Award type：Award from Japanese society, conference, symposium, etc.  Country：Japan

Award type：Honored in official journal of a scientific society, scientific journal  Country：Japan

Award type：Honored in official journal of a scientific society, scientific journal  Country：Japan

Country：Japan

Country：Japan

Country：Japan

Country：Japan

Country：Japan

Country：Japan

Country：Japan

Country：Japan

Country：Japan

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Site-specific configurations of Fe 3d electrons in a spinel ferrite were investigated by electron energy loss spectroscopy (EELS) under electron channeling conditions. Site-specific spectra were extracted by applying a multivariate curve resolution (MCR) technique to the data set. An electronic difference in the Fe sites caused by ligand field splitting of trivalent Fe was probed. This demonstrated the promise of site-specific valence and spin state analysis in spintronics applications of spinel ferrites.

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

We applied Pixon deconvolution as introduced in Part I to several practical, examples of low signal-to-noise ratio (SNR), electron energy-loss spectra with a goal toward restoring their fine spectral features and/or improving the energy resolution. We demonstrate that by directly fitting the two-dimensional spectral data recorded on the CCD; the method enables us to reveal fine spectral structures. Consequently, Pixon reconstruction extends the ability to probe electronic states in very spatially localized areas, a capability currently unique to our method.

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

It is difficult to analyze the local concentrations and chemical states of lithium in lithium-ion secondary battery electrodes by microanalysis techniques based on TEM because the core excitation spectra of transition metals invariably overlap with the absorption/emission spectra of Li-K. We propose a promising analysis method that enables the spatial distribution of lithium with different chemical states from the original phase in a LiNiO2-based positive electrode to be visualized. It employs a suite of spectrum imaging techniques including scanning transmission electron microscopy, electron energy-loss spectroscopy, and multivariate curve resolution. This method is successfully applied to a cross-sectioned positive electrode.

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

In the present study, we examined the effects of hydrogen on electron energy-loss and x-ray absorption spectra of the iron carbides. The experimentally obtained spectral changes were interpreted on the basis of first principles
calculations for a model structure of the Fe–C–H system. Finally, we demonstrate high spatial resolution imaging of hydrogen distributions in iron-carbon systems by an energy-filtering transmission electron microscopy technique, utilizing the present spectral changes associated with
hydrogen incorporation.

Authorship：Lead author   Language：Japanese  

本論文はエネルギー損失分光法（EELS）の優位性を生かし，ELNES，EXELFSを利用してとりわけ軽元素原子の複合欠陥やその結合状態の分析についての様々な応用例を紹介する．

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

We investigated the local atomic and electronic structures around the dopants Mg and Al in a LiNiO2-based cathode material by the combination analysis of their K shell electron energy loss near edge structures (ELNES) and x-ray absorption near edge structures (XANES), and first-principles calculations. The occupation sites of the dopants in initial and cycled samples were examined. On the basis of the atomic structures and chemical bonding states of the models whose theoretical spectra were most consistent with the experimental spectra, we discussed the effects of Al and Mg on Li diffusion and their roles in suppressing the degradation of battery properties.

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

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Authorship：Last author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

DOI： https://doi.org/10.1016/j.jmmm.2022.169522

DOI： 10.1021/acsaem.2c01212

Web of Science

Language：Japanese  

DOI： 10.1107/S1600576722003818

Web of Science

Language：Japanese  

DOI： 10.1038/s41467-022-28944-y

Web of Science

Language：Japanese  

DOI： 10.1021/acsaem.1c02512

Web of Science

Language：Japanese  

DOI： 10.1016/j.gca.2021.09.031

Web of Science

Language：Japanese  

DOI： 10.1016/j.apcata.2021.118334

Web of Science

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

DOI： 10.1111/jace.17764

DOI： 10.1111/jace.17764

Web of Science

Language：Japanese  

DOI： 10.3791/62015

DOI： 10.3791/62015

Web of Science

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

DOI： 10.1093/jmicro/dfz008

Web of Science

Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：Acta Materialia Inc  

The hydroxyapatite (HAp) formation ability and related surface potentials of rutile-type TiO2 scales formed on Ti are controlled by varying the Ti heat treatment conditions in a N2 atmosphere containing a trace amount of O2. The zeta potentials of the samples heated at 873 and 973 K for 1 h are large negative and positive values, respectively, where HAp formation on the surface is enhanced in both cases. Upon longer heat treatment at those temperatures, the HAp forming ability diminishes and the zeta potential becomes more neutral. Kelvin probe force microscopy indicates that, under dry conditions, the surface charges on the TiO2 scales formed at 873 and 973 K in 1 h are positive and negative, respectively, opposite to the signs of the zeta potentials measured under wet conditions. Scanning transmission electron microscopy, electron energy loss spectroscopy, and calculations of defect formation energies reveal that nitrogen atoms incorporated into TiO2 during scale formation produce the charged defects (NO)O −1 and (N2)O +2 for the scales formed in 1 h at 873 and 973 K, respectively. In the case of longer treatments, nitrogen-related defects presumably transform into more stable states, such as N2 gas, in voids, resulting in a neutral surface. The present findings lead to physical models of surface charge distributions that elucidate the relationship between nitrogen-related defects, charged surfaces, and HAp formation mechanisms.

