Updated on 2025/11/14

写真a

 
NAGASHIMA So
 
Organization
Graduate School of Engineering Mechanical Systems Engineering 1 Associate Professor
Graduate School
Graduate School of Engineering
Undergraduate School
School of Engineering Mechanical and Aerospace Engineering
Title
Associate Professor

Degree 3

  1. Ph.D. ( 2012.3   Keio University ) 

  2. M.S.E. ( 2009.3   Keio University ) 

  3. B.E. ( 2007.3   Keio University ) 

Research Interests 14

  1. Mechanics of Materials

  2. Solid Mechanics

  3. Buckling

  4. Surface Instability

  5. Thin Films

  6. ナノ・マイクロパターン

  7. 弾性キャピラリティ

  8. Wettability

  9. バイオマテリアル

  10. diamond-like carbon

  11. 顕微鏡その場観察実験

  12. 有限要素解析

  13. Interface Engineering

  14. Tissue Engineering

Research Areas 3

  1. Nanotechnology/Materials / Structural and functional materials

  2. Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Machine materials and mechanics

  3. Nanotechnology/Materials / Nano/micro-systems

Current Research Project and SDGs 3

  1. 固体の表面不安定現象を積極的に活用した機能材料・デバイス開発

  2. 液体が駆動する弾性体の変形

  3. 生物器官に着想を得た機能表面の設計

Research History 9

  1. Japan Science and Technology Agency

    2023

  2. Nagoya University   Department of Mechanical Systems Engineering   Associate Professor

    2021

  3. Osaka University   Division of Mechanical Engineering   Assistant Professor

    2017 - 2021

  4. Osaka University   Graduate School of Engineering   Assistant Professor

    2020.4 - 2021.3

  5. Osaka University   Assistant Professor

    2017.4 - 2020.3

  6. Osaka University   Designated Assistant Professor

    2017.2 - 2017.3

  7. Princeton University   Department of Mechanical and Aerospace Engineering   Visiting Postdoctoral Research Associate

    2015.11 - 2016.1

      More details

    Country:United States

    Notes:Academic Mentor: Prof. Howard A. Stone

  8. Korea Institute of Science and Technology   Institute for Multidisciplinary Convergence of Matter   Star Postdoctoral Research Scientist

    2013.7 - 2017.1

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    Country:Korea, Republic of

    Notes:Academic Mentor: Dr. Myoung-Woon Moon

  9. Korea Institute of Science and Technology   Institute for Multidisciplinary Convergence of Matter   Postdoctoral Research Scientist

    2012.4 - 2013.6

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    Country:Korea, Republic of

    Notes:Academic Mentor: Dr. Myoung-Woon Moon

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Education 3

  1. Keio University

    2009.4 - 2012.3

  2. Keio University

    2007.4 - 2009.3

  3. Keio University

    2003.4 - 2007.3

Professional Memberships 7

  1. 日本機械学会

  2. 日本材料学会

  3. MRS-J

  4. American Society of Mechanical Engineers (ASME)

  5. Materials Research Society (MRS)

  6. 日本計算数理工学会

  7. 日本実験力学会

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Committee Memberships 25

  1. 日本機械学会   M&M・CMD若手シンポジウム2025 実行委員  

    2024.10   

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    Committee type:Academic society

  2. 日本材料学会   第73期企画・広報委員会運営委員  

    2024.6   

  3. 日本機械学会   材料力学部門 幹事  

    2024.4   

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    Committee type:Academic society

  4. 日本計算数理工学会   監事  

    2024.4   

  5. 日本機械学会   材料力学部門 第102期運営委員会 部門幹事  

    2024.4 - 2025.3   

  6. 日本機械学会 最適化シンポジウム2022   副幹事  

    2022.6 - 2022.11   

  7. 日本材料学会   第70期マルチスケール材料力学部門委員会 企画担当幹事  

    2021.6 - 2022.5   

  8. 第67回理論応用力学講演会   セッション「形態と機能の材料力学」オーガナイザー  

    2024.1 - 2024.9   

  9. 第67回理論応用力学講演会 OS3「形態と機能の材料力学」   オーガナイザ  

    2023.12   

  10. 日本材料学会   第72期企画・広報委員会運営委員  

    2023.6 - 2024.5   

  11. 日本材料学会 第71期企画・広報委員会   運営委員  

    2022.6   

  12. 日本材料学会   第71期企画・広報委員会運営委員  

    2022.6 - 2023.5   

  13. 日本機械学会 最適化シンポジウム2022(OPTIS2022)   副幹事  

    2022.6 - 2022.11   

  14. 日本材料学会   第70期企画・広報委員会運営委員  

    2021.6 - 2022.5   

  15. 日本機械学会 機械材料・材料加工部門   代議員  

    2021.4 - 2022.3   

  16. 日本機械学会 M&M2021材料力学カンファレンス   実行委員  

    2021.4 - 2021.9   

  17. 日本機械学会 M&M2021材料力学カンファレンス OS10「成長とかたちの材料力学」   オーガナイザー  

    2021.1 - 2021.9   

  18. 日本材料学会 第69期マルチスケール材料力学部門委員会   企画担当幹事  

    2020.6 - 2021.5   

  19. 日本材料学会 第69期企画・広報委員会   運営委員  

    2020.6 - 2021.5   

  20. 日本機械学会 機械材料・材料加工部門   代議員  

    2020.4 - 2021.3   

  21. 日本材料学会 第68期企画・広報委員会   運営委員  

    2019.6 - 2022.5   

  22. 日本材料学会 第68期マルチスケール材料力学部門委員会   企画担当幹事  

    2019 - 2020   

  23. 文部科学省 科学技術・学術政策研究所科学技術予測センター   専門調査員  

    2018.4 - 2022.3   

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    Committee type:Government

  24. 日本材料学会 第67期企画・広報委員会   運営委員  

    2018 - 2019   

  25. 日本材料学会 第67期マルチスケール材料力学部門委員会   企画担当幹事  

    2018 - 2019   

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Awards 12

  1. Young Scientists’ Award

    2023.4   Commendation for Science and Technology by the Minister of Education, Culture, Sports, Science and Technology, Japan  

    So Nagashima

  2. Award for Promising Researchers

    2021.5   JSMS  

    So Nagahsima

  3. 日本機械学会 奨励賞(研究)

    2020.4   薄膜–基板構造体の座屈により自律形成する表面微細周期構造の変形現象の研究

    永島 壮

  4. Research Award

    2024.3   JSME Tokai Branch  

    So Nagashima

  5. Best Presentation Award

    2022.3   JSMS Tokai Branch  

    So Nagashima

  6. 日本機械学会 材料力学部門 優秀講演表彰(M&M2019)

    2020.1   水の表面張力が駆動する薄膜マイクロリンクルの変形

    永島 壮

  7. 日本材料学会 第68期学術講演会 優秀講演発表賞

    2019.6   液体の表面張力が駆動する薄膜リンクルの変形

    永島 壮

  8. 日本材料学会 第4回マルチスケール材料力学シンポジウム 優秀講演賞

    2019.5   ナノ・マイクロ階層リンクルを利用したDNAナノワイヤアレイの創製

    永島 壮

  9. 日本材料学会 第2回マルチスケール材料力学シンポジウム 優秀講演賞

    2017.5   薄膜の座屈現象を利用した機能性ナノマテリアル/システムの創製

    永島 壮

  10. Best Poster Award, The 4th nano-Imprint Molding Print Forum

    2015.2   Tunable nanochannels fabricated by mechanical folding of a stiff layer on a soft substrate

    永島 壮

  11. Best Paper Award, The 7thWorld Congress on Biomimetics, Artificial Muscles and Nano-Bio

    2013.8   Bio-inspired folded structures on soft polymer substrates

    永島 壮

  12. Best Poster Award, The 6th International Symposium on Nature-Inspired Technology

    2013.1   Nature-inspired folded structures on poly(dimethylsiloxane) substrates

    永島 壮

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Papers 59

  1. Hierarchical wrinkle pattern drives tenogenic differentiation from human mesenchymal stem cells

    Kim, J; Nagashima, S; Wang, JF; Matsubara, S; Maeda, E; Okumura, D; Matsumoto, T

    PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART H-JOURNAL OF ENGINEERING IN MEDICINE   Vol. 239 ( 10 ) page: 1000 - 1009   2025.10

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    Language:English   Publisher:Proceedings of the Institution of Mechanical Engineers Part H Journal of Engineering in Medicine  

    Stem cells possess the unique abilities to self-renew and differentiate into various cell types, making them invaluable in tissue engineering and regenerative medicine. This study explores the behavior of human bone marrow-derived mesenchymal stem cells (hMSCs) on poly(dimethylsiloxane) (PDMS) substrates with hierarchical wrinkle patterns. These bio-inspired patterns were created using the surface instability of gold-coated elastomer bilayers. The results indicate that the hierarchical wrinkles not only promote cell alignment but also up-regulate tenogenic differentiation markers without chemical induction. The cells exhibited increased expression of tenocyte markers (Mkx, and Col1) and decreased expression of osteoblast (Alp, and Opn) and chondrocyte (Sox9) markers. This bio-inspired substrate design, mimicking natural extracellular matrix structures, provides a promising approach for developing functional tissue constructs and advancing stem cell-based regenerative therapies. The study underscores the importance of substrate topography in directing stem cell fate, highlighting its potential in mechanobiological applications and tissue engineering.

    DOI: 10.1177/09544119251378949

    Web of Science

    Scopus

    PubMed

  2. Soft wetting of film–substrate bilayers: Wrinkle flattening near the three-phase contact line Reviewed

    S. Nagashima, R. Okamoto, S. Matsubara, D. Okumura

    Inter. J. Multiph. Flow   Vol. 191   page: 105324 - 105324   2025.10

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Elsevier BV  

    DOI: 10.1016/j.ijmultiphaseflow.2025.105324

    Web of Science

    Scopus

  3. Capillarity-induced fold localization in film–substrate systems Reviewed

    S. Nagashima, R. Ota, S. Matsubara, D. Okumura

    Interface Focus   Vol. 15   page: 20240054   2025.3

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

  4. Tunable wrinkles in diamond-like carbon films on PDMS substrates Reviewed

    S. Nagashima, T. Hasebe, A. Hotta, T. Suzuki

    Diam. Relat. Mater.   Vol. 151   page: 11855   2025.1

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.diamond.2024.111855

    Web of Science

    Scopus

  5. Tunable herringbone patterns in SiO<sub>2</sub> thin films

    NAGASHIMA So, OKUBO Takeru, MATSUKAWA Koshiro, MATSUBARA Seishiro, OKUMURA Dai

    Mechanical Engineering Journal   Vol. 12 ( 5 ) page: 25-00148 - 25-00148   2025

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    Language:English   Publisher:The Japan Society of Mechanical Engineers  

    <p>Ordered zigzag wrinkles, or herringbones, arising from surface instability in biaxially compressed thin films on soft substrates offer significant potential for diverse engineering applications. In this study, we experimentally investigated the formation of herringbone patterns in silicon dioxide (SiO<sub>2</sub>) thin films bonded to poly(dimethylsiloxane) (PDMS) substrates. Specifically, we examined how the biaxial pre-strain ratio, defined as the ratio of pre-strain applied to the substrate in the second direction to that applied in the first orthogonal direction prior to film formation, and the film thickness influence herringbone geometry. Under equi-biaxial pre-strain ratio, the films developed herringbones with jog angles of approximately 80°, and the wavelength, amplitude, and length of these patterns showed a nearly linear dependence on film thickness. When the biaxial pre-strain ratio was varied from 0.67 to 1.50, the jog angle was tuned from 40°to 100°. Surface roughness analysis showed that the arithmetical mean height ranged from 0.13 to 0.30 μm depending on both film thickness and biaxial pre-strain ratio. These findings provide insights into controlling herringbone formation in SiO<sub>2</sub> films and offer design guidelines for engineered surfaces with tailored morphological features.</p>

    DOI: 10.1299/mej.25-00148

    Web of Science

    CiNii Research

  6. NUMERICAL ANALYSIS OF WRINKLE-TO-FOLD TRANSITIONS INDUCED BY WATER FILAMENTS

    OTA Rikuto, NAGASHIMA So, MATSUBARA Seishiro, OKUMURA Dai

    Transactions of the Japan Society for Computational Methods in Engineering   Vol. 24 ( 0 ) page: 31 - 36   2024.12

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    Language:Japanese   Publisher:Japan Society for Computational Methods in Engineering  

    Wrinkles in film–substrate bilayers can transition into folds when they are brought into contact with water filaments. This phenomenon has attracted increasing attention for various applications. However, the underlying mechanism remains unclear. Here, we numerically study the water-induced wrinkle-to-fold transitions. The bilayer is modeled using a linear elastic film perfectly bonded to an incompressible neo-Hookean hyperelastic substrate. Eigenvalue buckling analysis is performed to generate wrinkles. In particular, various compressive strains are applied to the bilayer to generate wrinkles with different aspect ratios (amplitude/wavelength). Point loads corresponding to the surface tension of water filaments are then applied to the wrinkles to induce morphological transitions. The effects of the initial wrinkle states on the occurrence of the transitions are investigated. Our results show that the transitions occur when water filaments develop at certain intervals. Furthermore, the width, height, and spacing of the folds can be controlled by adjusting the compressive strain, wavenumber, water height, and point loads.

