    Plasma Sources Sci. Technol.   20 巻   頁: 034017   2011年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  445. Size-Controlled Gold Nanoparticles Synthesized in Solution Plasma 査読有り

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

    The Journal of Physical Chemistry C   115 巻 ( 50 ) 頁: 24569-24576   2011年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  446. Redox reactions in liquid plasma during iron oxide and oxide-hydroxide nanoparticles synthesis 査読有り

    M. A. Bratescu,N. Saito, O.Takai.

    Current Applied Physics   11 巻 ( 5 ) 頁: S30-S34   2011年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  447. Microstructural characterization of gold nanoparticles synthesized by solution plasma processing 査読有り

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

    Nanotechnology   22 巻 ( 45 ) 頁: 455701   2011年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  448. Rapid Synthesis and Structural Characterization of Well-Defined Gold Clusters by Solution Plasma Sputtering 査読有り

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

    Crystal Growth & Design   12 巻 ( 1 ) 頁: 119-123   2011年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  449. Low-Temperature Fabrication of Bunch-Shaped ZnO Nanowires Using a Sodium Hydroxide Aqueous Solution 査読有り

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

    Journal of Nanoscience and Nanotechnology   11 巻 ( 12 ) 頁: 10935-10939   2011年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  450. Effect of the electrode work function on the water plasma breakdown voltage 査読有り

    C. Miron, M. A. Bratescu, N. Saito,O. Takai

    Current Applied Physics   11 巻 ( 5 ) 頁: S154-S158   2011年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  451. Optical diagnostic of bipolar electrical discharges in HCl, KCl, and KOH solutions 査読有り

    C. Miron,M. A. Bratescu, N. Saito,O. Takai

    Journal of Applied Physics   109 巻 ( 12 ) 頁: 123301   2011年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  452. Wettability characterization of transparent MgF(2) nanoparticle coatings with SiO(2) binder covered with fluoroalkylsilane self-assembled monolayers 査読有り

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

    Journal of Sol-Gel Science and Technology   60 巻 ( 2 ) 頁: 125-130   2011年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  453. Wettability of MgF(2) porous nanoparticle layers covered with fluoroalkylsilane self-assembled monolayer 査読有り

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

    Journal of the Ceramic Society of Japan   119 巻 ( 1391 ) 頁: 591-594   2011年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  454. Structural Properties and Microstructures of SrTiO3/SrTi1-xNbxO3 Superlattices Grown by Ion Beam Deposition 査読有り

    G. Panomsuwan, N. Saito, O. Takai

    Materials Science Forum   695 巻   頁: 598-601   2011年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  455. Solution plasma for template removal in mesoporous silica: pH and discharge time varying characteristics 査読有り

    P. Pootawang,N. Saito, O. Takai

    Thin Solid Films   519 巻 ( 20 ) 頁: 7030-7035   2011年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  456. ソリューションプラズマによる花弁状シリカの合成 査読有り

    山本泰望, 田辺郁, 高井治, 齋藤永宏

    表面技術   62 巻 ( 8 ) 頁: 413-415   2011年

     詳細を見る

    記述言語:日本語   掲載種別:研究論文(学術雑誌)  

  457. Ag Nanoparticles Incorporation in Mesoporous Silica Synthesized by Solution Plasma and their Catalysis for Oleic Acid Hydrogenation

    P. Pootawang, N. Saito, O. Takai

    Materials Letters   65 巻   頁: 1037-1040]   2011年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  458. Fabrication of Vertically Aligned Diamond Whiskers from Highly Boron-Doped Diamond by Oxygen Plasma Etching

    C. Terashima, K. Arihara, S. Okazaki, T. Shichi, D.A. Tryk, T. Shirafuji, N. Saito, O. Takai, A. Fujishima

    ACS Applied Materials & Interfaces   3 巻   頁: 177-182   2011年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  459. Ag Nanoparticles Incorporation in Mesoporous Silica Synthesized by Solution Plasma and their Catalysis for Oleic Acid Hydrogenation

