A5010742691- Gamma-ray bursts and supernovae
- Astronomical Observations and Instrumentation
- Astrophysical Phenomena and Observations
- SAS software applications and methods
- Pulsars and Gravitational Waves Research
- Graphene research and applications
- Fullerene Chemistry and Applications
- Statistical and numerical algorithms
- Solar and Space Plasma Dynamics
- Carbon Nanotubes in Composites
- Astrophysics and Cosmic Phenomena
- Astronomy and Astrophysical Research
- Earthquake Detection and Analysis
- Physics of Superconductivity and Magnetism
- Silicon Nanostructures and Photoluminescence
- Stellar, planetary, and galactic studies
- Ionosphere and magnetosphere dynamics
- Force Microscopy Techniques and Applications
- Diamond and Carbon-based Materials Research
- Advanced Condensed Matter Physics
- Particle Detector Development and Performance
- Molecular Junctions and Nanostructures
- Solid-state spectroscopy and crystallography
- High-pressure geophysics and materials
- Organic and Molecular Conductors Research
Hiroshima University
2024
Tokyo Institute of Technology
2019
University of Tsukuba
1987-2002
National Institute of Advanced Industrial Science and Technology
2002
Hokkaido University
1998
Massachusetts Institute of Technology
1992
The electronic structure for graphene monolayer tubules is predicted as a function of the diameter and helicity constituent tubules. calculated results show that approximately 1/3 these are one-dimensional metal which stable against Peierls distortion, other 2/3 semiconductors. implications discussed.
Abstract We report the analysis of additional multiband photometry and spectroscopy new adaptive optics (AO) imaging nearby planetary microlensing event TCP J05074264+2447555 (Kojima-1), which was discovered toward Galactic anticenter in 2017 (Nucita et al.). confirm nature light-curve anomaly around peak while finding no feature this event. also presence apparent blending flux absence significant parallax signal reported literature. The AO image reveals contaminating sources, making it most...
We demonstrate a use of self-assembled monolayer (SAM) as template to deposit in-situ Si nanoparticles fabricated by laser ablation. Scanning tunneling microscopy, atomic force microscopy observations, and photoluminescence measurements show that the deposited in situ on SAMs are round shaped, firmly attached surface, remain stable for at least couple months. Control over average size could be achieved, region where quantum confinement effect is important, changing Ar ambient pressure. Our...
We demonstrate an in situ selective adsorption of Si nanoparticles fabricated by laser ablation on a functionalized self-assembled monolayer (SAM). adsorbed –CH3 terminated SAM while particles did not adsorb –NH2, –F, –OH, and –COOH, SAMs. The end group solely determines the selectivity against nanoparticle adsorption. utilized screening ability SAMs to pattern onto desired locations substrate.
On the basis of mean-field Pytte Hamiltonian on a spin-Peierls system under applied fields, authors investigate magnetic structure in incommensurate high-field phase. Utilising soliton lattice solution which is analytically exact approximation, they study temperature and field dependences component staggered spin configuration originating from inherent antiferromagnetic nature system, addition to modulated magnetisation induced by forming state gain Zeeman energy. The former should have...
We present ab initio studies of adsorption half a monolayer carbon atoms on C(001)-(2 \ifmmode\times\else\texttimes\fi{} 1): H surface and silicon Si(001)-(2 1):H surface. find that the hydrogen migrate spontaneously C(001), while they remain stuck at their initial configuration Si(001). These results are consistent with experimental facts mediated epitaxies diamond silicon: The presence is helpful to epitaxy intrusive epitaxy. propose atomic acts as surfactant C(001) homoepitaxy.
Abstract Graphite fragments on a nanometer scale can present distinctive edge state depending the shape. By examining electronic band structure of graphite ribbons within Pariser-Parr-Pople model, we study effect electron-electron interaction state. Depending ribbon width N, long-range Coulomb affects narrow ribbons. The characteristics state, however, still persist in zigzag few width. Recent experimental approaches to synthesize nanographite are also introduced. Key Words: Edge...
In this study, a novel system was developed for the simultaneous respiration and motion measurement of zebrafish behavioral research. We propose model to capture instantaneous spatial distribution ventilatory signals estimating parameters originating from fish's head tail. By using these estimated parameters, proposed method accurately determines swimming position, body orientation, respiratory frequency fish. The uncertainty analysis shows distance error approximately 8.15 ± 4.98 mm, mean...
Abstract Graphite fragments of nanometer size, called nanographite, have a different electronic structure than both bulk graphite and aromatic molecules. In particular, if they zigzag edges, sharp peak in the density states at Fermi level is generated, suggesting to cause instability. We studied lattice distortion possible magnetization based on model ribbons with width, by taking into account electron-phonon electron-electron interactions form tight binding model. Key Words:...
We propose a new procedure for selecting favorable isomers of fullerenes satisfying the isolated pentagon rule (IPR) based on topological entity called phason line, trace boundaries between different bond localization patterns fullerene surface.The location, length and branching line reflects distribution pentagonal rings in molecule.Relationships properties observed stabilities have been studied, first separated C76, C78, C82 C84, then all IPR from C60 to C100.We found that number...