Seki Takehito

セキタケヒト | Seki Takehito

Affiliation and department：
Other affiliations (1)：

Japan Science and Technology Agency PRESTO

Research field (3)： Inorganic materials , Metallic materials , Nanomaterials

Research keywords (8)： quasicrystals , scanning transmission electron microscopy (STEM) , differential phase contrast , semiconductor , magnetic materials , intermetallics , interface , grain boundary

Research theme for competitive and other funds (10)：

2021 - 2025 Development of Ultra-Low Electron Dose STEM and Real-Space Real-Space Structural Analysis of Atomic and Molecular Arrangements
2020 - 2025 Development of atomic-resolution magnetic field imaging electron microscopy and its application to interface characterization in magnetic materials
2019 - 2024 Nanoscale Interface Characterization
2021 - 2023 Development and application of ultra-high sensitive atomic-resolution imaging using a high-speed segmented STEM detector
2020 - 2023 Development of low-dose atomic resolution STEM imaging method

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Papers (32)：

Koudai Tabata, Takehito Seki, Scott D. Findlay, Ryo Ishikawa, Ryuji Tamura, Yuichi Ikuhara, Naoya Shibata. Direct Imaging of Atomic Rattling Motion in a Clathrate Compound. Small Science. 2024
Yuji Kohno, Takehito Seki, Shun Tsuruoka, Shinobu Ohya, Naoya Shibata. Magnetic field observation in a magnetic tunnel junction by scanning transmission electron microscopy. Microscopy. 2023
Satoko Toyama, Takehito Seki, Bin Feng, Yuichi Ikuhara, Naoya Shibata. Direct observation of space charge layers at oxide grain boundaries. 2023
Takehito Seki, Toshihiro Futazuka, Nobusato Morishige, Ryo Matsubara, Yuichi Ikuhara, Naoya Shibata. Incommensurate grain-boundary atomic structure. Nature Communications. 2023
Kousuke Ooe, Takehito Seki, Kaname Yoshida, Yuji Kohno, Yuichi Ikuhara, Naoya Shibata. Direct imaging of local atomic structures in zeolite using optimum bright-field scanning transmission electron microscopy. Science Advances. 2023. 9. 31. eadf686

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MISC (30)：

Takehito SEKI, Yuji KOHONO, Yuichi IKUHARA, Naoya SHIBATA. Ultrahigh-resolution Magnetic Field Imaging by Magnetic-field-free Atomic Resolution Electron Microscopy. Vacuum and Surface Science. 2023. 66. 12. 683-688
関岳人, 河野祐二, 幾原雄一, 柴田直哉. 走査透過電子顕微鏡による原子レベルの磁場観察. 固体物理. 2023. 58. 7. 377-383
Kousuke Ooe, Takehito Seki, Yuji Kohno, Akiho Nakamura, Yuichi Ikuhara, Naoya Shibata. Low-dose atomic-resolution observation of beam-sensitive materials via OBF STEM imaging technique. JEOL News. 2023. 58. 1. 21-28
大江耕介, 関岳人, 河野祐二, 中村明穂, 幾原雄一, 柴田直哉. OBF STEMによる電子線敏感材料の低ドーズ原子分解能観察. 日本電子News. 2023. 55. 1. 2-7
Takehito Seki, Yuji Kohno, Yuichi Ikuhara, Naoya Shibata. Atomic-scale Magnetic Field Imaging by Scanning Transmission Electron Microscopy. Solid State Physics. 2023. 58. 21-27

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Patents (2)：

OBSERVATION METHOD BY MEANS OF SCANNING TRANSMISSION ELECTRON MICROSCOPE, SCANNING TRANSMISSION ELECTRON MICROSCOPE SYSTEM, AND PROGRAM
走査型透過電子顕微鏡による測定方法、走査型透過電子顕微鏡システム及びプログラム

Lectures and oral presentations (16)：

DPC STEMの結像理論と局所電磁場解析への応用
(日本顕微鏡学会シンポジウム 2023)
Advancing scanning transmission electron microscopy
(Tsinghua Univ - Univ of Tokyo 8th Joint Symposium 2023)
Advanced Phase Imaging in Scanning Transmission Electron Microscopy
(International Union of Microbeam Analysis Societies 2023)
Direct Electromagnetic Field Imaging at Defects by Differential Phase Contrast Scanning Transmission Electron Microscopy
(4th Japan-Canada Microscopy Societies Workshop 2023)
Development and application of STEM using a segmented detector
(2023)

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Education (1)：

2011 - 2014 The University of Tokyo The Graduate School of Engineering Department of Materials Science and Engineering PhD Course

Professional career (1)：

博士(工学) (東京大学)

Work history (6)：

2024/03 - 現在 The University of Tokyo The Graduate School of Engineering Institute of Engineering Innovation Senior Assistant Professor
2021/10 - 現在 Japan Science and Technology Agency PRESTO Researcher (Concurrent Position)
2019/04 - 2024/02 The University of Tokyo The Graduate School of Engineering Institute of Engineering Innovation Assistant Professor
2015/04 - 2019/03 The University of Tokyo The Graduate School of Engineering Institute of Engineering Innovation Research Fellow
2014/04 - 2015/03 The University of Tokyo Department of Materials Science and Engineering, School of Engineering JSPS Research Fellow (PD)

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Awards (7)：

2023/03 - Quasicrystals meeting AnPang Tsai Award
2022/05 - The Japanese Society of Microscopy Encouragement Award Theoretical Study of Phase Imaging and Development of New Imaging Technique in Scanning Transmission Electron Microscopy
2021/03 - Kazato Research Foundation Kazato Research Encouragement Prize Development and application of ultra-high sensitive atomic-resolution imaging using a high-speed segmented STEM detector
2019/05 - The Japanese Society of Microscopy Award for Scientific Paper (Fundamentals) Boundary-artifact-free determination of potential distribution from differential phase contrast signals
2017/05 - The Japanese Society of Microscopy Award for Scientific Paper (Materials) Local cluster symmetry of a highly ordered quasicrystalline Al58Cu26Ir16 extracted through multivariate analysis of STEM images

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