• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Elucidation of nano-flexoelectricity and creation of buckling memory devices

Research Project

Project/Area Number 21H04534
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Review Section Medium-sized Section 18:Mechanics of materials, production engineering, design engineering, and related fields
Research InstitutionKyoto University

Principal Investigator

Sumigawa Takashi  京都大学, エネルギー科学研究科, 教授 (80403989)

Co-Investigator(Kenkyū-buntansha) 島 弘幸  山梨大学, 大学院総合研究部, 教授 (40312392)
梅野 宜崇  東京大学, 生産技術研究所, 教授 (40314231)
安部 正高  京都大学, エネルギー科学研究科, 准教授 (50582623)
服部 梓  大阪大学, 産業科学研究所, 准教授 (80464238)
Project Period (FY) 2021-04-05 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥43,030,000 (Direct Cost: ¥33,100,000、Indirect Cost: ¥9,930,000)
Fiscal Year 2023: ¥8,840,000 (Direct Cost: ¥6,800,000、Indirect Cost: ¥2,040,000)
Fiscal Year 2022: ¥11,830,000 (Direct Cost: ¥9,100,000、Indirect Cost: ¥2,730,000)
Fiscal Year 2021: ¥22,360,000 (Direct Cost: ¥17,200,000、Indirect Cost: ¥5,160,000)
Keywordsナノ / フレクソエレクトリシティ / 強誘電体 / 座屈 / メカニカルメモリ
Outline of Research at the Start

ひずみ勾配を有する強誘電材料に生じるフレクソエレクトリック効果に着目する。材料寸法がナノサイズになると,自由表面や超急峻化されたひずみ勾配によって,マクロとは異なる特異な振れくそエレクトリック効果を生じることが予測される.電子顕微鏡内その場観察負荷実験および力学解析を行ってその詳細およびメカニズムを明らかにすることに加え、その支配因子を特定して理論を構築する。さらに、ナノフレクソエレクトリック効果を応用したメカニカルメモリ素子を設計し、試作を行う。

Outline of Final Research Achievements

In this project, multiphysics phenomena induced by bending deformation of nano-sized ferroelectrics with well-ordered domains were investigated. Experiments were performed on specimens with a double cantilever beam geometry in a transmission electron microscope. When the test section between the beams was subjected to bending deformation, the domains disappeared with increasing deformation and reappeared after unloading. The direction of the domain walls after unloading was rotated by 90° relative to those before loading. This may be caused by the flexoelectric phenomenon due to the steep strain gradient in the nano-sized material. The mechanism was verified by additional experiments using specimens with different geometries. In addition, prototype buckling devices were fabricated to exploit this phenomenon.

Academic Significance and Societal Importance of the Research Achievements

ナノサイズの強誘電体材料中に生じるナノドメインについて、曲げ負荷を与えた際に消失することおよび除荷によって再度出現することをその場観察試験によって明らかにすることに成功した。除荷時に現れるナノドメインは、曲げの方向に起因した分極を有することを示し、この現象を利用することで、ドメインスイッチングを実現できることがわかった。本成果は、ナノサイズの強誘電体材料中のひずみ勾配を利用して力学的にドメインの分極方向を制御できることを示すものであり、材料力学分野における新しいマルチフィジックス現象の開拓に貢献するものである。機械的なメモリデバイス創製のための基礎を得たことは、社会的な意義としても価値がある。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Comments on the Screening Results   Annual Research Report
  • Research Products

    (57 results)

All 2024 2023 2022 2021 Other

All Int'l Joint Research (4 results) Journal Article (14 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 14 results,  Open Access: 6 results) Presentation (37 results) (of which Int'l Joint Research: 9 results,  Invited: 12 results) Book (1 results) Remarks (1 results)

  • [Int'l Joint Research] 鄭州大学(中国)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] ノルウェー科学技術大学(ノルウェー)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] 鄭州大学(中国)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] ノルウェー科学技術大学(ノルウェー)

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Characteristic fatigue damage near the Σ3(111) coherent twin boundary in micron-sized copper specimen2024