    P. Pootawang, N. Saito, O. Takai

    Materials Letters   65 巻   頁: 1037-1040]   2011年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  460. Adhesion property of SiO(x)-doped Diamond-like Carbon Films Deposited on Polycarbonate by Inductively Coupled Plasma Chemical Vapor Deposition 査読有り

    S. M. Baek, T. Shirafuji, N. Saito, O. Takai

    Thin Solid Films   519 巻 ( 20 ) 頁: 6678-6682   2011年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  461. Creating Biointerface on Polymer by Plasma-Initiated Graft Polymerization

    Andreeva Nina, Ishizaki Takahiro, Baroch Pavel, Saito Nagahiro

    Transactions of the Materials Research Society of Japan   36 巻 ( 4 ) 頁: 549 - 552   2011年

     詳細を見る

    掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本MRS  

    Hydrophilic modification of polyethylene terephthalate (PET) was successfully demonstrated by surface wave plasma treatment followed by graft polymerization with various monomers such as acrylic acid (AA), (2-hydroxyethyl) methacrylate (HEMA), and styrene (St) in the vapor phase. The plasma treatment did not physically damage the PET surface. The graft reactions were confirmed by water contact angle measurements and X-ray photoelectron spectroscopy (XPS). The water contact angles of the PET surface modified with hydrophilic AA and HEMA monomers decreased from approximately 80° before treatment to less than 35°, and the hydrophilicity of the PET surface modified by hydrophilic AA and HEMA monomers was maintained for 70 h. 3T3 fibroblast cells were cultured on the modified PET surfaces to investigate the bioactivity of the modified PET surfaces.

    DOI: 10.14723/tmrsj.36.549

  462. Generation of plasmas in water: utilization of a high-frequency, low-voltage bipolar pulse power supply with impedance control 査読有り

    P. Baroch, P. Potochy, N.Saito

    Plasma Sources Sci. Technol.   20 巻   頁: 034017   2011年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  463. Fabrication of Vertically Aligned Diamond Whiskers from Highly Boron-Doped Diamond by Oxygen Plasma Etching

    C. Terashima, K. Arihara, S. Okazaki, T. Shichi, D.A. Tryk, T. Shirafuji, N. Saito, O. Takai, A. Fujishima

    ACS Applied Materials & Interfaces   3 巻   頁: 177-182   2011年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  464. Fabrication of Transparent Protective Diamond-Like Carbon Films on Polymer 査読有り

    S. M. Baek, T. Shirafuji, N. Saito, O. Takai

    Japanese Journal of Applied Physics   50 巻 ( 8 ) 頁: 08JD08-08JD08-5   2011年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  465. Effect of the electrode work function on the water plasma breakdown voltage 査読有り

    C. Miron, M. A. Bratescu, N. Saito, O. Takai

    Current Applied Physics   11 巻 ( 5 ) 頁: S154-S158   2011年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  466. Low-Temperature Fabrication of Bunch-Shaped ZnO Nanowires Using a Sodium Hydroxide Aqueous Solution 査読有り

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

    Journal of Nanoscience and Nanotechnology   11 巻 ( 12 ) 頁: 10935-10939   2011年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  467. Optical diagnostic of bipolar electrical discharges in HCl, KCl, and KOH solutions 査読有り

    C. Miron, M. A. Bratescu, N. Saito, O. Takai

    Journal of Applied Physics   109 巻 ( 12 ) 頁: 123301   2011年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  468. Microstructural characterization of gold nanoparticles synthesized by solution plasma processing 査読有り

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

    Nanotechnology   22 巻 ( 45 ) 頁: 455701   2011年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  469. Rapid Synthesis and Structural Characterization of Well-Defined Gold Clusters by Solution Plasma Sputtering 査読有り

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

    Crystal Growth & Design   12 巻 ( 1 ) 頁: 119-123   2011年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  470. Structural Properties and Microstructures of SrTiO3/SrTi1-xNbxO3 Superlattices Grown by Ion Beam Deposition 査読有り

