Details of the Researcher

PHOTO

Yohei Sato
Section
Institute of Multidisciplinary Research for Advanced Materials
Job title
Associate Professor
Degree

  • 博士（理学）（東北大学）

  • 修士（理学）（東北大学）

Research History 3

  • 2017/04 - Present
    Tohoku University　Institute of Multidisciplinary Research for Advanced Materials

  • 2008/08 - 2017/03
    Tohoku University　Institute of Multidisciplinary Research for Advanced Materials

  • 2007/04 - 2008/07
    Tohoku University　Institute of Multidisciplinary Research for Advanced Materials

Education 2

  • Tohoku University　Graduate School of Science　Department of Physics

    2002/04 - 2007/03

  • Tohoku University　Faculty of Science　Department of Physics

    1998/04 - 2002/03

Professional Memberships 2

  • THE JAPANESE SOCIETY OF MICROSCOPY

  • THE PHYSICAL SOCIETY OF JAPAN

Research Interests 3

  • nano-materials

  • Electron microscopy

  • Electron energy-loss spectroscopy

Research Areas 1

  • Nanotechnology/Materials / Inorganic materials /

Awards 5

  1. 科学計測振興賞

    2018/12　科学計測振興基金　高エネルギー分解能EELSによる局所誘電特性解析法の構築と実証

  2. 奨励賞

    2015/05　日本顕微鏡学会　高分解能EELSによるナノスケール物質の誘電物性の研究

  3. 第８回日本物理学会若手奨励賞

    2014/03　日本物理学会　TEM-EELSによるナノ粒子の誘電特性の解明

  4. 第54回原田研究奨励賞

    2014　公益財団法人本多記念会　高エネルギー分解能EELSによるナノスケール材料の物性解明

  5. Paper Award

    2009/05　The Japanese Society of Microscopy　High energy-resolution electron energy-loss spectroscopy study for the electric structure of two-wall carbon nanotubes

Papers 55

  1. Low-Dose Elemental Mapping of Light Atoms in Liquid-phase Materials Using Cryo-EELS

    Daisuke Unabara, Yohei K. Sato, Tasuku Hamaguchi, Koji Yonekura

    Analytical Chemistry　2025/07/31

    Publisher: American Chemical Society (ACS)

    DOI： 10.1021/acs.analchem.5c02121 　

    ISSN： 0003-2700

    eISSN： 1520-6882

  2. TEM-EELS study of compressed graphite phase in high-pressure and high-temperature treated neutron-irradiated graphite Peer-reviewed

    Yuta Ohsawa, Yohei K. Sato, Tomoya Saito, Masami Terauchi, Takashi Kitazume, Takumi Tokunaga, Yuji Higo, Keisuke Niwase, Masahito Niibe, Shin-ichi Honda

    Carbon Trends　19　100487-100487　2025/04

    Publisher: Elsevier BV

    DOI： 10.1016/j.cartre.2025.100487 　

    ISSN： 2667-0569

  3. Derivation method of the dielectric function of amorphous materials using angle-resolved electron energy loss spectroscopy for exciton size evaluation

    Tomoya Saito, Yohei K Sato, Masami Terauchi

    Microscopy　2025/02/04

    DOI： 10.1093/jmicro/dfae056 　

  4. Self-absorption effect in soft X-ray emission spectra utilized for bandgap evaluation of semiconductors Peer-reviewed

    M.Terauchi, Y.K.Sato

    Microscopy　2025/01/24

    Publisher: Oxford University Press (OUP)

    DOI： 10.1093/jmicro/dfae008 　

    ISSN： 2050-5698

    eISSN： 2050-5701

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    Abstract In-situ observation has expanded the application of transmission electron microscopy (TEM) and has made a significant contribution to materials research and development for energy, biomedical, quantum, etc. Recent technological developments related to in-situ TEM have empowered the incorporation of three-dimensional observation, which was previously considered incompatible. In this review article, we take up heating as the most commonly used external stimulus for in-situ TEM observation and overview recent in-situ TEM studies. Then, we focus on the electron tomography (ET) and in-situ heating combined observation by introducing the authors’ recent research as an example. Assuming that in-situ heating observation is expanded from two dimensions to three dimensions using a conventional TEM apparatus and a commercially available in-situ heating specimen holder, the following in-situ heating-and-ET observation procedure is proposed: (i) use a rapid heating-and-cooling function of a micro-electro-mechanical system holder; (ii) heat and cool the specimen intermittently and (iii) acquire a tilt-series dataset when the specimen heating is stopped. This procedure is not too technically challenging and can have a wide range of applications. Essential technical points for a successful 4D (space and time) observation will be discussed through reviewing the authors’ example application.

  5. Anisotropic electronic structure study of MgB2C2 using soft X-ray emission spectroscopy microscopes

    Yuki Hada, Masami Terauchi, Tomoya Saito, Yohei K Sato, Masaaki Baba, Masatoshi Takeda

    Microscopy　2024/10/16

    Publisher: Oxford University Press (OUP)

    DOI： 10.1093/jmicro/dfae048 　

    ISSN： 2050-5698

    eISSN： 2050-5701

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    Abstract The anisotropic electronic structure of MgB2C2 was studied using soft X-ray emission spectroscopy electron microscopes. MgB2C2 fragments were selected by examining C K-emission profiles. C and B K-emission and Mg L-emission spectra were obtained, revealing common and distinct structures that reflect the mixing of valence orbitals. Since the material is reported to have two-dimensional B–C honeycomb layers, the orientational dependence of these emission spectra was also examined. Experimental data were compared with the theoretically calculated partial density of states of the valence bands (VBs) of the material. The C K-emission profile showed an apparent orientational dependence, while the B K-emission exhibited minimal dependence. This difference originated from the different energy distributions of C-2pz and B-2pz components in the VBs. The Mg L-emission intensity was very small, likely due to charge transfer from Mg atoms to B–N layers. The Mg L-emission profile showed a peak related to structures in C-K and B-K. An unexpected intensity was observed just above the VBs, which also showed orientational dependence, possibly due to a small deviation from the ideal composition of Mg:B:C = 1:2:2.

  6. Effect of inorganic material surface chemistry on structures and fracture behaviours of epoxy resin

    Tomohiro Miyata, Yohei K. Sato, Yoshiaki Kawagoe, Keiichi Shirasu, Hsiao-Fang Wang, Akemi Kumagai, Sora Kinoshita, Masashi Mizukami, Kaname Yoshida, Hsin-Hui Huang, Tomonaga Okabe, Katsumi Hagita, Teruyasu Mizoguchi, Hiroshi Jinnai

    Nature Communications　15　(1)　2024/03/08

    Publisher: Springer Science and Business Media LLC

    DOI： 10.1038/s41467-024-46138-6 　

    eISSN： 2041-1723

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    Abstract The mechanisms underlying the influence of the surface chemistry of inorganic materials on polymer structures and fracture behaviours near adhesive interfaces are not fully understood. This study demonstrates the first clear and direct evidence that molecular surface segregation and cross-linking of epoxy resin are driven by intermolecular forces at the inorganic surfaces alone, which can be linked directly to adhesive failure mechanisms. We prepare adhesive interfaces between epoxy resin and silicon substrates with varying surface chemistries (OH and H terminations) with a smoothness below 1 nm, which have different adhesive strengths by ~13 %. The epoxy resins within sub-nanometre distance from the surfaces with different chemistries exhibit distinct amine-to-epoxy ratios, cross-linked network structures, and adhesion energies. The OH- and H-terminated interfaces exhibit cohesive failure and interfacial delamination, respectively. The substrate surface chemistry impacts the cross-linked structures of the epoxy resins within several nanometres of the interfaces and the adsorption structures of molecules at the interfaces, which result in different fracture behaviours and adhesive strengths.

  7. Simple derivation of L-absorption spectra of 3d transition metal elements by the self-absorption effect observed in soft X-ray emission spectra

    Masami Terauchi, Yohei K Sato, Takaomi D Yokoyama, Takanori Murano

    Microscopy　2024/03/05

    Publisher: Oxford University Press (OUP)

    DOI： 10.1093/jmicro/dfae012 　

    ISSN： 2050-5698

    eISSN： 2050-5701

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    Abstract This study proposes a simple evaluation method for deriving L-absorption information from two L-emission spectra of 3d transition metal (TM) elements obtained at two different accelerating voltages. This method realizes a spatial identity for X-ray emission and absorption spectroscopies. This method was evaluated for the Fe L-emission spectra of Fe and its oxides and was applied to the TM L-emission spectra of MnO, Co, CoO and NiO. The derived absorption peak positions were consistent with those obtained previously at synchrotron orbital radiation facilities, which considered the core–hole effect. This simple derivation method could be useful for obtaining X-ray absorption spectroscopy distribution images from X-ray emission spectroscopy mapping data obtained by scanning electron microscopy.

  8. Microscopic Chemical Characterization of Epoxy Resin with Scanning Transmission Electron Microscopy – Electron Energy-Loss Spectroscopy Peer-reviewed

    Hsin-Hui Huang, Tomohiro Miyata, Yohei K. Sato, Teruyasu Mizoguchi, Hiroshi Jinnai, Kaname Yoshida

    Micron　180　103623-103623　2024/03

    Publisher: Elsevier BV

    DOI： 10.1016/j.micron.2024.103623 　

    ISSN： 0968-4328

  9. Anisotropic electronic structure of NaAlSi studied by angle-resolved soft x-ray emission spectroscopy Peer-reviewed

    Ryogo Ebisu, Yohei K. Sato, Takahiro Yamada, Masami Terauchi

    Journal of Applied Physics　134　215107　2023/12

    DOI： 10.1063/5.0178436 　

  10. Deposition of amorphous carbon nitride thin films using pressure-gradient RF magnetron sputtering and their chemical bonding structures Peer-reviewed

    Masami Aono, Masami Terauchi, Yohei K. Sato, Kyoji Morita, Tasuku Inoue, Kazuhiro Kanda, Ken Yonezawa

    Applied Surface Science　635　(30)　157677-157677　2023/10

    Publisher: Elsevier BV

    DOI： 10.1016/j.apsusc.2023.157677 　

    ISSN： 0169-4332

  11. Investigation of the Electronic Structure of the Mg99.2Zn0.2Y0.6 Alloy Using X-ray Photoelectron Spectroscopy

    Hidetoshi Miyazaki, Tatsuyoshi Akatsuka, Koji Kimura, Daisuke Egusa, Yohei K. Sato, Mitsuhiro Itakura, Yasumasa Takagi, Akira Yasui, Kenichi Ozawa, Kazuhiko Mase, Toko Tokunaga, Kouichi Hayashi, Koji Hagihara, Eiji Abe

    MATERIALS TRANSACTIONS　64　(6)　1194-1198　2023/06/01

    Publisher: Japan Institute of Metals

    DOI： 10.2320/matertrans.mt-md2022019 　

    ISSN： 1345-9678

    eISSN： 1347-5320

  12. STEM-EELS/EDS Chemical Analysis of Solute Clusters in a Dilute Mille-Feuille-Type Mg–Zn–Y Alloy Peer-reviewed

    Yohei K. Sato, Daisuke Egusa, Hidetoshi Miyazaki, Koji Kimura, Mitsuhiro Itakura, Masami Terauchi, Eiji Abe

    MATERIALS TRANSACTIONS　64　(5)　950-954　2023/04

    Publisher: Japan Institute of Metals

    DOI： 10.2320/matertrans.mt-md2022023 　

    ISSN： 1345-9678

    eISSN： 1347-5320

  13. Examining the anisotropic behavior of the excitons in anatase TiO2 by angle-resolved electron energy-loss spectroscopy Peer-reviewed

    Tomoya Saito, Yohei K. Sato, Masami Terauchi

    Journal of Applied Physics　133　105701-1-105701-9　2023/03

    DOI： 10.1063/5.0140536 　

  14. Chemistry of zipping reactions in mesoporous carbon consisting of minimally stacked graphene layers Peer-reviewed

    Tian Xia, Takeharu Yoshii, Keita Nomura, Keigo Wakabayashi, Zheng-Ze Pan, Takafumi Ishii, Hideki Tanaka, Takashi Mashio, Jin Miyawaki, Toshiya Otomo, Kazutaka Ikeda, Yohei Sato, Masami Terauchi, Takashi Kyotani, Hirotomo Nishihara

    Chemical Science　14　(32)　8448-8457　2023

    Publisher: Royal Society of Chemistry (RSC)

    DOI： 10.1039/d3sc02163g 　

    ISSN： 2041-6520

    eISSN： 2041-6539

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    The structural evolution of highly mesoporous templated carbons is examined from temperatures of 1173 to 2873 K to elucidate the optimal conditions for facilitating graphene-zipping reactions whilst minimizing graphene stacking...