DOI： 10.1016/j.actamat.2018.05.072

Web of Science

Scopus

Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：Wiley-VCH Verlag  

Initial porous silicon (por-Si), carbonized porous silicon (por-Si:C), and carbon-incorporated porous silicon oxide (por-SiO2:C) layers are studied by electron paramagnetic resonance (EPR) at T = 10–13 K. Scanning transmission electron microscopy and electron energy loss (EEL) spectroscopy show that por-Si:C and por-SiO2:C layers have a highly disordered structure with mixing sp2 and sp3 CC bonds. In the por-SiO2:C layers, the peak of the oxygen bonded to carbon in the form of hydroxyl groups is found in the EEL spectrum of the C K-edge region. Low-intensity signals of Lorentzian lineshape are detected in the EPR spectrum of por-Si, por-Si:C, por-SiO2:C layers. One of them is attributed to the Pb0 defect at the Si/SiO2 interface of nanocrystalline grain and the second to the silicon dangling bonds (SiDB) localized in nanocrystalline Si. The carbonization of por-Si layers and subsequent oxidation of por-Si:C gives rise to the appearance of additional EPR signals of high intensity at g = 2.0035(3) in por-Si:C and at g = 2.0030(3) in por-SiO2:C, which are assigned to carbon-related defects (CRD) and carbon clusters, correspondingly. It was found that predominant defect types in por-Si:C and por-SiO2:C layers are CRD and carbon clusters, respectively, while the spin concentration of Pb0 interface defects and SiDB is low.

DOI： 10.1002/pssb.201700559

Web of Science

Scopus

Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：Springer Netherlands  

The strength against fracture initiation from an interface free-edge of bonded copper (Cu) and silicon nitride (SiN) micro-components is studied. Quantitative fracture tests are conducted either in a vacuum environment or in a gaseous hydrogen (H2) environment. By using two kinds of specimens, Types I and II, having the same free-edge geometry (135∘/135∘) but different outer shape, the validity of the linear fracture mechanics criterion is critically evaluated. For specimens tested in vacuum, fracture initiation strength represented by the elastic stress intensity factor of the near-edge normal stress component is found to be the same irrespective of the specimen type, indicating that the fracture mechanics criterion holds. For specimens tested in H2 gas, the strength of both types is reduced and, interestingly, Type II strength shows greater reduction than Type I. In other words, the fracture mechanics criterion does not hold in H2 gas. Such a difference may be attributable to the difference of local plasticity in each specimen type.

DOI： 10.1007/s10704-018-0269-8

Web of Science

Scopus

Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：ELSEVIER SCIENCE BV  

This paper demonstrates how Signal Subspace Sampling (SSS) is an effective pre-processing step for Non-negative Matrix Factorization (NMF) or Vertex Component Analysis (VCA). The approach allows to uniquely extract non-negative source signals which are orthogonal in at least one observation channel, respectively. It is thus well suited for processing hyperspectral images from X-ray microscopy, or other emission spectroscopies, into its non-negative source components. The key idea is to resample the given data so as to satisfy better the necessity and sufficiency conditions for the subsequent NMF or VCA. Results obtained both on an artificial simulation study as well as based on experimental data from electronmicroscopy are reported. (C) 2017 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.ultramic.2017.07.009

Web of Science

Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：PERGAMON-ELSEVIER SCIENCE LTD  

Knowledge of the location and concentration of impurity atoms doped into a synthesized material is of great interest to investigate the effect of doping. This would usually be investigated using X-ray or neutron diffraction methods in combination with Rietveld analysis. However, this technique requires a large-scale facility such as a synchrotron radiation source and nuclear reactor, and can sometimes fail to produce the desired results, depending on the constituent elements and the crystallographic conditions that are being analysed. Thus, it would be preferable to use an element-selective spectroscopy technique that is applicable to any combination of elements. We have established a quantitative method to deduce the occupation sites and their occupancies, as well as the site-dependent chemical states of the doped elements, using a combination of transmission electron microscopy (TEM), energy-dispersive X-ray (EDX) spectroscopy, and electron energy-loss spectroscopy (EELS). The method is based on electron channelling phenomena where the symmetries of the Bloch waves excited in a crystal are dependent on the diffraction condition or incident beam direction with respect to the crystal axes. By rocking the incident electron beam with a fixed pivot point on the sample surface, a set of EDX/EELS spectra are obtained as a function of the beam direction. This is followed by a statistical treatment to extract the atom-site-dependent spectra, thereby quantitatively enabling the estimation of the site occupancies and chemical states of the dopants. This is an extension of the 'ALCHEMI' (Atom Location by Channelling Enhanced Microanalysis) method or 'HARECXS/HARECES' (High Angular Resolution Channelled X-ray/Electron Spectroscopy), and we further extended the method to be applicable to cases where the crystal of interest contains multiple inequivalent atomic sites for a particular element, applying the precise spectral predictions based on electron elastic/inelastic dynamical scattering theory. After introduction of conceptual aspects of the method, we describe the extension of the method together with the development of the theoretical calculation method. We then demonstrate several useful applications of the method, including luminescent, ferrite, and battery materials. We discuss the advantages and drawbacks of the present method, compared with those of the recently developed atomic column-by-column analysis using aberration-corrected scanning TEM and high-efficiency X-ray detectors. (C) 2017 Elsevier Ltd. All rights reserved

