Faculty Profiles - 松山　智至

Papers - 松山　智至

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Development of an abrasive-free polishing method for optical material using pure water and Ni catalyst

Daisetsu Toh, Ryosuke Ohnishi, Pho V. Bui, Ai Isohsahi, Satoshi Matsuyama, Yasuhisa Sano, Kazuto Yamauchi

Proceedings - 34th ASPE Annual Meeting page： 474 - 477 2019

Publishing type：Research paper (international conference proceedings)

The removal rate using a Ni catalyst was higher than that using a Pt catalyst. However, it decreased with the processing time because the Ni surface was easily oxidized. Therefore, we proposed the electrochemical method to keep the Ni surface active. By repeating Ni plating and dissolution cycle, we stabilized the removal rate for at least 8 h and created an atomically flat surface on a SiO2 surface.

Scopus

Numerically controlled plasma chemical vaporization machining using array-type electrode toward high-throughput deterministic machining

Ken Nishida, Shinya Okayama, Satoshi Matsuyama, Kazuto Yamauchi, Yasuhisa Sano

Proceedings - 34th ASPE Annual Meeting page： 466 - 469 2019

Development of adaptive Kirkpatrick-Baez mirrors based on mechanical and piezoelectric bending

H. Nakamori, T. Goto, S. Matsuyama, H. Hayashi, H. Yamaguchi, J. Sonoyama, K. Akiyama, Y. Sano, Y, Kohmura, M. Yabashi, T. Ishikawa, H. Okada, K. Yamauchi

2018.8

Reflective Imaging Optics using Concave and Convex Mirrors for A Compact and Achromatic Full-field X-ray Microscope Invited Reviewed

J. Yamada, S. Matsuyama, K. Hata, R. Hirose, Y. Takeda, Y. Kohmura, M. Yabashi, K. Omote, T. Ishikawa, K. Yamauchi

Microscopy and Microanalysis Vol. 24 ( S2 ) page： 274 - 275 2018.8

High-resolution full-field X-ray microscope for 20-keV X-rays with multilayer imaging mirrors Reviewed

S. Matsuyama

Microscopy and Microanalysis Vol. 24 ( S2 ) page： 284 - 285 2018.8

Development of new diagnostics based on LiF detector for pump-probe experiments Reviewed

T.A. Pikuz, A.Ya.Faenov, N. Ozaki, T. Matsuoka, B. Albertazzi, N. Hartley, K. Miyanishi, K. Katagiri, S. Matsuyama, K. Yamauchi, H. Habara, Y. Inubushi, T. Togashi, H. Yumoto, H. Ohashi, Y. Tange, T. Yabuuchi, M. Yabashi, A. Grum-Grzhimailo, A. Casner, I. Skobelev, S. Makarov, S. Pikuz, G. Rigon, M. Koenig, K.A. Tanaka, T. Ishikawa, R. Kodama

2018.7

Nearly diffraction-limited hard X-ray line focusing with hybrid adaptive X-ray mirror based on mechanical and piezo-driven deformation Reviewed

Takumi Goto, Satoshi Matsuyama, Hiroki Hayashi, Hiroyuki Yamaguchi, Junki Sonoyama, Kazuteru Akiyama, Hiroki Nakamori, Yasuhisa Sano, Yoshiki Kohmura, Makina Yabashi, Tetsuya Ishikawa, Kazuto Yamauchi

Optics Express Vol. 26 ( 13 ) page： 17477 - 17486 2018.6

Language：English Publishing type：Research paper (scientific journal) Publisher：OSA - The Optical Society

We have developed the new hybrid adaptive X-ray mirror based on mechanical and piezo-driven deformation to realize precise shape controllability on a long-length mirror. The mechanical bender approximately provides the required ellipse, while the piezoelectric actuators attached to the mirror correct very small residual errors to satisfy the diffraction-limited condition. The mechanical bender significantly reduces the role of the piezoelectric actuator, resulting in the suppression of accuracy degradation due to the drift and/or junction effect of the piezoelectric actuators. In addition, line focusing was demonstrated with two different numerical apertures at SPring-8, and the obtained beam sizes were 127 and 253 nm (FWHM), which agree well with the diffraction-limited sizes.