  15. Atomic-scale analysis on a rubber-brass adhesive interface using scanning transmission electron microscopy Peer-reviewed

    Tomohiro Miyata, Katsunori Shimizu, Yohei K. Sato, Hiroshi Jinnai

    Polymer　265　125602-125602　2023/01

    Publisher: Elsevier BV

    DOI： 10.1016/j.polymer.2022.125602 　

    ISSN： 0032-3861

  16. Electron irradiation damage of amorphous epoxy resin at low electron doses

    Kaname Yoshida, Hsin-Hui Huang, Tomohiro Miyata, Yohei K Sato, Hiroshi Jinnai

    Microscopy　72　(4)　361-367　2022/12/10

    Publisher: Oxford University Press (OUP)

    DOI： 10.1093/jmicro/dfac068 　

    ISSN： 2050-5698

    eISSN： 2050-5701

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    Abstract The mechanisms of electron irradiation damage to epoxy resin samples were evaluated using their electron diffraction patterns and electron energy-loss (EEL) spectra. Their electron diffraction patterns consisted of three indistinct halo rings. The halo ring, related to an intermolecular distance of ~6.4 Å, degraded rapidly with electron beam irradiation. Such molecular-scale collapse could have been caused by cross-linking between molecular chains. The degree of electron irradiation damage to the samples changed with the accelerating voltage. Tolerance dose limit of epoxy resin estimated from the intensity of the halo ring was found to be improved at higher accelerating voltage. Changes in low-loss EEL spectra indicated that the mass loss of epoxy resin was remarkable in the early stage of electron irradiation.

  17. Characteristics and exchange interactions observed in L-emission spectra of Fe, Mn and their oxides by using a high-energy-resolution soft X-ray emission spectroscopy instrument Peer-reviewed

    Masami Terauchi, Ryogo Ebisu, Yohei K Sato, Masato Koike

    Microscopy　72　(3)　243-248　2022/11/21

    Publisher: Oxford University Press (OUP)

    DOI： 10.1093/jmicro/dfac062 　

    ISSN： 2050-5698

    eISSN： 2050-5701

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    Abstract For examining the characteristics of L-emission spectra of Fe, Mn and their oxides, a larger energy-dispersion spectrometer for an electron probe microanalyser was constructed. The energy resolution was evaluated to be 0.3 eV at the Fermi edge observed for the B K-emission of LaB6. The Lα,β-emission profiles and peak positions of those oxides were different from those of pure metals, reflecting the different density of states of valence bands and different charge states of metal elements. The Lℓ-emission profiles of the oxides showed shoulder structures, even though the emission is caused by transitions between two inner shell levels. The presence of the shoulder structures was assigned to the result of the 3s3d exchange interaction in the final state of the Lℓ emission, in which the 3s state has a spin. The Lℓ profiles were decomposed into two peaks by Lorentz fit, and the energy separation was evaluated to be ∼3 eV.

  18. Evaluation of exchange-correlation effects on the heat-shielding performance of carrier electrons in LaB6 using momentum-transfer resolved electron energy-loss spectroscopy Peer-reviewed

    Yohei K. Sato, Masami Terauchi

    Journal of Applied Physics　131　(6)　063104-063104　2022/02/14

    Publisher: AIP Publishing

    DOI： 10.1063/5.0076692 　

    ISSN： 0021-8979

    eISSN： 1089-7550

  19. In situ observation of the chemical bonding state of Si in the molten state of eutectic Au–Si alloy of Au81Si19 by using a soft X-ray emission spectroscopy electron microscope

    Masami Terauchi, Naoya Umemoto, Yohei K. Sato, Masaki Ageishi, An-Pang Tsai

    Microscopy　71　(1)　34-40　2021/08/06

    Publisher: Oxford University Press (OUP)

    DOI： 10.1093/jmicro/dfab029 　

    ISSN： 2050-5698

    eISSN： 2050-5701

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    <title>Abstract</title> Phase diagram of Au–Si binary alloy system shows a large drop in melting temperature of about 1000K compared with that of Si at a composition of Au:Si = 81:19, where the melting temperature is about 636K. Mixing of Au and Si below the melting temperature was observed by transmission electron microscopy experiment, and it was found that the mixed region shows a diffraction pattern of a diffuse ring intensity indicating an amorphous structure of the mixed area. Si L-emission spectra, which reflect the energy state of bonding electrons of Si atom, of molten Au81Si19 alloy were measured for the first time to investigate the energy state of valence electrons of Si. The Si L-emission spectrum showed a characteristic loss of L1 peak, which is related to sp3 directional bonding in crystalline Si. The intensity profile is also different from that of molten Si reported. This suggests a characteristic atomic arrangement that exists in the molten state. The intensity profile also indicated a small density of state in the molten state at Fermi energy. The obtained spectrum was compared with the calculated density of state of possible crystal structures reported. The comparison suggested that Si atoms are surrounded by eight Au atoms in the molten state of Au81Si19 alloy. The formation of this local atomic arrangement can be an origin of a large drop of melting temperature at about Au:Si = 81:19.

  20. Chemical state mapping of p/n-controlled SrB6 bulk specimens by soft X-ray emission electron microscope

    M. Terauchi, Y. K. Sato, M. Takeda

    Applied Science　11　9588　2021

  21. Visualization of chemical bonding in a silica-filled rubber nanocomposite using STEM-EELS

    Yohei K. Sato, Yasufumi Kuwauchi, Wakana Miyoshi, Hiroshi Jinnai

    Scientific Reports　10　(1)　2020/12

    Publisher: Springer Science and Business Media LLC

    DOI： 10.1038/s41598-020-78393-0 　

    eISSN： 2045-2322

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    <title>Abstract</title>In nanocomposites, the adhesion between nanofillers and the polymeric matrix is key to the mechanical properties. The strength and spatial distribution of the adhesive layer around the nanofillers are important, particularly the presence of chemical bonding between the nanofillers and matrix. In this work, we studied a styrene-butadiene rubber composite filled with silica nanoparticles to visualize the spatial distribution of the adhesive layer. A silane coupling agent (SCA) was added to the nanocomposite for strong adhesion. The reaction involving the SCA on the silica surface was investigated by scanning transmission electron microscopy combined with electron energy-loss spectroscopy. Si-L2,3 spectra of the silica-filled rubber nanocomposite without the SCA were the same around the nanofillers, whereas in the nanocomposite containing the SCA the spectra were position-dependent. The spectra were fitted with the intensity profiles of the Si-L2,3 spectra of silica and SCA by multiple linear least-squares fitting. The fitting coefficients of silica and SCA were used to map the spatial distribution of the chemical bonding between silica and rubber chains. Chemical bonding was observed around the silica nanoparticles but not in the SBR matrix region, providing direct evidence of the reinforcing mechanism in the silica-filled rubber nanocomposite.

  22. Photoinduced deformation of a-C thin films prepared by RF magnetron sputtering Peer-reviewed

    Masami Aono, Hisashi Miyazaki, Nobuaki Kitazawa, Yohei Sato, Masami Terauchi

    Diamond and Related Materials　108　2020/10

    DOI： 10.1016/j.diamond.2020.107844 　

    ISSN： 0925-9635

  23. Anisotropic dielectric properties and ensemble inhomogeneity of cesium-doped tungsten oxide nanoparticles studied by electron energy loss spectroscopy Peer-reviewed

    Keisuke Machida, Kenji Adachi, Yohei K. Sato, Masami Terauchi

    JOURNAL OF APPLIED PHYSICS　128　(8)　2020/08

    DOI： 10.1063/5.0003007 　

    ISSN： 0021-8979

    eISSN： 1089-7550

  24. Experimental determination of solidified lithium disilicate crystal bandgap energy using EELS and XPS Peer-reviewed

    Masanori Tashiro, Sohei Sukenaga, Sakiko Kawanishi, Yohei Sato, Yuji Takakuwa, Hiroyuki Shibata

    Journal of the American Ceramic Society　103　(9)　5139-5144　2020/05/28

    Publisher: Wiley

    DOI： 10.1111/jace.17221 　

    ISSN： 0002-7820

    eISSN： 1551-2916

  25. Anisotropic plasmons due to carrier electrons in Cs-doped hexagonal WO3 studied by momentum transfer resolved electron energy-loss spectroscopy Peer-reviewed

    Yohei K. Sato, Masami Terauchi, Kenji Adachi

    JOURNAL OF APPLIED PHYSICS　126　(18)　185107　2019/11

    DOI： 10.1063/1.5115068 　

    ISSN： 0021-8979

    eISSN： 1089-7550

  26. Orientation-controlled, low-temperature plasma growth and applications of h-BN nanosheets Peer-reviewed

    Ivan Sergeevich Merenkov, Ivan Sergeevich Merenkov, Mikhail Sergeevich Myshenkov, Yuri Mikhailovich Zhukov, Yohei Sato, Tatyana Sergeevna Frolova, Tatyana Sergeevna Frolova, Tatyana Sergeevna Frolova, Denis Vasilevich Danilov, Igor Alekseevich Kasatkin, Oleg Sergeevich Medvedev, Roman Vladimirovich Pushkarev, Olga Ivanovna Sinitsyna, Olga Ivanovna Sinitsyna, Masami Terauchi, Irina Alekseevna Zvereva, Marina Leonidovna Kosinova, Ken Ostrikov, Ken Ostrikov

    Nano Research　12　(1)　91-99　2019/01

    DOI： 10.1007/s12274-018-2185-7 　

    ISSN： 1998-0124

  27. Non-uniform Excitation States in Photoinduced Deformation of Amorphous Carbon Nitride Films Peer-reviewed

    Masami Aono, Tomo Harata, Nobuaki Kitazawa, Hiroshi Abe, Shingo Ishii, Yohei Sato, Masami Terauchi

    Scientific Reports　8　(1)　2018/12

    DOI： 10.1038/s41598-018-33364-4 　

    ISSN： 2045-2322

    eISSN： 2045-2322

  28. Dielectric Properties of Photo-Luminescent CdSe/CdS Mono-Shell and CdSe/CdS/ZnS Multi-Shell Nanocrystals Studied by TEM-EELS Peer-reviewed