    DOI: 10.60443/jascome.24.0_31

    CiNii Research

  7. EFFECT OF SECOND STRAIN INVARIANT ON CREASE FORMATION

    OKAMURA Daiki, MATSUBARA Seishiro, NAGASHIMA So, OKUMURA Dai

    Transactions of the Japan Society for Computational Methods in Engineering   Vol. 24 ( 0 ) page: 37 - 42   2024.12

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    Language:Japanese   Publisher:Japan Society for Computational Methods in Engineering  

    In this study, we investigate the effect of the second strain invariant on crease formation under general
    loading conditions. Generalized plane strain finite element analyses, equipped with a perturbation
    force-based approach, are performed on two incompressible elastomers whose strain energies are linear in the first or second strain invariants. To examine the creasing onset delayed by surface tension, we also evaluate the surface tension using numerical results. We found that the critical creasing onsets between two elastomers are the same under general loading conditions, indicating that the crease nucleation starts independently of the apparent stiffness of the elastomer in the homogeneous deformation state. Further, when the out-of-plane deformation is fixed during the crease evolution, the corresponding creased geometry is irrelevant to the kind of the strain invariant, unlike the energy release by creasing. This indicates that out-of-plane deformation is the key factor controlling the difference in the creased geometry between two elastomers. Also, in the presence of the out-of-plane deformation, the difference in the strain invariants influences the creasing onset delayed by the surface tension.

    DOI: 10.60443/jascome.24.0_37

    CiNii Research

  8. ABNORMAL POYNTING EFFECT OF A NONRECIPROCAL GEL

    NONOGAKI Shoma, Yunlei ZHANG, MATSUBARA Seishiro, NAGASHIMA So, ISHIDA Yasuhiro, OKUMURA Dai

    Transactions of the Japan Society for Computational Methods in Engineering   Vol. 24 ( 0 ) page: 25 - 30   2024.12

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    Language:Japanese   Publisher:Japan Society for Computational Methods in Engineering  

    In this study, we investigate the abnormal Poynting effect in a nonreciprocal gel, which is a uniform composite material consisting of oriented nanosheets embedded in a hydrogel matrix. The Poynting effect is a nonlinear phenomenon, i.e., when an elastic body is subjected to simple shear or torsion, the strain occurs in the direction normal to the sheared faces or in the axial direction. We conduct plane-strain finite-element analysis under simple shear using the three models: a neo-Hookean model (nH) and two nonreciprocal gel models, vertically oriented nanosheets (NRv) and horizontally oriented nanosheets (NRh). The nH and NRv models exhibit a normal Poynting effect, i.e., negative. In contrast, the NRh model shows the abnormal Poynting effect, i.e., it starts as a negative but changes to a positive. The simple shear condition is imposed by the displacements at the sheared faces, resulting in an inhomogeneous deformation. It is found that the NRh model forms a shear band. The strain distributions in the material coordinates reveal that the shear band is induced by the micro-buckling of nanosheets.

    DOI: 10.60443/jascome.24.0_25

    CiNii Research

  9. Effect of hierarchical wrinkle pattern on undifferentiated mesenchymal stem cells

    KIM Jeonghyun, NAGASHIMA So, WANG Junfeng, MAEDA Eijiro, OKUMURA Dai, MATSUMOTO Takeo

    The Proceedings of Mechanical Engineering Congress, Japan   Vol. 2024 ( 0 ) page: S021-02   2024

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    Language:Japanese   Publisher:The Japan Society of Mechanical Engineers  

    <p>Micropatterning substrates have been pivotal in mechanobiological studies, offering insights into cellular responses to various topologies. Nagashima's group introduced a bio-inspired hierarchical wrinkle patterned substrate, prompting investigation into its effects on cellular behavior and function. In this study, using polydimethylsiloxane (PDMS) substrates with hierarchical wrinkle patterns, undifferentiated human mesenchymal stem cells were cultured for 3 days. Cell attachment and gene expression were evaluated using staining and real-time PCR, respectively. Hierarchical wrinkle patterns induced cellular alignment along the wrinkle pattern, unlike cells on flat surfaces. Moreover, gene expression analysis revealed up-regulation of tenocyte differentiation markers on wrinkle-patterned PDMS, even without differentiation supplements. These findings underscore its potential as a novel approach for directing stem cell fate towards tenocyte lineage without exogenous differentiation agents. Hence, this study sheds light on the significance of topographical cues in regulating stem cell behavior, offering new avenues for tissue engineering and regenerative medicine applications.</p>

    DOI: 10.1299/jsmemecj.2024.s021-02

    CiNii Research

  10. 動的有限要素解析によるノンレシプロカル性の評価

    岡村 太暉, 野々垣 翔真, 松原 成志朗, 永島 壮, 奥村 大

    理論応用力学講演会 講演論文集   Vol. 67 ( 0 ) page: 16   2024

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    Language:Japanese   Publisher:日本学術会議 「機械工学委員会・土木工学・建築学委員会合同IUTAM分科会」  

    DOI: 10.11345/japannctam.67.0_16

    CiNii Research

  11. Inhomogeneous instability patterns in polyacrylamide hydrogel bilayers

    NAGASHIMA So, UCHIYAMA Wataru, HAYASHI Shunsuke, MATSUBARA Seishiro, OKUMURA Dai

    Mechanical Engineering Journal   Vol. 11 ( 6 ) page: 24-00350 - 24-00350   2024

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    Language:English   Publisher:The Japan Society of Mechanical Engineers  

    <p>Instability-induced patterns with spatially varying dimensions and geometric shapes, or inhomogeneous instability patterns, are ubiquitous in biological structures and have attracted much interest in both fundamental research and engineering applications. However, it remains a challenge to create such patterns using materials with stiffnesses and scales comparable to biological structures. Here, we demonstrate the creation of inhomogeneous instability patterns using film–substrate bilayers of polyacrylamide hydrogels. Swelling of thickness-gradient films on the substrates allows for the coexistence of different instability patterns, including creases and wrinkles, on the surface. The film thickness and the stiffness ratio between the film and substrate are the factors that control the characteristic length of the patterns on the millimeter scale, as well as the switching of the patterns between creases and wrinkles. Furthermore, these patterns can be generated at prescribed local areas on the surface. Our approach to creating inhomogeneous instability patterns on a single surface would help to gain insight into the morphological development of biological patterns and to fabricate bio-inspired functional surfaces.</p>

    DOI: 10.1299/mej.24-00350

    Web of Science

    CiNii Research

  12. Bio‐Inspired Instability‐Induced Hierarchical Patterns Having Tunable Anisotropic Wetting Properties Reviewed Open Access

    S. Nagashima, K. Suzuki, S. Matsubara, D. Okumura

    Adv. Mater. Interfaces   Vol. 10 ( 14 ) page: 2300039   2023.5

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    <jats:title>Abstract</jats:title><jats:p>This paper introduces a method for the bottom‐up fabrication of bio‐inspired hierarchical patterns having tunable anisotropic wetting properties. The method exploits the surface instability of bilayers comprising a gold nanofilm attached to a substantially prestretched elastomer substrate. Upon film formation, highly aligned wrinkles spontaneously form on the surface owing to the surface instability driven by the compressive residual stress in the film. Thereafter, uniaxial compressive strain is applied to the film by prestretch relaxation of the substrate, which generates an array of high‐aspect‐ratio ridges on the surface. Consequently, hierarchical patterns comprising unidirectionally aligned ridges covered with wrinkles are obtained. Water droplets placed on surfaces having the aforementioned hierarchical patterns show direction‐dependent contact angles, resulting in elongated shapes, which indicates the presence of anisotropic wetting properties. The magnitude of wetting anisotropy can be tuned by simple control of the applied compressive strain and film thickness.</jats:p>

    DOI: 10.1002/admi.202300039

    DOI: 10.1002/admi.202300039

    Open Access

    Web of Science

    Scopus

  13. Self-Wrinkling in Polyacrylamide Hydrogel Bilayers Reviewed

    S. Nagashima, N. Akamatsu, X. Cheng, S. Matsubara, S. Ida, H. Tanaka, M. Uchida, D. Okumura

    Langmuir   Vol. 39 ( 11 ) page: 3942 - 3950   2023.3

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    Authorship:Lead author, Last author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:American Chemical Society (ACS)  

    DOI: 10.1021/acs.langmuir.2c03264

    Web of Science

    Scopus

    PubMed

  14. クリースの発達過程に対する影響因子の調査 Reviewed

    永島 壮, 松原 成志朗, 奥村 大

    計算数理工学論文集   Vol. 23   page: 143 - 148   2023

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  15. Wrinkle‐Assisted Capillary Bridging for the Directed Assembly of Single‐Level DNA Nanowire Arrays Reviewed International coauthorship

    S. Nagashima, S. M. Yoon, D. H. Kim, A. Nakatani, M.-W. Moon

    Adv. Mater. Interfaces   Vol. 9 ( 6 ) page: 2102243 - 2102243   2022.2

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

    DOI: 10.1002/admi.202102243

    Web of Science

    Scopus

  16. Diversity of the bifurcations and deformations on films bonded to soft substrates: Robustness of the herringbone pattern and its cognate patterns Reviewed

    Kikuchi, S; Matsubara, S; Nagashima, S; Okumura, D

    JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS   Vol. 159   2022.2

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    Language:English   Publisher:Journal of the Mechanics and Physics of Solids  

    In this study, we investigate the diversity of the bifurcations and deformations during evolution of periodic patterns on compressed films bonded to compliant substrates. Three-dimensional finite element analysis is performed assuming that the first bifurcation has either the hexagonal or square (i.e., checkerboard) dimple mode. Step-by-step eigenvalue buckling analysis is performed to explore sequential bifurcations on the bifurcated paths. It is found that at the second bifurcation, a rectangular checkerboard or stripe mode occurs depending not only on the Young's modulus ratio of the film and substrate, but also on the magnitude of the imperfection prescribed by the first bifurcation mode. Different bifurcation modes give a family of herringbone deformation patterns with different dimensions, i.e., the evolutional process is multiple and robust. Further, superposition of the identical modes in symmetric directions elucidates the existence of distinctive patterns cognate with the herringbone pattern, including a variety of experimentally observed patterns.