DOI： 10.1016/j.pcrysgrow.2017.02.001

Web of Science

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

Inelastic electron scattering is a consequence of mostly Coulomb interaction between electrons in the sample and electron beam and, as such, it is a nonlocal event. In atomic resolution experiments, it thus opens the following question: How far is the origin of the inelastic scattering signal that is observed when the electron beam is passing nearby an atomic column or plane? We analyze computationally the delocalization of the magnetic signal in electron magnetic circular dichroism (EMCD) experiments in the so-called three-beam orientation, allowing one to image individual atomic planes. We compare the classical EMCD setup using the double-difference procedure (DD-EMCD) to a recently introduced atomic plane resolution EMCD (APR-EMCD) geometry, assuming the same probe size. We observe a strong localization of the EMCD signal to the closest atomic plane, confirming the potential of EMCD to study an evolution of magnetic properties near surfaces or interfaces with atomic plane resolution. The localization of the EMCD signal is remarkably higher than the localization of the nonmagnetic component of the inelastic scattering cross section. We also analyze double-channeling effects and find them particularly strong for the DD-EMCD method, while for APR-EMCD they appear to be minor. The DD-EMCD signal, on the other hand, appears to be more robust with respect to sample thickness than that of the APR-EMCD.

DOI： 10.1103/PhysRevB.95.174412

Web of Science

Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：NATURE PUBLISHING GROUP  

While the performance of magnetic tunnel junctions based on metal/oxide interfaces is determined by hybridization, charge transfer, and magnetic properties at the interface, there are currently only limited experimental techniques with sufficient spatial resolution to directly observe these effects simultaneously in real-space. In this letter, we demonstrate an experimental method based on Electron Magnetic Circular Dichroism (EMCD) that will allow researchers to simultaneously map magnetic transitions and valency in real-space over interfacial cross-sections with sub-nanometer spatial resolution. We apply this method to an Fe/MgO bilayer system, observing a significant enhancement in the orbital to spin moment ratio that is strongly localized to the interfacial region. Through the use of first-principles calculations, multivariate statistical analysis, and Electron Energy-Loss Spectroscopy (EELS), we explore the extent to which this enhancement can be attributed to emergent magnetism due to structural confinement at the interface. We conclude that this method has the potential to directly visualize spin and orbital moments at buried interfaces in magnetic systems with unprecedented spatial resolution.

DOI： 10.1038/srep44802

Web of Science

Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：ELSEVIER SCIENCE SA  

Carbon nitride (CN) coatings have been found to exhibit an ultra-low friction coefficient (less than 0.01) after repeated sliding against a silicon nitride (Si3N4) ball in a dry nitrogen gas (N-2) atmosphere. However, the mechanism for this has not yet been fully elucidated with respect to analyzing changes in the space structure of CNN. In the present study, we examined the microscopic structural changes in the near-surface structural transition layers of the wear track in the CN, coating and the transfer layer of the Si3N4 ball, using scanning transmission electron microscopy and electron energy-loss spectroscopy. We investigated the nitrogen concentration, density, and curvature of fragmented graphitic planes in the structural transition layers of both the CN,, coating and the transfer layer of the Si3N4 ball by analyzing the plasmon peak and carbon K-edge. In addition, we theoretically examined the chemical bonding states of nitrogen doping in various model clusters using an ab initio molecular orbital method to clarify the role of nitrogen in the ultra -low friction behavior. The mechanism behind the ultra low friction behavior is explained by nano-graphitization of the fragmented carbon structure with optimal nitrogen concentration passivating the contacting counter surfaces of the coating and ball formed during sliding. (C) 2017 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.surfcoat.2017.01.048

Web of Science

Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：OXFORD UNIV PRESS  

Advancements in the field of renewable energy resources have led to a growing demand for the analysis of light elements at the nanometer scale. Detection of lithium is one of the key issues to be resolved for providing guiding principles for the synthesis of cathode active materials, and degradation analysis after repeated use of those materials. We have reviewed the different techniques currently used for the characterization of light elements such as high-resolution transmission electron microscopy, scanning transmission electron microscopy ( STEM) and electron energy-loss spectroscopy (EELS). In the present study, we have introduced a methodology to detect lithium in solid materials, particularly for cathode active materials used in lithium-ion battery. The chemical states of lithium were isolated and analyzed from the overlapping multiple spectral profiles, using a suite of STEM, EELS and hyperspectral image analysis. The method was successfully applied in the chemical state analyses of hetero-phases near the surface and grain boundary regions of the active material particles formed by chemical reactions between the electrolyte and the active materials.

