The effects of diameter and chirality on the thermal transport in free-standing and supported carbon-nanotubes
Date of this Version
6-4-2012Citation
Bo Qiu, Yan Wang, Qing Zhao and Xiulin Ruan. Appl. Phys. Lett. 100, 233105 (2012); http://dx.doi.org/10.1063/1.4725194
Abstract
We use molecular dynamics simulations to explore the lattice thermal transport in free-standing and supported single-wall carbon-nanotube (SWCNT) in comparison to that in graphene nanoribbon and graphene sheet. For free-standing SWCNT, the lattice thermal conductivity increases with diameter and approaches that of graphene, partly due to the curvature. Supported SWCNT thermal conductivity is reduced by 34%-41% compared to the free-standing case, which is less than that in supported graphene. Also, it shows an evident chirality dependence by varying about 10%, which we attribute to chirality-dependent interfacial phonon scattering. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4725194]
Discipline(s)
Nanoscience and Nanotechnology
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Comments
Copyright 2012 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Appl. Phys. Lett. 100, 233105 (2012) and may be found at http://dx.doi.org/10.1063/1.4725194. The following article has been submitted to/accepted by Applied Physics Letters. Copyright (2012) Bo Qiu, Yan Wang, Qing Zhao and Xiulin Ruan. This article is distributed under a Creative Commons Attribution 3.0 Unported License.