    DOI: 10.1016/j.jmps.2021.104757

    Web of Science

    Scopus

  17. Hierarchical wrinkle pattern drives tenogenic differentiation from human mesenchymal stem cells Reviewed

    J. Kim, S. Nagashima, J. Wang, S. Matsubara, E. Maeda, D. Okumura, T. Matsumoto

    Proc. Inst. Mech. Eng. H: J. Eng. Med.     2025.9

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

  18. NUMERICAL ANALYSIS OF WRINKLE-TO-FOLD TRANSITIONS INDUCED BY WATER FILAMENTS Reviewed

    R. Ota, S. Nagashima, S. Matsubara, D. Okumura

    Transactions of the Japan Society for Computational Methods in Engineering   Vol. 24   page: 05-241213   2024.12

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    Authorship:Corresponding author   Language:Japanese   Publishing type:Research paper (scientific journal)  

  19. EFFECT OF SECOND STRAIN INVARIANT ON CREASE FORMATION Reviewed

    D. Okamura, S. Matsubara, S. Nagashima, D. Okumura

    Transactions of the Japan Society for Computational Methods in Engineering   Vol. 24   page: 06-241213   2024.12

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

  20. ABNORMAL POYNTING EFFECT OF A NONRECIPROCAL GEL Reviewed

    S. Nonogaki, Y. Zhang, S. Matsubara, S. Nagashima, Y. Ishida, D. Okumura

    Transactions of the Japan Society for Computational Methods in Engineering   Vol. 24   page: 04-241213   2024.12

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

  21. Inhomogeneous instability patterns in polyacrylamide hydrogel bilayers Reviewed

    S. Nagashima, W. Uchiyama, S. Hayashi, S. Matsubara, D. Okumura

    Mech. Eng. J     2024.11

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

  22. Crease instability in Gent–Gent hyperelastic materials Open Access

    S. Matsubara, K. Kobayashi, T. Ishida, S. Nagashima, D. Okumura

    Int. J. Mech. Sci.   Vol. 280   page: 109549 - 109549   2024.10

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

    DOI: 10.1016/j.ijmecsci.2024.109549

    Open Access

    Web of Science

    Scopus

  23. Deformation in the wrinkle–crease transformation Reviewed

    T. Ishida, S. Matsubara, S. Nagashima, D. Okumura

    Int. J. Solids Struct.   Vol. 298   page: 112876 - 112876   2024.7

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

    DOI: 10.1016/j.ijsolstr.2024.112876

    Web of Science

    Scopus

  24. Computational and physical aspects for the occurrence of crease in an elastomer under general loading conditions Reviewed

    S. Matsubara, A. Ogino, S. Nagashima, D. Okumura

    Int. J. Solids Struct.   Vol. 288   page: 112610 - 112610   2024.2

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

    DOI: 10.1016/j.ijsolstr.2023.112610

    Web of Science

    Scopus

  25. Phase-field analysis of mutual motion of solids and liquids due to surface tension

    KOUKETSU Takumi, NAKATANI Akihiro, DOI Yusuke, NAGASHIMA So

    The Proceedings of Conference of Kansai Branch   Vol. 2024.99 ( 0 ) page: 20207   2024

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    Language:Japanese   Publisher:The Japan Society of Mechanical Engineers  

    DOI: 10.1299/jsmekansai.2024.99.20207

    CiNii Research

  26. TENSION-COMPRESSION ASYMMETRY EVALUATION OF A NONRECIPROCAL GEL BY HOMOGENIZATION ANALYSIS

    FUSE Takuma, MATSUBARA Seishiro, NAGASHIMA So, OKUMURA Dai

    Transactions of the Japan Society for Computational Methods in Engineering   Vol. 23 ( 0 ) page: 137 - 142   2023.11

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    Language:Japanese   Publisher:Japan Society for Computational Methods in Engineering  

    A nonreciprocal gel consisting of hydrogel and nanosheet exhibits mechanical nonreciprocity, which has potential applications in mechanical engineering. An earlier study has revealed that this mechanical nonreciprocity is triggered by the tension-compression asymmetry resulting from the microscopic buckling behavior of nanosheets during compressive deformation, but the relevant influencing factors remain unknown. In this study, we investigate the microscopic buckling behavior and the resultant tension-compression asymmetry in a nonreciprocal gel subjected to uniaxial conditions. Eigenvalue buckling and post-buckling analyses equipped with computational homogenization are performed on a unit cell modeled as an elastic bilayer for which ratios of Young’s modulus and thickness are parameterized. The results confirm that selecting a dilute microscopic buckling with the characteristic wavelength or a non-dilute microscopic buckling with the infinite wavelength hinges on the ratios of Young’s modulus and thickness, which is consistent with the theoretical solution for the buckling behavior of a layered composite. We also elucidate that the tension-compression asymmetry is more pronounced as the Young’s modulus ratio increases or the thickness ratio decreases.

    DOI: 10.60443/jascome.23.0_137

    CiNii Research

  27. LARGE DEFORMATION ANALYSIS OF A NONRECIPROCAL GEL UNDER CYLINDRICAL INDENTATION

    NONOGAKI Shoma, MATSUBARA Seishiro, Nagashima So, OKUMURA Dai

    Transactions of the Japan Society for Computational Methods in Engineering   Vol. 23 ( 0 ) page: 123 - 128   2023.11

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    Language:Japanese   Publisher:Japan Society for Computational Methods in Engineering  

    In this study, we investigate the large deformation analysis of a nonreciprocal gel under cylindrical indentation. The nonreciprocity of the gel is modeled by extending the framework of anisotropic linear elasticity [Wang et al., 2023. Mechanical nonreciprocity in a uniform composite material. Science 380, 192–198]. Plane-strain finite-element analysis is performed by assuming the frictionless between the gel and the rigid indenter, leading to reproducing the asymmetric response of the nonreciprocal gel. It is found that severe large deformations cause non-convergence of incremental calculations, which is resolved by introducing artificial viscosity and hourglass control. The combination prevents the occurrence of hourglass deformation modes around the area directly below the indenter as well as obtains converged solutions in efficient incremental calculations. The use of larger values of the two parameters causes the increase of computational efficiency and the decrease of computational accuracy. Parametric studies elucidate the existence of the proper region of the two parameters.
    Nonreciprocal gel, Tension compression asymmetry, Large deformations, FEA

    DOI: 10.60443/jascome.23.0_123

    CiNii Research

  28. Investigation of influencing factors on the process of crease evolution Reviewed

    T. Ishida, S. Nagashima, S. Matsubara, D. Okumura

    Trans. Jpn. Soc. Comput. Methods Eng.   Vol. 23   page: 20-231124   2023.11

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    Authorship:Corresponding author   Language:Japanese   Publishing type:Research paper (scientific journal)  

  29. Tension-compression asymmetry evaluation of a nonreciprocal gel by homogenization analysis Reviewed

    T. Fuse, S. Matsubara, S. Nagashima, D. Okumura

    Trans. Jpn. Soc. Comput. Methods Eng.   Vol. 23   page: 19-231124   2023.11

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

  30. Large deformation analysis of a nonreciprocal gel under cylindrical indentation Reviewed

    S. Nonogaki, S. Matsubara, S. Nagashima, D. Okumura

    Trans. Jpn. Soc. Comput. Methods Eng.   Vol. 23   page: 17-231124   2023.11

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

  31. Visualization and analysis of skin strain distribution in various human facial actions Reviewed

    T. Misu, H. Ishihara, S. Nagashima, Y. Doi and A. Nakatani

    Mech. Eng. J.     2023.9

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

  32. Time-swelling superposition principle for the linear viscoelastic properties of polyacrylamide hydrogels Reviewed

    S. Matsubara, A. Takashima, S. Nagashima, S. Ida, H. Tanaka, M. Uchida and D. Okumura

    Adv. Struct. Mater.     2023.8

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

  33. Prestretch dependence and bifurcation property of ridge pattern transformation Reviewed

    D. Tanaka, H. Wakabayashi, S. Matsubara, S. Nagashima, D. Okumura

    Trans. Jpn. Soc. Comput. Methods Eng.   Vol. 22   page: 117 - 122   2022.12

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    Language:Japanese  

  34. Wrinkle Patterns in Thin Films Invited

    NAGASHIMA So

    Journal of the Society of Materials Science, Japan   Vol. 71 ( 8 ) page: 727 - 727   2022.8

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    Authorship:Lead author, Corresponding author   Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:The Society of Materials Science, Japan  

    DOI: 10.2472/jsms.71.727

    CiNii Research

  35. Introduction to the Young Student Symposium on Materials Science Invited

    NAGASHIMA So, NOGUCHI Yasutaka

    Journal of the Society of Materials Science, Japan   Vol. 71 ( 4 ) page: 415 - 415   2022.4

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    Authorship:Lead author, Corresponding author   Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:The Society of Materials Science, Japan  

    DOI: 10.2472/jsms.71.415

    CiNii Research

  36. Finite element analysis for nucleation and propagation of crease in an elastic solid

    Matsubara Seishiro, Hoshi Ryogo, Nagashima So, Okumura Dai

    NCTAM papers, National Congress of Theoretical and Applied Mechanics, Japan   Vol. 66 ( 0 ) page: 5   2022

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    Language:Japanese   Publisher:National Committee for IUTAM  

    <p>This study investigates the nucleation and propagation of crease from a V-shaped notch in an elastic solid. Finite element analyses are conducted on an incompressible Neo-Hookean elastic solid. The first crease is induced by a V-shaped notch, whereas the subsequent sequential creases occur as the self-organization induced by previous creases. The crease propagation is regularized at the threshold compressive strain of 0.323 in the case of the global compressive strain <i>ε</i><sub>G </sub><=0.323, while an elastic solid is supercritical in the case of <i>ε</i><sub>G</sub>>0.323. The nonlinear perturbation approach reveals that the periodic distance between creases minimizing total elastic energy is larger than that predicted by self-organization and increases in response to <i>ε</i><sub>G</sub> approaching to 0.323.</p>

    DOI: 10.11345/japannctam.66.0_5

    CiNii Research

  37. リッジパターン変態のプレストレッチ依存性と分岐座屈特性 Reviewed

    田中 大地, 若林 駿人, 松原 成志朗, 永島 壮, 奥村 大

    計算数理工学論文集   Vol. 22   page: 117 - 121   2022

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    Language:Japanese  

    CiNii Research

  38. Diversity of the bifurcations and deformations on films bonded to soft substrates: robustness of the herringbone pattern and its cognate patterns Reviewed

    S. Kikuchi, S. Matsubara, S. Nagashima, D. Okumura

    J. Mech. Phys. Solids   Vol. 159   page: 10457   2021.12

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

    DOI: https://doi.org/10.1016/j.jmps.2021.104757

  39. Effective factors analysis of evolution of herringbone and triple-junction patterns Reviewed

    D. Tanaka, S. Kikuchi, S. Matsubara, S. Nagashima, D. Okumura

    Transactions of the Japan Society for Computational Methods in Engineering   Vol. 21   page: 09-211218   2021.11

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    Language:Japanese  

  40. 体心立方結晶における非線形エネルギー局在振動の探索 Reviewed

    土井祐介,小宮拓也,永島 壮,中谷彰宏

    材料   Vol. 70   page: 330 - 335   2021.4

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: https://doi.org/10.2472/jsms.70.330

  41. Capillary-Induced Wrinkle-to-Fold Transitions Under Biaxial Compression Reviewed

    Nagashima, So, Nakatani, Akihiro

    Langmuir   Vol. 37 ( 17 ) page: 5282 - 5289   2021.4

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1021/acs.langmuir.1c00347

  42. Search for nonlinear energy localized structure in bcc crystals Reviewed

    Y. Doi, T. Komiya, S. Nagashima, A. Nakatani

    J. Soc. Mater. Sci. Japan   Vol. 70   page: 330 - 335   2021.4

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  43. Spontaneous formation of aligned DNA nanowires by capillarity-induced skin folding Reviewed International coauthorship

    S. Nagashima, H. D. Ha, D. H. Kim, A. Kosmrlj, H. A. Stone and M.-W. Moon

    Proc. Natl. Acad. Sci. USA   Vol. 114   page: 6233 - 6237   2017

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: https://doi.org/10.1073/pnas.1700003114

  44. Time course analysis of antithrombogenic properties of fluorinated diamond-like carbon coating determined via accelerated aging tests: Quality control for medical device commercialization Reviewed

    S. Maegawa, T. Hasebe, Y. Yamato, K. Bito, S. Nagashima, T. Hayashi, T. Mine, T. Matsumoto, A. Hotta and T. Suzuki

    Diam. Relat. Mater.   Vol. 70   page: 33 - 38   2016

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

    DOI: https://doi.org/10.1016/j.diamond.2016.09.021

  45. Tunable nanochannels fabricated by mechanical wrinkling/folding of a stiff skin on a soft polymer [SELECTED AS BACK COVER] Reviewed International coauthorship

    S. Nagashima, H. Ebrahimi, K.-R. Lee, A. Vaziri and M.-W. Moon

    Adv. Mater. Interfaces   Vol. 2   page: 1400493   2015

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: https://doi.org/10.1002/admi.201400493

  46. Self-assembled folding of a biaxially compressed film on a compliant substrate Reviewed International coauthorship

    Sk. F. Ahmed, S. Nagashima, J. Y. Lee, K.-R. Lee, K.-S. Kim and M.-W. Moon

    Carbon   Vol. 76   page: 105 - 112   2014

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

    DOI: https://doi.org/10.1016/j.carbon.2014.04.056

  47. Adhesion behavior of mouse liver cancer cells on nanostructured superhydrophobic and superhydrophilic surfaces Reviewed International coauthorship