    Sato Yohei, Nakahigashi Naoyuki, Terauchi Masami, Uehara Masato

    ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY　7　(11)　R167-R174　2018/10/20

    DOI： 10.1149/2.0061811jss 　

    ISSN： 2162-8769

  29. Soft X-ray emission spectroscopy study of characteristic bonding states and its distribution of amorphous carbon-nitride (a-CNx) films Peer-reviewed

    Shingo Ishii, Masami Terauchi, Yohei Sato, Naoyuki Tamura, Masami Aono, Hiroshi Abe

    Microscopy　67　(4)　244-249　2018/08/01

    DOI： 10.1093/jmicro/dfy024 　

    ISSN： 2050-5698

    eISSN： 2050-5701

  30. Electron energy-loss and soft X-ray emission spectroscopy of electronic structure of MgB4 Peer-reviewed

    Yohei Sato, Taiki Saito, Kohei Tsuchiya, Masami Terauchi, Hiroki Saito, Masatoshi Takeda

    JOURNAL OF SOLID STATE CHEMISTRY　253　58-62　2017/09

    DOI： 10.1016/j.jssc.2017.05.007 　

    ISSN： 0022-4596

    eISSN： 1095-726X

  31. Modification of dielectric functions by lattice defects in lightly-absorbing LaB6 nanoparticles studied with effective medium theory

    Keisuke Machida, Satoshi Yoshio, Kenji Adachi, Yohei Sato, Masami Terauchi

    JOURNAL OF APPLIED PHYSICS　121　(22)　2017/06

    DOI： 10.1063/1.4984934 　

    ISSN： 0021-8979

    eISSN： 1089-7550

  32. Direct evaluation about structure and optical property of individual multi-shell quantum dot by TEM

    M. Uehara, N. Nakahigashi, Y. Sato, M. Terauchi

    ECS Transactions　75　(53)　7-12　2017

    Publisher: Electrochemical Society Inc.

    DOI： 10.1149/07553.0007ecst 　

    ISSN： 1938-5862 1938-6737

  33. Heterogeneous diamond phases in compressed graphite studied by electron energy-loss spectroscopy Peer-reviewed

    Yohei Sato, Matthieu Bugnet, Masami Terauchi, Gianluigi A. Botton, Akira Yoshiasa

    DIAMOND AND RELATED MATERIALS　64　190-196　2016/04

    DOI： 10.1016/j.diamond.2016.02.010 　

    ISSN： 0925-9635

    eISSN： 1879-0062

  34. Postsynthesis of h-BN/Graphene Heterostructures Inside a STEM Peer-reviewed

    Zheng Liu, Luiz H. G. Tizei, Yohei Sato, Yung-Chang Lin, Chao-Hui Yeh, Po-Wen Chiu, Masami Terauchi, Sumio Iijima, Kazu Suenaga

    SMALL　12　(2)　252-259　2016/01

    DOI： 10.1002/smll.201502408 　

    ISSN： 1613-6810

    eISSN： 1613-6829

  35. Good reproductive preparation method of Li-intercalated hexagonal boron nitride and transmission electron microscopy - Electron energy loss spectroscopy analysis Peer-reviewed

    A. Sumiyoshi, H. Hyodo, Y. Sato, M. Terauchi, K. Kimura

    Solid State Sciences　47　67-72　2015/09

  36. Electronic structures of three-dimensional C-60 polymers studied by high-energy-resolution electron energy-loss spectroscopy based on transmission electron microscopy Peer-reviewed

    Yohei Sato, Masami Terauchi, Shoji Yamanaka

    CHEMICAL PHYSICS LETTERS　626　90-95　2015/04

    DOI： 10.1016/j.cplett.2015.03.017 　

    ISSN： 0009-2614

    eISSN： 1873-4448

  37. Van der Waals epitaxial growth of topological insulator Bi2-xSbxTe3-ySey ultrathin nanoplate on electrically insulating fluorophlogopite mica

    Ngoc Han Tu, Yoichi Tanabe, Khuong Kim Huynh, Yohei Sato, Hidetoshi Oguro, Satoshi Heguri, Kenji Tsuda, Masami Terauchi, Kazuo Watanabe, Katsumi Tanigaki

    APPLIED PHYSICS LETTERS　105　(6)　2014/08

    DOI： 10.1063/1.4892576 　

    ISSN： 0003-6951

    eISSN： 1077-3118

  38. High-Energy Resolution Electron Energy-Loss Spectroscopy Study of Interband Transitions Characteristic to Single-Walled Carbon Nanotubes Peer-reviewed

    Yohei Sato, Masami Terauchi

    MICROSCOPY AND MICROANALYSIS　20　(3)　807-814　2014/06

    DOI： 10.1017/S1431927614000580 　

    ISSN： 1431-9276

    eISSN： 1435-8115

  39. High energy-resolution electron energy-loss spectroscopy and soft-x-ray emission spectroscopy studies of amorphous diamond transformed from neutron-irradiated graphite Peer-reviewed

    Y Sato, M Terauchi, K Niwase, K G Nakamura, T Atou, T Iwata

    Journal of Physics: Conference Series　500　(19)　192013-192013　2014/05/07

    Publisher: IOP Publishing

    DOI： 10.1088/1742-6596/500/19/192013 　

    eISSN： 1742-6596

  40. Electron diffraction and electron energy-loss spectroscopy studies of a hybrid material composed of coronene molecules encapsulated in single-walled carbon nanotubes Peer-reviewed

    Md. Mahbubul Haque, Yohei Sato, Masami Terauchi, Yoko Iizumi, Toshiya Okazaki

    MICROSCOPY　63　(2)　111-117　2014/04

    DOI： 10.1093/jmicro/dft049 　

    ISSN： 2050-5698

    eISSN： 2050-5701

  41. Formation of crosslinked-fullerene-like framework as negative replica of zeolite y

    Nueangnoraj, K., Nishihara, H., Imai, K., Itoi, H., Ishii, T., Kiguchi, M., Sato, Y., Terauchi, M., Kyotani, T.

    Carbon　62　455-464　2013

    DOI： 10.1016/j.carbon.2013.06.033 　

    ISSN： 0008-6223

  42. High energy-resolution electron energy-loss spectroscopy study on the near-infrared scattering mechanism of Cs0.33WO3 crystals and nanoparticles

    Yohei Sato, Masami Terauchi, Kenji Adachi

    JOURNAL OF APPLIED PHYSICS　112　(7)　2012/10

    DOI： 10.1063/1.4752867 　

    ISSN： 0021-8979

  43. High energy-resolution electron energy-loss spectroscopy analysis of dielectric property and electronic structure of hexagonal diamond Peer-reviewed

    Yohei Sato, Masami Terauchi, Wataru Inami, Akira Yoshiasa

    DIAMOND AND RELATED MATERIALS　25　40-44　2012/05

    DOI： 10.1016/j.diamond.2012.02.013 　

    ISSN： 0925-9635

    eISSN： 1879-0062

  44. High energy-resolution electron energy-loss spectroscopy study of the dielectric properties of bulk and nanoparticle LaB6 in the near-infrared region Peer-reviewed

    Yohei Sato, Masami Terauchi, Masaki Mukai, Toshikatsu Kaneyama, Kenji Adachi

    ULTRAMICROSCOPY　111　(8)　1381-1387　2011/07

    DOI： 10.1016/j.ultramic.2011.05.003 　

    ISSN： 0304-3991

  45. Superconductivity in Li-doped alpha-rhombohedral boron Peer-reviewed

    T. Nagatochi, H. Hyodo, A. Sumiyoshi, K. Soga, Y. Sato, M. Terauchi, F. Esaka, K. Kimura

    PHYSICAL REVIEW B　83　(18)　184507-1-184507-5　2011/05

    DOI： 10.1103/PhysRevB.83.184507 　

    ISSN： 1098-0121

  46. Soft X-ray emission spectroscopy study of the valence electron states of α-rhombohedral boron

    Masami Terauchi, Yohei Sato, Hiroshi Hyodo, Kaoru Kimura

    Journal of Physics: Conference Series　176　012025-012025　2009/06/01

    Publisher: IOP Publishing

    DOI： 10.1088/1742-6596/176/1/012025 　

    eISSN： 1742-6596

  47. Electron energy-loss and soft X-ray emission study of boron nanobelts

    Yohei Sato, Masami Terauchi, Kazuhiro Kirihara, Takeshi Sasaki, Kenji Kawaguchi, Naoto Koshizaki, Kaoru Kimura

    Journal of Physics: Conference Series　176　012029-012029　2009/06/01

    Publisher: IOP Publishing

    DOI： 10.1088/1742-6596/176/1/012029 　

    eISSN： 1742-6596

  48. A possible buckybowl-like structure of zeolite templated carbon Peer-reviewed

    Hirotomo Nishihara, Quan-Hong Yang, Peng-Xiang Hou, Masashi Unno, Seigo Yamauchi, Riichiro Saito, Juan I. Paredes, Amelia Martinez-Alonso, Juan M. D. Tascon, Yohei Sato, Masami Terauchi, Takashi Kyotani

    CARBON　47　(5)　1220-1230　2009/04

    DOI： 10.1016/j.carbon.2008.12.040 　

    ISSN： 0008-6223

  49. Relation between peak structures of loss functions of single double-walled carbon nanotubes and interband transition energies Peer-reviewed

    Yohei Sato, Masami Terauchi, Yahachi Saito, Kentaro Sato, Riichiro Saito

    JOURNAL OF ELECTRON MICROSCOPY　57　(4)　129-132　2008/08

    DOI： 10.1093/jmicro/dfn012 　

    ISSN： 0022-0744

  50. Mg-doping into boron icosahedral cluster solids, targeting high temperature superconductivity Peer-reviewed

    H. Hyodo, S. Hosoi, S. Araake, K. Soga, Y. Sato, M. Terauchi, K. Kimura

    TRANSACTIONS OF THE MATERIALS RESEARCH SOCIETY OF JAPAN, VOL 33, NO 2　33　(2)　303-306　2008

  51. Structure and electronic properties of Mg-doped beta-rhombohedral boron constructed from icosahedral clusters

    H. Hyodo, S. Araake, S. Hosoi, K. Soga, Y. Sato, M. Terauchi, K. Kimura

    PHYSICAL REVIEW B　77　(2)　2008/01

    DOI： 10.1103/PhysRevB.77.024515 　

    ISSN： 1098-0121

  52. Enhanced direct interband transitions in silicon nanowires studied by electron energy-loss spectroscopy Peer-reviewed

    J. Kikkawa, S. Takeda, Y. Sato, M. Terauchi

    PHYSICAL REVIEW B　75　(24)　2007/06

    DOI： 10.1103/PhysRevB.75.245317 　

    ISSN： 1098-0121

  53. High energy-resolution electron energy-loss spectroscopy study of the electric structure of double-walled carbon nanotubes Peer-reviewed

    Yohei Sato, Masami Terauchi, Yahachi Saito, Riichiro Saito

    JOURNAL OF ELECTRON MICROSCOPY　55　(3)　137-142　2006/06

    DOI： 10.1093/jmicro/dfl021 　

    ISSN： 0022-0744

  54. High energy-resolution electron energy-loss spectroscopy study of the electronic structure of two-wall carbon nanotubes Invited Peer-reviewed

