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Temperature dependence of the thermal conductivity of single-wall carbon nanotubes

Temperature dependence of the thermal conductivity of single-wall carbon nanotubes The thermal conductivity of several single-wallcarbon nanotubes has been calculated over a temperaturerange of 100-500 K using molecular dynamics simulations withthe Tersoff-Brenner potential for C-C interactions. In all cases,starting from similar values at 100 K, the thermal conductivitiesshow a peaking behaviour before falling off at highertemperatures. The peak position shifts to higher temperaturesfor nanotubes with larger diameters and no significant dependenceon the tube chirality is observed. It is shown that thisphenomenon is due to the onset of Umklapp scattering, which shiftsto higher temperatures for nanotubes with larger diameters. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Nanotechnology IOP Publishing

Temperature dependence of the thermal conductivity of single-wall carbon nanotubes

Osman, Mohamed A; Srivastava, Deepak
Nanotechnology , Volume 12 (1) – Jan 8, 2001
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Copyright
Copyright © IOP Publishing Ltd
ISSN
0957-4484
eISSN
1361-6528
DOI
10.1088/0957-4484/12/1/305
Publisher site
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Abstract

The thermal conductivity of several single-wallcarbon nanotubes has been calculated over a temperaturerange of 100-500 K using molecular dynamics simulations withthe Tersoff-Brenner potential for C-C interactions. In all cases,starting from similar values at 100 K, the thermal conductivitiesshow a peaking behaviour before falling off at highertemperatures. The peak position shifts to higher temperaturesfor nanotubes with larger diameters and no significant dependenceon the tube chirality is observed. It is shown that thisphenomenon is due to the onset of Umklapp scattering, which shiftsto higher temperatures for nanotubes with larger diameters.

Journal

Nanotechnology – IOP Publishing

Published: Jan 8, 2001

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