DOI： 10.1093/jmicro/dfw038

Web of Science

Authorship：Last author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1038/s41428-023-00786-5

Web of Science

Authorship：Last author   Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1021/acs.jpcc.2c08419

Web of Science

Authorship：Last author   Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1021/acs.jpcc.2c08419

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

DOI： 10.1016/j.msea.2023.145287

Language：English  

DOI： https://pubs.acs.org/doi/10.1021/acsaem.2c01212

Authorship：Corresponding author   Language：Japanese  

本論文はエネルギー損失分光法（EELS）の優位性を生かし，ELNES，EXELFSを利用してとりわけ軽元素原子の複合欠陥やその結合状態の分析についての様々な応用例を紹介する．

DOI： https://doi.org/10.2320/materia.61.470

Authorship：Corresponding author   Language：Japanese  

本論文はエネルギー損失分光法（EELS）の優位性を生かし，ELNES，EXELFSを利用してとりわけ軽元素原子の複合欠陥やその結合状態の分析についての様々な応用例を紹介する．

DOI： https://doi.org/10.11410/kenbikyo.57.2_65

Authorship：Corresponding author   Language：Japanese  

本論文はエネルギー損失分光法（EELS）の優位性を生かし，ELNES，EXELFSを利用してとりわけ軽元素原子の複合欠陥やその結合状態の分析についての様々な応用例を紹介する．

DOI： https://doi.org/10.2320/materia.61.579

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

DOI： 10.1016/j.gca.2021.9.031

Authorship：Last author   Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.apcata.2021.118334

Authorship：Last author   Language：Japanese   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.msec.2020.111718

Web of Science

Authorship：Lead author   Language：Japanese  

本論文はエネルギー損失分光法（EELS）の優位性を生かし，ELNES，EXELFSを利用してとりわけ軽元素原子の複合欠陥やその結合状態の分析についての様々な応用例を紹介する．

Language：English   Publishing type：Research paper (scientific journal)   Publisher：AMER CHEMICAL SOC  

NASICON-type oxide Li1+xAlxTi2-x(PO4)(3)(LATP) is expected to be a promising solid electrolyte (SE) for all-solid-state batteries (ASSBs) owing to its high ion conductivity and chemical stability. However, its interface properties with electrodes on the atomic scale remain unclear, but it is crucial for rational control of the ASSBs performance. Herein, we focused on the LATP SE with x = 0.17 and investigated the electron and ion transfer behaviors at the interfaces with the Li metal negative electrode and the LiCoO2 (LCO) positive electrode via explicit interface models and density functional theory calculations. Ti reduction was found at the LATP/Li interface. For the LATP/LCO interface, the results indicated the Li-ion transfer from LCO to LATP upon contact until a certain electric double layer is formed under equilibrium, in which LCO is partially reduced. Co-Ti exchange was also found to be favorable where the Li ion moves with Co3+ to LATP. We also explored the possible interfacial processes during annealing by simulating the oxygen removal effect and found that oxygen vacancy can be more easily formed in the LCO at the interface. It implies that partial Li ions move back to LCO for the local charge neutrality. We also demonstrated higher Li chemical potential around the LATP/LCO interfaces, leading to the dynamical Li-ion depletion upon charging. The calculation results and the deduced mechanisms well explain the experimental results so far and provide insights into the interfacial electron and ion transfer upon contact, during annealing, and charging.

DOI： 10.1021/acsami.0c16463

Web of Science

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

DOI： 10.1021/acscatal.0c05104

Authorship：Lead author   Language：Japanese  

Authorship：Lead author,　Corresponding author   Language：Japanese   Publishing type：Research paper (scientific journal)  

DOI： 10.1093/jmicro/dfz036

Web of Science

Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

DOI： 10.1016/j.jlumin.2019.116926

Web of Science

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

DOI： 10.1016/j.mtla.2019.100578

Web of Science

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

DOI： 10.1017/S1431927619015344

Web of Science

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

DOI： 10.1111/jace.16813

Web of Science

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

DOI： 10.1038/s41598-019-53373-1

Web of Science

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

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

DOI： 10.1380/ejssnt.2019.148

Web of Science

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

DOI： 10.1093/jmicro/dfy141

Web of Science

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

Language：Japanese   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

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

DOI： 10.1093/jmicro/dfy036

Web of Science

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

DOI： 10.4028/www.scientific.net/KEM.782.218

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

DOI： 10.1016/j.jpowsour.2018.08.100

Web of Science

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

DOI： 10.1557/mrs.2018.206

Web of Science

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

Web of Science

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

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

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

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

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

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

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

DOI： 10.1149/07542.0123ecst

Web of Science

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

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

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

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

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

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

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

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.ultramic.2016.08.006

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

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

DOI： 10.1016/j.tsf.2016.08.014

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

DOI： 10.1002/jbm.b.33680.

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

DOI： doi:0.1093/jmicro/dfw008

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

DOI： Solid State Communications

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

DOI： DOI: 10.1557/jmr.2016.79

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

DOI： DOI:10.1093/jmicro/dfv373

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

DOI： 10.1007/s11340-015-0008-2

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

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

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

DOI： doi: 10.1063/1.4930811

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.jpowsour.2015.04.183

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

DOI： doi:10.1007/s11340-015-0008-2

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

DOI： DOI: 10.1557/jmr.2014.293

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

DOI： DOI: 10.1002/sia.5542

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

DOI： doi:10.1088/1742-6596/500/2/022007

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

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

DOI： DOI: 10.1002/chem.201

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

DOI： 10.1017/S143192761401349X

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

DOI： DOI:10.1088/1742-6596/522/1/

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

DOI： 10.1017/S1431927613013214

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

DOI： 10.1093/jmicro/dfs095

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

DOI： 10.1016/j.ultramic.2012.09.009

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.ultramic.2012.09.008

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

DOI： 10.1002/pssa.201100816

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.jpowsour.2012.01.071

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

DOI： 10.3390/ma5040566

Language：Japanese  

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

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

Authorship：Lead author   Language：Japanese  

Authorship：Lead author   Language：Japanese  

Authorship：Lead author   Language：Japanese  

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

DOI： 10.1002/adfm.201200985

Language：Japanese  

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Authorship：Lead author   Language：Japanese  

