Semi-quantitative study on the fabrication of densely packed and vertically aligned single-walled carbon nanotubes

Guo Fang Zhong, Takayuki Iwasaki, Hiroshi Kawarada

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    Abstract

    This paper presents, for the first time, a semi-quantitative study on the production of densely packed and vertically aligned (DPVA) single-walled carbon nanotubes (SWNTs) from ultra-thin catalytic films. An up-to-date highest volume density (60-70 kg m-3) and the corresponding high surface density on the order of 1016 m-2 of DPVA-SWNTs have been achieved by point-arc microwave plasma chemical vapor deposition. The precise thickness control of the sandwich-like catalytic nanostructure of 0.5 nm Al2O3/0.5 nm Fe/>5 nm Al2O3, developed by the authors, and a short-time (5 min) heat pretreatment of substrates at a temperature as low as 600 °C play the very key role in the process of fabricating DPVA-SWNTs.

    Original languageEnglish
    Pages (from-to)2009-2014
    Number of pages6
    JournalCarbon
    Volume44
    Issue number10
    DOIs
    Publication statusPublished - 2006 Aug

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    Keywords

    • Carbon nanotubes
    • Catalyst
    • Chemical vapor deposition
    • Density
    • Particle size

    ASJC Scopus subject areas

    • Materials Chemistry

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