    • Author(s)
      Kim Byungwoon、Yasui Chihiro、Abe Masataka、Shima Hiroyuki、Umeno Yoshitaka、Sumigawa Takashi
    • Journal Title

      Materials Science and Engineering: A

      Volume: 899 Pages: 146470-146470

    • DOI

      10.1016/j.msea.2024.146470

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Surface outflow effect on dislocation structures in micrometer-sized metals2023

    • Author(s)
      Tobise Akihiro、Shima Hiroyuki、Akiba Yuri、Umeno Yoshitaka、Kawai Emi、Kubo Atsushi、Abe Masataka、Sumigawa Takashi
    • Journal Title

      Extreme Mechanics Letters

      Volume: 65 Pages: 102094-102094

    • DOI

      10.1016/j.eml.2023.102094

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Defect formation mechanisms in metal nanowire under cyclic loading: a molecular dynamics study2023

    • Author(s)
      Kubo Atsushi、Kawai Emi、Sumigawa Takashi、Shima Hiroyuki、Umeno Yoshitaka
    • Journal Title

      Modelling and Simulation in Materials Science and Engineering

      Volume: 31 Issue: 6 Pages: 065020-065020

    • DOI

      10.1088/1361-651x/acea3b

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Experimental investigation on magnetomechanical effect of carbon steel under high-cycle loading2023

    • Author(s)
      安部 正高, 澄川 貴志, 三戸 慎也, 宮澤 和紀
    • Journal Title

      Transactions of the JSME (in Japanese)

      Volume: 89 Issue: 923 Pages: 22-00319-22-00319

    • DOI

      10.1299/transjsme.22-00319

    • ISSN
      2187-9761
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Spot?Ladder Selection of Dislocation Patterns in Metal Fatigue2023

    • Author(s)
      Shima Hiroyuki、Umeno Yoshitaka、Sumigawa Takashi
    • Journal Title

      Symmetry

      Volume: 15 Issue: 5 Pages: 1028-1028

    • DOI

      10.3390/sym15051028

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Inductive Determination of Rate-Reaction Equation Parameters for Dislocation Structure Formation Using Artificial Neural Network2023

    • Author(s)
      Umeno Yoshitaka、Kawai Emi、Kubo Atsushi、Shima Hiroyuki、Sumigawa Takashi
    • Journal Title

      Materials

      Volume: 16 Issue: 5 Pages: 2108-2108

    • DOI

      10.3390/ma16052108

    • Related Report
      2023 Annual Research Report 2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Accessibility of ARPES for Three-dimensionally Architected Si{111}7×7 Facet Surfaces on Micro-patterned Si(110)2022

    • Author(s)
      Hattori Ken、Sakai Yuya、Pamasi Liliany N.、Irmikimov Aydar、Higashi Takaaki、Yang HaoBang、Shi XiaoQian、Guo FangZhun、Osaka Ai I.、Tanaka Hidekazu、Iimori Takushi、Komori Fumio、Hattori Azusa N.
    • Journal Title

      e-Journal of Surface Science and Nanotechnology

      Volume: 20 Issue: 4 Pages: 214-220

    • DOI

      10.1380/ejssnt.2022-038

    • ISSN
      1348-0391
    • Year and Date
      2022-07-28
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Realization of Non-degrading Huge Resistance Changes in the Metal Oxide Nanostructures Utilizing the Perfect Crystal Growth Techniques2022

    • Author(s)
      OSAKA Ai I.、HATTORI Azusa N.
    • Journal Title

      Vacuum and Surface Science

      Volume: 65 Issue: 7 Pages: 321-326

    • DOI

      10.1380/vss.65.321

    • ISSN
      2433-5835, 2433-5843
    • Year and Date
      2022-07-10
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Ultrasmall-Scale Brittle Fracture Initiated from a Dislocation in SrTiO<sub>3</sub>2022

    • Author(s)
      Sumigawa Takashi、Shimada Takahiro、Huang Kai、Mizuno Yuki、Hagiwara Yohei、Ozaki Naoki、Kitamura Takayuki
    • Journal Title

      Nano Letters

      Volume: 22 Issue: 5 Pages: 2077-2084

    • DOI

      10.1021/acs.nanolett.2c00005

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Nonsingular Stress Distribution of Edge Dislocations near Zero-Traction Boundary2022

