Faculty Profiles - KODAMA Naoto

Papers - KODAMA Naoto

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High-rate synthesis of Si nanowires using modulated induction thermal plasmas Reviewed

Yosuke Ishisaka, Naoto Kodama, Kentaro Kita, Yasunori Tanaka, Yoshihiko Uesugi, Tatsuo Ishijima, Shiori Sueyasu, Shu Watanabe, Keitaro Nakamura

APPLIED PHYSICS EXPRESS Vol. 10 ( 9 ) 2017.9

Language：English Publishing type：Research paper (scientific journal) Publisher：IOP PUBLISHING LTD

Using 20kW Ar-H-2 pulse-modulated induction thermal plasma (PMITP) with time-controlled feeding of feedstock (TCFF), numerous Si nanowires were synthesized rapidly at 1,000mgh(-1) without the intentional addition of catalysts. The PMITP + TCFF method is our original method for nanomaterial synthesis. The PMITP periodically provides a unique field including higher-temperature plasma during "on-time" and a lower-temperature plasma during "off-time". For rapid and efficient evaporation, metal-grade Si powder feedstock was intermittently injected synchronously into the generated Ar-H-2 PMITP. The synthesized products were analyzed using various analytical techniques. The synthesized products were Si nanowires 10-30 nm in diameter with a SiOx surface layer. (C) 2017 The Japan Society of Applied Physics

DOI： 10.7567/APEX.10.096201

Web of Science

Spatiotemporal distribution of thermal plasma temperature and nucleation occurrence in a torch during TiO<sub>2</sub> nanopowder synthesis Reviewed

N. Kodama, Y. Tanaka, K Kita, Y Ishisaka, Y. Uesugi, T. Ishijima, S. Sueyasu, K. Nakamura

Plasma Sources Science and Technologies 2017

Fundamental study of Ti feedstock evaporation and precursor formation process in inductively coupled thermal plasmas during TiO₂ nanopowder synthesis Reviewed

N. Kodama, K. Kita, Y. Ishisaka, Y. Tanaka, Y. Uesugi, T. Ishijima, S. Sueyasu, K. Nakamura

Journal of Physics D: Applied Physics 2016

A method for large-scale synthesis of Al-doped TiO₂ nanopowder using pulse-modulated induction thermal plasmas with time-controlled feedstock feeding Reviewed

Naoto Kodama, K. Kita, Y. Tanaka, Y. Uesugi, T. Ishijima, S. Watanabe, K. Nakamura

Journal of Physics D: Applied Physics 2014

Two-dimensional spectroscopic observation in the plasma torch for the pulse-modulated induction thermal plasmas for nanopowder synthesis Reviewed

N. Kodama, K. Kita, Y. Tanaka, Y. Uesugi, T. Ishijima, S. Watanabe, K. Nakamura

Journal of Physics: Conference Series 2014

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Papers - KODAMA Naoto