    Y. Sato, M. Tereauchi, Y. Saito, R. Saito

    Abstract of EDGE2005 International EELS workshop　135　2005/05/01

  55. High-energy-resolution electron energy-loss spectroscopy study of the electronic structure of Cu- and Mg-Si- doped β-rhombohedral boron crystals Peer-reviewed

    Masami Terauchi, Yohei Sato, Takahiro Nakayama, Atsushi Oguri, Kohei Soga, Kaoru Kimura

    Journal of Solid State Chemistry　177　2916-2919　2004

Show all ︎Show first 5

Misc. 73

  1. Acoustic Oscillations on Piezoelectric Materials Excited by a GHz Pulsed Electron Beam

    Yohei K Sato, Kenji Tsuda, Spencer A Reisbick, Daisuke Morikawa, Masami Terauchi, Yimei Zhu

    Microscopy and Microanalysis　30　(Supplement_1)　2024/07/24

    Publisher: Oxford University Press (OUP)

    DOI： 10.1093/mam/ozae044.713 　

    ISSN： 1431-9276

    eISSN： 1435-8115

  2. STEM-EELSによるシリカフィラーと高分子の化学結合の可視化

    佐藤庸平, 三好和加奈, 陣内浩司

    月刊マテリアルステージ5月号　23　(2)　13-18　2023/05

  3. Study of growth direction distribution of chemical bonding states in amorphous carbon nitride thin films for photoinduced deformation phenomenon

    青野祐美, 島宏美, 小松啓志, 佐藤庸平, 寺内正己

    応用物理学会秋季学術講演会講演予稿集(CD-ROM)　84th　2023

    ISSN： 2758-4704

  4. Synthesis of Mg-B compound by flux method and their electronic structures studied by microscopic SXES

    羽田有希, 斎藤興也, 佐藤庸平, 寺内正己, 池田颯, 齊藤大貴, 馬場奨亮, 武田雅敏

    日本物理学会講演概要集(CD-ROM)　78　(1)　2023

    ISSN： 2189-079X

  5. Chemical State Mapping of Bulk Materials by Electron Microscopy Based Soft X-ray Emission Spectroscopy

    寺内正己, 佐藤庸平, 武田雅敏

    まてりあ　60　(6)　2021

    ISSN： 1340-2625

  6. In situ X-ray diffraction study on structural changes of neutron-irradiated highly oriented pyrolytic graphite under high-temperature compression and decompression

    Nakamura Wataru, Nakamura Syusaku, Fujii Syunjiro, Honda Shin-ichi, Niibe Masahito, Terasawa Michitaka, Higo Yuji, Niwase Keisuke, Sato Yohei

    Abstract book of Annual Meeting of the Japan Society of Vacuum and Surface Science　2021　3P14　2021

    Publisher: The Japan Society of Vacuum and Surface Science

    DOI： 10.14886/jvss.2021.0_3p14 　

    ISSN： 2434-8589

    eISSN： 2434-8589

    More details Close

    In this study, we focused on the peak of the graphite (002) [G(002)] plane of neutron-irradiated highly oriented pyrolytic graphite (HOPG) using in-situ X-ray diffraction method and analyzed the structural change during the compression and decompression processes at high temperature in order to understand the details of the transformation mechanism of neutron-irradiated HOPG. It was found that the G(002) peak can be represented by two components from RT to about 600°C, and it can be represented by only one component at the higher temperature in the neutron-irradiated sample, whereas it can be represented by only one component in the unirradiated sample.

  7. 中性子照射された高配向性熱分解グラファイトの高温高圧下での構造変化に関するその場X線回折観察

    中村航, 中村周作, 藤井俊治郎, 本多信一, 新部正人, 寺澤倫孝, 肥後祐司, 庭瀬敬右, 佐藤庸平

    放射線プロセスシンポジウム講演要旨・ポスター発表要旨集　18th　2021

  8. Electron Energy-Loss Spectroscopy Analysis of Dielectric Properties of Materials Invited

    Yohei K. Sato, Masami Terauchi

    55　(2)　75-82　2020/08

  9. PM-06 Electronic Structure of Nitrogen-Doped Graphite Films Studied by Soft X-ray Emission Spectroscopy

    K Matsuura, Y Sato, M Terauchi, M Aono, S Hashimoto, S Ogawa, Y Takakuwa

    Microscopy　68　(Supplement_1)　i37-i37　2019/11/01

    Publisher: Oxford University Press (OUP)

    DOI： 10.1093/jmicro/dfz092 　

    ISSN： 2050-5698

    eISSN： 2050-5701

  10. PM-05 Anisotropic Electronic Structure of Metal Borides Studied by Soft X-ray Emission Spectroscopy

    Takeshi Ito, Yohei Sato, Masami Terauchi

    Microscopy　68　(Supplement_1)　i37-i37　2019/11/01

    Publisher: Oxford University Press (OUP)

    DOI： 10.1093/jmicro/dfz088 　

    ISSN： 2050-5698

    eISSN： 2050-5701

  11. 軟X線発光分光を用いた熱電材料MB6(M=Ca,Sr)の研究

    寺内正己, 佐藤庸平, 武田雅敏

    日本物理学会講演概要集(CD-ROM)　74　(2)　2019

    ISSN： 2189-079X

  12. Non-uniform Distribution of Doped Carrier in a Na-doped CaB6 Bulk Material Observed by EPMA-SXES

    M. Terauchi, Y. Sato, M. Takeda, T. Hatano, M. Koike, H. Sasai, T. Nagano, M. Koeda, T. Murano, H. Takahashi

    Microscopy & Microanalysis　24　(suppl.1)　746-747　2018/08

  13. Chemical State Analyses by Soft X-ray Emission Spectroscopy

    M. Terauchi, Y. Sato

    JEOL NEWS　53　(1)　30-35　2018/08

  14. 軟X線発光分光（SXES）を用いた化学結合状態分析 Invited

    寺内正己, 佐藤庸平

    日本電子news　50　(1)　13-18　2018/05

  15. 軟X線発光分光による熱電材料CaB6の研究

    寺内正己, 佐藤庸平, 武田雅敏

    日本物理学会講演概要集(CD-ROM)　73　(2)　2018

    ISSN： 2189-079X

  16. TEM-EELS/XESを用いたMgB4電子構造の研究

    佐藤庸平, 齋藤泰樹, 土谷公平, 寺内正己, 齋藤広樹, 武田雅敏

    東北大学多元物質科学研究所研究発表会講演予稿集　16th　2016

  17. 22aAF-4 Electronic structures of a-CN_x studied by SXES

    Ishii S, Terauchi M, Sato Y, Aono M, Abe H, Tamura N

    Meeting Abstracts of the Physical Society of Japan　71　(0)　2748-2748　2016

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.71.1.0_2748 　

    ISSN： 2189-079X

  18. 16aAB-3 SXES and EELS studies on electronic structures of a-CN_x

    Ishii S, Terauchi M, Sato Y, Aono M, Abe H, Tamura N

    Meeting Abstracts of the Physical Society of Japan　70　(0)　2394-2394　2015

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.70.2.0_2394 　

    ISSN： 2189-079X

  19. 高分解能EELSによる六方晶ダイヤモンド粒子の誘電特性

    佐藤庸平, 寺内正己, 居波渉, 吉朝朗

    ニューダイヤモンド　30　(2)　6-10　2014/04

  20. 28pAL-2 TEM-EELS studies for the dielectric properties of nano-scaled particles

    Sato Y.

    Meeting abstracts of the Physical Society of Japan　69　(1)　927-927　2014/03/05

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  21. 30pCB-1 Optical properties of X-XII intermetallic compounds studied by TEM-EELS

    Sato Y.

    Meeting abstracts of the Physical Society of Japan　69　(1)　818-818　2014/03/05

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  22. 高分解能EELSによる六方晶ダイヤモンド粒子の誘電特性

    佐藤庸平, 寺内正己, 居波渉, 吉朝朗

    日本結晶学会誌　55　(5)　302-307　2013/10

    Publisher: The Crystallographic Society of Japan

    DOI： 10.5940/jcrsj.55.302 　

    ISSN： 0369-4585

    More details Close

    Electronic structure of hexagonal diamond（h-DIA）was investigated by using high energyresolution electron energy-loss spectroscopy（EELS）based on transmission electron microscopy. The dielectric function of h-DIA was derived by Kramers-Kronig analysis of the EELS spectrum. Core electron excitation spectrum of h-DIA revealed density of states in conduction band,which was different distribution from that of cubic diamond. The electronic structure of h-DIA was experimentally revealed for the first time.

  23. TEM-EELS study of the dielectric response of CdSe/CdS/ZnS nanoparticles

    Sato Yohei, Terauchi Masami, Uehara Masato

    Meeting abstracts of the Physical Society of Japan　68　(2)　857-857　2013/08/26

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  24. Study of local structural fluctuations of BaTiO_3 using electron energy-loss spectroscopy and X-ray emission spectroscopy

    Tsuda K., Sato Y., Terauchi M., Tanaka M.

    Meeting abstracts of the Physical Society of Japan　68　(2)　861-861　2013/08/26

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  25. Electronic structure study of intermetallic compounds consisting of 10-12 group elements by TEM-EELS

    Sato Y., Terauchi M., Kameoka S., Tsai A.P.

    Meeting abstracts of the Physical Society of Japan　68　(2)　716-716　2013/08/26

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  26. 29aXP-3 The creation of alkali metal h-BN intercalation compounds

    Sumiyoshi A., Hyodo H., Sato Y., Terauchi M., Kimura K.

    Meeting abstracts of the Physical Society of Japan　68　(1)　960-960　2013/03/26

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  27. 29pEP-5 TEM-EELS study of X-XII intermetalic compounds

    Sato Y., Terauchi M., Kameoka S., Tsai A. P.

    Meeting abstracts of the Physical Society of Japan　68　(1)　896-896　2013/03/26

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  28. 20pCA-5 TEM-EELS study of intermetallic compounds having Cu catalytic properties

    Sato Y., Terauchi M., Kameoka S., Tsai A. P.

    Meeting abstracts of the Physical Society of Japan　67　(2)　744-744　2012/08/24

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  29. 18pEC-9 TEM-EELS study of the electronic structure of CaB_6 doped Sr

    Saito T., Sato Y., Terauchi M., Inayoshi K., Takeda M.

    Meeting abstracts of the Physical Society of Japan　67　(2)　759-759　2012/08/24

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  30. 18pEC-10 TEM-EELS study of the electronic structure of MgB4

    Saito T., Sato Y., Terauchi M., Saito H., Takeda M.

    Meeting abstracts of the Physical Society of Japan　67　(2)　760-760　2012/08/24

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  31. 21aAG-10 Non vertical transition study of semiconductors by momentum resolved EELS measurement

    Sato Y., Terauchi M.

    Meeting abstracts of the Physical Society of Japan　67　(2)　884-884　2012/08/24

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  32. 21aEC-8 TEM/EELS studies of coronenes inside single-walled carbon nanotube

    Haque Md. Mahbubul, Sato Yohei, Terauchi Masami, Okazaki Toshiya, Iizumi Yoko

    Meeting abstracts of the Physical Society of Japan　67　(2)　804-804　2012/08/24

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  33. 27aGF-11 TEM-EELS study of electronic structure of PdZn

    Sato Y., Terauchi M., Kameoka S., Tsai A. P.

