Influence of growth mode of carbon nanotubes on physical properties for multiwalled carbon nanotube films grown by catalystic chemical vapor deposition

Masahiro Horibe, Mizuhisa Nihei, Daiyu Kondo, Akio Kawabata, Yuji Awano

    Research output: Contribution to journalArticle

    17 Citations (Scopus)

    Abstract

    We have successfully developed control of the growth mode of carbon nanotubes (CNTs) by using titanium film and its oxidized form, and measured physical properties. The growth mode of CNTs can be controlled by the under layers of catalysts. Obtained CNT films have the site density of 1010 cm-2 for both the base- and tip-growth modes. Measured electrical resistance of 2-μm-diameter CNT-via, mechanical strength, and thermal conductivity for the base-growth mode CNT films were 91.1 Ω, 670 kPa and 291 W/mK, respectively. Better physical properties were observed for base-growth mode CNT films, compared with the tip-growth mode CNT films. In the base-growth mode, one CNT with a TiC contact had an estimated low electrical resistance of 100 kΩ, a high mechanical strength of 5.5 MPa, and a high thermal conductivity of 2400 W/mK.

    Original languageEnglish
    Pages (from-to)7337-7341
    Number of pages5
    JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
    Volume43
    Issue number10
    DOIs
    Publication statusPublished - 2004 Oct 1

    Keywords

    • Base-growth mode CNT
    • Electrical resistance
    • Mechanical strength
    • Multiwalled carbon nanotubes
    • Thermal conductivity
    • Tip-growth mode CNT

    ASJC Scopus subject areas

    • Engineering(all)
    • Physics and Astronomy(all)

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