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Fatigue Lifetime of Micro Mirror on High Torsional Stress and Elucidation of Accelerated Fatigue Phenomena

Research Project

Project/Area Number 18K03836
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 18010:Mechanics of materials and materials-related
Research InstitutionNagoya Institute of Technology

Principal Investigator

Izumi Hayato  名古屋工業大学, 工学(系)研究科(研究院), 助教 (90578337)

Project Period (FY) 2018-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywordsシリコン / 有限要素法解析 / マイクロミラー / 材料試験 / 圧電素子 / 透過型電子顕微鏡 / ねじり試験 / マイクロプロセス / PZT / 疲労 / 疲労破壊 / MEMSミラー / 透過電子顕微鏡 / ねじり応力 / MEMS / 圧電 / アクチュエータ / 環境効果
Outline of Final Research Achievements

To identify the fatigue behavior of silicon, micro testing device capable of fatigue testing and integration on transmission electro microscopy holder was designed. The stress, resonance frequency, buckling for micro testing device were calculated using FEM software, and it has become possible to design the size with 3.8mm×4.0mm, resonance frequency with 11kz, shear stress with 2GPa. Fabrication process for micro testing device was considered, and pzt thin film was deposited on SOI wafer for piezoelectric drive. Micro torsion testing machine also was designed for measuring the static strength for fatigue test. Relationship between detect accumulation on silicon and shear stress was suggested.

Academic Significance and Societal Importance of the Research Achievements

シリコンの疲労破壊が発見されて以来、四半世紀が経つにも関わらず、実験の困難さもあり、疲労破壊の本質に関する決定的な証拠は未だ得られていない。シリコンの疲労破壊の挙動を明らかにするための方法論として、本研究では透過型電子顕微鏡を用いた直接観察を提案し、透過型電子顕微鏡の極めて限られた観察スペース内において、疲労過程その場観察を実現するための材料試験デバイスが設計・製作できることを示した。また予備実験によりシリコンの欠陥集積とせん断応力との関係が示唆されたことから、今後、本デバイスを用いてねじりによるせん断応力とシリコンの疲労過程の詳細観察および疲労破壊メカニズムの解明が期待される。

Report

(6 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (9 results)

All 2022 2020 2019 2018

All Journal Article (2 results) (of which Peer Reviewed: 2 results) Presentation (7 results) (of which Int'l Joint Research: 3 results,  Invited: 1 results)

  • [Journal Article] The origin of fatigue fracture in single-crystal silicon2022

    • Author(s)
      H.Izumi, T. Kita, S. Arai, K. Sasaki, S. Kamiya
    • Journal Title

      Journal of Material Science

      Volume: 57 Issue: 18 Pages: 8557-8566

    • DOI

      10.1007/s10853-022-07055-5

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] A multidimensional scheme of characterization for performance deterioration behavior of flexible devices under bending deformation2020

    • Author(s)
      S.Kamiya, H. Izumi, T. Sekine, N. Shishido, H. Sugiyama, Y. Haga, T. Minari, M. Koganemaru, S. Tokito
    • Journal Title

      Thin Solid Films

      Volume: 694 Pages: 137613-137613

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] A novel method of systematic quantitative characterization for mechanical robustness of flexible thin film devices against repeated bending deformation2022

    • Author(s)
      H. Izumi, M. Nomura, Y. Haga, H. Sugiyama, S. Kamiya
    • Organizer
      18th International Conference on Plasma Surface Engineering
    • Related Report
      2022 Annual Research Report
  • [Presentation] A novel scheme of characterization for performance deterioration behavior of flexible devices under bending deformation2019

    • Author(s)
      S. Kamiya, H. Izumi, T. Sekine, N. Shishido, H. Sugiyama, Y. Haga, T. Minari, M. Koganemaru, S. Tokito
    • Organizer
      46th International Conference on Metallurgical Coating and Thin Films
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 繰返し圧縮負荷によるシリコン単結晶中の結晶欠陥集積とき裂進展の電子顕微鏡観察2019

    • Author(s)
      杉山裕子,泉隼人,神谷庄司
    • Organizer
      日本機械学会2019年度年次大会
    • Related Report
      2019 Research-status Report
  • [Presentation] 極薄シリコンチップの曲げ強度測定2019

    • Author(s)
      灰本隆志,松崎栄,川合章仁,泉隼人,神谷庄司
    • Organizer
      日本機械学会2019年度年次大会
    • Related Report
      2019 Research-status Report
  • [Presentation] Plastic Deformation Enhanced Silicon Surface by Synergistic Effect between Defect and Hydrogen2018

    • Author(s)
      H. Izumi M. Nakamura S. Kamiya
    • Organizer
      The 9th Asia-Pacific Conference of Transducers and Micro-Nano technology (APCOT2018)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Increasing the ductility of single crystalline silicon treated by hydrogen plasma2018

    • Author(s)
      H. Izumi M. Nakamura S. Kamiya
    • Organizer
      16th International Conference on Plasma Surface Engineering (PSE2018)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] マイクロシステムの機械的信頼性評価2018

    • Author(s)
      泉隼人
    • Organizer
      有機機能材料のリソグラフィ加工コンソーシアム
    • Related Report
      2018 Research-status Report
    • Invited

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Published: 2018-04-23   Modified: 2024-01-30  

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