    Meeting abstracts of the Physical Society of Japan　67　(1)　859-859　2012/03/05

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  34. 24aCJ-3 TEM-EELS study of the electronic structure of MgB_4

    Saito T., Sato Y., Terauchi M., Saito H., Takeda M.

    Meeting abstracts of the Physical Society of Japan　67　(1)　873-873　2012/03/05

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  35. 21aTD-1 TEM-EELS study of electronic structures of 3D-C_<60> polymer

    Sato Y., Terauchi M., Yamanaka S.

    Meeting abstracts of the Physical Society of Japan　66　(2)　833-833　2011/08/24

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  36. 21aJA-6 HR-EELS study of electronic structure of Cs doped WO_3

    Sato Y., Terauchi M., Adachi K.

    Meeting abstracts of the Physical Society of Japan　66　(2)　969-969　2011/08/24

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  37. 24aTG-5 TEM/EELS studies of polyynes inside SWCNT

    Haque Md. Mahbubul, Sato Yohei, Terauchi Masami, Wakabayashi Tomonari

    Meeting abstracts of the Physical Society of Japan　66　(2)　893-893　2011/08/24

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  38. Electron-crystallography and -spectroscopy based on TEM

    Materials integration　24　(4)　208-211　2011/04

    Publisher: ティー・アイ・シィー

    ISSN： 1344-7858

  39. 27pTN-9 The study of NIR absorption mechanism of Cs_xWO_3 nanoparticles by HR-EELS

    Sato Y., Terauchi M., Adachi K.

    Meeting abstracts of the Physical Society of Japan　66　(1)　986-986　2011/03/03

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  40. TEM-EELS/XESによるアモルファスダイヤモンドの電子構造の研究

    佐藤庸平, 寺内正己, 庭瀬敬右, 中村一隆, 岩田忠夫

    日本物理学会講演概要集　66　(2)　2011

    ISSN： 1342-8349

  41. 25pWZ-6 High energy-resorution EELS study of electronic structures of Cs_xWO_3

    Funao T., Sato Y., Terauchi M., Adachi K.

    Meeting abstracts of the Physical Society of Japan　65　(2)　921-921　2010/08/18

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  42. 25pWZ-8 Angle-resolved soft-X-ray emission spectroscopy of anisotropic structured material based on transmission electron microscopy III

    Terauchi Masami, Sato Yohei

    Meeting abstracts of the Physical Society of Japan　65　(2)　922-922　2010/08/18

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  43. 21aHS-9 Angle-resolved soft-X-ray emission spectroscopy of anisotropic structured material based on transmission electron microscopy II

    Terauchi Masami, Sato Yohei

    Meeting abstracts of the Physical Society of Japan　65　(1)　982-982　2010/03/01

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  44. 22pGR-8 High energy-resolution EELS study of the electronic structure of MgB_4 II

    Tsuchiya K., Sato Y., Terauchi M., Saito H., Takeda M.

    Meeting abstracts of the Physical Society of Japan　65　(1)　897-897　2010/03/01

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  45. 22pGR-13 Superconductivity in Li-doped α-Rhombohedral Boron

    Nagatochi T., Hyodo H., Soga K., Sato Y., Terauchi M., Esaka F., Kimura K.

    Meeting abstracts of the Physical Society of Japan　65　(1)　898-898　2010/03/01

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  46. 20pGS-2 High energy-resolution EELS study of excitonic effect of carbon nanotubes

    Sato Y., Terauchi M., Saito Y.

    Meeting abstracts of the Physical Society of Japan　65　(1)　857-857　2010/03/01

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  47. 26pYD-9 TEM-EELS study of electronic structure of Li doped α-r-boron

    Sato Y., Terauchi M., Hyodo H., Soga K., Kimura K.

    Meeting abstracts of the Physical Society of Japan　64　(2)　763-763　2009/08/18

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  48. 26pYD-11 High energy-resolution EELS study of the electronic structure of MgB_4

    Tsuchiya K., Sato Y., Terauchi M., Saito H., Takeda M.

    Meeting abstracts of the Physical Society of Japan　64　(2)　763-763　2009/08/18

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  49. 26aYK-9 TEM-EELS study of near infrared absorption materials

    Sato Y., Terauchi M., Adachi K.

    Meeting abstracts of the Physical Society of Japan　64　(2)　869-869　2009/08/18

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  50. 27pRE-7 Study of electric structure of hexagonal diamond using monochromator electron microscope

    Sato Y., Terauchi M., Yoshiasa A.

    Meeting abstracts of the Physical Society of Japan　64　(1)　939-939　2009/03/03

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  51. 30pYG-4 Production of high purity α-Rhombohedral Boron and Li-doping into it, targeting superconductivity

    Nagatochi T., Hyodo H., Soga K., Sato Y., Terauchi M., Kimura K.

    Meeting abstracts of the Physical Society of Japan　64　(1)　864-864　2009/03/03

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  52. 高分解能EELSを用いたLaB6微粒子の近赤外吸収の研究

    佐藤庸平, 寺内正己, 向井雅貴, 金山俊克, 足立健治

    まてりあ　48　(12)　634-634　2009

    Publisher: The Japan Institute of Metals and Materials

    DOI： 10.2320/materia.48.634 　

    ISSN： 1340-2625

  53. 21pWA-4 Derivation of dielectric function of LaB_6 by Kramers-Kronig analysis of EELS spectrum

    Sato Y., Terauchi M., Adachi K.

    Meeting abstracts of the Physical Society of Japan　63　(2)　880-880　2008/08/25

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  54. 26aYF-5 Radiative surface plasmon study of silicon nanowires by using TEM-EELS

    Sato Y., Terauchi M., Kikkawa J., Takeda S.

    Meeting abstracts of the Physical Society of Japan　63　(1)　951-951　2008/02/29

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  55. 22aTD-10 Surface effect study of valence electron excitation spectra of SiNW by using TEM-EELS

    Sato Y., Terauchi M., Kikkawa J., Takeda S.

    Meeting abstracts of the Physical Society of Japan　62　(2)　985-985　2007/08/21

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  56. 19aRG-2 Electrical properties of tetragonal boron nanobelts II

    Hyodo H., Kirihara K., Soga K., Kawaguchi K., Shimizu Y., Sasaki T., Koshizaki N., Sato Y., Terauchi M., Kimura K.

    Meeting abstracts of the Physical Society of Japan　62　(1)　822-822　2007/02/28

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  57. 25aYK-6 TEM-EELS/XES study of electronic structures of silicon nanowires

    Sato Y., Terauchi M., Kikkawa J., Takeda S.

    Meeting abstracts of the Physical Society of Japan　61　(2)　799-799　2006/08/18

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  58. 25aYB-6 Electronic structure study of Mg-doped boron nanobelts by EELS and XES

    Terauchi M., Sato Y., Kirihara K., Kawaguchi K., Sasaki T., Koshizaki N., Hyodo H., Kimura K.

    Meeting abstracts of the Physical Society of Japan　61　(2)　686-686　2006/08/18

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  59. 27pUF-4 TEM-EELS study of electric structure of carbon nanotube

    Sato Y., Terauchi M., Saito Y., Saito R.

    Meeting abstracts of the Physical Society of Japan　61　(1)　817-817　2006/03/04

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  60. 30aRC-4 TEM study of Mg-doped boron nanobelts

    Terauchi M., Sato Y., Kirihara K., Kawaguchi K., Sasaki T., Koshizaki N., Hyodo H., Kimura K.

    Meeting abstracts of the Physical Society of Japan　61　(1)　849-849　2006/03/04

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  61. 19aXA-6 TEM-EELS study of electric structure of double-walled carbon nanotubes

    Sato Y., Terauchi M., Saito Y., Saito R.

    Meeting abstracts of the Physical Society of Japan　60　(2)　673-673　2005/08/19

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  62. 19pYF-12 TEM-EELS study of electric structure of organic molecular encapsulated SWCNTs II

    Sato Y., Terauchi M., Takenobu T., Iwasa Y.

    Meeting abstracts of the Physical Society of Japan　60　(2)　685-685　2005/08/19

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  63. 20aYN-4 TEH-EEES analysis of valence electron excitation processes of silicon nanowires

    Kikkawa J., Takeda S., Sato Y., Terauchi M.

    Meeting abstracts of the Physical Society of Japan　60　(2)　810-810　2005/08/19

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  64. 24aYN-1 TEM-EELS study of electric structure of organic molecular encapsulated SWCNTs

    Sato Y., Terauchi M., Takenobu T., Iwasa Y.

    Meeting abstracts of the Physical Society of Japan　60　(1)　772-772　2005/03/04

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  65. 25aYK-4 Preperation and evalation of Mg-doped α-rhombohedral born

    Hyodo H, Araake S, Soga K, Sato Y, Terauchi M, Kimura K

    Meeting abstracts of the Physical Society of Japan　60　(1)　784-784　2005/03/04

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  66. 12pWF-5 TEM-EELS Study of Electric Structure of SWCNTs

    Sato Y., Terauchi M., Kataura H.

    Meeting abstracts of the Physical Society of Japan　59　(2)　738-738　2004/08/25

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  67. 28pWN-14 Properties of Mg-doped β-rhombohedral boron as an icosahedral cluster solid 2

    Araake S., Hyodo H., Soga K., Sato Y., Terauchi M., Kimura K.

    Meeting abstracts of the Physical Society of Japan　59　(1)　857-857　2004/03/03

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  68. 30aZP-10 TEM-EELS Study of Electric Structure of CNT

    Sato Y., Terauchi M., Saito R., Saito Y., Kataura H.

    Meeting abstracts of the Physical Society of Japan　59　(1)　873-873　2004/03/03

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  69. TEM-EELS Study of Electric Structure of DWCNT II

    Sato Y., Terauchi M., Saito Y.

    Meeting abstracts of the Physical Society of Japan　58　(2)　733-733　2003/08/15

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  70. TEM-EELS/XES Analysis of the Electric Structure of Boron Nanobelts II

    Sato Y., Terauchi M., Wang Z., Shimizu Y., Sasaki T., Kawaguchi K., Kimura K., Koshizaki N.

    Meeting abstracts of the Physical Society of Japan　58　(2)　750-750　2003/08/15

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  71. TEM-EELS Study of Electric Structure of DWCNT

    Sato Y., Terauchi M., Saito Y.

    Meeting abstracts of the Physical Society of Japan　58　(1)　817-817　2003/03/06

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  72. TEM-EELS study of the electronic structure of Mg-doped BornII

    SATO Y., TERAUCHI M., OGURI J., YAHATA H., SOGA K., KIMURA K.

    37　141-141　2002/11/27

    ISSN： 0417-0326

  73. TEM-EELS study of the electronic structure of Mg-doped Boron III

    Sato Y., Terauchi M., Oguri J., Yahata H., Soga K., Kimura K.