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

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

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

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

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

Language：Japanese  

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

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

DOI： 10.1029/2010JB008179

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Authorship：Lead author   Language：Japanese  

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

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

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Authorship：Lead author   Language：Japanese  

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

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

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

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

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

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

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

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

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

Authorship：Lead author   Language：Japanese  

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

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

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

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

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

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

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

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

Hydrogen loosely trapped between graphitic basal planes in hydrogenated nanostructured graphite was detected by the change in the relative intensity ratio of the π * and σ* peaks of the C K-edge in electron energy-loss spectroscopy (EELS). The experimental spectral change was explained by model calculations of intercalated hydrogen in graphitic sheets, using an ab initio molecular orbital (DV-X

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

Changes in hardness of several representative ceramics and semiconductors associated with ion irradiation were systematically studied using a combination of nanoindentation and finite element analysis. We established a new method for obtaining the precise hardness of the embedded damaged layer of ion-irradiated samples. The method was applied to silicon carbide,

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

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

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Authorship：Lead author   Language：Japanese   Publishing type：Research paper (scientific journal)  

Authorship：Lead author   Language：Japanese  

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Hydrogen trapping sites in hydrogenated nanostructured graphite (HNG) prepared by mechanical milling under hydrogen atmosphere were intensively studied with transmission electron microscopy (TEM) and electron energy-loss spectroscopy (EELS). Measurements of

Authorship：Lead author   Language：Japanese  

Authorship：Lead author   Language：Japanese  

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

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

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

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

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Authorship：Lead author   Language：English  

Language：English  

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

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Language：Japanese  

Language：English  

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

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

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

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

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

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

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

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

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

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

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

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

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Authorship：Lead author   Language：Japanese  

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

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

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Authorship：Lead author   Language：Japanese  

Authorship：Lead author   Language：Japanese   Publishing type：Research paper (scientific journal)  

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

We propose a new analysis method of the extended energy-loss fine structure (EXELFS), applying the multi-resolution analysis (MRA) in the wavelet transformation. We select the cardinal spline wavelet where the rank-4 cardinal spline function is used as a scaling function to construct the mother wavelet. In contrast with the conventional analysis method, the present method is efficient in filtering out the high-frequency noise and low-frequency components introduced by the numerical analysis process without distorting the original signal components, which promises quantitative analyses with less uncertainties.

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Authorship：Lead author   Language：English  

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

Authorship：Lead author   Language：English  

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

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

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

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Authorship：Lead author   Language：English  

Authorship：Lead author   Language：English  

Authorship：Lead author   Language：English  

Authorship：Lead author   Language：Japanese   Publishing type：Research paper (scientific journal)  

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Authorship：Lead author   Language：Japanese   Publishing type：Research paper (scientific journal)  

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Authorship：Lead author   Language：English  

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Authorship：Lead author   Language：English  

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Language：Japanese

Language：Japanese

Language：Japanese

Language：English

Language：English   Publishing type：Book review, literature introduction, etc.   Publisher：PERGAMON-ELSEVIER SCIENCE LTD  

Knowledge of the location and concentration of impurity atoms doped into a synthesized material is of great interest to investigate the effect of doping. This would usually be investigated using X-ray or neutron diffraction methods in combination with Rietveld analysis. However, this technique requires a large-scale facility such as a synchrotron radiation source and nuclear reactor, and can sometimes fail to produce the desired results, depending on the constituent elements and the crystallographic conditions that are being analysed. Thus, it would be preferable to use an element-selective spectroscopy technique that is applicable to any combination of elements. We have established a quantitative method to deduce the occupation sites and their occupancies, as well as the site-dependent chemical states of the doped elements, using a combination of transmission electron microscopy (TEM), energy-dispersive X-ray (EDX) spectroscopy, and electron energy-loss spectroscopy (EELS). The method is based on electron channelling phenomena where the symmetries of the Bloch waves excited in a crystal are dependent on the diffraction condition or incident beam direction with respect to the crystal axes. By rocking the incident electron beam with a fixed pivot point on the sample surface, a set of EDX/EELS spectra are obtained as a function of the beam direction. This is followed by a statistical treatment to extract the atom-site-dependent spectra, thereby quantitatively enabling the estimation of the site occupancies and chemical states of the dopants. This is an extension of the 'ALCHEMI' (Atom Location by Channelling Enhanced Microanalysis) method or 'HARECXS/HARECES' (High Angular Resolution Channelled X-ray/Electron Spectroscopy), and we further extended the method to be applicable to cases where the crystal of interest contains multiple inequivalent atomic sites for a particular element, applying the precise spectral predictions based on electron elastic/inelastic dynamical scattering theory. After introduction of conceptual aspects of the method, we describe the extension of the method together with the development of the theoretical calculation method. We then demonstrate several useful applications of the method, including luminescent, ferrite, and battery materials. We discuss the advantages and drawbacks of the present method, compared with those of the recently developed atomic column-by-column analysis using aberration-corrected scanning TEM and high-efficiency X-ray detectors. (C) 2017 Elsevier Ltd. All rights reserved