    G. Panomsuwan, N. Saito, O. Takai

    Materials Science Forum   695 巻   頁: 598-601   2011年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  471. Solution plasma for template removal in mesoporous silica: pH and discharge time varying characteristics 査読有り

    P. Pootawang, N. Saito, O. Takai

    Thin Solid Films   519 巻 ( 20 ) 頁: 7030-7035   2011年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  472. Size-Controlled Gold Nanoparticles Synthesized in Solution Plasma 査読有り

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

    The Journal of Physical Chemistry C   115 巻 ( 50 ) 頁: 24569-24576   2011年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  473. Regulatory mechanisms of Rac activation by RhoGDI

    Ueyama Takehiko, Son Jeonghyun, Kobayashi Takeshi, Saito Naoaki

    JOURNAL OF PHARMACOLOGICAL SCIENCES   115 巻   頁: 29P - 29P   2011年

     詳細を見る

    掲載種別:研究論文(学術雑誌)  

    Web of Science

  474. Redox reactions in liquid plasma during iron oxide and oxide-hydroxide nanoparticles synthesis 査読有り

    M. A. Bratescu, N. Saito, O.Takai

    Current Applied Physics   11 巻 ( 5 ) 頁: S30-S34   2011年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  475. Wettability characterization of transparent MgF(2) nanoparticle coatings with SiO(2) binder covered with fluoroalkylsilane self-assembled monolayers 査読有り

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

    Journal of Sol-Gel Science and Technology   60 巻 ( 2 ) 頁: 125-130   2011年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  476. Creating Biointerface on Polymer by Plasma-Initiated Graft Polymerization

    Andreeva Nina, Ishizaki Takahiro, Baroch Pavel, Saito Nagahiro

    Transactions of the Materials Research Society of Japan   36 巻 ( 4 ) 頁: 549 - 552   2011年

     詳細を見る

    掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本MRS  

    Hydrophilic modification of polyethylene terephthalate (PET) was successfully demonstrated by surface wave plasma treatment followed by graft polymerization with various monomers such as acrylic acid (AA), (2-hydroxyethyl) methacrylate (HEMA), and styrene (St) in the vapor phase. The plasma treatment did not physically damage the PET surface. The graft reactions were confirmed by water contact angle measurements and X-ray photoelectron spectroscopy (XPS). The water contact angles of the PET surface modified with hydrophilic AA and HEMA monomers decreased from approximately 80° before treatment to less than 35°, and the hydrophilicity of the PET surface modified by hydrophilic AA and HEMA monomers was maintained for 70 h. 3T3 fibroblast cells were cultured on the modified PET surfaces to investigate the bioactivity of the modified PET surfaces.

    DOI: 10.14723/tmrsj.36.549

  477. Ag Nanoparticles Incorporation in Mesoporous Silica Synthesized by Solution Plasma and their Catalysis for Oleic Acid Hydrogenation

    P. Pootawang, N. Saito, O. Takai

    Materials Letters   65 巻   頁: 1037-1040]   2011年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  478. Adhesion property of SiO(x)-doped Diamond-like Carbon Films Deposited on Polycarbonate by Inductively Coupled Plasma Chemical Vapor Deposition 査読有り

    S. M. Baek, T. Shirafuji, N. Saito, O. Takai

    Thin Solid Films   519 巻 ( 20 ) 頁: 6678-6682   2011年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  479. ソリューションプラズマによる花弁状シリカの合成 査読有り

    山本泰望, 田辺郁, 高井治, 齋藤永宏

    表面技術   62 巻 ( 8 ) 頁: 413-415   2011年

     詳細を見る

    記述言語:日本語   掲載種別:研究論文(学術雑誌)  

  480. Wettability of MgF(2) porous nanoparticle layers covered with fluoroalkylsilane self-assembled monolayer 査読有り

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

    Journal of the Ceramic Society of Japan   119 巻 ( 1391 ) 頁: 591-594   2011年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  481. Effect of the electrode work function on the water plasma breakdown voltage 査読有り