    T.-J. Ko, E. Kim, S. Nagashima, K. H. Oh, K.-R. Lee, S. Kim and M.-W. Moon

    Soft Matter   Vol. 9   page: 8705 - 8711   2013

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

    DOI: https://doi.org/10.1039/C3SM51147B

  48. Hardness and surface roughness of hydrogenated amorphous carbon-based films synthesized by atmospheric pressure-plasma enhanced chemical vapor deposition at low temperature Reviewed

    M. Noborisaka, R. Horikoshi, S. Nagashima, A. Shirakura and T. Suzuki

    Thin Solid Films   Vol. 527   page: 114 - 119   2013

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

    DOI: https://doi.org/10.1016/j.tsf.2012.11.065

  49. Ultrastructural characterization of surface induced-platelet activation on articial materials by transmission electron microscopy Reviewed

    Y. Yoshimoto, T. Hasebe, K. Takahashi, M. Amari, S. Nagashima, A. Kamijo, A. Hotta, K. Takahashi and T. Suzuki

    Microsc. Res. Tech.   Vol. 76   page: 342 - 349   2013

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

    DOI: https://doi.org/10.1002/jemt.22172

  50. Hydrophobicity and non-thrombogenicity of nanoscale dual rough surface coated with uorine-incorporated diamond-like carbon films: Biomimetic surface for blood-contacting medical devices Reviewed International coauthorship

    T. Hasebe, S. Nagashima, A. Kamijo, M.-W. Moon, Y. Kashiwagi, A. Hotta, K.-R. Lee, K. Takahashi, T. Yamagami and T. Suzuki

    Diam. Relat. Mater.   Vol. 38   page: 14 - 18   2013

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

    DOI: https://doi.org/10.1016/j.diamond.2013.06.001

  51. Controlled formation of wrinkled diamond-like carbon (DLC) film on grooved poly(dimethylsiloxane) substrate Reviewed

    S. Nagashima, T. Hasebe, D. Tsuya, T. Horikoshi, M. Ochiai, S. Tanigawa, Y. Koide, A. Hotta and T. Suzuki

    Diam. Relat. Mater.   Vol. 22   page: 48 - 51   2012

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: https://doi.org/10.1016/j.diamond.2011.12.013

  52. Tailoring surface topographies of polymers by using ion beam: Recent advances and the potential applications in biomedical and tissue engineering Reviewed

    T. Hasebe*, S. Nagashima* (*equal contribution), Y. Yoshimoto, A. Hotta and T. Suzuki

    Nucl. Instr. Meth. B   Vol. 282   page: 134 - 136   2012

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: https://doi.org/10.1016/j.nimb.2011.08.066

  53. Synthesis of transparent and hard SiOC(–H) thin films on polycarbonate substrates by PECVD method Reviewed

    M. Noborisaka, H. Kodama, S. Nagashima, A. Shirakura, T. Horiuchi and T. Hasebe

    Surf. Coat. Technol.   Vol. 206   page: 2581 - 2584   2012

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

    DOI: https://doi.org/10.1016/j.surfcoat.2011.11.017

  54. Human umbilical vein endothelial cell interaction with fluorine-incorporated amorphous carbon films Reviewed

    Y. Yoshimoto, T. Hasebe, S. Nagashima, A. Kamijo, T. Nakatani, T. Yamagami, N. Kitamura, T. Kitagawa, A. Hotta, K. Takahashi and T. Suzuki

    Jpn. J. Appl. Phys.   Vol. 51   page: 090129   2012

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

  55. Combining polymers with diamond-like carbon (DLC) for highly functionalized materials Reviewed

    R. Asakawa*, S. Nagashima* (*equal contribution), Y. Nakamura, T. Hasebe, T. Suzuki and A. Hotta

    Surf. Coat. Technol.   Vol. 206   page: 676 - 685   2011

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: https://doi.org/10.1016/j.surfcoat.2011.02.064

  56. Design for improved adhesion of fluorine-incorporated hydrogenated amorphous carbon on metallic stent: Three-layered structure with controlled surface free energy Reviewed

    T. Hasebe, K. Murakami, S. Nagashima, Y. Yoshimoto, A. Ihara, M. Otake, R. Kasai, S. Kasuya, N. Kitamura, A. Kamijo, H. Terada, A. Hotta, K. Takahashi and T. Suzuki

    Diam. Relat. Mater.   Vol. 20   page: 902 - 906   2011

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

    DOI: https://doi.org/10.1016/j.diamond.2011.04.014

  57. The evaluation of reusability of diamond-like carbon (DLC) coated PET bottles with respect to gas barrier and anti-contamination properties Reviewed

    A. Shirakura, Y. Yoshimoto, S. Nagashima and T. Suzuki

    J. Appl. Pack. Res.   Vol. 5   page: 227 - 236   2011

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  58. Effect of oxygen plasma treatment on non-thrombogenicity of diamond-like carbon films Reviewed

    S. Nagashima, T. Hasebe, A. Kamijo, Y. Yoshimoto, A. Hotta, H. Morita, H. Terada, M. Tanaka, K. Takahashi and T. Suzuki

    Diam. Relat. Mater.   Vol. 19   page: 861 - 865   2010

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: https://doi.org/10.1016/j.diamond.2010.02.003

  59. Depth proling of fluorine-doped diamond-like carbon (F-DLC) film: Localized uorine in the top-most thin layer can enhance the non-thrombogenic properties of F-DLC Reviewed

    T. Hasebe*, S. Nagashima* (*equal contribution), A. Kamijo, T. Yoshimura, T. Ishimaru, Y. Yoshimoto, S. Yohena, H. Kodama, A. Hotta, K. Takahashi and T. Suzuki

    Thin Solid Films   Vol. 516   page: 299 - 303   2007

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: https://doi.org/10.1016/j.tsf.2007.06.033

▼display all

Books 3

  1. Time-Swelling Superposition Principle for the Linear Viscoelastic Properties of Polyacrylamide Hydrogels

    Matsubara S., Takashima A., Nagashima S., Ida S., Tanaka H., Uchida M., Okumura D.

    Advanced Structured Materials  2023 

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    We study the linear viscoelastic properties of polyacrylamide hydrogels over a wide range of swelling and deswelling states. The experimental data of dynamic moduli demonstrate that deswollen hydrogels exhibit the linear viscoelastic behaviors while swollen hydrogels behave as a purely elastic material. To capture the linear viscoelastic nature of deswollen hydrogels, we advocate the time-swelling superposition principle inspired by the swelling-dependent linear viscoelasticity model. In this principle, the Williams-Landel-Ferry type equation and the scaling law prescribe the horizontal and vertical shift factors as a function of the volume swelling ratio, making it possible to organize the dynamic moduli in the deswelling state. The resulting master curves elucidate that the dynamic moduli have a positive power-law correlation with the angular frequency. In addition, two shift factors reveal that deswelling enhances both frequency sensitivity and elastic property in dynamic moduli. The scaling exponents of the elastic moduli in the deswelling state are, in particular, larger than those in the swelling state, regardless of the contents of monomer and cross-linker. The generalized Maxwell model equipped with identified material parameters quantifies the linear viscoelastic behaviors that depend on frequency and water content.

    DOI: 10.1007/978-3-031-39070-8_12

    Scopus

  2. Diamond-like carbon coatings for joint arthroplasty. In: R. 4 Sonntag and J. P. Kretzer (eds.) Materials for Joint Arthroplasty-Biotribology of Potential Bearings International journal

    S. Nagashima, M.-W. Moon and K.-R. Lee( Role: Contributor)

    Imperial College Press  2015 

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    Language:English Book type:Scholarly book

  3. Diamond-like carbon coatings with special wettability for automotive applications. In: A. Levinson, S. C. Cha and A. Erdemir (eds.) Coating Technology for Vehicle Applications International journal

    S. Nagashima and M.-W. Moon( Role: Contributor)

    Springer  2015 

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    Language:English Book type:Scholarly book

MISC 1

  1. 表面不安定現象を積極的に利用する Invited

    永島 壮

    名古屋大学工学研究科情報誌PRESSe   Vol. 48   page: 19 - 19   2022.12

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    Authorship:Lead author, Last author, Corresponding author   Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (bulletin of university, research institution)  

Presentations 149

  1. Surface instabilities in soft materials for bio-inspired adaptive interfaces Invited

    S. Nagashima

    The Nagoya–Melbourne Joint Research Workshop 2025  2025.2.18 

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    Event date: 2025.2

    Language:English   Presentation type:Oral presentation (invited, special)  

  2. Instability patterns in gel films on fiber-incorporated substrates

    S. Nagashima, S. Hayashi, A. Solhtalab, S. Matsubara, M. J. Razavi, D. Okumura

    The 14th Asia-Pacific Conference on Fracture and Strength (APCFS 2024)  2024.11.29 

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    Event date: 2024.11

    Language:English   Presentation type:Oral presentation (general)  

  3. Controlling the formation of bio-inspired surface patterns using hydrogels Invited

    S. Nagashima

    2024 IEEE International Conference on Cyborg and Bionic Systems  2024.11.20 

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    Event date: 2024.11

    Language:English   Presentation type:Oral presentation (invited, special)  

  4. Water-induced transformation of surface instability patterns Invited

    S. Nagashima

    The 4th International Workshops on Advances in Computational Mechanics (IWACOM-IV)  2024.9.19 

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    Event date: 2024.9

    Language:English  

  5. Capillarity-induced formation of surface instability patterns Invited

    S. Nagashima

    The International Union of Theoretical and Applied Mechanics (IUTAM) Symposium on Capillarity and Elastocapillarity in Biology  2024.8.23 

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    Event date: 2024.8

    Language:English  

  6. 表面不安定現象を積極的に利用した機能構造の形成 Invited

    永島 壮

    東京大学 第44回機械工学セミナー  2024.3.21 

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    Event date: 2024.3

    Language:Japanese   Presentation type:Public lecture, seminar, tutorial, course, or other speech  

  7. Contributing to sustainable development through the rational design of instability-induced functional patterns in thin films Invited International conference

    S. Nagashima

    International Conference on Sustainable Development and Disaster Resilience through Innovations (ICSDDRTI-2023)  2023.10.6 

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    Event date: 2023.10

    Language:English   Presentation type:Oral presentation (invited, special)  

  8. Elastocapillary-driven instability patterns in nanofilms. Invited

    S. Nagashima, D. Okumura

    Materials Research Meeting 2025 (MRM2025)  2025.12.8 

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    Language:English   Presentation type:Oral presentation (invited, special)  

  9. Engineering self-organized patterns in soft materials via controlled water interactions Invited

    S. Nagashima

    The 32nd International Display Workshops (IDW ’25)  2025.12.3 

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    Language:English   Presentation type:Oral presentation (invited, special)  

  10. Harnessing water-mediated surface instability in soft materials to engineer programmable bio-inspired interfaces

    S. Nagashima, S. Matsubara, D. Okumura

    Materials Today Conference 2025  2025.6.25 

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    Event date: 2025.6

    Language:English   Presentation type:Poster presentation  

  11. Mechanical instabilities in thin solid films induced by water interactions

    S. Nagashima, S. Matsubara, D. Okumura

    The 10th Symposium on Multiscale Materials Mechanics: Mechanism and Modeling  2025.6.7 

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    Event date: 2025.6

    Language:English   Presentation type:Poster presentation  

  12. Regulated tenogenic differentiation of stem cells on hierarchical wrinkles

    S. Nagashima, J. Kim, J. Wang, S. Matsubara, E. Maeda, T. Matsumoto, D. Okumura

    The 34th Annual Meeting of MRS-J  2024.12.16 

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    Event date: 2024.12

    Language:English   Presentation type:Oral presentation (general)  

  13. NUMERICAL ANALYSIS OF WRINKLE-TO-FOLD TRANSITIONS INDUCED BY WATER FILAMENTS

    Rikuto OTA, So NAGASHIMA, Seishiro MATSUBARA, Dai OKUMURA

    JASCOME Symposium 2024  2024.12.14 

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    Event date: 2024.12

    Language:Japanese   Presentation type:Oral presentation (general)  

  14. EFFECT OF SECOND STRAIN INVARIANT ON CREASE FORMATION

    Daiki OKAMURA, Seishiro MATSUBARA, So NAGASHIMA, Dai OKUMURA

    JASCOME Symposium 2024  2024.12.14 

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    Event date: 2024.12

    Language:Japanese   Presentation type:Oral presentation (general)  