    Meeting abstracts of the Physical Society of Japan　57　(2)　692-692　2002/08/13

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

Show all ︎Show first 5

Books and Other Publications 1

  1. 次世代自動車の熱マネジメント

    佐藤庸平, 町田佳輔, 寺内正己

    技術情報協会　2020/12

Presentations 111

  1. Electron irradiation damage of amorphous epoxy resin at low electron doses Invited

    Kaname Yoshida, Hsin-Hui Huang, Tomohiro Miyata, Yohei Sato, Hiroshi Jinnai

    2025/06/10

  2. Chemical Characterization of Epoxy Resin Using STEM-EELS

    Hsin-Hui Huang, Tomohiro Miyata, Yohei Sato, Teruyasu Mizoguchi, Hiroshi Jinnai, Kaname Yoshida

    2025/06/09

  3. Angle-resolved SXES study of the chemical bonding state of Fe2B

    Y. Hada, Y. K. Sato, M. Terauchi

    2025/06/10

  4. Anisotropic soft X-ray emission of h-BN and its anisotropic chemical bonding

    M. Terauchi, Y. Hatakeyama, Y. K. Sato

    2025/06/10

  5. Cryo-EELS/EF-TEM Multi-Elemental Mapping of Biomaterials in Frozen Solvents

    Daisuke Unabara, Yohei Sato, Tasuku Hamaguchi, Koji Yonekura

    2025/06/10

  6. Quantitative Analysis of Anisotropic K-emission intensity from Graphite and h-BN

    Yudai Hatakeyama, Yohei K Sato, Masami Terauchi

    2025/06/10

  7. Elastic wave excitation on piezoelectric film by GHz pulsed electron beam

    Y. K. Sato, S. A. Reisbick, S. Jodai, D. Morikawa, K. Tsuda, M. Terauchi, Y. Zhu

    2025/06/10

  8. Quantitative Analysis of Anisotropic C-K Emission of Graphite

    Y. Hatakeyama, Y. K. Sato, M. Terauchi

    2025/03/19

  9. Elastic wave excitation on piezoelectric nano-film using GHz pulsed e-beam

    Y. K. Sato, K. Tsuda, S.A. Reisbick, D. Morikawa, M. Terauchi, Y. Zhu

    2025/03/19

  10. EELSの基礎と応用

    佐藤庸平

    分析電子顕微鏡討論会　2024/12/05

  11. 中性子照射HOPGの高圧高温処理による層状ナノダイヤモンドへの直接変換

    徳永匠, 肥後祐司, 佐藤庸平, 庭瀬敬右, 新部正人, 本多信一

    第85回応用物理学会秋季学術講演会　2024/09/20

  12. Formation of layered diamond from neutron-irradiated graphite under high pressure and high temperature

    K. Niwase, T. Tokunaga, Y. Higo, Y. Sato, M. Niibe, S. Honda

  13. 角度分解EELSによるα-AgGaO2の励起子サイズ評価

    斎藤興也, 佐藤庸平, 寺内正己, 小俣孝久, 鈴木一誓, 吉川純

    日本物理学会第79回年次大会　2024/09/17

  14. Elastic wave excitation study using GHz pulsed electron beam

    Y.K. Sato, K. Tsuda, S. Reisbick, D. Morikawa, M. Terauchi, Y. Zhy

    2024/09/17

  15. 角度分解SXESによるh-BNの結合異方性の研究

    寺内正己, 畠山雄大, 佐藤庸平

    日本物理学会第79回年次大会　2024/09/17

  16. 角度分解SXESによるFe2Bの電子構造の研究

    羽田有希, 佐藤庸平, 寺内正己

    日本物理学会第79回年次大会　2024/09/17

  17. Effects of amorphous structure inhomogeneity of nanoscale to microscale on photoinduced deformation of amorphous carbon nitride thin films

    Masami Aono, Hiroaki Kishimura, Kenji Komatsu, Yasuaki Yamamoto, Yohei Sato, Masami Terauchi

    34th International conference on Diamond and Carbon Materials

  18. Acoustic oscillations on piezoelectric materials excited by a GHz pulsed electron beam

    Yohei K. Sato, Kenji Tsuda, Spencer A. Reisbick, Daisuke Morikawa, Masami Terauchi, Yimei Zhu

    Microscopy and Microanalysis 2024　2024/07/30

  19. The evaluation of Exciton size by angle-resolved EELS and the role of exciton size in photocatalytic function

    Tomoya Saito, Yohei K Sato, Masami Terauchi, Issei Suzuki, Takahisa Omata, Jun Kikkawa

    Enhanced Data Generated by ELectrons (EDGE) 2024　2024/06/09

  20. Compositional Analysis at the Interface between Surface Modified Si Substrate/Epoxy Resin Adhesion using STEM-EELS

    Yohei Sato, Tomohiro Miyata, Yoshiaki Kawagoe, Kaname Yoshida, Hsin-Hui Huang, Tomonaga Okabe, Masashi Mizukami, Katsumi Hagita, Teruyasu Mizoguchi, Hiroshi Jinnai

    2024/06/06

  21. Precise Quantitative Analysis of Graphite Anisotropic C-K Emission

    Y. Hatakeyama, Y. Sato, M. Terauchi

    2024/06/04

  22. Chemical state analysis at interface of Si/Epoxy studied by STEM-EELS

    Y. K. Sato, T. Miyata, Y. Kawagoe, K. Yoshida, H. -H. Huang, T. Okabe, M. Mizukami, K. Hagita, T. Mizoguchi, K. Jinnai

    2024/06/03

  23. Electronic Structure of Solar Energy Conversion Material β-CuGaO2 studied by qEELS

    Y. Ohsawa, Y. K. Sato, M. Terauchi, I. Suzuki, T. Omata

    2024/06/03

  24. 角度分解SXESによる金属ドープLuAlB4の電子構造の研究

    羽田優希, 中根正勝, 佐藤庸平, 寺内正己, 神津薫, 岡田繁

    日本物理学会2024年春季大会　2024/03/20

  25. q分解EELSを用いたβ-CuGaO2の電子構造解析の研究II

    大澤優太, 斎藤興也, 佐藤庸平, 寺内正己, 鈴木一誓, 小俣孝久

    日本物理学会2024年春季大会　2024/03/20

  26. 角度分解EELSによるβ-AgGaO2の励起子サイズ評価

    斎藤興也, 佐藤庸平, 寺内正己, 小俣孝久, 鈴木一誓, 吉川純

    日本物理学会2024年春季大会　2024/03/20

  27. Availability of self-absorption effect in electron-beam induced SXES experiment

    Masami Terauchi, Yohei Sato

    2024/03/20

  28. Compressed Graphite generated from neutron-irradiated Graphite and the analysis by TEM-EELS

  29. Synthesis of compressed graphite by high-pressure and high-temperature treatments of neutron-irradiated highly oriented pyrolytic graphite and characterization of its structural and electronic properties

    Takashi Kitazume, Takumi Tokunaga, Yuji Higo, Yohei Sato, Keisuke Niwase, Masato Niibe, Shin-ichi Honda

    Annual Meeting of the Japan Society of Vacuum and Surface Science 2023

  30. Direct observations of solute clusters in dilute Mg alloys based on electron microscopy and X-ray fluorescence holography

    Daisuke Egusa, Koji Kimura, Yohei Sato, Hidetoshi Miyazaki, Mitsuhiro Itakura, Koichi Hayashi, Eiji Abe

    International conference on complex orders in condensed matter

  31. アモルファス窒化炭素薄膜における膜厚方向の化学結合状態均一性が光誘起変形に及ぼす影響

    青野祐美, 島 宏貴, 小松啓志, 佐藤庸平, 寺内正己

    第84回応用物理学会秋季学術講演会

  32. 角度分解SXESによるLu(Al0.995Mo0.005)B4の電子構造の研究

    羽田優希, 佐藤庸平, 寺内正己, 神津薫, 岡田繁

    日本物理学会第78回年次大会　2023/09/16

  33. 電子線励起SXESにおける吸収効果の利用

    寺内正己, 佐藤庸平

    日本物理学会第78回年次大会

  34. Electronic structure of β-CuGaO2 studied by qEELS

    Yuta Ohsawa, Tomoya Saito, Yohei K. Sato, Masami Terauchi, Issei Suzuki, Takahisa Omata

  35. Angle-resolved SXES study on anisotropic electronic structure of NaAlSi

    Yohei K. Sato, Ryogo Ebisu, Masami Terauchi, Takahiro Yamada

    International microscopy congress 20th　2023/09/13

  36. Momentum resolved STEM-EELS analysis of the solute clusters in dilute Mg-Zn-Y alloy

    Yohei K. Sato, Daisuke Egusa, Hidetoshi Miyazaki, Koji Kimura, Mitsuhiro Itakura, Masami Terauchi, Eiji Abe

    International microscopy congress 20th　2023/09/12

  37. Exchange-correlation effects of carrier electrons in LaB6 studied by AR-EELS

    Yohei Sato, Masami Terauchi

    International microscopy congress 20th　2023/09/11

  38. Compressed graphite and its electronic structure investigated by TEM-EELS

    Keisuke Niwase, Yuta Ohsawa, Yohei K. Sato, Tomoya Saito, Masami Terauchi, Takashi Kitazume, Takumi Tokunaga, Yuji Higo, Masahito Niibe, Shin-ich Honda

    33rd International Conference on Diamond and Carbon Materials

  39. Electronic structure of Zn-Y clusters in Mg-Zn-Y alloys studied by STEM-EELS

    Yohei K. Sato, Daisuke Egusa, Hidetoshi Miyazaki, Koji Kimura, Mitsuhiro Itakura, Masami Terauchi, Eiji Abe

    Thermec 2023　2023/07/06

  40. TEM-EELSを用いた圧縮グラファイトの電子構造の研究

    大澤優太, 佐藤庸平, 斎藤興也, 寺内正己, 北詰崇, 徳永匠, 藤井俊治郎, 肥後祐司, 庭瀬敬右, 新部正人, 本多信一

    日本顕微鏡学会第79回学術講演会　2023/06/26

  41. 角度分解EELSによる励起子サイズ評価の研究

    斎藤興也, 佐藤庸平, 寺内正己

    日本顕微鏡学会第79回学術講演会　2023/06/26

  42. 角度分解SXES測定によるNaAlSiの異方的電子構造の研究

    佐藤庸平, 戎凌吾, 寺内正己, 山田高広

    日本顕微鏡学会第79回学術講演会　2023/06/26

  43. 顕微SXESによる光変形アモルファス窒化カーボン膜内の電子状態の研究

    寺内正己, 佐藤庸平, 山本康裕, 青野祐美

    日本物理学会2023年秋期大会　2023/03/22

  44. Plasmon dispersion of LPSO type Mg alloys studied by q resolved EELS

    Y. K. Sato, T. Saito, M. Terauchi, D. Egusa, E. Abe

    2023/03/22

  45. 顕微SXESにおける角度分解測定手法の開発III

    戎凌吾, 佐藤庸平, 山田高広, 寺内正己

    日本物理学会2023年春季大会　2023/03/22

  46. Synthesis of Mg-B compound by flux method and their electronic structures studied by microscopic SXES

    Y. Hada, T. Saito, Y. K. Sato, M. Terauchi, H. Ikeda, D. Saito, M. Baba, M. Takeda

    2023/03/22

  47. The study for evaluating exciton size by angle-resolved EELS

    T. Saito, Y. K. Sato, M. Terauchi

    2023/03/22

  48. フラックス法によるMg-B化合物の合成と顕微SXESによる電子構造の研究

    羽田有希, 斎藤興也, 佐藤庸平, 寺内正己, 池田颯, 齊藤大貴, 馬場奨亮, 武田雅敏

    日本ホウ素・ホウ化物研究会　2023/02/11

  49. Direct observation of pseudo-gap electronic structure in the Mg-Zn-Y alloys studied by hard X-ray photoelectron spectroscopy

    Hidetoshi Miyazaki, Tatsuyoshi Akatsuka, Koji Kimura, Daisuke Egusa, Yohei Sato, Mituhiro Itakura, Toko Tokunaga, Kouichi Hayashi, Koji Hagihara, Eiji Abe

