A5033191191- Astro and Planetary Science
- Planetary Science and Exploration
- Solidification and crystal growth phenomena
- Quantum, superfluid, helium dynamics
- Advanced Thermoelectric Materials and Devices
- Magnetic Properties and Applications
- Nuclear Physics and Applications
- Spacecraft and Cryogenic Technologies
- Geomagnetism and Paleomagnetism Studies
- Thermal properties of materials
- Intermetallics and Advanced Alloy Properties
- Advanced ceramic materials synthesis
- Advancements in Battery Materials
- Metallic Glasses and Amorphous Alloys
- Magnetic Properties of Alloys
- Silicone and Siloxane Chemistry
- Magnetic and Electromagnetic Effects
- High-pressure geophysics and materials
- Semiconductor materials and interfaces
- Advanced Sensor Technologies Research
- Radioactivity and Radon Measurements
- Metal and Thin Film Mechanics
- Atomic and Subatomic Physics Research
- Analytical Chemistry and Sensors
- Magnetic confinement fusion research
Panasonic (Japan)
2024
Tohoku University
1991-2024
National Institute of Advanced Industrial Science and Technology
2013-2023
Nihon University
1997-2019
Wrightington Hospital
2018
University of Tsukuba
1996-2010
The University of Tokyo
2008
Nagoya University
1998-2006
Shinshu University
2005
Mitsubishi Heavy Industries (Germany)
2005
Thermally conductive ceramic/plastic composite materials are needed in various industries for thermal management. The present work aimed at creating films of hexagonal boron nitride (h-BN) particles and polyimide. A conductivity 7 W m−1 K−1 was achieved solids loading 60 vol% with flexibility maintained.
Garnet-type Ta-substituted Li7La3Zr2O12 materials attract considerable attention as solid electrolytes for use in future oxide-based all-solid-state lithium-ion batteries owing to their superior ionic conductivity and chemical electrochemical stabilities. However, high-temperature sintering above 1000 °C, which is needed realize high conductivity, results the formation of insulating interface impurities at electrode-electrolyte interface. Herein, low-temperature Li6.5La3Zr1.5Ta0.5O12 (LLZT)...
We have studied the epitaxial growth of perovskite manganite LaMnO3 (LMO) on SrTiO3(100) and LaAlO3(100) substrates by means chemical solution deposition assisted pulsed UV laser irradiation, termed excimer laser-assisted metal organic (ELAMOD). Cross-sectional transmission electron microscopy observations revealed that LMO was crystallized from a coated amorphous matrix preferentially grown substrate surface. In this process, optical absorbance for irradiated plays an essential role...
To investigate the etiology of Alzheimer’s disease, we administered aluminum to healthy rats and examined uptake in brain isolated cell nuclei by particle-induced X-ray emission (PIXE) analysis. Ten days after last injection, Al was detected rat PIXE also demonstrated 15 months oral administration. Moreover, from patients with disease. Silver impregnation studies revealed that spines attached dendritic processes cortical nerve cells decreased remarkably Electron microscopy characteristic...
A polycrystalline sample of Na2+x Ga2+x Sn4-x with x = 0.19 has low thermal conductivities 0.56 and 0.58 W m(-1) K(-1) due to static dynamic positional disorder Na atoms in the crystal structure dimensionless figures merit (ZT values) values 0.98 1.28 at 295 340 K, respectively. The performance is comparable those commercial Bi2 Te3 -based materials.
For making a photoinduced crystal growth method more universal, we have investigated the key parameters for polycrystalline nucleation from an amorphous matrix of LaMnO3 with focus on pulsed photothermal heating time under excimer laser irradiation. We clearly demonstrated that effective annealing (teff) was very important crystallization The teff is defined as in which temperature at film surface increases over LaMnO3. threshold value initial evaluated to be approximately 60 ns this material.
Hole trap levels in a Mg-doped GaN grown by metalorganic vapor phase epitaxy (MOVPE) are studied with deep level transient spectroscopy (DLTS). The Mg concentration of the sample was 4.8×1019 cm−3, but hole as low 1.3×1017 cm−3 at room temperature. DLTS spectrum has dominant peak D1 activation energy 0.41±0.05 eV, accompanied two additional peaks energies 0.49±0.09 eV(D2) and 0.59±0.05 eV(D3). It found that consists five peaks, each which different capture cross section. A relevant model for...
A novel InGaAsP/InP buried heterostructure (BH) laser was fabricated on a p-InP substrate. This can provide peak pulse output of 0.8 W per facet with stable lateral transverse mode oscillation and enables the fault location measurement single fibre cable over 20 km.
The thermal conductivity of molten silicon was measured by a hot-disk method in short-duration microgravity environments. sensor made molybdenum foil cut conducting pattern and covered with an aluminum nitride plate. Aluminum has good resistivity against corrosion from melt the protected silicon. on ground estimated to be 45.6 W·m -1 ·K at melting point (1687 K). about 5% lower than that ground.
Two Mg-doped GaN films with different doping concentrations were grown by a metalorganic chemical vapor deposition technique. Photoluminescence (PL) experiments carried out to investigate the optical properties of these films. For highly GaN, PL spectra at 10 K are composed blue luminescence (BL) band 2.857 eV and two excitonic lines 3.342 3.282 eV, in addition L2 phonon replica 3.212 eV. The intensity L1 line decreases monotonously an increase temperature. However, first slowly increases...
Abstract— Cosmic‐ray‐produced (cosmogenic) nuclides were studied in fragments of the Brenham pallasite, a large stony iron meteorite. The contents light noble gases (He, Ne, and Ar) long‐lived radionuclides ( 10 Be, 26 Al, 36 Cl, 53 Mn), produced by nuclear reactions with cosmic rays, measured separated metal olivine phases from numerous samples representing wide range shielding conditions meteoroid. distribution cosmogenic nuclide concentrations follows patterns similar to that observed...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotocatalytic oxidation of sulfur on titanium dioxideYasumichi Matsumoto, Hideaki Nagai, and Eiichi SatoCite this: J. Phys. Chem. 1982, 86, 24, 4664–4668Publication Date (Print):November 1, 1982Publication History Published online1 May 2002Published inissue 1 November 1982https://pubs.acs.org/doi/10.1021/j100221a005https://doi.org/10.1021/j100221a005research-articleACS PublicationsRequest reuse permissionsArticle Views240Altmetric-Citations23LEARN...
Distributions of radiocaesium (134Cs and 137Cs) derived from the Tokyo Electric Power Company (TEPCO) Fukushima Dai-ichi Nuclear Plant (FNPP1) accident in North Pacific Ocean summer 2012 were investigated. We have estimated inventory surface layer using optimal interpolation analysis subducted amount into central mode water (CMW) by vertical profiles FNPP1-134Cs mass balance as first approach. The 134Cs August-December was at 5.1 ± 0.9 PBq on 1 October 2012, which corresponds to 8.6 1.5 when...
Tin-based intermetallics with tunnel frameworks containing zigzag Na chains that excite correlated rattling impinging on the framework phonons are attractive as thermoelectric materials owing to their low lattice thermal conductivity. The of atoms in and origin conductivity is uncovered via experimental computational analyses. behave oscillators along tunnel, resulting substantial interactions between chain framework. In these intermetallic compounds, a shorter inter-rattler distance results...