  15. ABNORMAL POYNTING EFFECT OF A NONRECIPROCAL GEL

    Shoma NONOGAKI, Yunlei ZHANG, Seishiro MATSUBARA, So NAGASHIMA, Yasuhiro ISHIDA, Dai OKUMURA

    JASCOME Symposium 2024  2024.12.14 

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    Event date: 2024.12

    Language:Japanese   Presentation type:Oral presentation (general)  

  16. Upper bound analysis of bifurcated paths leading to herringbone patterns

    D. Okumura, S. Matsubara, S. Nagashima, H. Tanaka

    The 14th Asia-Pacific Conference on Fracture and Strength (APCFS 2024)  2024.11.28 

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    Event date: 2024.11

    Language:English   Presentation type:Oral presentation (general)  

  17. Finite element analysis of the bifurcations of herringbone patterns

    F. Yamauchi, S. Matsubara, S. Nagashima, D. Okumura

    The 14th Asia-Pacific Conference on Fracture and Strength (APCFS 2024)  2024.11.28 

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    Event date: 2024.11

    Language:English   Presentation type:Oral presentation (general)  

  18. Effect of the second strain invariant on crease instability

    D. Okamura, S. Matsubara, S. Nagashima, D. Okumura

    The 14th Asia-Pacific Conference on Fracture and Strength (APCFS 2024)  2024.11.29 

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    Event date: 2024.11

    Language:English   Presentation type:Oral presentation (general)  

  19. Capillarity-Induced Evolution of Surface Instability Patterns

    S. Nagashima, R. Ota, S. Matsubara, D. Okumura

    The 15th Asia-Pacific Symposium on Engineering Plasticity and Its Applications (AEPA2024)  2024.10.27 

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    Event date: 2024.10

    Language:English   Presentation type:Oral presentation (invited, special)  

  20. Tension-Compression Asymmetry Evaluation of Nonreciprocal Gels Using Homogenization Analysis

    T. Fuse, S. Matsubara, S. Nagashima, D. Okumura

    IUTAM Symposium on Mechanics of Soft Materials and Soft Robots  2024.5.17 

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    Event date: 2024.5

    Language:English   Presentation type:Poster presentation  

  21. Stabilization of a Nonreciprocal Gel in Large Deformation Analysis and its Effect on Accuracy and Efficiency

    S. Nonogaki, S. Matsubara, S. Nagashima, D. Okumura

    IUTAM Symposium on Mechanics of Soft Materials and Soft Robots  2024.5.17 

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    Event date: 2024.5

    Language:English   Presentation type:Poster presentation  

  22. Folding of a Thin Film on a Fiber-Incorporated Soft Substrate

    S. Hayashi, S. Nagashima, A. Solhtalab, S. Matsubara, M. J. Razavi, D. Okumura

    IUTAM Symposium on Mechanics of Soft Materials and Soft Robots  2024.5.17 

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    Event date: 2024.5

    Language:English   Presentation type:Poster presentation  

  23. Effect of Material Properties on Crease Formation in Gent–Gent Elastomer

    S. Matsubara, K. Kobayashi, T. Ishida, S. Nagashima, D. Okumura

    IUTAM Symposium on Mechanics of Soft Materials and Soft Robots  2024.5.17 

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    Event date: 2024.5

    Language:English   Presentation type:Poster presentation  

  24. 表面張力による固体と液体の相互運動のフェーズフィールド解析

    纐纈 拓己, 中谷 彰宏, 土井 祐介, 永島 壮

    日本機械学会 関西支部第99期定時総会・講演会  2024.3.16 

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    Event date: 2024.3

    Presentation type:Oral presentation (general)  

  25. 薄膜リンクルの寸法および配向に及ぼす成膜角度の影響

    大久保 建, 永島 壮, 松原, 成志朗, 奥村 大

    日本材料学会 東海支部第18回学術講演会  2024.3.8 

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    Event date: 2024.3

    Presentation type:Oral presentation (general)  

  26. 水の表面張力によるリンクル変形の数値解析

    太田 陸斗, 永島 壮, 奥村 大, 松原 成志朗

    日本機械学会 東海支部第73期総会・講演会(TEC24)  2024.3.6 

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    Event date: 2024.3

    Presentation type:Oral presentation (general)  

  27. フーリエ変換を用いた膜・基盤構造体の表面パターン解析

    中島 大貴, 松原 成志朗, 永島 壮, 奥村 大

    日本機械学会 東海支部第73期総会・講演会(TEC24)  2024.3.6 

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    Event date: 2024.3

    Presentation type:Oral presentation (general)  

  28. ノンレシプロカルゲルの円筒押込み解析における大変形領域の安定化

    野々垣 翔真, 松原 成志朗, 永島 壮, 奥村 大

    日本機械学会 東海支部第73期総会・講演会(TEC24)  2024.3.6 

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    Event date: 2024.3

    Presentation type:Oral presentation (general)  

  29. 表面パターン解析におけるB-spline関数の性能評価

    松原 成志朗, 平川 明莉, 永島 壮, 奥村 大

    日本機械学会 東海支部第73期総会・講演会(TEC24)  2024.3.6 

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    Event date: 2024.3

    Presentation type:Oral presentation (general)  

  30. 座屈・座屈後解析によるノンレシプロカルゲルの引張圧縮非対称性評価

    布施 卓馬, 松原 成志朗, 永島 壮, 奥村 大

    日本機械学会 東海支部第73期総会・講演会(TEC24)  2024.3.6 

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    Event date: 2024.3

    Presentation type:Oral presentation (general)  

  31. ノンレシプロカルゲルの円筒押込み大変形解析

    野々垣 翔真, 松原 成志朗, 永島 壮, 奥村 大

    計算数理工学シンポジウム2023  2023.11.24 

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    Event date: 2023.11

    Presentation type:Oral presentation (general)  

  32. クリースの発達過程に対する影響因子の調査

    石田 竜也, 永島 壮, 松原 成志朗, 奥村 大

    計算数理工学シンポジウム2023  2023.11.25 

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    Event date: 2023.11

    Presentation type:Oral presentation (general)  

  33. 均質化解析によるノンレシプロカルゲルの引張・圧縮非対称性評価

    布施 卓馬, 松原 成志朗, 永島 壮, 奥村 大

    計算数理工学シンポジウム2023  2023.11.24 

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    Event date: 2023.11

    Presentation type:Oral presentation (general)  

  34. リンクル―クリース変態における分岐経路の非線形有限要素解析

    石田 竜也, 松原 成志朗, 永島 壮, 奥村 大

    日本機械学会 第36回計算力学講演会(CMD2023)  2023.10.25 

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    Event date: 2023.10

    Language:Japanese   Presentation type:Oral presentation (general)  

  35. チューブの外壁形状によるクリース発生角度の制御

    神 圭佑, 松原 成志朗, 永島 壮, 奥村 大

    日本機械学会 第36回計算力学講演会(CMD2023)  2023.10.25 

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    Event date: 2023.10

    Presentation type:Oral presentation (general)  

  36. 水の表面張力によるリンクルーフォールド変態の数値解析

    太田 陸斗, 永島 壮, 奥村 大, 松原 成志朗

    日本機械学会 第36回計算力学講演会(CMD2023)  2023.10.25 

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    Event date: 2023.10

    Presentation type:Oral presentation (general)  

  37. 非・微圧縮性を有する散逸固体の熱・機械連成混合型 Isogeometric 解析

    松原 成志朗, 永島 壮, 奥村 大

    日本機械学会 第36回計算力学講演会(CMD2023)  2023.10.25 

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    Event date: 2023.10

    Presentation type:Oral presentation (general)  

  38. ノンレシプロカルゲルの微視的座屈・座屈後解析

    布施 卓馬, 奥村 大, 永島 壮, 松原 成志朗

    日本機械学会 第36回計算力学講演会(CMD2023)  2023.10.25 

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    Event date: 2023.10

    Presentation type:Oral presentation (general)  

  39. 重合促進剤によるゲル化誘起パターンの制御

    程 相輔, 永島 壮, 松原 成志朗, 奥村 大

    日本機械学会 M&M2023材料力学カンファレンス  2023.9.27 

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    Event date: 2023.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  40. 膨潤エラストマーに対する高分子鎖の伸び切り効果を考慮した溶媒拡散・変形連成解析

    松原 成志朗, 永島 壮, 奥村 大

    日本機械学会 M&M2023材料力学カンファレンス  2023.9.27 

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    Event date: 2023.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  41. 二層モデルを用いたノンレシプロカルゲルの均質化解析

    布施 卓馬, 奥村 大, 永島 壮, 松原 成志朗

    日本機械学会 M&M2023材料力学カンファレンス  2023.9.27 

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    Event date: 2023.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  42. 異方濡れ特性を有する階層凹凸パターンのボトムアップ形成

    永島 壮, 鈴木 航, 松原 成志朗, 奥村 大

    日本機械学会 M&M2023材料力学カンファレンス  2023.9.28 

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    Event date: 2023.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  43. 二層ハイドロゲルのパターン形成に及ぼす厚さ勾配の影響

    内山 航, 永島 壮, 松原 成志朗, 奥村 大

    日本機械学会 M&M2023材料力学カンファレンス  2023.9.28 

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    Event date: 2023.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  44. リンクル―クリース変態のための連鎖反応モデル

    石田 竜也, 松原 成志朗, 永島 壮, 奥村 大

    日本機械学会 M&M2023材料力学カンファレンス  2023.9.28 

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    Event date: 2023.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  45. リッジパターンの発現に至る第二分岐特性

    奥村 大, 太田 陸斗, 松原 成志朗, 永島 壮

    日本機械学会 M&M2023材料力学カンファレンス  2023.9.28 

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    Event date: 2023.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  46. ゲル化誘起パターンの形成に及ぼす重合促進剤の影響

    程 相輔, 永島 壮, 松原成志朗, 奥村 大

    日本材料学会 第72期学術講演会  2023.5.29 

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    Event date: 2023.5

    Language:Japanese   Presentation type:Oral presentation (general)  

  47. 金属ナノ薄膜の変形による階層凹凸パターンの形成

    永島 壮, 鈴木 航, 松原成志朗, 奥村 大

    日本材料学会 第8回マルチスケール材料力学シンポジウム  2023.5.28 

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    Event date: 2023.5

    Language:Japanese   Presentation type:Poster presentation  

  48. リッジパターン変態のプレストレッチ依存性と分岐座屈特性

    田中大地, 若林駿人, 松原成志朗, 永島 壮, 奥村 大

    日本計算数理工学会計算数理工学シンポジウム 2022  2022.12.16 

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    Event date: 2022.12

    Language:Japanese   Presentation type:Oral presentation (general)  

  49. Bio-inspired hierarchical patterns for tunable anisotropic wetting International conference

    S. Nagashima, K. Suzuki, S. Matsubara, D. Okumura

    The 32nd Annual Meeting of MRS-J  2022.12.6 

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    Event date: 2022.12

    Language:English   Presentation type:Poster presentation  

  50. 非弾性複合材料に対する微視的伝熱現象の非定常性を考慮したマルチ スケール解析

    松原成志朗, 永島 壮, 奥村 大

    日本機械学会第 35 回計算力学講演会(CMD2022)  2022.11.17 

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    Event date: 2022.11

    Language:Japanese   Presentation type:Oral presentation (general)  

  51. クリースのスケール・メッシュ依存性に及ぼす負荷条件の影響

    荻野敦也, 松原成志朗, 永島 壮, 奥村 大

    日本機械学会 第35回計算力学講演会(CMD2022)  2022.11.17 

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    Event date: 2022.11

    Language:Japanese   Presentation type:Oral presentation (general)  

  52. ソフトマテリアルの表面不安定に及ぼす底面の影響

    中島大貴, 松原成志朗, 永島 壮, 奥村 大

    日本 機械学会第 35 回計算力学講演会(CMD2022)  2022.11.16 

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    Event date: 2022.11

    Language:Japanese   Presentation type:Oral presentation (general)  

  53. 微圧縮性固体に対する熱・機械連成解析手法の開発

    村松 亮, 松原成志朗, 奥村 大, 永島 壮

    日本 機械学会第 35 回計算力学講演会(CMD2022)  2022.11.16 

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    Event date: 2022.11

    Language:Japanese   Presentation type:Oral presentation (general)  

  54. 金属薄膜リッジパターンを用いた異方濡れの制御

    鈴木 航, 永島 壮, 松原成志朗, 奥村 大

    日本機械学会最適化シンポジウム 2022(OPTIS2022)  2022.11.13 

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    Event date: 2022.11

    Language:Japanese   Presentation type:Oral presentation (general)  