    • Author(s)
      Shima Hiroyuki、Sumigawa Takashi、Umeno Yoshitaka
    • Journal Title

      Materials

      Volume: 15 Issue: 14 Pages: 4929-4929

    • DOI

      10.3390/ma15144929

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Analytic formulation of elastic field around edge dislocation adjacent to slanted free surface2022

    • Author(s)
      Shima Hiroyuki、Umeno Yoshitaka、Sumigawa Takashi
    • Journal Title

      Royal Society Open Science

      Volume: 9 Issue: 6 Pages: 220151-220151

    • DOI

      10.1098/rsos.220151

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Bending stress relaxation of microscale single-crystal copper at room temperature: An in situ SEM study2021

    • Author(s)
      Bending stress relaxation of microscale single-crystal copper at room temperature: An in situ SEM study
    • Journal Title

      European Journal of Mechanics / A Solids

      Volume: 90 Pages: 104377-104377

    • DOI

      10.1016/j.euromechsol.2021.104377

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Simultaneously Toughening and Stiffening Elastomers with Strong Eightfold Hydrogen Bonding2021

    • Author(s)
      Yizhi Zhuo, Zhijie Xia, Yuan Qi, Takashi Sumigawa, Jianyang Wu, Petr Sestak, Yinan Lu, Verner Hakonsen, Tong Li, Feng Wang, Wei Chen, Senbo Xiao, Rong Long, Takayuki Kitamura, Liangbin Li, Jianying He and Zhiliang Zhang
    • Journal Title

      Advanced Materials

      Volume: - Issue: 23 Pages: 2008523-2008523

    • DOI

      10.1002/adma.202008523

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Experimental evaluation of loading mode effect on plasticity of microscale single-crystal copper2021

    • Author(s)
      Kai Huang, Takashi Sumigawa, Takayuki Kitamura
    • Journal Title

      Materials Science and Engineering: A

      Volume: 806 Pages: 140822-140822

    • DOI

      10.1016/j.msea.2021.140822

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] ナノ~マイクロ材料に関するその場観察力学実験2024

    • Author(s)
      澄川貴志
    • Organizer
      電子情報通信学会 システムナノ技術に関する特別研究専門委員会主催 第5期 第3回研究会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 転位を起点とするナノ SrTiO3の破壊とその力学基準2023

    • Author(s)
      澄川貴志
    • Organizer
      日本セラミックス協会 第36回秋季シンポジウム
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Elucidation of formation mechanism of fatigue dislocation structures in micro-sized Ni single crystal under tensioncompression cyclic load2023

    • Author(s)
      Kota SUGISAKA
    • Organizer
      The Advanced Technology in Experimental Mechanics and International DIC Society Joint Conference 2023
    • Related Report
      2023 Annual Research Report
  • [Presentation] ナノ金属の引張圧縮疲労試験手法の開発2023

    • Author(s)
      池田大輝
    • Organizer
      日本材料学会第9回材料WEEK
    • Related Report
      2023 Annual Research Report
  • [Presentation] Σ3(111)境界を有するマイクロ銅双結晶試験片の引張圧縮疲労損傷2023

    • Author(s)
      Kim byungwoon
    • Organizer
      日本材料学会第9回材料WEEK
    • Related Report
      2023 Annual Research Report
  • [Presentation] 引張圧縮繰り返し負荷を受けるマイクロNi単結晶試験片の疲労転位組織形成過程の観察2023

    • Author(s)
      杉坂 浩太
    • Organizer
      日本材料学会第9回材料WEEK
    • Related Report
      2023 Annual Research Report
  • [Presentation] 非圧電性材料におけるナノ電界勾配に起因した Converse Flexoelectricity の形状効果2023

    • Author(s)
      池本 翔太郎
    • Organizer
      日本機械学会 M&M 2023 材料力学カンファレンス
    • Related Report
      2023 Annual Research Report
  • [Presentation] 異材界面を有するマイクロ金属単結晶の疲労2023

