Faculty Profiles - MUTO, Shunsuke

Papers - MUTO, Shunsuke

Division display 61 - 80 of about 245 ／ All the affair displays >>

Measurement of nanoscale local stress distribution in phase-separated glass using scanning transmission electron microscopy-cathodoluminescence

Yamada Taiki, Ohtsuka Masahiro, Takahashi Yoshimasa, Yoshino Haruhiko, Amma Shin-ichi, Muto Shunsuke

MATERIALIA Vol. 9 2020.3

Methods for Calibration of Specimen Temperature During In Situ Transmission Electron Microscopy Experiments

Gaulandris Fabrizio, Simonsen Soren B, Wagner Jakob B, Molhave Kristian, Muto Shun, Kuhn Luise T

MICROSCOPY AND MICROANALYSIS Vol. 26 ( 1 ) page： 3 - 17 2020.2

STEM-EELS analysis of the interface structures of composite ASS-LIB electrodes fabricated via aerosol deposition

Yamamoto Yuta, Iriyama Yasutoshi, Muto Shunsuke

JOURNAL OF THE AMERICAN CERAMIC SOCIETY Vol. 103 ( 2 ) page： 1454 - 1462 2020.2

Single-pass STEM-EMCD on a zone axis using a patterned aperture: progress in experimental and data treatment methods

Thersleff Thomas, Schonstrom Linus, Tai Cheuk-Wai, Adam Roman, Burgler, Daniel E, Schneider Claus M, Muto Shunsuke, Rusz Jan

SCIENTIFIC REPORTS Vol. 9 2019.12

Interfacial oxygen vacancies yielding long-lived holes in hematite mesocrystal-based photoanodes International journal

Zhang Zhujun, Karimata Izuru, Nagashima Hiroki, Muto Shunsuke, Ohara Koji, Sugimoto Kunihisa, Tachikawa Takashi

NATURE COMMUNICATIONS Vol. 10 ( 1 ) page： 4832 - 4832 2019.10

Language：Japanese Publishing type：Research paper (scientific journal)

Hematite (α-Fe2O3) is one of the most promising candidates as a photoanode materials for solar water splitting. Owing to the difficulty in suppressing the significant charge recombination, however, the photoelectrochemical (PEC) conversion efficiency of hematite is still far below the theoretical limit. Here we report thick hematite films (∼1500 nm) constructed by highly ordered and intimately attached hematite mesocrystals (MCs) for highly efficient PEC water oxidation. Due to the formation of abundant interfacial oxygen vacancies yielding a high carrier density of ∼1020 cm-3 and the resulting extremely large proportion of depletion regions with short depletion widths (<10 nm) in hierarchical structures, charge separation and collection efficiencies could be markedly improved. Moreover, it was found that long-lived charges are generated via excitation by shorter wavelength light (below ∼500 nm), thus enabling long-range hole transfer through the MC network to drive high efficiency of light-to-energy conversion under back illumination.

DOI： 10.1038/s41467-019-12581-z

Web of Science

PubMed

Non-negative Matrix Factorization and Its Extensions for Spectral Image Data Analysis

Shiga Motoki, Muto Shunsuke

E-JOURNAL OF SURFACE SCIENCE AND NANOTECHNOLOGY Vol. 17 page： 148 - 154 2019.9

Environmental high-voltage S/TEM combined with a quadrupole mass spectrometer for concurrent in situ structural characterization and detection of product gas molecules associated with chemical reactions Reviewed

S. Muto, S. Arai, T. Higuchi, K. Orita, S. Ohta, H. Tanaka, T. Suganuma, M. Ibe, H. Hirata

Microscopy Vol. 68 ( 2 ) page： 185 - 188 2019.4

Proposal for Measuring Magnetism with Patterned Apertures in a Transmission Electron Microscope Reviewed

S. Muto, S. Arai, T. Higuchi, K. Orita, S. Ohta, H. Tanaka, T. Suganuma, M. Ibe, H. Hirata

PHYSICAL REVIEW LETTERS Vol. 122 ( 3 ) page： 037201 2019.1

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：AMER PHYSICAL SOC

We propose a magnetic measurement method utilizing a patterned postsample aperture in a transmission electron microscope. While utilizing electron magnetic circular dichroism, the method circumvents previous needs to shape the electron probe to an electron vortex beam or astigmatic beam. The method can be implemented in standard scanning transmission electron microscopes by replacing the spectrometer entrance aperture with a specially shaped aperture, hereafter called a ventilator aperture. The proposed setup is expected to work across the whole range of beam sizes-from wide parallel beams down to atomic resolution magnetic spectrum imaging.

DOI： 10.1103/PhysRevLett.122.037201

Web of Science

Analysis of evolution of electron-radiation-induced defects in white-luminescent, carbonized,mesoporous silica nanocomposite using transmission electron microscopy/cathodoluminescence Reviewed

K. Oguni, K. Sato, Y. Ishii, Y. Ishikawa, S. Kawasaki, A. Vasin, S. Muto

Nuclear Inst. And Methods in Physics Research B Vol. 439 page： 22 - 33 2019.1

Language：English Publishing type：Research paper (scientific journal) Publisher：ELSEVIER

We examined the evolution of electron-radiation-induced defects in a white-luminescent, carbonized, mesoporous silica nanocomposite using cathodoluminescence (CL) and electron energy-loss spectroscopy associated with scanning transmission electron microscopy, in order to elucidate the microscopic origins of light emissions in the visible spectral range. The effects of electron irradiation on CL were analyzed based on the differential equations for kinetics of irradiation defects. The nanometric honeycomb silica framework was found to play essentially no role in the electron-excited light emission processes, in contrast to the case for photon-excited processes. The broad and continuous visible emission band in CL consisted of several luminescence components, that have been assigned to optically active point defects such as oxygen-deficient centers, and surface non-bridging oxygen hole centers (NBOHCs) in silica glass.

