Thermal conductivity of multiwalled carbon nanotubes

Da Jiang Yang*, Qing Zhang, George Chen, S. F. Yoon, J. Ahn, S. G. Wang, Q. Zhou, Q. Wang, Jingqi Li

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    334 Scopus citations

    Abstract

    Thermal conductivity of multiwalled carbon nanotubes (CNT's) prepared using a microwave plasma chemical vapor deposition system is investigated using a pulsed photothermal reflectance technique. We find that the average thermal conductivity of carbon nanotube films, with the film thickness from 10 to 50 μm, is around 15 W/m K at room temperature and independent of the tube length. Taking a small volume filling fraction of CNT's into account, the effective nanotube thermal conductivity could be 2 × 10 2 W/m K, which is smaller than the thermal conductivity of diamond and in-plane graphite by a factor of 9 and 7.5, respectively.

    Original languageEnglish (US)
    Article number165440
    Pages (from-to)1654401-1654406
    Number of pages6
    JournalPhysical Review B - Condensed Matter and Materials Physics
    Volume66
    Issue number16
    StatePublished - Oct 15 2002

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics

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