Search Results - "Nakamura, Ryusuke"

The Kirkendall effect and nanoscience: hollow nanospheres and nanotubes by El Mel, Abdel-Aziz, Nakamura, Ryusuke, Bittencourt, Carla

“…Hollow nanostructures are ranked among the top materials for applications in various modern technological areas including energy storage devices, catalyst,…”
Get full text

Electron diffraction radial distribution function analysis of amorphous boron carbide synthesized by ion beam irradiation and chemical vapor deposition by Ishimaru, Manabu, Nakamura, Ryusuke, Zhang, Yanwen, Weber, William J., Peterson, George G., Ianno, Natale J., Nastasi, Michael

“…Amorphous boron carbide (a-BxC) networks consist of light elements, and their low atomic scattering factors makes structural analysis by x-ray diffraction…”
Get full text

Structure of crystallized particles in sputter‐deposited amorphous germanium films by Okugawa, Masayuki, Nakamura, Ryusuke, Hirata, Akihiko, Ishimaru, Manabu, Yasuda, Hidehiro, Numakura, Hiroshi

“…Pristine thin films of amorphous Ge prepared by sputtering are unstable and form coarse crystalline particles of 100 nm in size upon crystallization by…”
Get full text

The relation between amorphous structure and explosive crystallization of sputter-deposited amorphous germanium thin films by Okugawa, Masayuki, Nakamura, Ryusuke, Numakura, Hiroshi, Heya, Akira, Matsuo, Naoto, Yasuda, Hidehiro

“…In amorphous germanium (a-Ge) and amorphous silicon films, extremely rapid crystallization, called explosive crystallization, is known to occur by…”
Get full text

Low-temperature synthesis of crystalline GeSn with high Sn concentration by electron excitation effect by Kimura, Toshiki, Ishimaru, Manabu, Okugawa, Masayuki, Nakamura, Ryusuke, Yasuda, Hidehiro

“…The low-temperature synthesis of high-Sn-concentration GeSn is challenging in realizing flexible thin-film transistors and solar cells. Because of athermal…”
Get full text

Anomalous hardening and microstructural evolution accompanied by reordering and restoring of plastically deformed Co3Ti by Oka, Takahiro, Kaneno, Yasuyuki, Semboshi, Satoshi, Nakamura, Ryusuke, Takasugi, Takayuki

“…The anomalous hardening and microstructural evolution accompanied by the reordering and restoring of cold-rolled Co3Ti alloy annealed at 573–773K were…”
Get full text

Measurement of Diffusion Profile of Boron in α Iron by Secondary-ion Mass Spectrometry and Determination of Its Diffusion Coefficient by Hamana, Keisuke, Nakamura, Ryusuke, Numakura, Hiroshi, Suzuki, Takeyuki

“…We report an attempt to determine the diffusion coefficient of B in α Iron by measuring the penetration profile by means of secondary-ion mass spectrometry…”
Get full text

Transition in the nanoporous structure of iron oxides during the oxidation of iron nanoparticles and nanowires by Nakamura, Ryusuke, Matsubayashi, Gen, Tsuchiya, Hiroaki, Fujimoto, Shinji, Nakajima, Hideo

“…Changes in morphology during the oxidation of iron nanoparticles and nanowires in the temperature range 473–873 K have been studied by transmission electron…”
Get full text

Single-phase interdiffusion in the B2 type intermetallic compounds NiAl, CoAl and FeAl by Nakamura, Ryusuke, Takasawa, Koichi, Yamazaki, Yoshihiro, Iijima, Yoshiaki

“…Interdiffusion coefficients, D, in the B2 type NiAl, CoAl and FeAl phases have been determined by single phase diffusion couples over a wide temperature range…”
Get full text