DOI： 10.1016/j.pcrysgrow.2017.02.001

Web of Science

Language：English   Publishing type：Rapid communication, short report, research note, etc. (scientific journal)   Publisher：AMER PHYSICAL SOC  

Inelastic electron scattering is a consequence of mostly Coulomb interaction between electrons in the sample and electron beam and, as such, it is a nonlocal event. In atomic resolution experiments, it thus opens the following question: How far is the origin of the inelastic scattering signal that is observed when the electron beam is passing nearby an atomic column or plane? We analyze computationally the delocalization of the magnetic signal in electron magnetic circular dichroism (EMCD) experiments in the so-called three-beam orientation, allowing one to image individual atomic planes. We compare the classical EMCD setup using the double-difference procedure (DD-EMCD) to a recently introduced atomic plane resolution EMCD (APR-EMCD) geometry, assuming the same probe size. We observe a strong localization of the EMCD signal to the closest atomic plane, confirming the potential of EMCD to study an evolution of magnetic properties near surfaces or interfaces with atomic plane resolution. The localization of the EMCD signal is remarkably higher than the localization of the nonmagnetic component of the inelastic scattering cross section. We also analyze double-channeling effects and find them particularly strong for the DD-EMCD method, while for APR-EMCD they appear to be minor. The DD-EMCD signal, on the other hand, appears to be more robust with respect to sample thickness than that of the APR-EMCD.

DOI： 10.1103/PhysRevB.95.174412

Web of Science

Language：English   Publishing type：Rapid communication, short report, research note, etc. (scientific journal)   Publisher：ELSEVIER SCIENCE SA  

Carbon nitride (CN) coatings have been found to exhibit an ultra-low friction coefficient (less than 0.01) after repeated sliding against a silicon nitride (Si3N4) ball in a dry nitrogen gas (N-2) atmosphere. However, the mechanism for this has not yet been fully elucidated with respect to analyzing changes in the space structure of CNN. In the present study, we examined the microscopic structural changes in the near-surface structural transition layers of the wear track in the CN, coating and the transfer layer of the Si3N4 ball, using scanning transmission electron microscopy and electron energy-loss spectroscopy. We investigated the nitrogen concentration, density, and curvature of fragmented graphitic planes in the structural transition layers of both the CN,, coating and the transfer layer of the Si3N4 ball by analyzing the plasmon peak and carbon K-edge. In addition, we theoretically examined the chemical bonding states of nitrogen doping in various model clusters using an ab initio molecular orbital method to clarify the role of nitrogen in the ultra -low friction behavior. The mechanism behind the ultra low friction behavior is explained by nano-graphitization of the fragmented carbon structure with optimal nitrogen concentration passivating the contacting counter surfaces of the coating and ball formed during sliding. (C) 2017 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.surfcoat.2017.01.048

Web of Science

Language：English   Publishing type：Rapid communication, short report, research note, etc. (scientific journal)   Publisher：NATURE PUBLISHING GROUP  

While the performance of magnetic tunnel junctions based on metal/oxide interfaces is determined by hybridization, charge transfer, and magnetic properties at the interface, there are currently only limited experimental techniques with sufficient spatial resolution to directly observe these effects simultaneously in real-space. In this letter, we demonstrate an experimental method based on Electron Magnetic Circular Dichroism (EMCD) that will allow researchers to simultaneously map magnetic transitions and valency in real-space over interfacial cross-sections with sub-nanometer spatial resolution. We apply this method to an Fe/MgO bilayer system, observing a significant enhancement in the orbital to spin moment ratio that is strongly localized to the interfacial region. Through the use of first-principles calculations, multivariate statistical analysis, and Electron Energy-Loss Spectroscopy (EELS), we explore the extent to which this enhancement can be attributed to emergent magnetism due to structural confinement at the interface. We conclude that this method has the potential to directly visualize spin and orbital moments at buried interfaces in magnetic systems with unprecedented spatial resolution.

DOI： 10.1038/srep44802

Web of Science

Authorship：Lead author,　Corresponding author   Language：English   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)   Publisher：OXFORD UNIV PRESS  

Advancements in the field of renewable energy resources have led to a growing demand for the analysis of light elements at the nanometer scale. Detection of lithium is one of the key issues to be resolved for providing guiding principles for the synthesis of cathode active materials, and degradation analysis after repeated use of those materials. We have reviewed the different techniques currently used for the characterization of light elements such as high-resolution transmission electron microscopy, scanning transmission electron microscopy ( STEM) and electron energy-loss spectroscopy (EELS). In the present study, we have introduced a methodology to detect lithium in solid materials, particularly for cathode active materials used in lithium-ion battery. The chemical states of lithium were isolated and analyzed from the overlapping multiple spectral profiles, using a suite of STEM, EELS and hyperspectral image analysis. The method was successfully applied in the chemical state analyses of hetero-phases near the surface and grain boundary regions of the active material particles formed by chemical reactions between the electrolyte and the active materials.