    LPSO/MFS2022　2022/12/11

  50. Electronic structure of Mg-Zn-Y cluster in dilute Mg alloys studied by STEM-EELS

    Yohei K. Sato, Daisuke Egusa, Hidetoshi Miyazaki, Koji Kimura, Mitsuhiro Itakura, Masami Terauchi, Eiji Abe

    The 5th International Symposium on Long-Period Stacking/Order Structure and Miile-feuille Structure (LPSO/MFS2022)　2022/12/14

  51. Compositional Changes at Epoxy-resin/inorganic Interfaces Revealed by 1-nm resolution Electron Spectroscopy

    Tomohiro Miyata, Yohei Sato, Kaname Yoshida, Hsin-Hui Huang, Teruyasu, Mizoguchi, Katsumi Hagita, Masashi Mizukami, Hiroshi Jinnai

    2022 MRS Fall Meeting & Exhibit　2022/11/27

  52. STEM-EELS study of electronic structure of Mg-Zn-Y alloys

    Y. K. Sato, D. Egusa, K. Kimura, H. Miyazaki, M. Itakura, M. Terauchi, E. Abe

    2022/09/21

  53. Structure of Solute Clusters in Dilute Mg-Zn-Y Alloy Revealed by X-ray Fluorescence Holography

    Koji Kimura, Daisuke Egusa, Hidetoshi Miyazaki, Yohei Sato, Koji Hagihara, Tomohiro Matsushita, Hiroo Tajiri, Kouichi Hayashi, Eiji Abe

    International Workshop on Exploration of Atomistic Disorder in Long-Range Ordered Systems and of Order in Disordered Materials　2022/09/19

  54. 顕微SXESにおける角度分解測定手法の開発II

    戎凌吾, 佐藤庸平, 山田高広, 寺内正己

    日本物理学会2022年度秋期大会　2022/09/14

  55. Anisotropic plasmon of Mg-Zn-Y alloys studied by angle-resolved EELS

    T. Saito, Y. K. Sato, M. Terauchi, D. Egusa, E. Abe

    2022/09/14

  56. Evaluation of electron exchange-correlation potential using qEELS

    Y. K. Sato, M. Terauchi

    2022/09/14

  57. 放射光による中性子照射された黒鉛の高圧高温下での構造変化のその場観察

    庭瀬敬右, 中村航, 北詰崇, 藤井俊治郎, 本多信一, 新部正人, 寺澤倫孝, 肥後祐司, 佐藤庸平

    日本物理学会第77回年次大会

  58. Cmpositional Analysis on Epoxy-resin/Inorganic Interfaces using Scanning Transmission Electron Microscopy

    Tomohiro Miyata, Yohei Sato, Kaname Yoshida, Hsin-Hui Huang, Teruyasu Mizoguchi, Katsumi Hagita, Masashi Mizukami, Hiroshi Jinnai

    Microscopy and Microanalysis 2022　2022/07/31

  59. Local structural analysis of mille-feuille structure Mg99.2Zn0.2Y0.6 alloy using x-ray fluorescence holography

    Koji KIMURA, Daisuke EGUSA, Eiji ABE, Hidetoshi MIYAZAKI, Yohei SATO, Mitsuhiro ITAKURA, Koji HAGIHARA, Yuta YAMAMOTO, Artoni K.R. ANG, Naohisa HAPPO, Tomohiro MATSUSHITA, Kouichi HAYASHI

    2022/05/22

  60. Electronic structures of Mg-Zn-Y alloys studied by electron spectroscopies

    2022/05/11

  61. AR-EELSを用いたLaB6キャリア電子の電子交換相関効果の研究

    佐藤庸平, 寺内正己

    日本顕微鏡学会第78回学術講演会　2022/05/11

  62. EELS study of anisotropic electronic structure of Mg-Zn-Y alloys

    2022/03/16

  63. Multi-scale MD Simulations of Extremely Slow Cooperative Diffusion of Epoxy Resin Molecules at Naturally Oxidized Si Substrates

    K. Hagita, T. Miyata, Y. Sato, H. Jinnai

    MRM2021 Materials Research Meeting　2021/12/13

  64. Chemical bonding states of silica filled rubber with silane coupling agent studied by STEM-EELS

    Yohei K. Sato, Wakana Miyoshi, Hiroshi Jinnai

    MRM2021 Materials Research Meeting　2021/12/13

  65. 電子エネルギー損失分光法による材料誘電特性 Invited

    佐藤庸平

    日本顕微鏡学会 学際的顕微研究領域 若手研究部会　2021/11/17

  66. 中性子照射された高配向性熱分解グラファイトの高温高圧下での構造変化に関するその場X線回折観察

    中村航, 中村周作, 藤井俊治郎, 本多信一, 新部正人, 寺澤倫孝, 肥後祐司, 庭瀬敬右, 佐藤庸平

    放射線プロセスシンポジウム　2021/11/16

  67. Development of heat aging resistant polyamide composite

    2021/11/10

  68. 中性子照射した高配向性熱分解グラファイトの高圧・高温下における構造変化のその場X線回折

    中村航, 中村周作, 藤井俊治郎, 本多信一, 新部正人, 寺澤倫孝, 肥後裕司, 庭瀬敬右, 佐藤庸平

    2021年表面真空学会 学術講演会　2021/11/05

  69. 3d遷移金属L発光スペクトルからの吸収効果の抽出II

    寺内正己, 佐藤庸平, 横山隆臣, 村野孝訓

    日本物理学会2021年秋季大会　2021/09/23

  70. 角度分解EELSによるアナターゼ型TiO2中励起子の実空間分布評価

    斎藤興也, 佐藤庸平, 寺内正己

    日本物理学会2021年秋季大会　2021/09/23

  71. AR-EELS study of exchange correlation effects of carrier electrons in LaB6

    Yohei K. Sato, Masami Terauchi

    2021/09/23

  72. Visualization of chemical bonding in a silica-filled rubber nanocomposite using STEM-EELS

    Y. K. Sato, W. Miyoshi, H. Jinnai

    EUROMAT2021　2021/09/14

  73. SXES analysis of amorphous carbon related thin films with photo-induced deformation

    M. Shimono, Y. K. Sato, M. Terauchi, M. Aono

    2021

  74. 軟X線発光分光法による鉄系熱安定剤含有ポリアミド材料の熱劣化挙動の解析

    奥村知世, 小野尚志, 佐藤幸司, 石山裕輝, 三枝俊亮, 佐藤庸平, 寺内正己

    第70回高分子討論会

  75. Extraction of absorption effect from L-emission spectra of 3d transition metal elements

    M. Terauchi, R. Ebisu, Y. K. Sato, T. D. Yokoyama, T. Murano

    2021/06/14

  76. Fe-L emission spectra obtained by a new HR-SXES instrument

    M. Terauchi, R. Ebisu, Y. K. Sato, M. Koike

    2021/06/14

  77. Dielectric property of a heat shielding material studied by angle resolved EELS Invited

    Yohei K. Sato, Keisuke Machida, Masami Terauchi, Kenji Adachi

    2021/06/15

  78. STEM-EELSを用いたシリカゴム複合材料の化学結合状態の実空間分布測定

    佐藤庸平, 三好和加奈, 陣内浩司

    MRMフォーラム2020　2020/12/08

  79. Materials Analysis by using Electron Microscopes operated in IMRAM Invited

    M. Terauchi, H. Jinnai, Y.K. Sato, D. Morikawa, K. Tsuda, Z. Akase

    ONLINE JOINT SYMPOSIUM Engineer a Better Tomorrow　2020/11/30

  80. 角度分解EELSによるTiO2電子構造の研究

    山本剛史, 佐藤庸平, 寺内正己

    日本顕微鏡学会第63回シンポジウム　2020/11/20

  81. Imaging of p/n-type regions in a bulk CaB6 specimen by soft X-ray emission spectroscopy

    M. Terauchi, Y. K. Sato, M. Takeda

    Tohoku-Melbourne online WS　2020/11/09

  82. L-emission spectra of 3d transition metal oxides by a HR-SXES instrument

    M. Terauchi, R. Ebisu, Y. K. Sato

    2020/09/09

  83. Dielectric response of Rb tungsten oxides studied by momentum-transfer-resolved EELS

    K. Machida, K. Adachi, Y. K. Sato, M. Terauchi

    2020/09/09

  84. Electronic Structure of TiO2 studied by AR-EELS

    T. Yamamoto, Y. K. Sato, M. Terauchi

    2020/09/09

  85. Band structure analysis of LaB6 by AR-EELS

    Y. K. Sato, T. Saito, M. Terauchi

    2020/09/09

  86. Electronic structure of N doped graphite studied by SXES

    K. Matsuura, Y. Sato, M. Terauchi, S. Hashimoto, S. Ogawa, Y. Takakuwa

    2020

  87. Dielectric properties of TiO2 crystals studied by q-EELS

    Y. Sato, T. Yamamoto, M. Terauchi

    2020

  88. q-EELS study on electronic structure of TiO2

    Y. Sato, T. Yamamoto, M. Terauchi

    2020/03/17

  89. Anisotropic Dielectric Properties of Cs-doped Tungsten Oxide Nanoparticles Studied by Electron Energy-Loss Spectroscopy