DOI： 10.1364/OE.26.017477

Scopus

PubMed

Development of a multilayer Kirkpatrick-Baez mirror optics for X-ray free electron laser

T. Inoue, S. Matsuyama, S. Kawai, H. Yumoto, Y. Inubushi, T. Koyama, K. Tono, T. Osaka, H. Ohashi, M. Yabashi, T. Ishikawa, K. Yamauchi

International Conference on Synchrotron Radiation Instrumentation (SRI 2018) 2018.6

Hard-x-ray imaging mirror optics using concave and convex mirrors Invited

J. Yamada, S. Matsuyama, Y. Sano, Y. Kohmura, M. Yabashi, T. Ishikawa, K. Yamauchi

International Conference on Synchrotron Radiation Instrumentation (SRI 2018) 2018.6

Full‐field imaging and focusing with advanced mirror‐based optics Invited

S. Matsuyama

International Conference on Synchrotron Radiation Instrumentation (SRI 2018) 2018.6

Fabrication of ultraprecise multilayer focusing mirrors using an X-ray grating interferometer and differential deposition technique

T. Inoue, S. Matsuyama, S. Kawai, H. Yumoto, Y. Inubushi, T. Koyama, K. Tono, T. Osaka, H. Ohashi, M. Yabashi, T. Ishikawa, K. Yamauchi

International Workshop on X-ray Optics and Metrology Satellite Meeting of SRI 2018 (IWXM 2018) 2018.6

Development of reflective imaging optics using concave and convex mirrors

J. Yamada, S. Matsuyama, Y. Sano, Y. Kohmura, M. Yabashi, T. Ishikawa, K. Yamauchi

International Workshop on X-ray Optics and Metrology Satellite Meeting of SRI 2018 (IWXM 2018) 2018.6

Development of hybrid X-ray adaptive optical system based on piezo-driven deformable mirror and a mechanical mirror bender

H. Yamaguchi, T. Goto, H. Hayashi, S. Matsuyama, J. Sonoyama, K. Akiyama, H. Nakamori, Y. Sano, Y. Kohmura, M. Yabashi, T. Ishikawa, K. Yamauchi

International Conference on Synchrotron Radiation Instrumentation (SRI 2018) 2018.6

Development of adaptive Kirkpatrick-Baez mirrors based on bimorph and mechanical bending

H. Nakamori, T. Goto, S. Matsuyama, H. Hayashi, H. Yamaguchi, J. Sonoyama, K. Akiyama, Y. Sano, Y. Kohmura, M. Yabashi, T. Ishikawa, H. Okada, K. Yamauchi

International Workshop on X-ray Optics and Metrology Satellite Meeting of SRI 2018 (IWXM 2018) 2018.6

Platinum-catalyzed hydrolysis etching of SiC in water: A density functional theory study Reviewed

Pho Van Bui, Daisetsu Toh, Ai Isohashi, Satoshi Matsuyama, Kouji Inagaki, Yasuhisa Sano, Kazuto Yamauchi, Yoshitada Morikawa

JAPANESE JOURNAL OF APPLIED PHYSICS Vol. 57 ( 5 ) page： 055703-1 - 055703-5 2018.5

Language：English Publishing type：Research paper (scientific journal) Publisher：IOP PUBLISHING LTD

A comprehensive study of the physicochemical interactions and the reaction mechanism of SiC etching with water by Pt catalysts can reveal key details about the surface treatment and catalytic phenomena at interfaces. Therefore, density functional theory simulations were performed to study the kinetics of Pt-assisted water dissociation and breaking of a Si-C bond compared to the HF-assisted mechanism. These calculations carefully considered the elastic and chemical interaction energies at the Pt-SiC interface, activation barriers of Si-C bond dissociation, and the catalytic role of Pt. It was found that the Pt-catalyzed etching of SiC in water is initiated via hydrolysis reactions that break the topmost Si-C bonds. The activation barrier strongly depends on the elastic and chemical interactions. However, chemical interactions are a dominant factor and mainly contribute to the lowering of the activation barrier, resulting in an increased rate of reaction. (C) 2018 The Japan Society of Applied Physics

