Hashimoto, Masaaki

写真a

Affiliation

Faculty of Science and Technology, Department of System Design Engineering ( Yagami )

Position

Assistant Professor/Senior Assistant Professor
Scopus Paper Info  
Paper Count: 18 Citation Count: 69 h-index: 3

Click to view the Scopus page. The data was downloaded from Scopus API in August 23, 2026, via http://api.elsevier.com and http://www.scopus.com .

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Career 【 Display / hide 】

  • 2018.04
    -
    2021.03

    Keio University, Graduate School of Science and Technology, 日本学術振興会特別研究員 (DC1)

  • 2020.10
    -
    2022.03

    慶應義塾大学, 理工学部, 訪問研究員

  • 2021.04
    -
    2022.03

    名古屋大学大学院, 工学研究科, 日本学術振興会特別研究員 (PD)

  • 2021.10
    -
    2025.03

    日本科学技術振興機構, JST戦略的創造研究推進事業 ACT-X, 代表研究員

  • 2022.04
    -
    2025.03

    Keio University, faculty of science and technology, Assistant Professor

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Academic Background 【 Display / hide 】

  • 2012.04
    -
    2016.03

    Keio University, Faculty of Science and Technology, システムデザイン工学科

    University, Graduated

  • 2016.04
    -
    2018.03

    Keio University, Graduate School of Science and Technology, 総合デザイン工学専攻修士課程

    Graduate School, Completed, Master's course

  • 2018.04
    -
    2020.09

    Keio University, Graduate School of Science and Technology, 総合デザイン工学専攻 後期博士課程早期修了

    Graduate School, Completed, Doctoral course

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Academic Degrees 【 Display / hide 】

  • Doctor (Engineering), Keio University, Coursework, 2020.09

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Research Areas 【 Display / hide 】

  • Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Thermal engineering

  • Nanotechnology/Materials / Nano/micro-systems

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Research Keywords 【 Display / hide 】

  • ナノマイクロマシン、熱駆動アクチュエータ、熱膨張、MEMS

  • 熱機械システムデザイン

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Research Themes 【 Display / hide 】

  • 巨大正・負熱膨張ソフトメタマテリアルの開発とマイクロアクチュエータへの応用, 

    2025.04
    -
    Present

  • 低消費電力な超長ストローク熱駆動MEMSアクチュエーターの開発, 

    2023.04
    -
    Present

  • 付加・除去光造形微細加工で拓く多自由度熱駆動4Dソフトマイクロアクチュエータ, 

    2023.04
    -
    Present

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Proposed Theme of Joint Research 【 Display / hide 】

  • 低消費電力・長ストローク熱駆動MEMSアクチュエータの社会実装

    Interested in joint research with industry (including private organizations, etc.),  Desired form： Technical Consultation, Funded Research, Cooperative Research, Other

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Papers 【 Display / hide 】

  • 切り紙型熱駆動MEMSアクチュエータの5自由度運動評価

    松岳勇樹，田口良広，橋本将明

    電気学会論文誌Ｅ（センサ・マイクロマシン部門誌） 146 ( 9 )  2026.09

    Research paper (scientific journal), Last author, Corresponding author, Accepted

  • Thermally Stable, Low-Temperature Si–Si Bonding with Suppressed Void Formation for μLHP-Integrated 3D ICs

    Dianping Jiang, Masaaki Hashimoto, Madoka Kurosaki, Ai Ueno, Marie Sano, Fumihiro Inoue, Hosei Nagano, Munehiro Tada

    Japanese Journal of Applied Physics  2026.08

    Research paper (scientific journal), Joint Work, Accepted

  • Moisture-Harvesting Silicone Rubber Composite with Repeatable Large Actuation via Liquid-Gas Phase Transition

    Tanaka K., Taguchi Y., Hashimoto M.

    Proceedings of the IEEE International Conference on Micro Electro Mechanical Systems MEMS    964 - 966 2026

    ISSN  10846999

    　View Summary

    This paper reports on a moisture-harvesting silicone rubber composite capable of repeatable large actuation by liquid-gas phase transition, as a promising material for soft thermal actuators. The composite, fabricated by dispersing silica gel particles within a silicone rubber matrix, absorbed ambient moisture, resulting in a mass increase of approximately 1.6% after 2 h in a humidified environment. The composite exhibited repeatable displacements (δ/L=0.18, displacement-to-length ratio). These results demonstrate its ability to harvest environmental moisture as a fuel for actuation and to repeat large actuations, highlighting its potential for aquatic soft actuator applications.

