Hirakata Hiroyuki

ヒラカタヒロユキ | Hirakata Hiroyuki

Affiliation and department：
Homepage URL (1)： http://msr.me.kyoto-u.ac.jp/

Research field (1)： Machine materials and mechanics

Research theme for competitive and other funds (23)：

2024 - 2029 複雑破壊現象を支配する量子超越性の材料力学
2020 - 2025 Nanomechanics on rewritable material strength by anomalous electrons
2021 - 2023 イモータル材料力学の創成
2020 - 2023 Rewriting mechanism of material strength by anomalous electrons
2017 - 2020 Mechanics of chemical reaction induced by stress field in multilayered nano-films

2017 - 2020 Mechanics of creep fracture in metallic nanostructures

2014 - 2019 Essence of Size Effects on Strength of Metallic Nano-Films

2016 - 2018 Development of local strain measurement technique using transmission HR-EBSD

2014 - 2017 Study on creep properties of nano-materials by using specimens with controlled shape, or stress concentration, and in situ observation

2013 - 2017 Fracture mechanics in single digit nanometer scale

2014 - 2016 Creation of three-dimensional mechanical elements by controlling anisotropic nanostructures of thin films

2014 - 2015 金属超ナノ薄膜の変形と破壊

2013 - 2015 Evaluation of large-strain plasticity of nano-films by a hybrid digital image correlation method

2011 - 2014 Investigation on Fracture Mechanisms and Size Effects of Nano-Films Using Nano-Mechanical Testing System based upon in-situ Observations and Analyses

2011 - 2014 Time-dependent deformation and fracture at interfaces of nanostructures

2011 - 2012 Creation of Flexible Nano-Materials

2011 - 2012 Fabrication and Mechanical Properties of Nanocomposites by Multiscale Self-Assembly

2008 - 2010 Investigation into the degradation mechanism of environmental embrittlement using integrated in-situ nano mechanical testing

2008 - 2010 Realization of thin films consisting of structured nanoelements by a self-organization method and evaluation of their mechanical properties

2004 - 2008 Interface Strength of Low-Dimensional Small Components

2006 - 2007 ナノスプリングの変形特性評価法の開発

2004 - 2005 微小構造体の高温界面剥離強度の破壊力学評価

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Papers (116)：

Kohta Kasai, Takashi Nojima, Yu Wang, Tao Xu, Hiroyuki Hirakata, Takahiro Shimada. Mechanical Writing of Polar Skyrmionic Topological States via Extrinsic Dzyaloshinskii-Moriya-like Flexoelectricity in Ferroelectric Thin Films. ACS Nano. 2024
Hiroki Noda, Shumpei Sakaguchi, Susumu Minami, Hiroyuki Hirakata, Takahiro Shimada. Ab initio study of electron-doping effect on shear strength of covalent Si: Insight into electronic brittle-ductile transition. International Journal of Mechanical Sciences. 2024. 278. 109454-109454
Kohta Kasai, Takayuki Hamaguchi, Yu Wang, Susumu Minami, Hiroyuki Hirakata, Takahiro Shimada. Singular stress field induced two-dimensional topological polar structures in SrTiO3: Topological number manipulation via loading modes. Computational Materials Science. 2024. 242. 113070-113070
Tao Xu, Chengsheng Wu, Sizheng Zheng, Yu Wang, Jie Wang, Hiroyuki Hirakata, Takayuki Kitamura, Takahiro Shimada. Mechanical Rippling for Diverse Ferroelectric Topologies in Otherwise Nonferroelectric SrTiO3 Nanofilms. Physical Review Letters. 2024. 132. 8
Tao Xu, Masataka Mori, Hiroyuki Hirakata, Takayuki Kitamura, Takahiro Shimada. Emergent ultrasmall multiferroics in paraelectric perovskite oxide by hole polarons. Physical Chemistry Chemical Physics. 2024. 26. 2. 842-847

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MISC (125)：

Takahiro SHIMADA, Le Van LICH, Takayuki KITAMURA, Hiroyuki HIRAKATA. Nontrivial topological polarization field self-ordered in nanoporous ferroelectrics-A phase-field modeling. 2019 MRS Fall Meeting and Exhibits. 2019. EL03.06.18
Hiroyuki HIRAKATA, Takayuki NAGASHIMA, Kotaro YAMAGUCHI, Takahiro SHIMADA. Size effects on creep and creep fracture mechanisms of single-crystal metallic nanomaterials. 2019 MRS Fall Meeting and Exhibits. 2019. MS01.09.24
近藤俊之, 三木大輝, 平方寛之, 箕島弘二. 表面酸化層制御サブミクロン銅薄膜の破壊じん性. 破壊力学シンポジウム講演論文集. 2019. 19th
Takahiro SHIMADA, Tao XU, Takayuki KITAMURA, Hiroyuki HIRAKATA. Multiferroic polarons in doped perovskite oxides. 2018 MRS Fall Meeting and Exhibits. 2018. EP01.03.17
Hiroyuki HIRAKATA, Takashi KAWAI, Toshiyuki KONDO, Kohji MINOSHIMA. Stress-induced chemical reaction of Ti/Si multilayered nano-films. 2018 MRS Fall Meeting and Exhibits. 2018. NM02.03.22

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Books (2)：

Fracture Nanomechanics, Second Edition
Pan Stanford 2016
Fracture Nanomechanics
Pan Stanford 2011

Professional career (1)：

博士(工学) (京都大学)

Work history (5)：

2017/04 - Kyoto University Department of Mechanical Engineering and Science Professor
2008/02 - 2017/03 Osaka University Department of Mechanical Engineering Associate Professor
2007/04 - 2008/01 Osaka University Department of Mechanical Engineering Associate Professor
2005/04 - 2007/03 Kyoto University Assistant Professor
2003/04 - 2005/03 Kyoto University Assistant Professor

Awards (6)：

2015/10 - Ohji-Ohtsuka-Okamura Award for Promising Researchers
2015/05 - 大阪大学総長奨励賞2015
2010/05 - 日本材料学会学術奨励賞「ナノ構造体およびその界面の変形と破壊の力学に関する研究」
2007/05 - 日本材料学会論文賞「透過型電子顕微鏡によるナノ構造体の界面端き裂発生のその場観察試験法の開発」
2005/05 - 日本材料学会第54期優秀講演発表賞

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