    • Author(s)
      Kim byungwoon
    • Organizer
      日本機械学会 M&M 2023 材料力学カンファレンス
    • Related Report
      2023 Annual Research Report
  • [Presentation] 力学系理論による疲労転位構造の安定性解析2023

    • Author(s)
      島 弘幸
    • Organizer
      日本機械学会 M&M 2023 材料力学カンファレンス
    • Related Report
      2023 Annual Research Report
  • [Presentation] 引張圧縮負荷を受けるマイクロ Ni 単結晶中の疲労転位構造形成過程の観察2023

    • Author(s)
      杉坂 浩太
    • Organizer
      日本機械学会 M&M 2023 材料力学カンファレンス
    • Related Report
      2023 Annual Research Report
  • [Presentation] 集中荷重に対するひずみ分散機能を有するメカニカルメタマテリアルの開発2023

    • Author(s)
      向井 健将
    • Organizer
      日本機械学会 M&M 2023 材料力学カンファレンス
    • Related Report
      2023 Annual Research Report
  • [Presentation] Observation of fatigue dislocation structure in micro-sized Ni single crystal specimen2023

    • Author(s)
      Takashi Sumigawa
    • Organizer
      2023 International Joint Symposium on Convergence Technology of Mechanical Engineering
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] In Situ Observation of Fracture Dominated by a Single Dislocation and its Governing Mechanics2022

    • Author(s)
      Takashi Sumigawa
    • Organizer
      MS&T22 Technical meeting and Exhibition
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Experimental Investigation of the Fatigue Behavior of Three-dimensionally Small Micro-sized Metals2022

    • Author(s)
      Takashi Sumigawa
    • Organizer
      MATERIALS STRUCTURE & MICROMECHANICS OF FRACTURE (MSMF10)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Prominent metal-insulator transition properties in the three-dimensional nanostructured strongly correlated oxides2022

    • Author(s)
      Azusa N. Hattori
    • Organizer
      Bangladesh Crystallographic Association 7th Conference of BCA
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Modulation of metal-insulator transition properties in the three-dimensionally controlled nano-micro space2022

    • Author(s)
      Azusa N. Hattori
    • Organizer
      International Conference on Physics
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 疲労した金属の転位組織形成メカニズム解明への数理的アプローチ2022

    • Author(s)
      飛世 昂大
    • Organizer
      日本材料学会第7回マルチスケール材料力学シンポジウム
    • Related Report
      2022 Annual Research Report
  • [Presentation] 曲げ負荷を受けるBaTiO3ナノ単結晶のドメイン構造変化の観察2022

    • Author(s)
      高木敏行
    • Organizer
      日本材料学会第8回材料WEEK
    • Related Report
      2022 Annual Research Report
  • [Presentation] 単一すべり方位を有するナノNi単結晶のTEM内引張圧縮負荷挙動観察2022

    • Author(s)
      石坂大和
    • Organizer
      日本材料学会第8回材料WEEK
    • Related Report
      2022 Annual Research Report
  • [Presentation] 引張圧縮負荷を受けるマイクロNi単結晶の疲労転位組織形成過程観察2022

    • Author(s)
      穴田悠樹
    • Organizer
      日本材料学会第8回材料WEEK
    • Related Report
      2022 Annual Research Report
  • [Presentation] VO2単結晶ナノ薄膜のモット転移に関する面内単軸ひずみ感受性評価2022

    • Author(s)
      角田 純平
    • Organizer
      日本機械学会 M&M 2022 材料力学カンファレンス
    • Related Report
      2022 Annual Research Report
  • [Presentation] マイクロ金属の疲労転位組織形成パターンに関する数値シミュレーション2022

    • Author(s)
      飛世 昂大
    • Organizer
      日本機械学会 M&M 2022 材料力学カンファレンス
    • Related Report
      2022 Annual Research Report
  • [Presentation] ナノ構造化による強相関Ni酸化物への水素ドープ抵抗変調特性制御2022

    • Author(s)
      服部 梓
    • Organizer
      材料学会第8回材料WEEK
    • Related Report
      2022 Annual Research Report
  • [Presentation] Emergent Ferromagnetic properties for the Fe nanofilms on the architected three-dimensional patterned surfaces2022