DOI： 10.7567/JJAP.57.055703

Web of Science

Systematic-error-free wavefront measurement using an X-ray single-grating interferometer Reviewed

Takato Inoue, Satoshi Matsuyama, Shogo Kawai, Hirokatsu Yumoto, Yuichi Inubushi, Taito Osaka, Ichiro Inoue, Takahisa Koyama, Kensuke Tono, Haruhiko Ohashi, Makina Yabashi, Tetsuya Ishikawa, Kazuto Yamauchi

Review of Scientific Instruments Vol. 89 ( 4 ) page： 043106-1 - 043106-7 2018.4

Language：English Publishing type：Research paper (scientific journal) Publisher：American Institute of Physics Inc.

In this study, the systematic errors of an X-ray single-grating interferometer based on the Talbot effect were investigated in detail. Non-negligible systematic errors induced by an X-ray camera were identified and a method to eliminate the systematic error was proposed. Systematic-error-free measurements of the wavefront error produced by multilayer focusing mirrors with large numerical apertures were demonstrated at the SPring-8 Angstrom Compact free electron LAser. Consequently, wavefront aberration obtained with two different cameras was found to be consistent with an accuracy better than λ/12.

DOI： 10.1063/1.5026440

Scopus

PubMed

Compact and large-magnification full-field X-ray microscope using concave-convex imaging mirrors

J. Yamada, S. Matsuyama, Y. Sano, Y. Kohmura, M. Yabashi, T. Ishikawa, K. Yamauchi

International Conference on X-ray Optics and Applications 2018 (XOPT2018) 2018.4

Development of nanofocusing system for X-ray free electron Laser (Study of nanobeam characterization)

T. Inoue, S. Matsuyama, S. Kawai, H. Yumoto, Y. Inubushi, T. Koyama, K. Tono, T. Osaka, H. Ohashi, M. Yabashi, T. Ishikawa, K. Yamauchi

International Conference on X-ray Optics and Applications 2018 (XOPT2018) 2018.4

Development of high-resolution X-ray imaging optical system using multilayer imaging mirrors

K. Hata, J. Yamada, S. Matsuyama, Y. Sano, Y. Kohmura, M. Yabashi, T. Ishikawa, K. Yamauchi

International Conference on X-ray Optics and Applications 2018 (XOPT2018) 2018.4

Performance of a hard X-ray split-and-delay optical system with a wavefront division Reviewed

Takashi Hirano, Taito Osaka, Yuki Morioka, Yasuhisa Sano, Yuichi Inubushi, Tadashi Togashi, Ichiro Inoue, Satoshi Matsuyama, Kensuke Tono, Aymeric Robert, Jerome B. Hastings, Kazuto Yamauchi, Makina Yabashi

Journal of Synchrotron Radiation Vol. 25 ( 1 ) page： 20 - 25 2018.1

Language：English Publishing type：Research paper (international conference proceedings) Publisher：International Union of Crystallography

The performance of a hard X-ray split-and-delay optical (SDO) system with a wavefront division scheme was investigated at the hard X-ray free-electron laser facility SACLA. For the wavefront division, beam splitters made of edge-polished perfect Si(220) crystals were employed. We characterized the beam properties of the SDO system, and investigated its capabilities for beam manipulation and diagnostics. First, it was confirmed that shot-to-shot non-invasive diagnostics of pulse energies for both branches in the SDO system was feasible. Second, nearly ideal and identical focal profiles for both branches were obtained with a spot size of â1/41.5μm in full width at half-maximum. Third, a spatial overlap of the two focused beams with a sub-μm accuracy was achieved by fine tuning of the SDO system. Finally, a reliable tunability of the delay time between two pulses was confirmed. The time interval was measured with an X-ray streak camera by changing the path length of the variable-delay branch. Errors from the fitted line were evaluated to be as small as ±0.4ps over a time range of 60ps.The performance of a hard X-ray split-and-delay optical system with a wavefront division scheme has been investigated at SACLA.

DOI： 10.1107/S1600577517014023

Scopus

PubMed

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Papers - 松山　智至