  • Thermal performance evaluation of a parylene-coated polydimethylsiloxane loop heat pipe featuring a micropillar evaporator

    Ryobu Nomura, Masaaki Hashimoto, Abdulkareem Alasli, Hosei Nagano, Ai Ueno

    Applied Thermal Engineering 272   126249 2025.08

    Research paper (scientific journal), Accepted,  ISSN  13594311

    　View Summary

    The thermal management of flexible electronic devices represents a major barrier to their applications. Thus, in this study, a parylene-coated polydimethylsiloxane (PDMS)-based loop heat pipe (LHP), parylene/PDMS-LHP, equipped with a micropillar evaporator was developed. A newly developed one-dimensional steady-state numerical model was used and the parylene/PDMS-LHP (thickness: 1.5 mm) was designed based on the model. Flow channel of PDMS was formed by a mold using conventional photolithography technique. Parylene is vapor-deposited on the inner surface of the flow channel to improve the liquid barrier properties and hydrophilicity. Ethanol was selected as the working fluid from the viewpoint of the contact angle with parylene surface. Heat input tests were conducted in six different orientations (five without bending and in different orientations, and one with bending) to verify the effect of operating direction on performance, assuming that the Parylene/PDMS-LHP will be mounted on flexible electronic devices. The maximum heat-transport of the parylene/PDMS-LHP was 3.0 W, and the heat source temperature decreased to ∼ 60°C compared with that of a non-fluid-charged device in a horizontal orientation. In tests in five orientations without bending and one orientation with bending, continuous heat transfer from 1.0 W to 2.5 W or 3.0 W was achieved in all orientations, confirming the applicability of the proposed Parylene/PDMS-LHP to wearable devices.

  • Quadrant kirigami-type electrothermal MEMS actuator with multi-degree-of-freedom morphing capability

    Tomoya Tsutsui, Yoshihiro Taguchi, Masaaki Hashimoto

    Journal of Micromechanics and Microengineering 35 ( 2 ) 025004 2025.01

    Research paper (scientific journal), Joint Work, Last author, Corresponding author, Accepted,  ISSN  0960-1317

    　View Summary

    Abstract

    Kirigami design principles have been widely applied to develop thermally responsive shape-morphing devices across various scales. However, the multi-degree-of-freedom (multi-DoF) morphing capabilities of microelectromechanical-systems (MEMS)-scale kirigami devices under localized Joule heating remain largely unexplored. This paper presents a quadrant kirigami-type electrothermal MEMS actuator with multi-DoF morphing capabilities, demonstrating both one-dimensional piston motion and two-dimensional (2D) tilting motion. The actuator, fabricated using surface and bulk micromachining techniques, features four independent electrical circuits, creating four electrothermally separated quadrants within the MEMS-scale kirigami structure. The temperature distribution within each quadrant of the actuator, subjected to localized Joule heating, was experimentally examined using thermography, revealing distinct temperature contrasts. The actuator demonstrated multi-DoF morphing capabilities, achieving a 2D tilting angular displacement of approximately 10° at 70 mW and a vertical piston displacement of 1.5 mm at 135 mW. These experimental results validate that the electrothermal quadrant design, leveraging localized Joule heating, enhances the DoF morphing capabilities of kirigami-type electrothermal MEMS actuators.

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Papers, etc., Registered in KOARA 【 Display / hide 】

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Reviews, Commentaries, etc. 【 Display / hide 】

  • 日本機械学会機械工学年鑑2025マイクロ・ナノ熱工学

    橋本将明

    機械工学年鑑 (日本機械学会 )   2025.07

    Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media), Lead author

  • 日本熱物性学会賞奨励賞を受賞して

    橋本将明

    熱物性 Vol. 37 ( No. 1 )  2024.02

    Single Work, Lead author

  • 熱駆動MEMSアクチュエータの作り方

    橋本将明

    日本機械学会熱工学部門ニュースレター (日本機械学会熱工学部門)   ( 2023年9月号, TED Plaza )  2023.09

    Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media), Single Work, Lead author

