Search Results - "Nakayama, Koji S."

Metastable phases of Ag–Si: amorphous Si and Ag-nodule mediated bonding by Nakayama, Koji S., Nishijima, Masahiko, Zhang, Yicheng, Chen, Chuantong, Ueshima, Minoru, Suganuma, Katsuaki

“…Metastable phases such as supersaturated solid solutions, supercooling, and amorphous phases are well-known in metallurgy. They are often composed in…”
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Formation of Metallic Glass Nanowires by Gas Atomization by Nakayama, Koji S, Yokoyama, Yoshihiko, Wada, Takeshi, Chen, Na, Inoue, Akihisa

“…Gas atomization which is a conventional technique in powder metallurgy is adapted for the formation of metallic glass nanowires. This approach is able to…”
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Ferromagnetic resonance in soft-magnetic metallic glass nanowire and microwire by Nakayama, Koji S., Chiba, Tomoaki, Tsukimoto, Susumu, Yokoyama, Yoshihiko, Shima, Toshiyuki, Yabukami, Shin

“…We report the magneto-impedance measurements in soft-magnetic Co36Fe36B19Si5Nb4 metallic glass nano/micro wires produced by gas atomization. The wire impedance…”
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Phase relation between supercooled liquid and amorphous silicon by Okada, Junpei T., Sit, Patrick H.-L., Ishikawa, Ryo, Ishikawa, Takehiko, Chen, Jinfan, Nakayama, Koji S., Maeda, Kensaku, Yokoyama, Yoshihiko, Watanabe, Yuki, Paradis, Paul-François, Watanabe, Yasuhiro, Nanao, Susumu, Ikuhara, Yuichi, Kimura, Kaoru, Uda, Satoshi

“…The phase relation between supercooled liquid silicon (l-Si) and amorphous silicon (a-Si) is discussed based on experimental results. Electrostatically…”
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Controlled Formation and Mechanical Characterization of Metallic Glassy Nanowires by Nakayama, Koji S., Yokoyama, Yoshihiko, Ono, Takahito, Chen, Ming Wei, Akiyama, Kotone, Sakurai, Toshio, Inoue, Akihisa

“…Extraordinary flexible, very long, and individual amorphous nanowires composed of metallic glasses are produced by the drawing process based on superplastic…”
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Dealloying-oxidation Technique as a Powerful Synthetic Tool for Sodium Titanate Nanowires with High Ion-exchange Ability by Saito, Teppei, Zhang, Man, Kavthe, Rahul D, Akagi, Kazuto, Nakayama, Koji S, Adschiri, Tadafumi, Asao, Naoki

“…Fine sodium titanate nanowires were fabricated easily from TiAl3 alloy grains via alkaline treatment at room temperature. The resulting materials were…”
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Ultrafine Sodium Titanate Nanowires with Extraordinary Sr Ion-Exchange Properties by Ishikawa, Yoshifumi, Tsukimoto, Susumu, Nakayama, Koji S, Asao, Naoki

“…Ultrafine sodium titanate nanowires are produced from TiAl alloy precursors via a nonthermal process where Al leaching and Ti oxidation occur simultaneously in…”
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Cerium Oxide Nanorods with Unprecedented Low-Temperature Oxygen Storage Capacity by Ishikawa, Yoshifumi, Takeda, Maiki, Tsukimoto, Susumu, Nakayama, Koji S., Asao, Naoki

“…Ultrafine cerium oxide nanorods are produced from rapidly liquid quenched Ce–Al alloy precursors by a corrosion method through the selective leaching of Al and…”
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Probing heat generation during tensile plastic deformation of a bulk metallic glass at cryogenic temperature by Brennhaugen, David D. E., Georgarakis, Konstantinos, Yokoyama, Yoshihiko, Nakayama, Koji S., Arnberg, Lars, Aune, Ragnhild E.