    C. Miron, M. A. Bratescu, N. Saito, O. Takai

    Current Applied Physics   11 巻 ( 5 ) 頁: S154-S158   2011年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  482. Low-Temperature Fabrication of Bunch-Shaped ZnO Nanowires Using a Sodium Hydroxide Aqueous Solution 査読有り

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

    Journal of Nanoscience and Nanotechnology   11 巻 ( 12 ) 頁: 10935-10939   2011年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  483. Generation of plasmas in water: utilization of a high-frequency, low-voltage bipolar pulse power supply with impedance control 査読有り

    P. Baroch, P. Potochy, N.Saito

    Plasma Sources Sci. Technol.   20 巻   頁: 034017   2011年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  484. Fabrication of Vertically Aligned Diamond Whiskers from Highly Boron-Doped Diamond by Oxygen Plasma Etching

    C. Terashima, K. Arihara, S. Okazaki, T. Shichi, D.A. Tryk, T. Shirafuji, N. Saito, O. Takai, A. Fujishima

    ACS Applied Materials & Interfaces   3 巻   頁: 177-182   2011年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  485. Fabrication of Transparent Protective Diamond-Like Carbon Films on Polymer 査読有り

    S. M. Baek, T. Shirafuji, N. Saito, O. Takai

    Japanese Journal of Applied Physics   50 巻 ( 8 ) 頁: 08JD08-08JD08-5   2011年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  486. Microstructural characterization of gold nanoparticles synthesized by solution plasma processing 査読有り

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

    Nanotechnology   22 巻 ( 45 ) 頁: 455701   2011年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  487. Solution plasma for template removal in mesoporous silica: pH and discharge time varying characteristics 査読有り

    P. Pootawang, N. Saito, O. Takai

    Thin Solid Films   519 巻 ( 20 ) 頁: 7030-7035   2011年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  488. Size-Controlled Gold Nanoparticles Synthesized in Solution Plasma 査読有り

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

    The Journal of Physical Chemistry C   115 巻 ( 50 ) 頁: 24569-24576   2011年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  489. Regulatory mechanisms of Rac activation by RhoGDI

    Ueyama Takehiko, Son Jeonghyun, Kobayashi Takeshi, Saito Naoaki

    JOURNAL OF PHARMACOLOGICAL SCIENCES   115 巻   頁: 29P - 29P   2011年

     詳細を見る

    掲載種別:研究論文(学術雑誌)  

    Web of Science

  490. Redox reactions in liquid plasma during iron oxide and oxide-hydroxide nanoparticles synthesis 査読有り

    M. A. Bratescu, N. Saito, O.Takai

    Current Applied Physics   11 巻 ( 5 ) 頁: S30-S34   2011年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  491. Rapid Synthesis and Structural Characterization of Well-Defined Gold Clusters by Solution Plasma Sputtering 査読有り

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

    Crystal Growth & Design   12 巻 ( 1 ) 頁: 119-123   2011年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  492. Optical diagnostic of bipolar electrical discharges in HCl, KCl, and KOH solutions 査読有り

    C. Miron, M. A. Bratescu, N. Saito, O. Takai

    Journal of Applied Physics   109 巻 ( 12 ) 頁: 123301   2011年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  493. Structural Properties and Microstructures of SrTiO3/SrTi1-xNbxO3 Superlattices Grown by Ion Beam Deposition 査読有り

    G. Panomsuwan, N. Saito, O. Takai

    Materials Science Forum   695 巻   頁: 598-601   2011年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  494. ソリューションプラズマによる花弁状シリカの合成 査読有り

    山本泰望, 田辺郁, 高井治, 齋藤永宏

    表面技術   62 巻 ( 8 ) 頁: 413-415   2011年

     詳細を見る

    記述言語:日本語   掲載種別:研究論文(学術雑誌)  

  495. Wettability of MgF(2) porous nanoparticle layers covered with fluoroalkylsilane self-assembled monolayer 査読有り

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

    Journal of the Ceramic Society of Japan   119 巻 ( 1391 ) 頁: 591-594   2011年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  496. Wettability characterization of transparent MgF(2) nanoparticle coatings with SiO(2) binder covered with fluoroalkylsilane self-assembled monolayers 査読有り