  • Study on Micropillar-driven MEMS Flexible Heat Transport Device

    野村稜武, 上野藍, 橋本将明, ALASLI Abdulkareem, 長野方星

    日本伝熱シンポジウム講演論文集(CD-ROM) 60th 2023

    ISSN  1346-1532

  • めるてぃんぐぽいんと（24） 美学と熱工学―熱駆動マイクロアクチュエータのデザイン―

    橋本将明

    熱物性 36 ( 2 ) 83 - 84 2022.05

    Article, review, commentary, editorial, etc. (scientific journal), Single Work, Lead author, Last author, Corresponding author

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Presentations 【 Display / hide 】

  • Fabrication of Thermal Microactuators via Post-3D-Printing Femtosecond Laser Modification

    Kenichiro Abe, Yoshihiro Taguchi, Masaaki Hashimoto

    [International presentation]  2026 International Conference on Optical MEMS and Nanophotonics (OMN2026) (Quebec, Canada) , 

    2026.08

  • Thermally Tunable Micro Structure Based on CTE-Engineered Composite Resins

    Tengyu Li, Kenichiro Abe, Masaaki Hashimoto, Yoshihiro Taguchi

    [International presentation]  2026 International Conference on Optical MEMS and Nanophotonics (OMN2026) (Quebec, Canada) , 

    2026.08

  • フェムト秒レーザ熱蓄積による表層炭化を用いた熱駆動マイクロアクチュエータの開発

    寺田隼, 田中靖子, 田口良広, 橋本将明

    第63回日本伝熱シンポジウム (北海道札幌市) , 

    2026.05

  • 熱機械メタマテリアルを用いた熱駆動マイクロアクチュエータの特性設計

    細合優友, 橋本将明

    第63回日本伝熱シンポジウム (北海道札幌市) , 

    2026.05

  • Design and Evaluation of Thin Silicon Loop Heat Pipe Fabricated by MEMS

    Madoka Kurosaki, Masaaki Hashimoto, Ryobu Nomura, Dianping Jiang, Munehiro Tada, Noriyuki Watanabe, Hosei Nagano, Ai Ueno

    [International presentation]  23rd International Heat Pipe Conference & 17th International Heat Pipe Symposium (IHPC/IHPS 2026) (Gdansk, Poland) , 

    2026.05

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Research Projects of Competitive Funds, etc. 【 Display / hide 】

  • 量子機能とエネルギー変換を統合するエネルギー横断ナノプラットフォームの創出

    2026
    -
    2029

    慶應義塾大学, 石井・石橋基金 若手研究者育成創発・先導戦略プロジェクト推進特別事業, Coinvestigator(s)

  • 宇宙用フラット熱ケーブルによる局所排熱技術の創出

    2026
    -
    2029

    宇宙航空研究開発機構（JAXA）, 宇宙戦略基金（SX-ARK）ＳＸ中核領域発展研究, Coinvestigator(s)

    　View Remarks

    体系的番号（JAXA SSF Program Japan Grant Number）: JPJXSSF25MX18022

  • Development of super resolved multi-material 3D printing based on thermophysical palette

    2025.04
    -
    2028.03

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

    　View Summary

    本研究の目的は、熱物性工学に基づき、異種材料によって構成されるピコリットルオーダの極微量液滴内において、フェムト秒レーザを用いた二光子吸収重合により超高精細マルチマテリアル3D光造形を達成し、例えば断熱壁と高熱輸送層が狭い空間に複雑に入り組むような全く新しいコンセプトに立脚したマイクロ熱制御デバイスを世界に先駆け実現することである。本研究により、これまで不可能であった傾斜機能材料などの複雑なマイクロ3D光造形が可能となり、革新的マイクロ熱制御デバイスの実現による新産業創出を加速する。

  • Development of Soft Metamaterials with Large Positive and Negative Thermal Expansion and Their Applications to Microactuators

