A5021030171- Surface and Thin Film Phenomena
- Particle Accelerators and Free-Electron Lasers
- Magnetic properties of thin films
- Particle accelerators and beam dynamics
- Advanced Materials Characterization Techniques
- Metal and Thin Film Mechanics
- Electron and X-Ray Spectroscopy Techniques
- Microstructure and mechanical properties
- ZnO doping and properties
- Advanced X-ray Imaging Techniques
- Superconducting Materials and Applications
- Nuclear Physics and Applications
- Ion-surface interactions and analysis
- Physics of Superconductivity and Magnetism
- Ga2O3 and related materials
- nanoparticles nucleation surface interactions
- Thin-Film Transistor Technologies
- Silicon Nanostructures and Photoluminescence
- Silicon and Solar Cell Technologies
- Advanced Chemical Physics Studies
- Non-Destructive Testing Techniques
- Iron-based superconductors research
- Rare-earth and actinide compounds
- Geophysical Methods and Applications
- Organic Electronics and Photovoltaics
Kyushu University
1991-2024
Iwate University
2006-2017
Kansai University
2005-2017
High Energy Accelerator Research Organization
1977-2013
The Graduate University for Advanced Studies, SOKENDAI
2010
National Institute for Materials Science
2005-2006
Waseda University
2006
Kobe University
2006
Tohoku University
1998-2005
The University of Tokyo
2001
Abstract Using the polymerase chain reaction, we quantitated amount of human T‐lymphotropic virus type I (HTLV‐I) proviral DNA in peripheral blood mononuclear cells from 18 patients with HTLV‐I–associated myelopathy/tropical spastic paraparesis; 17 HTLV‐I carriers without paraparesis, or other autoimmune inflammatory diseases; and 19 seronegative control subjects. The was 10‐ to 100‐fold higher HAM/TSP who had diseases than diseases. onset myelopathy at a younger age (15 39 years) an...
We report the experimental results of valence band offset at a ZnO/GaN (0001) heterointerface. The heterointerface is prepared by growing ZnO layer on GaN/Al2O3, in which epitaxially deposited plasma-assisted molecular-beam epitaxy, while GaN template metalorganic chemical-vapor deposition. Ex situ ultraviolet and x-ray photoelectron spectroscopy have been used to measure ΔEV. measurements are done before after Ar+ ion cleaning surfaces. Type-II alignments with offsets ΔEV=1.0 eV (before...
NW14A is a newly constructed undulator beamline for 100 ps time-resolved X-ray experiments at the Photon Factory Advanced Ring. This was designed to conduct wide variety of measurements, such as diffraction, scattering and absorption fine structure. Its versatility allowed by various instruments, including two undulators, three diffractometers, pulse laser systems an chopper. The potential detection structural changes on time scale demonstrated examples photo-induced in organic crystal...
The purpose of this study is to have a better understanding the unsteady behavior tip clearance flow at near-stall condition from multi-passage simulation and clarify relation between such unsteadiness rotating disturbance. This motivated by following concern. A single passage has revealed occurrence leakage vortex breakdown in transonic axial compressor rotor, leading field rotor passage. These phenomena were similar those instability, which classified one disturbances. In other words it...
Temperature dependence of the thermal-equilibrium defect density in undoped a-Si:H, a-${\mathrm{Si}}_{1\mathrm{\ensuremath{-}}\mathit{x}}$${\mathrm{C}}_{\mathit{x}}$:H, and a-${\mathrm{Si}}_{1\mathrm{\ensuremath{-}}\mathit{x}}$${\mathrm{N}}_{\mathit{x}}$:H is obtained both by situ electron-spin-resonance (ESR) measurements at elevated temperatures ESR frozen-in defects room temperature. The experimental results confirm that these alloy films, even for films with as high ${10}^{17}$...
Abstract Photoconductivity of ZnO single crystals grown by a hydrothermal method for ultraviolet light was measured. The have photo response in range wavelengths shorter than 380 nm. O‐faces the c ‐plane showed higher photocurrents and wider spectral did Zn‐faces. It is thought that band bending at surface regions large O‐face but small Zn‐face, because state density electron capture Zn‐face and, therefore, carriers generated region UV were effectively separated before their recombination....
We report on the growth of polarity-controlled ZnO epilayers by plasma-assisted molecular-beam epitaxy and measurement valence-band offset at ZnO/GaN heterointerface. The polarity is determined coaxial-impact-collision ion-scattering spectroscopy. band ultraviolet x-ray photoelectron high-resolution transmission electron microscopy study reveals formation an interface layer between GaN in O-plasma preexposed samples, while no formed Zn samples. preexposure prior to results Zn-polar (Zn...