    • Author(s)
      Azusa N. Hattori
    • Organizer
      International Conference on Precision Engineering
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Characteristic Fatigue of Micro-Sized Single Crystal Nickel2022

    • Author(s)
      Takashi Sumigawa
    • Organizer
      The 6th International Conference on Materials and Reliability
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 3次元立体表面上の鉄ナノ薄膜での特異な磁気特性2022

    • Author(s)
      服部 梓、L. N. Pamasi、阪井 雄也、楊 浩邦、細糸 信好、A. Irmikimov、東 嵩晃、大坂 藍、田中 秀和、服部 賢
    • Organizer
      第69回応用物理学会春季学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Fatigue of Micro-sized Single Crystal Copper under Tension-compression Cyclic Loading2021

    • Author(s)
      Takashi Sumigawa
    • Organizer
      Materials Research Meeting 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 微小スケール金属の疲労実験と組織観察2021

    • Author(s)
      澄川貴志
    • Organizer
      日本金属学会研究会No.82 "微小領域の力学特性評価とマルチスケールモデリング" 2021
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Fatigue of Micro-sized metals2021

    • Author(s)
      Takashi Sumigawa
    • Organizer
      5th International Conference on Structural Integrity and Durability (ICSID 2021)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] マイクロスケールの金属の疲労2021

    • Author(s)
      澄川貴志
    • Organizer
      第10回RC287「 新時代の電子デバイスと電子機器における信頼性設計評価と熱設計に関する研究分科会 」
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 立体表面造形技術を駆使した3次元ナノ超構造・物性の先導的研究2021

    • Author(s)
      服部 梓
    • Organizer
      2021年 日本表面真空学会学術講演会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 面外方向にV-V dimer構造を有するVO2単結晶ナノ薄膜のモット転移に及ぼす面内単軸ひずみの影響2021

    • Author(s)
      角田純平
    • Organizer
      日本材料学会第7回材料WEEK
    • Related Report
      2021 Annual Research Report
  • [Presentation] マイクロ銅単結晶の疲労に及ぼす異材界面の影響2021

    • Author(s)
      小川博己
    • Organizer
      日本材料学会第7回材料WEEK
    • Related Report
      2021 Annual Research Report
  • [Presentation] [001]多重すべり方位を有するマイクロ銅単結晶の引張圧縮疲労損傷過程のその場観察2021

    • Author(s)
      高田 聡志
    • Organizer
      日本機械学会 M&M2021材料力学カンファレンス
    • Related Report
      2021 Annual Research Report
  • [Presentation] 設計可能な引張剛性を有するメタマテリアルの開発2021

    • Author(s)
      大村知輝
    • Organizer
      日本機械学会 M&M2021材料力学カンファレンス
    • Related Report
      2021 Annual Research Report
  • [Presentation] TiO2(001)基板上VO2単結晶ナノ薄膜のモット転移に及ぼす面内単軸ひずみの影響2021

    • Author(s)
      角田純平
    • Organizer
      日本材料学会第6回マルチスケール材料力学シンポジウム
    • Related Report
      2021 Annual Research Report
  • [Presentation] マイクロNi単結晶の引張圧縮疲労とその内部転位組織2021

    • Author(s)
      飛世昂大
    • Organizer
      日本材料学会第6回マルチスケール材料力学シンポジウム
    • Related Report
      2021 Annual Research Report
  • [Book] 金属疲労の基礎とメカニクス―結晶学と力学から読み解く金属の疲労2024

    • Author(s)
      兼子 佳久,田中 啓介,高橋 可昌,澄川 貴志,平方 寛之,梅野 宜崇
    • Total Pages
      248
    • Publisher
      内田老鶴圃
    • Related Report
      2023 Annual Research Report
  • [Remarks] 京都大学大学院 エネルギー科学研究科 エネルギー材料設計研究室ホームページ

    • URL

      https://www.force.energy.kyoto-u.ac.jp/

    • Related Report
      2023 Annual Research Report 2022 Annual Research Report 2021 Annual Research Report

URL: 

Published: 2021-04-28   Modified: 2025-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi