Wall-Controlled Growth of Carbon Nanotubes Using Temperature Treatment

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概要

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• Large arrays of self-oriented, multiwalled carbon nanotubes were obtained by chemical vapor deposition using a metallic substrate as well as a Si substrate. We controlled the size of catalytic Fe nanoparticles in order to control the wall number of the carbon nanotubes (CNTs). The size and distribution of Fe nanoparticles varied according to the growth condition, heat exposure time, and the thickness of the catalytic metal layer, resulting in a change in the wall number of CNTs grown. A decrease in heat exposure time from 10 to 0 s decreased the average wall number of CNTs. A combination of atomic force microscopy, scanning electron microscopy and transmission electron microscopy images provided evidence of the crucial role in the surface distribution of metallic catalyst particles on the substrate during the growth of CNTs. We confirmed the vertically aligned growth of CNTs that have a small number of walls and synthesized CNTs on a stainless plate with a 5 mm diameter.

• 2008-06-25

著者

• Lee Eui-wan

  Department Of Phisics Kyungpook National University

• Ryu Hyun-Woo

  Department of Physics, Kyungpook National University, Daegu 702-701, Korea

• Kim Chang-Duk

  Department of Physics, Kyungpook National University, Daegu 702-701, Korea

• Lee Hyeong-Rag

  Department of Physics, Kyungpook National University, Daegu 702-701, Korea

• Kang Jun-Tae

  Department of Physics, Kyungpook National University, Daegu 702-701, Korea

• Lee In-Seon

  Traditional Microorganism Resources Center, Daegu 704-701, Korea

• Park Jung-Hyun

  Traditional Microorganism Resources Center, Daegu 704-701, Korea

• Lee Chang-Seop

  Department of Chemistry, Keimyung National University, Daegu 704-701, Korea

• Lee Eui-Wan

  Department of Physics, Kyungpook National University, Daegu 702-701, Korea

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