DOI： 10.1093/jmicro/dfw038

Web of Science

Language：English   Publishing type：Rapid communication, short report, research note, etc. (scientific journal)  

Language：English   Publishing type：Rapid communication, short report, research note, etc. (scientific journal)  

Language：English   Publishing type：Rapid communication, short report, research note, etc. (scientific journal)  

Language：English   Publishing type：Rapid communication, short report, research note, etc. (scientific journal)  

Language：English   Publishing type：Rapid communication, short report, research note, etc. (scientific journal)  

Language：English   Publishing type：Rapid communication, short report, research note, etc. (scientific journal)  

Language：English   Publishing type：Rapid communication, short report, research note, etc. (scientific journal)  

Event date： 2019.6

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：名古屋国際会議場   Country：Japan  

Event date： 2019.3

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：物質・材料研究機構   Country：Japan  

Event date： 2019.2

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：品川シーズンテラスカンファレンス   Country：Japan  

Event date： 2018.10

Language：English   Presentation type：Oral presentation (invited, special)  

Venue：CHENGDU XIYUE HOTEL, Chengdu, China   Country：China  

Event date： 2018.10

Language：English   Presentation type：Oral presentation (invited, special)  

Venue：Sendai International Center, Japan   Country：Japan  

Event date： 2018.9

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：名古屋工業大学   Country：Japan  

Event date： 2018.6

Language：English   Presentation type：Oral presentation (invited, special)  

Venue：Finnstown Castle Hotel, Dublin, Ireland   Country：Ireland  

Event date： 2018.2

Language：Japanese   Presentation type：Oral presentation (keynote)  

Venue：マホロバ・マインズ三浦   Country：Japan  

Event date： 2018.2

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：東京理科大学森戸記念館   Country：Japan  

Event date： 2018.1

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：北海道大学   Country：Japan  

Event date： 2017.11

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：名古屋大学VBLホール   Country：Japan  

Event date： 2017.11

Language：English   Presentation type：Oral presentation (invited, special)  

Venue：BEXCO in Busan, Korea   Country：Korea, Republic of  

Event date： 2017.10

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：タワーホール船堀   Country：Japan  

Event date： 2017.9

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：幕張メッセ国際会議場   Country：Japan  

Event date： 2017.6

Language：English   Presentation type：Oral presentation (invited, special)  

Venue：S. Muto   Country：Sweden  

Event date： 2017.5

Language：English   Presentation type：Oral presentation (invited, special)  

Venue：Miyako Messe, Kyoto   Country：Japan  

Event date： 2017.4

Language：English   Presentation type：Oral presentation (invited, special)  

Venue：Phonix Convention Center and Sheraton Grand Phoenix   Country：United States  

Event date： 2017.3

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：物質・材料研究機構   Country：Japan  

Event date： 2017.2

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：㈱ニチイ学館神戸ポートアイランドセンター   Country：Japan  

Event date： 2017.1

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：物質・材料研究機構   Country：Japan  

Event date： 2016.9

Language：Japanese   Presentation type：Oral presentation (keynote)  

Venue：大阪大学豊中キャンパス   Country：Japan  

Event date： 2016.6

Language：English   Presentation type：Oral presentation (invited, special)  

Country：Japan  

Event date： 2016.1

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：東京大学伊藤国際学術研究センター   Country：Japan  

Event date： 2015.11 - 2015.12

Language：English   Presentation type：Oral presentation (invited, special)  

Country：Malaysia  

Event date： 2015.10

Language：English   Presentation type：Oral presentation (invited, special)  

Country：Japan  

Event date： 2015.7

Language：English   Presentation type：Oral presentation (invited, special)  

Country：Japan  

Event date： 2015.5

Language：English   Presentation type：Oral presentation (invited, special)  

Country：Sweden  

Event date： 2015.4

Language：English   Presentation type：Oral presentation (invited, special)  

Country：Croatia  

Event date： 2015.4

Language：English   Presentation type：Oral presentation (invited, special)  

Venue：the Hotel Adriana   Country：Croatia  

Event date： 2015.3

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：名古屋大学環境総合館レクチャーホール   Country：Japan  

Event date： 2014.11

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：グランドティアラ名古屋駅前   Country：Japan  

Event date： 2014.9

Language：Japanese   Presentation type：Oral presentation (keynote)  

Venue：名古屋大学東山キャンパス   Country：Japan  

Event date： 2014.9

Language：English   Presentation type：Oral presentation (invited, special)  

Venue：ストックホルム大学   Country：Sweden  

Event date： 2014.9

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：幕張メッセ国際会議場   Country：Japan  

Event date： 2014.8

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：時之栖   Country：Japan  

Event date： 2014.5

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：幕張メッセ国際会議場   Country：Japan  

Event date： 2014.4

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Country：Japan  

Event date： 2013.9

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：同志社大学京田辺キャンパス   Country：Japan  

Event date： 2013.7

Language：English   Presentation type：Oral presentation (invited, special)  

Venue：ACT CITY HAMAMATSU Congress Center   Country：Japan  

Event date： 2013.6

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：名城大学   Country：Japan  

Event date： 2013.3

Language：Japanese   Presentation type：Oral presentation (keynote)  

Venue：東京理科大学   Country：Japan  

Event date： 2013.3

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：ホテル阪急エキスポパーク   Country：Japan  

Event date： 2013.3

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：東京理科大学   Country：Japan  

Event date： 2013.2

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：産総研関西センター   Country：Japan  

Event date： 2013.1

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：日本電子株式会社大手町野村ビル   Country：Japan  

Event date： 2012.12

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：名古屋大学フロンティアプラザ　ベンチャーホール   Country：Japan  

Event date： 2012.11

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：北海道大学学術交流会館   Country：Japan  

