Volume 88, Number 2, October 2009
|Number of page(s)||6|
|Section||Condensed Matter: Structural, Mechanical and Thermal Properties|
|Published online||09 November 2009|
Effect of substrate on thermal conductivity of single-walled carbon nanotubes
Semenov Institute of Chemical Physics, Russian Academy of Sciences - Moscow 119991, Russia
2 Nonlinear Physics Center, Research School of Physics and Engineering, Australian National University Canberra, ACT 0200, Australia
3 Department of Physics and Center for Nonlinear Studies, Hong Kong Baptist University - Hong Kong, China
4 Department of Physics, University of Houston - Houston, TX 77204-5005, USA
Corresponding author: firstname.lastname@example.org
Accepted: 9 October 2009
We analyze numerically the thermal conductivity of single-walled carbon nanotubes placed on a flat rigid substrate. We demonstrate that the character of thermal conductivity depends crucially on the interaction between the nanotube and the substrate. In particular, we reveal that unlike the well-established anomalous thermal conductivity of isolated carbon nanotubes, the nanotube placed on a substrate demonstrates normal thermal conductivity due to the appearance of a narrow gap in the frequency spectrum of acoustic phonons.
PACS: 65.80.+n – Thermal properties of small particles, nanocrystals, and nanotubes / 63.22.Gh – Nanotubes and nanowires
© EPLA, 2009
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