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

    Journal of Sol-Gel Science and Technology   60 巻 ( 2 ) 頁: 125-130   2011年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  497. Attenuated total reflectance spectroscopy of coumarin organosilane molecules adsorbed on a fused silica surface

    Bratescu Maria Antoaneta, Saito Nagahiro, Takai Osamu

    APPLIED SURFACE SCIENCE   257 巻 ( 5 ) 頁: 1792 - 1799   2010年12月

     詳細を見る

    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1016/j.apsusc.2010.09.019

    Web of Science

  498. Attenuated total reflectance spectroscopy of coumarin organosilane molecules adsorbed on a fused silica surface

    Bratescu Maria Antoaneta, Saito Nagahiro, Takai Osamu

    APPLIED SURFACE SCIENCE   257 巻 ( 5 ) 頁: 1792 - 1799   2010年12月

     詳細を見る

    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1016/j.apsusc.2010.09.019

    Web of Science

  499. ソリューションプラズマによる水中菌の殺菌

    石崎 貴裕, 齋藤 永宏, 高井 治

    防菌防黴 = Journal of antibacterial and antifungal agents   38 巻 ( 11 ) 頁: 763 - 768   2010年11月

     詳細を見る

    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:日本防菌防黴学会  

  500. ソリューションプラズマによるナノ粒子の合成と表面機能化 査読有り

    稗田 純子, 白藤 立, 齋藤 永宏

    化学工業   61 巻 ( 10 ) 頁: 802-806   2010年10月

     詳細を見る

    記述言語:日本語   掲載種別:研究論文(学術雑誌)  

  501. Time-resolved Optical Emission Spectroscopy in Water Electrical Discharges

    Miron C., Bratescu M. A., Saito N., Takai O.

    PLASMA CHEMISTRY AND PLASMA PROCESSING   30 巻 ( 5 ) 頁: 619 - 631   2010年10月

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    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1007/s11090-010-9248-1

    Web of Science

  502. Oxygen Gas Barrier Properties of Hydrogenated Amorphous Carbon Thin Films Deposited with a Pulse-Biased Inductively Coupled Plasma Chemical Vapor Deposition Method

    Baek Sang-min, Shirafuji Tatsuru, Cho Sung-pyo, Saito Nagahiro, Takai Osamu

    JAPANESE JOURNAL OF APPLIED PHYSICS   49 巻 ( 8 )   2010年8月

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    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1143/JJAP.49.08JF10

    Web of Science

  503. Oxygen Gas Barrier Properties of Hydrogenated Amorphous Carbon Thin Films Deposited with a Pulse-Biased Inductively Coupled Plasma Chemical Vapor Deposition Method

    Baek Sang-min, Shirafuji Tatsuru, Cho Sung-pyo, Saito Nagahiro, Takai Osamu

    JAPANESE JOURNAL OF APPLIED PHYSICS   49 巻 ( 8 )   2010年8月

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    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1143/JJAP.49.08JF10

    Web of Science

  504. 超はっ水表面の作製法とその応用

    高井 治, 石崎 貴裕, 齋藤 永宏

    トライボロジスト   55 巻 ( 4 ) 頁: 254 - 259   2010年4月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:日本トライボロジー学会  

  505. TonEBP regulates hyperosmolality-induced arginine vasotocin gene expression in the chick (Gallus domesticus)

    Saito Noboru, Fujii Mariko, Sugiura Kanae, Aste Nicoletta, Shimada Kiyoshi

    NEUROSCIENCE LETTERS   468 巻 ( 3 ) 頁: 334 - 338   2010年1月

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    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1016/j.neulet.2009.11.027

    Web of Science

  506. TonEBP regulates hyperosmolality-induced arginine vasotocin gene expression in the chick (Gallus domesticus)

    Saito Noboru, Fujii Mariko, Sugiura Kanae, Aste Nicoletta, Shimada Kiyoshi

    NEUROSCIENCE LETTERS   468 巻 ( 3 ) 頁: 334 - 338   2010年1月

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    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1016/j.neulet.2009.11.027

    Web of Science

  507. プラズマ滅菌に於けるプラズマ源の装置と特徴について 査読有り

    白藤 立, 齋藤 永宏, 高井 治

    防菌防黴学会誌   38 巻 ( 10 ) 頁: 679 - 685   2010年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:日本防菌防黴学会  

    CiNii Research

  508. FTIR Study of Methylene Blue Plasma Degradation Products through Plasma Treatment on Water 査読有り

    Shirafuji T, Hieda J, Takai O, Saito N, Morita T, Sakai O, Tachibana K.