  55. チューブ内壁に生じるクリースの伝播及び間隔の制御

    神 圭佑, 松原成志朗, 永島 壮, 奥村 大

    日本機械学会最適化シンポジウム 2022(OPTIS2022)  2022.11.12 

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    Event date: 2022.11

    Language:Japanese   Presentation type:Oral presentation (general)  

  56. リンクルからクリースへの変態制御のための非線形有限要素解析

    石田竜也, 荻野敦也, 松原成志朗, 永島 壮, 奥村 大

    日本機械学会最適化シンポジウム 2022(OPTIS2022)  2022.11.12 

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    Event date: 2022.11

    Language:Japanese   Presentation type:Oral presentation (general)  

  57. 増分ポテンシャル法による微圧縮性材料の熱・機械連成解析

    村松 亮, 松原成志朗, 永島 壮, 奥村 大

    日本機械学会最適化シンポジウム 2022(OPTIS2022)  2022.11.12 

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    Event date: 2022.11

    Language:Japanese   Presentation type:Oral presentation (general)  

  58. 圧縮変形下の金属ナノ薄膜に生じるリッジパターンの異方濡れ特性

    鈴木 航, 永島 壮, 松原成志朗, 奥村 大

    日本機械学会 M&M2022 材料力学カンファレンス  2022.9.27 

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    Event date: 2022.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  59. クリースの発生・発達に対するスケールとメッシュの依存 性

    荻野敦也, 松原成志朗, 永島 壮, 奥村 大

    日本機械学会 M&M2022 材料力学カンファレンス  2022.9.27 

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    Event date: 2022.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  60. ハイドロゲルの線形粘弾性特性評価のための時間・膨潤重ね合わせの原理

    松原成志朗, 高島 晃, 永島 壮, 伊田翔平, 田中 展, 内田 真, 奥村 大

    日本機械学会 M&M2022 材料力学カンファレンス  2022.9.27 

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    Event date: 2022.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  61. 切り欠きから伝播するクリースの周期間隔

    奥村 大, 星 亮吾, 中島大貴, 松原成志朗, 永島 壮

    日 本機械学会 M&M2022 材料力学カンファレンス  2022.9.27 

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    Event date: 2022.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  62. Morphological evolution of surface patterns in hydrogel bilayers International conference

    S. Nagashima, N. Akamatsu, S. Matsubara, S. Ida, H. Tanaka, M. Uchida, D. Okumura

    The 15th World Congress on Computatinoal Mechanics–The 8the Asian Pacific Congress on Computational Mechanics (WCCM–APCOM2022)  2022.8.1 

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    Event date: 2022.7 - 2022.8

    Language:English   Presentation type:Oral presentation (general)  

  63. 固体の表面不安定が駆動する凹凸パターンの自律形成 Invited

    永島 壮,奥村 大,中谷彰宏

    日本機械学会第34回バイオエンジニアリング講演会  2022.6.25 

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    Event date: 2022.6

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

  64. 固体の表面不安定が駆動する凹凸パターンの自律形成 Invited

    永島 壮, 奥村 大, 中谷彰宏

    日本機械学会 第34回バイオエンジニアリング講演会  2022.6.25 

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    Event date: 2022.6

    Presentation type:Oral presentation (invited, special)  

  65. 微圧縮非弾性材料の熱・機械強連成解析

    松原成志朗,村松 亮,永島 壮,奥村 大

    日本計算工学会第27回計算工学講演会  2022.6.2 

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    Event date: 2022.6

    Language:Japanese   Presentation type:Oral presentation (general)  

  66. 微圧縮非弾性材料の熱・機械強連成解析

    松原成志朗, 村松 亮, 永島 壮, 奥村 大

    日本計算工学会第27回計算工学講演会  2022.6.2 

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    Event date: 2022.6

    Presentation type:Oral presentation (general)  

  67. 2層構造体のリンクル解析に対するIsogeometric分岐座屈解析法の基礎的検討

    平川明莉, 松原成志朗, 永島 壮, 奥村 大

    日本計算工学会第27回計算工学講演会  2022.6.3 

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    Event date: 2022.6

    Presentation type:Oral presentation (general)  

  68. リンクルからリッジへのパターン変態の有限要素分岐座屈解析

    田中大地, 若林駿斗, 松原成志朗, 永島 壮, 奥村 大

    日本計算工学会第27回計算工学講演会  2022.6.2 

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    Event date: 2022.6

    Presentation type:Oral presentation (general)  

  69. 過渡膨潤過程におけるポリアクリルアミドゲルの粘弾性特性評価

    松原成志朗,高島晃,永島壮,伊田翔平,田中展,内田真,奥村大

    日本材料学会第71期学術講演会  2022.5.31 

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    Event date: 2022.5

    Language:Japanese   Presentation type:Oral presentation (general)  

  70. 二層材料の表面不安定現象に立脚したナノ・マイク ロシステムのボトムアップ創成 Invited

    永島 壮

    日本材料学会第2回マルチスケールマテリアルモデリン グシンポジウム(第7回マルチスケール材 料力学シンポジウム)  2022.5.31 

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    Event date: 2022.5

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

  71. 二層材料の表面不安定現象に立脚したナノ・マイクロシステムのボトムアップ創成 Invited

    永島 壮

    日本材料学会 第2回マルチスケールマテリアルモデリングシンポジウム(第7回マルチスケール材料力学シンポジウム)  2022.5.31 

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    Event date: 2022.5

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

  72. 柔軟な基板に接着している薄膜に発生するしわの二次元パターンの比較

    纐纈拓己,三須 龍,土井祐介,永島 壮,中谷彰宏

    日本機械学会関西支部 2021年度関西学生会卒業研究発表講演会  2022.3.15 

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    Event date: 2022.3

    Language:Japanese   Presentation type:Oral presentation (general)  

  73. 二層ハイドロゲル表面に自律形成する凹凸パターン

    永島 壮, 赤松直紀, 松原成志朗, 奥村 大

    日本材料学会 東海支部第16回学術講演会  2022.3.3  日本材料学会

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    Event date: 2022.3

    Language:Japanese   Presentation type:Oral presentation (general)  

  74. Diversity of bifurcations and deformations on films bonded to soft substrates International conference

    S. Kikuchi, S. Matsubara, S. Nagashima, D. Okumura

    American Society of Mechanical Engineers, International Mechanical Engineering Congress & Exposition (IMECE2021)  2021.11.2 

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    Event date: 2021.11

    Language:English   Presentation type:Oral presentation (general)  

  75. Study on the viscoelastic properties of polyacrylamide hydrogels during transient swelling International conference

    A. Takashima, S. Matsubara, S. Nagashima, M. Uchida, H. Tanaka, S. Ida, D. Okumura

    American Society of Mechanical Engineers, International Mechanical Engineering Congress & Exposition (IMECE2021)  2021.11.2 

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    Event date: 2021.11

    Language:English   Presentation type:Oral presentation (general)  

  76. Effects of initial imperfection and mech resolution on finite element analysis of crease initiation and propagation International conference

    R. Hoshi, S. Matsubara, S. Nagashima, D. Okumura

    American Society of Mechanical Engineers, International Mechanical Engineering Congress & Exposition (IMECE2021)  2021.11.2 

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    Event date: 2021.11

    Language:English   Presentation type:Oral presentation (general)  

  77. Capillary-induced wrinkle-to-fold transitions International conference

    S. Nagashima, A. Nakatani

    American Society of Mechanical Engineers, International Mechanical Engineering Congress & Exposition (IMECE2021)  2021.11.2 

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    Event date: 2021.11

    Language:English   Presentation type:Oral presentation (general)  

  78. Vノッチ欠陥によって誘起されるクリースの伝播

    星 亮吾, 荻野敦也, 松原成志朗, 永島 壮, 奥村 大

    日本機械学会第34回計算力学講演会(CMD2021)  2021.9.21 

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    Event date: 2021.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  79. 膜基盤構造体の分岐座屈解析に及ぼすヤング率比及び幾何学的不整量の影響

    菊池正太郎, 松原成志朗, 永島 壮, 奥村 大

    日本機械学会第34回計算力学講演会(CMD2021)  2021.9.21 

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    Event date: 2021.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  80. エラストマーの二次元表面不安定解析に及ぼすV字型ノッチの影響

    荻野敦也,星 亮吾,松原成志朗,永島 壮,奥村 大

    日本機械学会 第34回計算力学講演会(CMD2021)  2021.9.21 

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    Event date: 2021.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  81. Vノッチ欠陥によって誘起されるクリースの伝播

    星 亮吾, 荻野敦也, 松原成志朗, 永島 壮, 奥村 大

    日本機械学会M&M2021材料力学カンファレンス  2021.9.16 

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    Event date: 2021.9

    Presentation type:Oral presentation (general)  

  82. 膜・基盤構造体の表面パターン発達における分岐と変形

    菊池正太郎, 松原成志朗, 永島 壮, 奥村 大

    日本機械学会M&M2021材料力学カンファレンス  2021.9.15 

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    Event date: 2021.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  83. 水滴が接触する薄膜-基板系表面に生成する凹凸パターン

    永島 壮, 中谷彰宏

    日本機械学会 M&M2021材料力学カンファレンス  2021.9.16  日本機械学会

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    Event date: 2021.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  84. V字型ノッチのリンクル・クリース表面不安定解析に及ぼす影響

    荻野敦也, 星 亮吾, 松原成志朗, 永島 壮, 奥村 大

    日本機械学会M&M2021材料力学カンファレンス  2021.9.15 

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    Event date: 2021.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  85. 非晶性樹脂の変形による自己発熱を考慮した有限要素解析

    松原成志朗,奥村 大,永島 壮,寺田賢二郎

    日本機械学会M&M2021材料力学カンファレンス  2021.9.15 

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    Event date: 2021.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  86. 過渡膨潤状態におけるアクリルアミドハイドロゲルの弾性・粘性特性評価

    高島 晃,松原成志朗,永島 壮,伊田翔平,田中 展,内田 真,奥村 大

    日本機械学会M&M2021材料力学カンファレンス  2021.9.15 

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    Event date: 2021.9

    Presentation type:Oral presentation (general)  

  87. ゲル材料の弾性・膨潤特性に及ぼす分子鎖伸び切りの影響

    奥村 大,古谷徹朗,松原成志朗,永島 壮

    日本機械学会M&M2021材料力学カンファレンス  2021.9.15 

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    Event date: 2021.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  88. アンドロイド開発のための人顔面右側部の様々な動作に対するひずみ分布測定

    三須 龍, 石原 尚, 土井祐介, 永島 壮, 中谷彰宏

    日本機械学会関西学生会2019年度学生員卒業研究発表講演会  2021.3.10 

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  89. 非弾性衝突する多粒子系の自己組織的挙動に関する分子動力学解析

    丸岡 漠, 永島 壮, 石原 尚, 土井祐介, 中谷彰宏

    2021.3.10 

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  90. 長距離非線形相互作用によるエネルギー局在過程と緩和過程の解析

    米田麟太郎, 土井祐介, 永島 壮, 中谷彰宏

    日本機械学会関西学生会2020年度学生員卒業研究発表講演会  2021.3.16 

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  91. 過渡膨潤状態におけるアクリルアミドハイドロゲルの弾性・粘性特性評

    高島 晃, 松原成志朗, 永島 壮, 伊田翔平, 田中 展, 内田 真, 奥村 大

    日本機械学会M&M2021材料力学カンファレンス  2021.9.15 

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  92. 真珠層材料のき裂先端近傍の応力解析

    叶 笑言, 永島 壮, 石原 尚, 土井祐介, 中谷彰宏

    日本機械学会関西支部第95期定時総会講演会  2021.3.12 

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  93. 液滴が接触する弾性基板の変形解析に関する基礎的検討

    飯干勇真, 松岡典幸, 永島 壮, 土井祐介, 中谷彰宏

    日本機械学会関西学生会2020年度学生員卒業研究発表講演会  2021.3.16 

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  94. 機械学習を用いた微視構造を有する固体の力学特性の推定

    小金丸澄, 小池康裕, 永島 壮, 土井祐介, 中谷彰宏

    日本機械学会関西学生会2020年度学生員卒業研究発表講演会  2021.3.16 

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  95. 弛緩部と剛体拘束部を有するテンセグリティ構造体の動力学解析