“…Despite significant research efforts, the deformation and failure mechanisms of metallic glasses remain not well understood. In the absence of periodic…”
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Granular Barium Titanate Nanowire-Based Adsorbents for the Removal of Strontium Ions from Contaminated Water by Saito, Teppei, Shiraiwa, Norihito, Morioka, Yuta, Akagi, Kazuto, Nakayama, Koji S, Adschiri, Tadafumi, Asao, Naoki

“…Highly selective uptake of Sr2+ was achieved by the use of granulated barium titanate nanowires as a designed practical adsorbent, which is desirable for use…”
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Hydrogels containing metallic glass sub-micron wires for regulating skeletal muscle cell behaviour by Ahadian, Samad, Banan Sadeghian, Ramin, Yaginuma, Shin, Ramón-Azcón, Javier, Nashimoto, Yuji, Liang, Xiaobin, Bae, Hojae, Nakajima, Ken, Shiku, Hitoshi, Matsue, Tomokazu, Nakayama, Koji S, Khademhosseini, Ali

“…Hydrogels with tunable electrical and mechanical properties have a wide range of biological applications in tissue engineering, biosensing, and biorobotics. In…”
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Metallic Glass Nanowire by Nakayama, Koji S, Yokoyama, Y, Xie, G, Zhang, Q. S, Chen, M. W, Sakurai, T, Inoue, A

“…Metallic glass nanowires were spontaneously created on the fracture surfaces that were produced by a conventional mechanical test. The presence of the…”
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Metallic Glass Nanowires: Controlled Formation and Mechanical Characterization of Metallic Glassy Nanowires (Adv. Mater. 8/2010) by Nakayama, Koji S., Yokoyama, Yoshihiko, Ono, Takahito, Chen, Ming Wei, Akiyama, Kotone, Sakurai, Toshio, Inoue, Akihisa

“…Owing to the absence of dislocation defects and grain boundaries, the amorphous structure of metallic glass possesses superior mechanical properties compared…”
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Surface properties of Zr50Cu40Al10 bulk metallic glass by Nakayama, Koji S., Yokoyama, Y., Sakurai, T., Inoue, A.

“…Atomic force microscope (AFM) makes it possible to image the surface morphological evolutions of the Zr50Cu40Al10 bulk metallic glass (BMG). The heating in…”
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Metallic glass nanofibers in future hydrogel-based scaffolds by Sadeghian, Ramin Banan, Ahadian, Samad, Yaginuma, Shin, Ramon-Azcon, Javier, Liang, Xiaobin, Nakajima, Ken, Shiku, Hitoshi, Matsue, Tomokazu, Nakayama, Koji S., Khademhosseini, Ali

“…Electrically conductive reinforced hydrogels offer a wide range of applications as three-dimensional scaffolds in tissue engineering. We report electrical and…”
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Electron-stimulated desorption from an unexpected source: Internal hot electrons for Br–Si(1 0 0)-(2 × 1) by Trenhaile, B.R., Antonov, V.N., Xu, G.J., Nakayama, Koji S., Weaver, J.H.

“…The desorption of Br adatoms from Br-saturated Si(1 0 0)-(2 × 1) was studied with scanning tunneling microscopy as a function of dopant type, dopant…”
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Enhanced Reliability for Power Modules via a New Ag/Si Sinter Joining Strategy by Liu, Yang, Chen, Chuantong, Nakayama, Koji S., Ueshima, Minoru, Sakamoto, Takeshi, Takuya, Naoe, Nishikawa, Hiroshi, Suganuma, Katsuaki

“…In this work, with an appropriate adding amount of 20 vol % Si, the novel Ag-Si sintering demonstrated enhanced reliability during thermal shock cycling,…”
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Tunneling electron induced bromine hopping on Si(100)-(2 x 1) by Nakayama, Koji S, Graugnard, E, Weaver, J H

“…Tunneling electrons from the tip of a scanning tunneling microscope can be used to induce adatom hopping on Br-terminated Si(100)-(2x1) at low current and…”
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Surface modification without desorption: recycling of Cl on Si(100)-(2 x 1) by Nakayama, Koji S, Graugnard, E, Weaver, J H

“…We demonstrate chlorine-induced modification of Si(100)-(2 x 1) under conditions where Cl is recycled rather than desorbed as SiCl2. A dimer with 2 Cl atoms,…”
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Halogen chemisorption, the pairwise diffusion of I, and trapping by defects on Si(1 0 0) by Xu, G.J., Signor, A.W., Agrawal, Abhishek, Nakayama, Koji S., Trenhaile, B.R., Weaver, J.H.

“…Halogen molecules dissociatively chemisorb on Si(1 0 0)-(2 × 1), and the bonding structures that they adopt can be elucidated with scanning tunneling…”
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