    Tencon 2010: 2010 Ieee Region 10 Conference     頁: 1938-1942   2010年

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    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1109/tencon.2010.5686449

  509. Fabrication and Application of Super-Hydrophobic Surface 査読有り

    Takai O, Ishizaki T, Saito N.

    Journal of Japanese Society of Tribologists   55 巻 ( 4 ) 頁: 254-259   2010年

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    掲載種別:研究論文(学術雑誌)  

  510. Analysis of Organic Pollutant Degradation in Pulsed Plasma by Coherent Anti-Stokes Raman Spectroscopy

    M.A. Bratescu, J. Hieda, T. Umemura, N. Saito, O. Takai

    Journal of Vacuum Science and Technology A   29 巻   頁: (3)   2010年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  511. Solution Plasma Process for Template Removal in Mesoporous Silica Synthesis

    P. Pootawang, N. Saito, O. Takai

    Japanese Journal of Applied Physics   49 巻   頁: 126202   2010年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  512. Attenuated total reflectance spectroscopy of coumarin organosilane molecules adsorbed on a fused silica surface

    M.A. Bratescu, N. Saito, O. Takai

    Appl. Surf. Sci.   257 巻   頁: 1792-1799   2010年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  513. Corrosion resistance and chemical stability of super-hydrophobic film deposited on magnesium alloy AZ31 by microwave plasma-enhanced chemical vapor deposition

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

    Electrochim. Acta   55 巻   頁: 7094-7101   2010年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  514. Oxygen Gas Barrier Properties of Hydrogenated Amorphous Carbon Thin Films Deposited with a Pulse-Biased Inductively Coupled Plasma Chemical Vapor Deposition Method

    S. Baek, T. Shirafiji, S. Cho, N. Saito, O. Takai

    Japanese Journal of Applied Physics   49 巻   頁: 08JF10-1-08JF10-6   2010年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  515. Effect of increasing hardness on Si-containing diamond-like carbon film during tribo -test

    S. G. Kim, S. W. Kim, N. Saito, O. Takai

    Diamond&Related Materials   19 巻   頁: 1017-1020   2010年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  516. Time-resolved Optical Emission Spectroscopy in Water Electrical Discharges

    C. Miron, MA. Bratescu, N. Saito, O. Takai

    Plasma Chemistry and Plasma Processing   30 巻   頁: 619-631   2010年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  517. Correlation of Cell Adhesive Behaviors on Super-hydrophobic, Super-hydrophilic, and Micropatterned Super-hydrophobic/Super-hydrophilic surfaces to their surface chemistry

    T. Ishizaki, N. Saito, O. Takai

    Langmuir   26 巻   頁: 8147-8154   2010年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  518. 超はっ水表面の作製法とその応用 (特集 固液界面の物理)

    高井 治, 石崎 貴裕, 齋藤 永宏

    トライボロジスト   55 巻   頁: 254-259   2010年

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)  

  519. Solution Plasma Process for Template Removal in Mesoporous Silica Synthesis

    Pootawang Panuphong, Saito Nagahiro, Takai Osamu

    JAPANESE JOURNAL OF APPLIED PHYSICS   49 巻 ( 12 )   2010年

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    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1143/JJAP.49.126202

    Web of Science

  520. Solution Plasma Process for Template Removal in Mesoporous Silica Synthesis

    Pootawang Panuphong, Saito Nagahiro, Takai Osamu

    JAPANESE JOURNAL OF APPLIED PHYSICS   49 巻 ( 12 )   2010年