    長瀧知也, 永島 壮, 土井祐介, 中谷彰宏

    日本機械学会関西学生会2020年度学生員卒業研究発表講演会  2021.3.16 

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  96. 固体と相互作用する液滴の挙動のPhase-field解析

    松岡典幸, 永島 壮, 土井祐介, 中谷彰宏

    日本機械学会関西支部第96期定時総会講演会  2021.3.18 

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  97. 双安定な微視的変形機構を内在する周期的セル構造体の力学特性評価

    石村祐也, 中谷彰宏, 土井祐介, 永島 壮

    日本機械学会関西支部第96期定時総会講演会  2021.3.18 

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  98. 分子動力学法による点欠陥と非線形エネルギー局在の相互作用の解析

    瀧沢良太, 土井祐介, 永島 壮, 中谷彰宏

    日本機械学会関西学生会2020年度学生員卒業研究発表講演会  2021.3.16 

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  99. フォノニック結晶(PnC)の非線形波動伝搬解析

    高柳 純, 土井祐介, 永島 壮, 中谷彰宏

    日本機械学会関 西学生会2020年度学生員卒業研究発表講演会  2021.3.16 

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  100. テンソルネットワーク法を用いた断面画像からの特徴抽出に基づく力学特性の推定

    増田椋太, 中谷彰宏, 土井祐介, 永島 壮

    日本機械学会関西学生会2020年度学生員卒業研究発表講演会  2021.3.16 

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  101. セル・オートマトンによる内部幾何構造の時間発展と力学特性に関する研究

    小池康裕, 永島 壮, 土井祐介, 中谷彰宏

    日本機械学会関西支部第96期定時総会講演会  2021.3.18 

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  102. エラストマーの二次元表面不安定解析に及ぼすV字型ノッチの影響

    荻野敦也, 星 亮吾, 松原成志朗, 永島 壮, 奥村 大

    日本機械学会第34回計算力学講演会(CMD2021)  2021.9.21 

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  103. 上界解析による表面パターンの分岐特性およびエネルギー 評価

    高本陽星, 松原成志朗, 永島壮, 田中展, 奥村大

    本機械学会東海支部第74 期講演会TOKAI ENGINEERING COMPLEX 2025(TEC25)  2025.3.14 

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  104. 非・微圧縮性を有する散逸固体の熱・機械連成混合型 Isogeometric 解析

    松原 成志朗, 永島 壮, 奥村 大

    日本機械学会 第36回計算力学講演会(CMD2023)  2023.10.25 

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  105. クリースの発達過程に対する影響因子の調査

    石田 竜也, 永島 壮, 松原 成志朗, 奥村 大

    計算数理工学シンポジウム2023  2023.11.25 

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  106. ゲル化誘起パターンの形成に及ぼす重合促進剤の影響

    程 相輔, 永島 壮, 松原成志朗, 奥村 大

    日本材料学会 第72期学術講演会  2023.5.29 

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  107. チューブの外壁形状によるクリース発生角度の制御

    神 圭佑, 松原 成志朗, 永島 壮, 奥村 大

    日本機械学会 第36回計算力学講演会(CMD2023)  2023.10.25 

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  108. ノンレシプロカルゲルの円筒押込み大変形解析

    野々垣 翔真, 松原 成志朗, 永島 壮, 奥村 大

    計算数理工学シンポジウム2023  2023.11.24 

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  109. ノンレシプロカルゲルの円筒押込み解析における大変形領域の安定化

    野々垣 翔真, 松原 成志朗, 永島 壮, 奥村 大

    日本機械学会 東海支部第73期総会・講演会(TEC24)  2024.3.6 

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  110. ノンレシプロカルゲルの微視的座屈・座屈後解析

    布施 卓馬, 奥村 大, 永島 壮, 松原 成志朗

    日本機械学会 第36回計算力学講演会(CMD2023)  2023.10.25 

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  111. フーリエ変換を用いた膜・基盤構造体の表面パターン解析

    中島 大貴, 松原 成志朗, 永島 壮, 奥村 大

    日本機械学会 東海支部第73期総会・講演会(TEC24)  2024.3.6 

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  112. リッジパターンの発現に至る第二分岐特性

    奥村 大, 太田 陸斗, 松原 成志朗, 永島 壮

    日本機械学会 M&M2023材料力学カンファレンス  2023.9.28 

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  113. リンクル―クリース変態における分岐経路の非線形有限要素解析

    石田 竜也, 松原 成志朗, 永島 壮, 奥村 大

    日本機械学会 第36回計算力学講演会(CMD2023)  2023.10.25 

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  114. リンクル―クリース変態のための連鎖反応モデル

    石田 竜也, 松原 成志朗, 永島 壮, 奥村 大

    日本機械学会 M&M2023材料力学カンファレンス  2023.9.28 

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  115. 二層ハイドロゲルのパターン形成に及ぼす厚さ勾配の影響

    内山 航, 永島 壮, 松原 成志朗, 奥村 大

    日本機械学会 M&M2023材料力学カンファレンス  2023.9.28 

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  116. 二層モデルを用いたノンレシプロカルゲルの均質化解析

    布施 卓馬, 奥村 大, 永島 壮, 松原 成志朗

    日本機械学会 M&M2023材料力学カンファレンス  2023.9.27 

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  117. 均質化解析によるノンレシプロカルゲルの引張・圧縮非対称性評価

    布施 卓馬, 松原 成志朗, 永島 壮, 奥村 大

    計算数理工学シンポジウム2023  2023.11.24 

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  118. 座屈・座屈後解析によるノンレシプロカルゲルの引張圧縮非対称性評価

    布施 卓馬, 松原 成志朗, 永島 壮, 奥村 大

    日本機械学会 東海支部第73期総会・講演会(TEC24)  2024.3.6 

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  119. 水の表面張力によるリンクルーフォールド変態の数値解析

    太田 陸斗, 永島 壮, 奥村 大, 松原 成志朗

    日本機械学会 第36回計算力学講演会(CMD2023)  2023.10.25 

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  120. 水の表面張力によるリンクル変形の数値解析

    太田 陸斗, 永島 壮, 奥村 大, 松原 成志朗

    日本機械学会 東海支部第73期総会・講演会(TEC24)  2024.3.6 

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  121. 異方濡れ特性を有する階層凹凸パターンのボトムアップ形成

    永島 壮, 鈴木 航, 松原 成志朗, 奥村 大

    日本機械学会 M&M2023材料力学カンファレンス  2023.9.28 

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  122. 膨潤エラストマーに対する高分子鎖の伸び切り効果を考慮した溶媒拡散・変形連成解析

    松原 成志朗, 永島 壮, 奥村 大

    日本機械学会 M&M2023材料力学カンファレンス  2023.9.27 

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  123. 薄膜リンクルの寸法および配向に及ぼす成膜角度の影響

    大久保 建, 永島 壮, 松原, 成志朗, 奥村 大

    日本材料学会 東海支部第18回学術講演会  2024.3.8 

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  124. 表面パターン解析におけるB-spline関数の性能評価

    松原 成志朗, 平川 明莉, 永島 壮, 奥村 大

    日本機械学会 東海支部第73期総会・講演会(TEC24)  2024.3.6 

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  125. 表面張力による固体と液体の相互運動のフェーズフィールド解析

    纐纈 拓己, 中谷 彰宏, 土井 祐介, 永島 壮

    日本機械学会 関西支部第99期定時総会・講演会  2024.3.16 

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  126. 重合促進剤によるゲル化誘起パターンの制御

    程 相輔, 永島 壮, 松原 成志朗, 奥村 大

    日本機械学会 M&M2023材料力学カンファレンス  2023.9.27 

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  127. 金属ナノ薄膜の変形による階層凹凸パターンの形成

    永島 壮, 鈴木 航, 松原成志朗, 奥村 大

    日本材料学会 第8回マルチスケール材料力学シンポジウム  2023.5.28 

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  128. ヘリンボーンパターンの分岐座屈解析におけるヤング率比依存性

    山内文陽, 松原成志朗, 永島壮, 奥村大

    日本機械学会東海支部第74 期講演会TOKAI ENGINEERING COMPLEX 2025(TEC25)  2025.3.14 

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  129. ヘリンボーンパターン形成に及ぼす繊維充填の影響

    岩田直大, 松原成志朗, 永島壮, 奥村大

    第30回計算工学講演会  2025.6.4 

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  130. 表面不安定現象を用いたヘリンボーンパターンの作製.

    松川昂士郎, 大久保建, 永島壮, 松原成志朗, 奥村大

    日本材料学会東海支部第19 回学術講演会  2025.3.4 

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  131. Finite element analysis of abnormal mechanical responses in a nonreciprocal gel.

    S. Nonogaki, Y. Zhang, S. Matsubara, S. Nagashima, Y. Ishida, D. Okumura

    The 9th Asian Pacific Congress on Computational Mechanics/The 7th Australasian Conference on Computational Mechanics (APCOM–ACCM2025)  2025.12.8 

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  132. Experimental study on the buckling of DNA nanowires on elastomer substrates.

    I. Hihara, S. Nagashima, S. Matsubara, D. Okumura

    The JSEM International Conference on Experimental Mechanics (JCEM2025)  2025.7.22 

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  133. Experimental study on the buckling behavior of silver nanowires on elastomer substrates.

    R. Murata, S. Nagashima, S. Matsubara, D. Okumura

    The JSEM International Conference on Experimental Mechanics (JCEM2025)  2025.7.24 

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    Language:English   Presentation type:Poster presentation  

  134. 微圧縮性固体の熱・機械連成解析におけるF-bar 法と混合法の性能比較

    松原成志朗, 永島壮, 奥村大

    日本機械学会東海支部第74期講演会TOKAI ENGINEERING COMPLEX 2025(TEC25)  2025.3.14 

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    Language:Japanese   Presentation type:Oral presentation (general)  

  135. 液体接触環境における表面不安定パターンの形成

    永島壮, 松原成志朗, 奥村大

    2025.5.25 

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    Language:Japanese   Presentation type:Oral presentation (general)  

  136. 液滴接触下におけるリンクル変形の数値解析

    岡本怜之, 永島壮, 松原成志朗, 奥村大

    日本機械学会東海支部第74期講演会TOKAI ENGINEERING COMPLEX 2025(TEC25)  2025.3.14 

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    Language:Japanese   Presentation type:Oral presentation (general)  

  137. 薄膜の二軸圧縮変形によるヘリンボーンパターンの形成

    松川昂士郎, 永島壮, 松原成志朗, 奥村大

    日本材料学会第74期学術講演会  2025.6.1 

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    Language:Japanese   Presentation type:Oral presentation (general)  

  138. Finite element analysis of wrinkle deforma- tions in film–substrate bilayers induced by water droplets.

    R. Okamoto, S. Nagashima, S. Matsubara, D. Okumura

    The 9th Asian Pacific Congress on Computational Mechanics/The 7th Australasian Conference on Computational Mechanics (APCOM–ACCM2025)  2025.12.8 

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    Language:English   Presentation type:Oral presentation (general)  

  139. プレパターン基盤を用いた階層薄膜リンクルの作製

    新居滉大, 永島壮, 松原成志朗, 奥村大

    日本材料学会 東海支部第19 回学術講演会  2025.3.4 

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  140. プレパターン基板を用いた階層リンクルの作製

    新居滉大, 永島壮, 松原成志朗, 奥村大

    日本材料学会第74期学術講演会  2025.6.1 

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    Language:Japanese   Presentation type:Oral presentation (general)  

  141. ノンレシプロカルゲルのPoynting効果解析

    野々垣翔真, Yunlei Zhang, 松原成志朗, 永島壮, 石田康博, 奥村大

    日本機械学会東海支部第74 期講演会TOKAI ENGINEERING COMPLEX 2025(TEC25)  2025.3.14 

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  142. クリース形成に及ぼす負荷条件と不変量の影響

    岡村太暉, 松原成志朗, 永島壮, 奥村大

    日本機械学会東海支部第74期講演会TOKAI ENGINEERING COMPLEX 2025(TEC25)  2025.3.14 

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    Language:Japanese   Presentation type:Oral presentation (general)  

  143. Water-responsive surface instabilities in soft materials

    S. Nagashima, D. Okumura

    Materials Research Meeting 2025 (MRM2025)  2025.12.8 

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  144. Surrogate modeling of nonreciprocal mechanical behavior reflecting microscopic tension-compression asymmetry.