Event date： 2012.10

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：日本電子 山中湖保養所ジュラク荘   Country：Japan  

Event date： 2012.9

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：琵琶湖リゾートクラブ   Country：Japan  

Event date： 2012.6

Language：English   Presentation type：Oral presentation (invited, special)  

Venue：Uppsala University   Country：Sweden  

Event date： 2012.5

Language：English   Presentation type：Oral presentation (invited, special)  

Venue：Nagaragawa Convention Center   Country：Japan  

Event date： 2012.4

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：ゆうぽうと   Country：Japan  

Event date： 2012.3

Language：Japanese   Presentation type：Oral presentation (keynote)  

Venue：横浜国立大学   Country：Japan  

Event date： 2012.3

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：関西学院大学   Country：Japan  

Event date： 2012.1

Language：English   Presentation type：Oral presentation (invited, special)  

Country：Japan  

Event date： 2011.12

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：東レ総合研修センター   Country：Japan  

Event date： 2011.12

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：東レ総合研修センター   Country：Japan  

Event date： 2011.11

Language：Japanese   Presentation type：Oral presentation (keynote)  

Venue：沖縄コンベンションセンター   Country：Japan  

Event date： 2011.10

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：東北大学金属材料研究所   Country：Japan  

Event date： 2011.9

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：立山国際ホテル   Country：Japan  

Event date： 2011.9

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：幕張メッセ   Country：Japan  

Event date： 2011.8

Language：English   Presentation type：Oral presentation (invited, special)  

Country：United States  

Event date： 2010.12

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Country：Japan  

Event date： 2010.12

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Country：Japan  

武藤俊介

Event date： 2010.11

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Country：Japan  

Event date： 2010.9

Language：English   Presentation type：Oral presentation (invited, special)  

Event date： 2010.7

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Country：Japan  

Event date： 2010.5

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Country：Japan  

Event date： 2009.11

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Country：Japan  

Event date： 2009.10

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Country：Japan  

Event date： 2009.10

Language：English   Presentation type：Oral presentation (invited, special)  

Event date： 2009.9

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Country：Japan  

Event date： 2009.9

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Country：Japan  

Event date： 2009.8

Language：English   Presentation type：Oral presentation (invited, special)  

Event date： 2009.7

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Country：Japan  

Event date： 2009.3

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Country：Japan  

Event date： 2008.9

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Country：Japan  

Event date： 2008.6

Language：English   Presentation type：Oral presentation (invited, special)  

Country：Japan  

Event date： 2007.11

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Country：Japan  

Event date： 2007.9

Language：English   Presentation type：Oral presentation (invited, special)  

Country：Japan  

Event date： 2007.8

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Country：Japan  

Event date： 2007.5

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Country：Japan  

Event date： 2006.7

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Country：Japan  

Event date： 2006.3

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Country：Japan  

Event date： 2006.3

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Country：Japan  

Event date： 2006.1

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Country：Japan  

Event date： 2006.1

Language：Japanese  

Event date： 2005.11

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Country：Japan  

Event date： 2005.11

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Country：Japan  

Event date： 2005.9

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Country：Japan  

Event date： 2005.8

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Country：Japan  

Event date： 2005.3

Language：English   Presentation type：Oral presentation (invited, special)  

Country：Japan  

Event date： 2004.6

Language：English   Presentation type：Oral presentation (invited, special)  

Country：Japan  

Event date： 2003.10

Language：English   Presentation type：Oral presentation (invited, special)  

Event date： 2003.5

Language：English   Presentation type：Oral presentation (invited, special)  

Event date： 2003.3

Language：English   Presentation type：Oral presentation (invited, special)  

Country：Japan  

Event date： 2003.1

Language：English   Presentation type：Oral presentation (invited, special)  

Country：Japan  

Event date： 2002.12

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Country：Japan  

Event date： 2002.5

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Country：Japan  

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：北海道大学  

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：㈱ニチイ学館神戸ポートアイランドセンター  

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：幕張メッセ国際会議場  

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：名古屋工業大学  

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：品川シーズンテラスカンファレンス  

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：物質・材料研究機構  

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：東京理科大学森戸記念館  

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：タワーホール船堀  

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：名古屋大学VBLホール  

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：物質・材料研究機構  

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：物質・材料研究機構  

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：名古屋国際会議場  

Language：English   Presentation type：Oral presentation (invited, special)  

Venue：S. Muto  

Language：English   Presentation type：Oral presentation (invited, special)  

Venue：CHENGDU XIYUE HOTEL, Chengdu, China  

Language：English   Presentation type：Oral presentation (invited, special)  

Venue：Phonix Convention Center and Sheraton Grand Phoenix  

Language：English   Presentation type：Oral presentation (invited, special)  

Venue：BEXCO in Busan, Korea  

Language：English   Presentation type：Oral presentation (invited, special)  

Venue：Miyako Messe, Kyoto  

Language：English   Presentation type：Oral presentation (invited, special)  

Venue：Finnstown Castle Hotel, Dublin, Ireland  

Language：English   Presentation type：Oral presentation (invited, special)  

Venue：Sendai International Center, Japan  

Language：Japanese   Presentation type：Oral presentation (keynote)  

Venue：マホロバ・マインズ三浦  

Language：Japanese   Presentation type：Oral presentation (invited, special)  

Venue：名古屋国際会議場