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Jpn. J. Appl. Phys. 47 (2008) pp. 1956-1960  |Previous Article| |Next Article|  |Table of Contents|
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Selected Topics in Applied Physics

Advances in Carbon Nanotube Applications

Growth of Vertically Aligned Single-Walled Carbon Nanotubes on Alumina and Sapphire Substrates

Hiroshi Ohno1, Daisuke Takagi1, Kazuki Yamada1, Shohei Chiashi1, Akio Tokura2, and Yoshikazu Homma1,3

1Department of Physics, Tokyo University of Science, Tokyo 162-8601, Japan
2NTT Basic Research Laboratories, NTT Corporation, Atsugi, Kanagawa 243-9018, Japan
3CREST-JST, Tokyo 102-0075, Japan

(Received October 12, 2007; accepted December 8, 2007; published online April 18, 2008)

The synthesis of vertically aligned carbon nanotubes with submillimeter-order heights was performed using ethanol chemical vapor deposition with Co catalysts supported on Al2O3 substrates. The effects of Al2O3 in the form of amorphous alumina and single-crystalline sapphire were investigated through a characterization of the Co catalyst particles on the substrates. An important effect of Al2O3 was found to be the production of highly dense and nanosized Co particles, owing to a low surface diffusivity.

URL: http://jjap.jsap.jp/link?JJAP/47/1956/
DOI: 10.1143/JJAP.47.1956


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