    Y. Inamae, S. Matsubara, S. Nagashima, D. Okumura

    The 9th Asian Pacific Congress on Computational Mechanics/The 7th Australasian Conference on Computational Mechanics (APCOM–ACCM2025)  2025.12.8 

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    Language:English   Presentation type:Oral presentation (general)  

  145. Surrogate macroscopic constitutive model of a nonreciprocal gel.

    Y. Inamae, S. Matsubara, S. Nagashima, D. Okumura

    The 4th International Conference on Computational Engineering and Science for Safety and Environment Problems (COMPSAFE2025)  2025.7.2 

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  146. Soft wetting coupled with mechanical in- stabilities in elastic nanofilms.

    S. Nagashima, R. Okamoto, S. Matsubara, D. Okumura

    The 18th Asian Congress of Fluid Mechanics (18ACFM)  2025.9.11 

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    Language:English   Presentation type:Oral presentation (general)  

  147. Instability-induced herringbone patterns in thin films on soft substrates.

    K. Matsukawa, S. Nagashima, S. Matsubara, D. Okumura

    The JSEM International Conference on Experimental Mechanics (JCEM2025)  2025.7.22 

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  148. Gent–Gent 超弾性体のクリース形成における材料特性の影響

    松原成志朗, 岡村太暉, 永島壮, 奥村大

    2025.6.4 

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    Language:Japanese   Presentation type:Oral presentation (general)  

  149. Formation of hierarchical wrinkles using prepat- terned substrates.

    K. Nii, S. Nagashima, S. Matsubara, D. Okumura

    The JSEM International Conference on Experimental Mechanics (JCEM2025)  2025.7.24 

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Research Project for Joint Research, Competitive Funding, etc. 2

  1. 膜・基板構造体表面に自律形成するリンクル・フォールド共存パターンに関する研究

    2022.4 - 2023.3

    一般財団法人 伊藤忠兵衛基金 2022年度学術研究助成金 

    永島 壮

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    Authorship:Principal investigator  Grant type:Competitive

    Grant amount:\500000

  2. 植物器官に着想を得た階層凹凸パターンのボトムアップ形成と異方濡れ表面の創製

    2022.4 - 2023.3

    公益財団法人 大下財団 2022年度研究助成 

    永島 壮

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    Authorship:Principal investigator  Grant type:Competitive

    Grant amount:\1000000

KAKENHI (Grants-in-Aid for Scientific Research) 10

  1. 圧電性ナノベルトによる形状可変表面の創出と再配置ナノマニピュレーションへの展開

    Grant number:25K22055  2025.6 - 2027.3

    科学研究費助成事業  挑戦的研究(萌芽)

    徳 悠葵, 永島 壮

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    Authorship:Coinvestigator(s) 

    本研究は独自の表面形状制御が可能な機能性薄膜をマニピュレータに実装し,把持・再配置を同時に達成する.本目標の達成は未だ類を見ない高度なナノマニピュレーションの実現を意味し,ナノ材料応用の多くが複合材料の分散材に留まっている学術の体系を大きく変革・転換させる潜在性を有している.すなわち単一ナノ材料の基礎実験だけでなく,負の屈折率といったメタ性質の発現など3次元的に複雑な操作が必須の応用研究にも大いに貢献でき,ナノテクノロジー分野に対する挑戦的研究としての意義は極めて大きい.

  2. Controlling Surface Instabilities via Elastocapillarity

    Grant number:25H00706  2025.4 - 2028.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)

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    Authorship:Principal investigator 

    Grant amount:\47710000 ( Direct Cost: \36700000 、 Indirect Cost:\11010000 )

  3. Tuning mechanical activity through multiscale optimal design of odd elastic lattice structure

    Grant number:25K01119  2025.4 - 2028.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

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    Authorship:Coinvestigator(s) 

  4. Development of ruga lithography for the fabrication of single-nanoscale mechanical elements

    2023.4 - 2030.3

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    Authorship:Principal investigator 

  5. 摂動解析の動的非線形化による凸凹パターン変態の全貌解明

    Grant number:22K18284  2022.6 - 2025.3

    日本学術振興会  科学研究費助成事業  挑戦的研究(開拓)

    奥村 大, 永島 壮, 松原 成志朗

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    Authorship:Coinvestigator(s) 

    以下のように研究項目①~④を設定し研究目的を遂行する.
    研究項目① 摂動解析の動的非線形化による孤立クリースの基礎的解析
    研究項目② クリース解析におけるメッシュ依存性の制御方法の解析基盤構築
    研究項目③ プレパターンを用いた3次元凸凹パターン変態の評価・観察手法構築
    研究項目④ 凸凹パターン変態の全貌解明と検証実験
    本研究では,摂動解析の動的非線形化による凸凹パターン変態の全貌解明を目的とする研究課題に取り組んでおり,今年度の研究業績は以下のようにまとめられる.摂動解析の動的非線形化の研究項目について,この手法を用いて,リンクル開始点からクリース開始点に繋がる不安定経路の存在を明らかにし,国内会議だけでなく,国際会議での発表を米国機械学会の主要な講演会であるIMECE2023で行い,不安定変形を専門とする研究者から高い評価を受けた.固体と構造の力学問題で伝統のあるInternational Journal of Solids and Structuresにも掲載された.この成果によって,リンクル・クリース間のこれまでの謎の大半は解決された.研究をさらに発展させることを考えるとき,表面張力との相互作用によってクリースの発生や寸法といった特徴量は影響を受けるため,表面張力を考慮した実験や評価が重要となる.連成した手法ではないが,表面張力の影響を考慮した評価手法を構築し,クリース発生における物理と計算の側面についてもInternational Journal of Solids and Structuresに論文投稿し採択されている.さらに,プレパターンを用いた3次元凸凹パターン変態の評価・観察手法構築の研究項目では,ゲル化過程のダイナミクスに基づくパターン変態観察手法を用いた研究が発展しており,3次元プリンタによって生物の軸索構造を模倣するための型を作成し,基盤・軸索・膜で構成されるハイドロゲル構造体を作成しての実験観察を行っている.統計的な手法を用いて良好な結果が得られており,論文化に近いところにいる.そのほかにも,表面張力を駆動力とするパターン変態の実験と計算を進めており,想定以上に研究内容は幅広く展開しており,これまでにない表面制御機構の達成のための研究基盤構築は進んでいる.
    研究業績の概要に記載したように,研究課題は予想以上に順調に進んでいる.とりわけ,摂動解析の動的非線形化による孤立クリースの基礎的解析に成功しており,連鎖反応モデルを構築することによって,その特徴の説明を可能としたことは重要である.これまで未解明であった分岐座屈としてのリンクルと非線形分岐座屈と解釈されていたクリースの間の不安定変形や変形経路が明らかとなり,力学的に整合した理解が可能となった.この達成によって,本研究課題の最もコア部分の課題は解決された.現在は表面張力との相互作用の解析に取り組んでおり,単純な場合にはすでに成果があがっており,軟質体の非線形性が増す場合の影響について近々論文投稿する予定であり,異方性の影響についても解析を着手する予定である.これらは申請者らの極めて独自性の高い成果と研究計画に基づいている.実験についても,3次元プリンタを用いたハイドロゲルの複合構造体の作成のノウハウが蓄積されつつあり,再現性のあるパターン変態の実験観察ができるようになりつつある.今後に多様な展開を期待して継続して取り組んでおり,進捗状況は当初の計画以上に進展している.
    今後の推進方策として,3年目の最終年度は研究をさらに挑戦的に発展させることを考える.実験サイドとしては,プレパターンを用いた3次元凸凹パターン変態の評価・観察手法構築の研究項目に関連して,導入した超微細3次元プリンタを用いて作成したゲル複合構造体と結果として生じるパターンの間の関係を明らかにし,制御可能となるような影響因子や因果関係を明らかにする.工学応用を考え,所望のヘリンボンパターンを発現させるための制御機構の試行を進める.そのサポートとして,先述したように計算力学的な進歩は達成されており,援用することによって研究を加速させる.相乗効果はすでに得られており,さらに発展させることを目指す.

  6. Development of wrinkle nanolithography for the directed assembly of DNA nanowire arrays

    Grant number:22K18753  2022.6 - 2025.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Research (Exploratory)  Grant-in-Aid for Challenging Research (Exploratory)

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    Authorship:Principal investigator 

    Grant amount:\6370000 ( Direct Cost: \4900000 、 Indirect Cost:\1470000 )

  7. 水滴接触を起点とするリンクル・フォールド共存現象の制御機構解明

    Grant number:22H01360  2022.4 - 2025.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)  Grant-in-Aid for Scientific Research (B)

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    Authorship:Principal investigator  Grant type:Competitive

    Grant amount:\17810000 ( Direct Cost: \13700000 、 Indirect Cost:\4110000 )

  8. Coexistence of wrinkles and folds in film&#8211;substrate systems in contact with water droplets

    Grant number:23K22631  2022.4 - 2025.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

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    Authorship:Principal investigator 

    Grant amount:\17810000 ( Direct Cost: \13700000 、 Indirect Cost:\4110000 )

  9. 水の表面張力が駆動する薄膜リンクル構造の変形現象に関する研究

    Grant number:19K14843  2019.4 - 2022.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Early-Career Scientists  Grant-in-Aid for Early-Career Scientists

    Nagashima So

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    Authorship:Principal investigator  Grant type:Competitive

    Grant amount:\4290000 ( Direct Cost: \3300000 、 Indirect Cost:\990000 )

    Spontaneous formation of wrinkle patterns in compressed thin films has attarcted much attention. Recently, we have uncovered a phenomenon in which wrinkles transition into folds when a water droplet comes in contact with the wrinkles. However, the underlying mechanism remains to be elucidated. In this study, through in-situ microscope observations, we have revealed that the capillary forces of water help to increase the local compressive strains, which causes the water-induced wrinkle-to-fold transitions to occur. Furthermore, we have shown that the transitions can be induced only when the film is sufficiently thin and superhydrophilic. The characteristic dimensions of the resulting folds vary according to the film thickness. The water-induced wrinkle-to-fold transition offers a simple method for developing folds at designated locations on a wrinkled surface formed under small biaxial compression, which is difficult to achieve with conventional approaches.

  10. ナノ薄膜の座屈変形に起因する階層リンクル構造の自発的形成機構の解明

    Grant number:17H06835  2017.8 - 2019.3

    日本学術振興会  科学研究費助成事業  研究活動スタート支援

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    Authorship:Principal investigator  Grant type:Competitive

    Grant amount:\2600000 ( Direct Cost: \2000000 、 Indirect Cost:\600000 )

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Industrial property rights 3

  1. ナノワイヤおよびその製造方法、ナノリボンの製造方法

    永島 壮, 村田 瞭介, 奥村 大

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    Application no:特願2025-120565  Date applied:2025.7

  2. 膜の製造方法、膜、水収集膜、細胞足場材料、及び細胞足場材料の製造方法

    永島 壮, 鈴木 航, 奥村 大, 松原 成志朗, 松本 健郎, キム ジョンヒョン

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    Applicant:国立大学法人東海国立大学機構

    Application no:特願2024-158160  Date applied:2024

  3. 凹凸パターン構造体の製造方法

    永島 壮, 内山 航, 奥村 大, 松原 成志朗

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    Application no:特願2024-118000  Date applied:2024

 

Teaching Experience (On-campus) 9

  1. Design Practice 1

    2024

  2. [G30]Design Practice I

    2024

  3. Advanced Lectures on Solid Mechanics

    2024

  4. [G30]Advanced Lectures on Strength and Fracture of Materials

    2024

  5. Design Practice I

    2023

  6. Design Practice I

    2022

  7. Advanced Lectures on Strength and Fracture of Materials

    2022

  8. Advanced Lectures on Solid Mechanics

    2022

  9. Design Practice 1

    2021

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Teaching Experience (Off-campus) 5

  1. Seminar on Solid Mechanics

    2021.4 Nagoya University)

  2. Design Practice in Mechanical and Aerospace Engineering 1

    2021.4 Nagoya University)

  3. Exercises in Solid Mechanics

    2021.4 Nagoya University)

  4. 機械創成工学実習I

    2019.10 - 2021.3 大阪大学工学部)

  5. 基礎物理学実験

    2019.9 - 2021.3 Osaka University)

 

Social Contribution 1

  1. 機械・航空宇宙工学科の日常

    Role(s):Lecturer

    静岡市立高等学校  2023.10

Media Coverage 1

  1. 固体力学の研究動向と今後の展望に迫る Newspaper, magazine

    読売新聞 鹿児島県版  2023.6

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    Author:Other