The main purpose of this study is to grow an organic thin film consisting aromatic molecules with enhanced π-conjugations. For purpose, anthracene derivative, 9,10-bis (methylthio) anthracene, was deposited on a CaF2∕Si(111) substrate using hot-wall epitaxy technique. crystal structure derivative consists molecular stacks face-to-face configuration due the sulfur-sulfur interactions between neighboring molecules, which enhances π-electron conjugation. technique made precise control growth...
Nanostructure Al-based binary alloys with additions of Fe have been prepared by electron-beam evaporation. The composition dependence microstructures and mechanical properties has studied. deposits up to an content 4 at% consist a supersaturated solid solution Al. At higher contents, the amorphous crystalline phase grain size below 40 nm. range in which formed, as increased, became finer. Vickers hardness increases increasing reaches values 200 Hv 600 for contents 1 15 at%, respectively....
An angle-resolved photoemission study of the Bi (111) single crystal has been carried out in order to investigate detail bulk and surface electronic structures. The valence-band spectra exhibit features derived from $6p$-derived valence band, state spin-orbit gap, resonance state. From detailed spectra, dispersion relations band were determined along $T\ensuremath{-}U$ high-symmetry line Brillouin zone. These experimental dispersions are compared with theoretical results calculations,...
To shield the leakage flux densities of 3 T magnetic resonance imaging (MRI) higher than 1.5 MRI and to reduce degradation properties during construction, design an open-type magnetically shielded room (MSR) combined with square cylinders made conductive materials should be improved. This paper reports on optimal for improve shielding effect, while also considering ease construction a view practical use. Firstly, structure cylinders, such as their opening width slit were optimized using 3D...
A brand-new diffractometer system using multiple MYTHEN detectors has been established at BL19B2 Engineering Science Research I, a bending magnet beamline of SPring-8. unique feature this is the azimuthal rotating axis to configure direction detector array, which enables us change condition observing reciprocal space with one-dimensional detectors. It remarkable that adapting variety experiments such as out-of-plane and in-plane diffraction anisotropic materials, well high-throughput data...
We have performed a temperature-dependent photoemission study for quantum-well states in Ag(111) nanofilms grown on Cu(111) substrate. It is found that the linewidths of both state and surface broaden their intensities decrease with increasing temperature from 40 to 350 K. The linear dependence are explained as phonon contribution photohole lifetime width, expressed $2\ensuremath{\pi}\ensuremath{\lambda}{k}_{B}T.$ electron-phonon mass-enhancement parameter \ensuremath{\lambda} almost same an...
Psychological and neurophysiological studies have shown that attention modulates various sorts of perceptual processing. Here, we report affects the dominance binocular rivalry. Experiments using a dichoptic masking paradigm revealed when an observer was attending to one two orientations elements monocular texture, texture briefly presented opposite eye suppressed perception with attended orientation, while orientation which ignored sustained their dominance. Moreover, subsequent experiments...
Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter Facebook Reddit LinkedIn Tools Reprints and Permissions Cite Search Site Citation Shigeru Yamamoto, Kimichika Tsuchiya, Hiroyuki Sasaki, Tomohiro Aoto, Tatsuro Shioya; Development of the Short Gap Undulators at Photon Factory, KEK. AIP Conf. Proc. 23 June 2010; 1234 (1): 599–602. https://doi.org/10.1063/1.3463278 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends...
In order to detect steel bars and power cables inside pliable plastic conduit tubes buried in concrete walls slabs during the renovation of old buildings, we have developed a new nondestructive inspection (NDI) system. This system, which enables high precision detection easy handling at low cost, works by measuring impedance due inductance change solenoid coil exposes test material magnetic field. this is connected compensating capacitor with series-resonant circuit reduce multiply...
At the 2.5‐GeV ring of Photon Factory, a large reconstruction lattice around straight sections has been accomplished in 2005. Thus is main part straight‐sections upgrade project to rebuild existing undulators and increase number undulator beamlines. As result reconstruction, four short have newly created lengths much extended. To exploit new sections, short‐period narrow‐gap which sufficiently high brilliance hard x‐ray range developed. The work was completed seven‐month shutdown from March...
Nanocrystalline Al-based ternary alloys with additions of Zr and Fe have been prepared by electron-beam deposition. The composition dependence microstructures mechanical properties has investigated. Fine α-Al grains are observed the grain size significantly decreases increase content. Al95.3-Zr4.0-Fe0.7 Al96.5-Zr2.8-Fe0.7 consist containing coherent meta-stable L12 precipitate. addition Fe, effectively refined structure, increases hardness improves thermal stability L12-Al3Zr phase. alloy...