A5034231550- Advanced X-ray Imaging Techniques
- Nuclear Physics and Applications
- Magnetic properties of thin films
- High-pressure geophysics and materials
- Characterization and Applications of Magnetic Nanoparticles
- Semiconductor Lasers and Optical Devices
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Particle physics theoretical and experimental studies
- Conducting polymers and applications
- Metal and Thin Film Mechanics
- Ferroelectric and Piezoelectric Materials
- Nanocomposite Films for Food Packaging
- Advanced Sensor and Energy Harvesting Materials
- Acoustic Wave Resonator Technologies
- Surface Roughness and Optical Measurements
- Heat and Mass Transfer in Porous Media
- Potassium and Related Disorders
- Electrodeposition and Electroless Coatings
- Gout, Hyperuricemia, Uric Acid
- Adhesion, Friction, and Surface Interactions
- Geomagnetism and Paleomagnetism Studies
- Crystallography and Radiation Phenomena
- Laser Material Processing Techniques
- Advancements in Photolithography Techniques
Tohoku University
2013-2025
RIKEN Center for Advanced Photonics
2022
Osaka University
2013
Institute for Laser Technology
2013
Dexerials (Japan)
2001
Sony Corporation (United States)
1985-1997
Nagoya University
1991-1994
In this study, the electrical conducting properties of six types biomaterials, comprising cellulose and chitosan derived from terrestrial plants marine products, respectively, were investigated using electron spin resonance (ESR) Schottky junction characteristics. Kenaf, chitosan, conifer, RCH2OH (R = C11H17O9) exhibited ESR spectra showing unpaired electrons at 295 K, demonstrating rectifying effects room temperature. contrast, RCOONa (C12H17O11Na) α-chitin, which did not exhibit observable...
Under the JST-ERATO project in progress to develop X-ray and neutron phase-imaging methods together, recent achievements have been selected reviewed after describing merit principle of phase imaging method. For imaging, developments four-dimensional tomography microscopy at SPring-8, Japan are mainly presented. an approach combination with time-of-flight method developed J-PARC, is described description new Gd grating fabrication.
Cognitive radio technology on TV white spaces has been promoted worldwide to solve the spectrum shortage problem due explosive increase in personal communication systems such as smartphones. One of most difficult challenges utilize space for use is miniaturization frequency and bandwidth tunable filters select vacant channels. We have developed a one-chip filter by wafer-level transfer-integration BaSrTiO <inf xmlns:mml="http://www.w3.org/1998/Math/MathML"...
This paper describes magnetic properties, recording characteristics and noise properties of metal evaporated (ME) tapes, especially for multilayer structures. Also the future potential ME tape is studied by a simulation method.
For the neutron phase imaging with a Talbot-Lau interferometer, we have fabricated absorption gratings pitch of 9 μm by oblique evaporation gadolinium. The performances these for measurement were experimentally evaluated at RADEN in J-PARC, observing transmission and visibility moiré fringe interferometer. A new analysis method using wavelength-resolved was also attempted to estimate characteristics gratings.
Abstract Bio-semiconductors are expected to be similar organic semiconductors; however, they have not been utilized in application yet. In this study, we show the origin of electron appearance, N- and S-type negative resistances, rectification, switching effects semiconductors with energy storage capacities up 418.5 mJ/m 2 using granulated amorphous kenaf cellulose particles (AKCPs). The radical electrons AKCP at 295 K appear via glycosidic bond C 1 –O · –C 4 . Hall effect measurements...
To demonstrate the highest areal recording density of tape media, we have developed a metal evaporated with higher magnetic anisotropy 2.5times10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">5</sup> J/m xmlns:xlink="http://www.w3.org/1999/xlink">3</sup> and finer activation volume 2.7times10 xmlns:xlink="http://www.w3.org/1999/xlink">-24</sup> m Co-CoO layer deposited on smoother base film. A capability an 23.0 Gb/in...
Neutron phase imaging is a developing technology following the earlier development of X-ray using gratings. Making high aspect ratio structures for neutron gratings crucial to ensure sufficient function absorption gratings, which usage Gd effective. Oblique evaporation on Si grating an excellent approach fabrication, but non-uniformity remaining problem in fabricating large enough required field view imaging. In this study, we propose fabrication process, moved during oblique process attain...
For efficient differential-phase-contrast imaging, we have demonstrated the wavelength-resolved neutron Talbot-Lau interferometry with wavelength resolution of 0.11 A over a wide range 2.5–7.5 at RADEN in J-PARC Materials and Life Science Experimental Facility. The time-of-flight measurement has clearly showed that visibility moire fringes intensity oscillations interferometer varied continuously wavelength, dependence differential phase metal samples was measured. Based on analysis...
This is the first report on successful direct transfer of barium strontium titanate (BST) grown a sapphire substrate at high temperature (~650 °C) to target low temperature. The key point process pre-irradiation frequency-tripled Nd:YVO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">4</sub> laser adsorption layer beneath BST through transparent substrate, which weakens BST/Pt adhesion by thermal effect. bonded substrates separated interface...
Computer simulations and experiments are performed to investigate the effect of thin magnetic layer on digital recording performance. Simulated patterns allow us consider mechanism cause changes in output signal. The modulation noise, signal-to-noise ratio, overwrite performance investigated experimentally. A 0.4 dB higher SNR for DDSIII format is confirmed. It shown that only disadvantage a decrease long wavelength
We investigated thin metal evaporated tapes with MR heads in a helical scanning system, trying to achive high recording density. found that ME tape can realize low Mr•t values by changing the amount of oxygen during evaporation and thickness magnetic layer obtain noise media. Thin tapas are suitable media for sensitivity such as heads.
We have been developing the laser selective transfer techniques to Barium Strontium Titanate (BST), which has excellent dielectric properties, prepared on a heat-resistant sapphire substrate target substrate. As sample, Pt/BST/Au structures were made The was irradiated from backside of substrate, weakens Pt/sapphire adhesion. After irradiation, separated at interface and BST transferred In order optimize irradiation conditions, dependences process wavelengths (1064nm 532nm) pulsewidths (10ns...
We have developed a new neutron phase imaging system with Talbot-Lau interferometer for utilization at the CN-3 port of Kyoto University Reactor. To achieve efficient differential-phase and visibility (dark-field) this beamline, we adopted relatively shorter design wavelength 2.7 Å. By fabricating absorption gratings thick gadolinium absorbers, were able to obtain clear moiré fringes high 55% thermal neutrons. As demonstration its capabilities expanded actual in medium-sized sources,...
This paper addresses the effect of a shield for ring head to improve high track density. We analyzed shape and position with finite-element method checked using three-dimensional magnetic recording simulator in which curing reversal model self-consistent calculations were combined method. In this analysis, all components fringing field reduced, especially 30-degree components, refers orientation angle obliquely oriented metal evaporated tapes. calculated side erase band (SEB) from recorded...
Neutron imaging based on a compact Talbot–Lau interferometer was demonstrated using the RIKEN accelerator-driven neutron source (RANS). A consisting of gadolinium absorption gratings and silicon phase grating constructed connected to RANS. Because pulsed thermal neutrons from RANS position-sensitive detector equipped with time-of-flight (TOF) analysis, moiré interference patterns generated were extracted at TOF range around design wavelength (2.37 Å) optimal for interferometer. Differential...