DOI： 10.1016/j.nimb.2018.11.007

Web of Science

Twinned/untwinned catalytic gold nanoparticles identified by applying a convolutional neural network to their Hough transformed Z-contrast images Reviewed

Y. Yamamoto, M. Hattori, J. Ohyama, A. Satsuma, N. Tanaka, S. Muto

Microscopy Vol. 67 ( 6 ) page： 321 - 330 2018.12

MC3T3-E1 Cellular Response and Protein Detection on Surface Potential-Controlled TiO2 Scale in Serum-Containing Medium Reviewed

M. Hashimoto, T. Ogawa, S. Kitaoka, S. Muto, M. Furuya, H. Kanetaka, M. Abe, H. Yamashita

Key Engineering Materials Vol. 782 page： 218-223 2018.10

Cation mixing in LiNi0.8Co0.15Al0.05O2 positive electrode material studied using high angular resolution electron channeling X-ray spectroscopy Reviewed

Yamamoto Yu, Ohtsuka Masahiro, Azuma Yosuke, Takahashi Teruo, Muto Shunsuke

JOURNAL OF POWER SOURCES Vol. 401 page： 263 - 270 2018.10

Progress in nanoinformatics and informational materials science Invited Reviewed

Seko Atsuto, Toyoura Kazuaki, Muto Shunsuke, Mizoguchi Teruyasu, Broderick Scott

MRS BULLETIN Vol. 43 ( 9 ) page： 690 - 695 2018.9

Evaluation of delamination strength of bonded micro-components: a nano-indenter technique combined with environmental microscopy

Takahashi Yoshimasa, Kishimoto Kaname, Higuchi Kimitaka, Yamamoto Yuta, Arai Shigeo, Muto Shunsuke

2018 INTERNATIONAL SYMPOSIUM ON MICRO-NANOMECHATRONICS AND HUMAN SCIENCE (MHS) page： . 2018

A microscopy method for scanning transmission electron microscopy imaging of the antibacterial activity of polymeric nanoparticles on a biofilm with an ionic liquid

Chisato Takahashi, Shunsuke Muto, Hiromitsu Yamamoto

JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART B-APPLIED BIOMATERIALS Vol. 105 ( 6 ) page： 1432 - 1437 2017.8

Language：English Publishing type：Research paper (scientific journal) Publisher：WILEY

In this study, we developed a scanning transmission electron microscopy (STEM) method for imaging the antibacterial activity of organic polymeric nanoparticles (NPs) toward biofilms formed by Staphylococcus epidermidis bacterial cells, for optimizing NPs to treat biofilm infections. The combination of sample preparation method using a hydrophilic ionic liquid (IL) and STEM observation using the cooling holder eliminates the need for specialized equipment and techniques for biological sample preparation. The annular dark-field STEM results indicated that the two types of biodegradable poly-(DL-lactide-co-glycolide) (PLGA) NPs: PLGA modified with chitosan (CS), and clarithromycin (CAM)loaded+CS-modified PLGA, prepared by emulsion solvent diffusion exhibited different antibacterial activities in nanoscale. To confirm damage to the sample during STEM obser-vation, we observed the PLGA NPs and the biofilm treated with PLGA NPs by both the conventional method and the newly developed method. The optimized method allows microstructure of the biofilm treated with PLGA NPs to be maintained for 25 min at a current flow of 40 pA. The developed simple sample preparation method would be helpful to understand the interaction of drugs with target materials. In addition, this technique could contribute to the visualization of other deformable composite materials at the nanoscale level. (C) 2016 Wiley Periodicals, Inc.

DOI： 10.1002/jbm.b.33680

Web of Science

Towards sub-nanometer real-space observation of spin and orbital magnetism at the Fe/MgO interface Reviewed

T. Thersleff, S. Muto, M. Werwinski, J. Spiegelberg, Y. Kvashnin, B. Hjorvarsson, O. Eriksson, J. Rusz, K. Leifer

SCIENTIFIC REPORTS Vol. 7 page： 44802 2017

Unmixing hyperspectral data by using signal subspace sampling Reviewed

J. Spiegelberg, S. Muto, M. Ohtsuka, K. Pelckmans, J. Rusz

Ultramicroscopy Vol. 182 page： 205-211 2017

Microscopic origin of ultra-low friction coefficient between the wear track formed on carbon nitride coating and transfer layer on sliding ball in friction tests under dry N2 Reviewed

H. Inoue, S. Muto, S. Arai, H. Wasada, N. Umehara

Surface &Coating Technology Vol. 313 page： 31-39 2017

Control of HAp Formation and Osteoconductivity on Nitrogen-Doped TiO2 Scale Formed by Oxynitridation of Ti Reviewed

M. Hashimoto, S. Kitaoka, Y. Obata, S. Muto, T. Ogawa, M. Furuya, H. Kanetaka

Key Engineering Materials Vol. 758 page： 86-89 2017

High-precision quantitative atomic-site-analysis of functional dopants in crystalline materials by electron-channelling-enhanced microanalysis Reviewed

S. Muto, M. Ohtsuka

Progress in Crystal Growth and Characterization of Materials Vol. 63 page： 40-61 2017

　 PREV - NEXT 　

<MUTO, Shunsuke>

Papers - MUTO, Shunsuke