    2025.04
    -
    2027.03

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

    　View Summary


    自然材料を凌駕する巨大な正負の熱膨張率を持つソフトメタマテリアルをマイクロサイズで作製できれば、それらを構成材料とすることでソフト熱駆動マイクロアクチュエータの設計自由度は飛躍的に向上する。そこで本研究では、マイクロ光造形とフェムト秒レーザ改質を用いた熱膨張メタマテリアル作製手法を提案し、巨大な正負の熱膨張率を有するマイクロサイズ熱膨張ソフトメタマテリアルの開発と、熱駆動マイクロアクチュエータへの応用実証を目的とする。

  • 集積化マイクロ光造形を用いた多自由度熱駆動MEMSロボットアームの開発

    2025.04
    -
    2026.03

    慶應義塾大学, 学事振興資金（個人研究）特B, Principal investigator

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Intellectual Property Rights, etc. 【 Display / hide 】

  • 半導体装置、装置、および半導体装置の製造方法

    Date applied： 特願2025-47594  2025.03 

    Patent

  • 流量測定装置、流量測定方法および流量測定プログラム

    Date applied： 特願2017-242118  2017.12 

    Date announced： 特開2018-100968   

    Patent

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Awards 【 Display / hide 】

  • 新分野開拓表彰

    2023.11, 一般社団法人日本機械学会マイクロ・ナノ工学部門

    Type of Award： Award from Japanese society, conference, symposium, etc.

  • 日本熱物性学会奨励賞

    2023.10, 日本熱物性学会

    Type of Award： Award from Japanese society, conference, symposium, etc.

  • 若手優秀講演表彰

    2022.02, 一般社団法人日本機械学会マイクロ・ナノ工学部門

    Type of Award： Award from Japanese society, conference, symposium, etc.

  • 日本熱物性学会論文賞

    橋本将明,田口良広, 2021.10, 日本熱物性学会, ミリ長ストローク・低電力熱駆動切り紙MEMSアクチュエータの開発ー薄膜バイモルフの熱・機械応答特性ー

    Type of Award： Honored in official journal of a scientific society, scientific journal

  • 日本伝熱学会奨励賞

    2021.05, 社団法人日本伝熱学会, 光バイオプシーのためのミリ長ストローク切り紙型熱駆動MEMSスキャナーの開発

    Type of Award： Award from Japanese society, conference, symposium, etc.

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Courses Taught 【 Display / hide 】

  • SPECIAL LECTURE IN SYSTEM DESIGN ENGINEERING

    2026

  • SYSTEM DESIGN ENGINEERING PRACTICAL RESEARCH (DOMESTIC) B

    2026

  • THERMOFLUID DYNAMICS 1

    2026

  • EXERCISE ON SYSTEM DESIGN ENGINEERING

    2026

  • SYSTEM DESIGN ENGINEERING PRACTICAL RESEARCH (DOMESTIC) A

    2026

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Social Activities 【 Display / hide 】

  • 新川崎・創造のもりのNANOBICオープンラボナノ・マイクロ技術講習・実習会

    2024.12

  • 新川崎・創造のもりのNANOBICオープンラボ ナノ・マイクロ技術講習・実習会

    2023.12
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Memberships in Academic Societies 【 Display / hide 】

  • IEEE, 

    2025.11
    -
    Present

  • 電気学会, 

    2023.03
    -
    Present

  • 日本機械学会, 

    2020.11
    -
    Present

  • 日本熱物性学会, 

    2020.04
    -
    Present

  • 日本伝熱学会, 

    2019.04
    -
    Present

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Committee Experiences 【 Display / hide 】

  • 2026.06
    -
    2026.11

    オーガナイズドセッション オーガナイザー（OS-12 マイクロ・ナノ熱デバイスと熱計測）, 日本機械学会 熱工学コンファレンス2026

  • 2026.03
    -
    2026.12

    実行委員（4学会合同若手企画・分野連携担当）, 2026マイクロ・ナノ工学シンポジウム実行委員会（日本機械学会マイクロ・ナノ工学部門）

  • 2026.03
    -
    2026.12

    実行委員（フォトコンテスト担当）, 第43回センサ・マイクロマシンと応用システムシンポジウム実行委員会

  • 2026.03
    -
    2026.08

    Technical program committee member, International Conference on Optical MEMS and Nanophotonics 2026 (OMN2026)

  • 2025.01
    -
    2025.12

    若手企画副担当, 第42回センサ・マイクロマシンと応用システムシンポジウム実行委員会

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