二次イオン質量分析法によるα鉄中のホウ素の拡散浸透プロファイルの測定と拡散係数の決定 by 濱名, 桂佑, 仲村, 龍介, 沼倉, 宏, 鈴木, 健之

“…We report an attempt to determine the diffusion coefficient of B in α Iron by measuring the penetration profile by means of secondary-ion mass spectrometry…”
Get full text

Diffusion mechanisms in B2 NiAl phase studied by experiments on Kirkendall effect and interdiffusion under high pressures by Nakamura, Ryusuke, Fujita, Kohtaro, Iijima, Yoshiaki, Okada, Masuo

“…The intrinsic diffusivities of both components and the activation volume for interdiffusion in the B2 type NiAl phase have been measured in the high…”
Get full text

Diffusion of boron in an amorphous iron-boron alloy by Hamaguchi, Takumi, Nakamura, Ryusuke, Asano, Kohta, Wada, Takeshi, Suzuki, Takeyuki

“…•Diffusion coefficients of boron in an amorphous iron -boron alloy were evaluated at 533-653 K.•The activation energy for diffusion of B was determined to be…”
Get full text

Permeation and diffusion of hydrogen in vanadium using deoxidation and glow-discharge surface cleaning techniques by Fujimura, Naoya, Asano, Kohta, Nakamura, Ryusuke, Iijima, Yoshiaki

“…Vanadium (V) is an attractive hydrogen separation membrane material. However, its diffusion behavior under hydrogen permeation is not well understood mainly…”
Get full text

A case of cancer‐associated amyopathic dermatomyositis with anti‐Mi‐2 antibody by Nakamura, Ryusuke, Okamura, Ken, Watabe, Takahiro, Miura, Takahiro, Suzuki, Tamio

Get full text

Chemical Diffusion in Ni-V Solid Solution and in Ni3V by Inoue, Daisuke, Nakamura, Ryusuke, Numakura, Hiroshi

“…Diffusion in Ni-V solid-solution of A1 structure and Ni 3 V of D0 22 structure has been studied by interdiffusion experiments using single-phase (A1/A1 and D0…”
Get full text

Interdiffusion in B2 Type Intermetallic Compound FeAl under High Pressures by Nakamura, Ryusuke, Yamazaki, Yoshihiro, Iijima, Yoshiaki

“…Interdiffusion coefficient in the B2 FeAl phase at 46–50 at%Al has been measured in the temperature range from 1173 to 1473 K under the pressure from 0.1 MPa…”
Get full text

Electron diffraction radial distribution function analysis of amorphous boron carbide synthesized by ion beam irradiation and chemical vapor deposition by Ishimaru, Manabu, Nakamura, Ryusuke, Zhang, Yanwen, Weber, William J., Peterson, George G., Ianno, Natale J., Nastasi, Michael

“…Amorphous boron carbide (a-BxC) networks consist of light elements, and their low atomic scattering factors makes structural analysis by x-ray diffraction…”
Get full text

Measurement of Diffusion Profile of Boron in α Iron by Secondary-ion Mass Spectrometry and Determination of Its Diffusion Coefficient by Hamana, Keisuke, Nakamura, Ryusuke, Numakura, Hiroshi, Suzuki, Takeyuki

Get full text

Effects of hydrogen on structure and crystallization behavior of sputter-deposited amorphous germanium films by Hanya, Yuki, Nakamura, Ryusuke, Okugawa, Masayuki, Ishimaru, Manabu, Oohata, Goro, Yasuda, Hidehiro

“…We examined by transmission electron microscopy the structure and crystallization behavior of hydrogenerated and non-hydrogenerated amorphous germanium films…”
Get full text

Supersaturated vacancies and vacancy complexes in rapidly solidified B2 aluminide ribbons by Nakamura, Ryusuke, Yoshimi, Kyosuke, Tsurekawa, Sadahiro

“…The formation of vacancy complexes through aging heat treatments between 800 and 1200 K was studied for rapidly solidified NiAl and CoAl ribbons using TEM. In…”
Get full text