    K. Machida, K. Adachi, Y. Sato, M. Terauchi

    2019 MRS Fall Meeting and Exhibit　2019/12/02

  90. Anisotropic Electronic Structure of Metal Borides Studied by Soft X-ray Emission Spectroscopy

    T. Ito, Y. Sato, M. Terauchi

    2019/11/29

  91. Electronic Structure of Nigtogen-Doped Graphite Films Studied by Soft X-ray Emission Spectroscopy

    K. Matsuura, Y. Sato, M. Terauchi, M. Aono, S. Hashimoto, S. Ogawa, Y. Takakuwa

    2019/11/29

  92. Electronic structure of MgB4 studied by EELS and SXES International-presentation

    Y. Sato, T. Saito, K. Tsuchiya, M. Terauchi, H. Saito, M. Takeda

    20th International Symposium on Boron, Borides and Related Materials　2019/09/22

  93. Carrier plasmon of LaB6 studied by momentum transfer resolved EELS International-presentation

    Y. Sato, J. Kamoi, M. Terauchi

    20th International Symposium on Boron, Borides and Related Materials　2019/09/22

  94. Photoinduced Deformation of Amorphous Carbon Thin Films

    M. Aono, K. Suzuki, N. Kitazawa, Y. Sato, M. Terauchi

    2019/09/18

  95. SXES study of thermoelectric bulk materials of MB6 (M=Ca, Sr)

    M. Terauchi, Y. Sato, M. Takeda

    2019/09/17

  96. Measurement of anisotropic dielectric property of Cs tungsten oxide nanoparticles

    Keisuke Machida, Kenji Adachi, Yohei Sato, Masami Terauchi

  97. Electronic Structure of MgB4 studied by electron beam spectroscopies

    Y. Sato, T. Saito, K. Tsuchiya, M. Terauchi, H. Saito, M. Takeda

    2019/09/12

  98. 軟X線発光分光による窒素ドープ黒鉛薄膜の電子状態に関する研究

    寺内正己, 松浦航人, 佐藤庸平, 橋本晋, 小川修一, 高桑雄二

    日本物理学会秋季大会　2019/09/10

  99. EELSを用いた誘電特性解析 Invited

    佐藤庸平

    第35回分析電子顕微鏡討論会　2019/09/03

  100. qEELSを用いたシリコンクラスレート化合物のキャリア特性の研究

    佐藤庸平, 岩下哲士, 寺内正己, 森戸春彦, 山根久典

    日本顕微鏡学会第75回学術講演会　2019/06/17

  101. タイヤゴム中シリカ粒子のSTEM-EELS解析 Invited

    佐藤庸平, 桑内康文, 三好和加奈, 陣内浩司

    日本顕微鏡学会第75回学術講演会　2019/06/17

  102. 運動量移送分解EELSによる機能性材料中のキャリア電子特性の研究

    佐藤庸平, 岩下哲士, 寺内正己, 森戸春彦, 山根久典, 町田佳輔, 足立健治

    日本金属学会春季講演大会　2019/03/20

  103. EELSを用いたSiクラスレート化合物の電子構造の研究

    岩下哲士, 佐藤庸平, 寺内正己, 森戸春彦, 山根久典

    日本顕微鏡学会関東支部講演会　2019/03/16

  104. qEELSを用いたルチル・アナターゼの電子構造の研究

    佐藤庸平, 寺内正己

    日本物理学会第74回年次大会　2019/03/15

  105. 軟X線発光分光および高輝度赤外光を用いたアモルファス窒化炭素薄膜の化学結合状態評価

    青野祐美, 岸村浩明, 北沢信章, 石井信吾, 佐藤庸平, 寺内正己

    第66回応用物理学会春季学術講演会　2019/03/09

  106. q-EELSによるSiクラスレート化合物の電子構造の研究

    岩下哲士, 佐藤庸平, 寺内正己, 森戸春彦, 山根久典

    日本物理学会2018年秋季大会　2018/09/12

  107. Momentum transfer resolved EELS study of anisotropic carrier plasmon in Cs0.33WO3 International-presentation

    Yohei Sato, Masami Terauchi, Kenji Adachi

    19th International Microscopy Congress　2018/09/09

  108. EELSを用いた材料誘電特性解析 Invited

    佐藤庸平

    第34回分析電子顕微鏡討論会　2018/09/04

  109. qEELSを用いたLaB6キャリアープラズモンの研究

    佐藤庸平, 鴨居潤一, 寺内正己

    日本顕微鏡学会第74回学術講演会　2018/05/29

  110. qEELS study for electronic structure of carrier doped WO3 materials

    Y. Sato, M. Terauchi, K. Adachi

    2018/03/22

  111. qEELSを用いたLaB6キャリアープラズモンの研究

    鴨居潤一, 佐藤庸平, 寺内正己

    顕微鏡学会関東支部講演会　2018/03/10

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Research Projects 11

  1. GHzパルス電子ナノプローブを用いた弾性波局所共鳴励起分析法の開発

    佐藤 庸平

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 基盤研究(C)

    Institution: 東北大学

    2025/04 - 2028/03

  2. Innovation of drug discovery through visualization of structures beyond atomic coordinates

    Kenji TSUDA, Yohei SATO, Daisuke MORIKAWA, Liu Tianyu

    Offer Organization: Japan Science and Technology Agency (JST)

    System: JST-MIRAI program

    Category: "Common Platform Technology, Facilities, and Equipment" mission area: Full-scale R&D Project

    Institution: Tohoku University

    2023/04 - 2028/03

  3. アモルファス炭素系薄膜の三次元構造不均一性と光誘起変形

    青野 祐美, 島 宏美, 寺内 正己, 佐藤 庸平

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業 基盤研究(A)

    Category: 基盤研究(A)

    Institution: 鹿児島大学

    2022/04 - 2027/03

  4. 高温領域における構造相転移のその場観察技術の開発と中性子照射HOPGへの適用

    本多 信一, 新部 正人, 肥後 祐司, 庭瀬 敬右, 佐藤 庸平

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 基盤研究(C)

    Institution: 兵庫県立大学

    2023/04/01 - 2026/03/31

  5. ナノ電子プローブ分光法によるミルフィーユ型Mg合金の電子構造の解明

    佐藤 庸平

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業 新学術領域研究(研究領域提案型)

    Category: 新学術領域研究(研究領域提案型)

    Institution: 東北大学

    2021/04 - 2023/03

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    遷移金属元素と希土類元素を微量添加したMg合金は、特異な力学特性を示し次世代軽金属材料として注目されている。ZnとＹを高濃度に添加したＭｇ合金では、硬質層内部でZn6Y8クラスターの形成が確認されている。一方、微量添加Ｍｇ合金では、硬質層がまばらに分布した内部でクラスターの形成は確認されていなかった。本研究課題では、電子エネルギー損失分光法(EELS)を用いて硬質層の電子構造解析を行い、STEM像観察、蛍光X線ホログラフィー、光電子分光測定の結果と合わせて、硬質層中の原子配置を明らかにすることを目的としている。 ナノ電子プローブを用いてMg99.2Zn0.2Y0.6の硬質層のみからZn-L2,3吸収端およびY-L2,3吸収端の測定を行い、Zn/Yの存在比を評価したところ、Zn6Y8クラスターを有するMg75Zn10Y15に比べてZnが減少していることが明らかになった。この結果は光電子分光による評価と一致した。この組成比評価と、蛍光Ｘ線ホログラフィーおよびSTEM像解析の結果を統合すると、Mg3Zn3Y8クラスターの形成が予想された。硬質層中に予想したクラスターが存在するならば、非弾性散乱電子の散乱角度方向によってEELSスペクトルに異方性が現れることが考えられるため、原子分解能での角度分解EELS測定を行った。その結果、Y-L3吸収端のY-4d軌道に対応するピーク構造が、非弾性散乱電子の散乱角度方向（q//ab面方向とq//c軸方向）においてスペクトルのピーク幅に違いが観測され、異方性を確認することに成功した。この異方性の観測により、Mg合金中の硬質層中では予想したMg3Zn3Y8クラスターの形成が妥当であることが結論づけられた。

  6. 中性子照射高配向性熱分解黒鉛の圧縮黒鉛への相転移カイネティクス解明とナノ物性評価

    本多 信一, 肥後 祐司, 庭瀬 敬右, 佐藤 庸平

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業 基盤研究(C)

    Category: 基盤研究(C)

    Institution: 兵庫県立大学

    2020/04 - 2023/03

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    高圧高温下における中性子照射高配向性熱分解黒鉛（HOPG）に含まれる欠陥が圧縮黒鉛の形成に及ぼす影響について明らかにするために、その場XRD法を用いて、中性子照射HOPGのGraphite(002)(G(002))面のピークに着目し、14.4GPa の高圧下での昇温過程（最大1010℃）における構造変化の解析を行った。比較のために、未照射HOPGも同一の高圧高温セルに入れて実験を行った。室温におけるその場XRDスペクトルのG(002)ピークに対して形状解析を行った結果、中性子照射HOPGではG(002)ピークを2成分で、一方未照射HOPGでは1成分で表すことができることが分かった。中性子照射試料で得られた2成分の内、格子定数の大きいものは、格子面間隔の増加を引き起こす格子間原子等の面間欠陥に起因するもの、また格子定数小さいものは、面内の乱れを引き起こす転位双極子等の面内欠陥に起因するものと考えられる。さらに、高圧下での昇温に伴うその場XRDスペクトルのG(002)ピークに対して形状解析を行った結果、照射試料では室温から約600℃までは2成分、それよりも高温では1成分、一方未照射試料では1成分でフィッティングできることが分かった。照射試料でフィッティング成分が減少することは、照射に伴う構造の乱れの高圧高温下での回復を示唆するものと考えている。 一方で、高圧下において2000℃を超える高い温度領域で、ヒーターや熱電対等の損傷がない安定した実験の実施に向けて、新たに高圧高温セルの設計・製作に取り組んだ。試料を保温性の高い材料で取り囲むように工夫してセルを作製することで、15GPa、2300℃の高圧高温状態を安定して達成することに成功した。

  7. Electron excitation of heat shielding material studied by momentum transfer resolved EELS

    Sato Yohei

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Young Scientists (B)

    Institution: Tohoku University

    2017/04/01 - 2020/03/31

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    Cs-doped hexagonal WO3 (CWO) is used as a solar heat-shielding material for windows, in which plasma oscillation due to carrier electrons (carrier plasmon) plays an important role for near infrared scattering. Despite the hexagonal crystal structure of CWO, the anisotropic properties of the carrier plasmons have not been investigated. This study reports the momentum transfer resolved electron energy-loss spectroscopic measurements of CWO to investigate the anisotropic properties of carrier plasmons. <BR> The experimental results clarified that the two plasma oscillation modes at 1.2 and 1.8 eV have different excitation properties in CWO. One plasma oscillation at 1.2 eV was oscillation mode along the ab plane with a large damping effect. Another mode at 1.8 eV was an oscillation along the c-axis with a small damping effect. These anisotropic plasmon modes led to an accurate understanding of the heat-shielding mechanism.

  8. Optical Properties Evaluation of Individual Nano Phosphors and Investigation of Relationship with Particle Structure using Transmission Electron Microscope

    Uehara Masato

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: National Institute of Advanced Industrial Science and Technology

    2014/04 - 2017/03

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    In this study, we tried to evaluate the individual particles directly using the transmission electron microscope with respect to the structure and optical properties of multilayered fluorescent nanoparticles. We succeeded in demonstrating that the optical properties of individual particles can be directly evaluated by electron energy loss spectroscopy using a monochromator. We found that the crystallinity of the nano region can be discussed by this approach, and the crystallinity of the shell layer is reflected in the fluorescence efficiency.

  9. TEM-EELSによる機能性金属間化合物の機能評価法の研究 Competitive

    佐藤庸平

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業 若手研究（B）

    2013/04 - 2014/03

  10. A study on the generation of new carbon materials by piling up non-equilibrium conditions with defects

    NIWASE Keisuke, ATOU Toshiyuki, NAGAI Yasuyoshi, SATOU Youhei, TACHIBANA Masaru

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)

    Category: Grant-in-Aid for Scientific Research (C)

    Institution: Hyogo University of Teacher Education

    2011 - 2013

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    Previously, we have discovered transformation from neutron-irradiated highly oriented pyrolytic graphite (HOPG) to amorphous diamond under shock compression. Here, we show the band gap energy of amorphous diamond is estimated to be 4 eV, which is similar to the value reported for the amorphous diamond synthesized from C60 fullerene by shock compression. In addition, we utilized HOPG foils irradiated with a neutron dose of about a half of the previous study, and found the transformation to the amorphous diamond. Also, we reported the synthesis of transparent graphitic tiles from carbon nanowalls by shock compression. It was suggested that the transparent tile is a mixture of amorphous diamond and superhard graphitic material.

  11. Electron-beam analyses of crystal- and electronic-structures

    TERAUCHI Masami, TSUDA Kenji, OGATA Yoichiro, SATO Yohei

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research on Priority Areas

    Institution: Tohoku University

    2007 - 2011

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    Base on transmission electron microscopy technique, high-quality specimen areas were examined by using CBED, EELS and SXES methods. Characteristic electronic states of boron nano-belt, zeolite-templated carbon, polymerized C_<60>, Li-doped α-rhombohedral boron and MgB_4 were revealed. Improvements of anisotropic valence charge density analyses by CBED and SXES, and optical properties of nano-partucles by EELS were also done.

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