Thermal conductance of an individual single-wall carbon nanotube above room temperature

Eric Pop; David Mann; Qian Wang; Kenneth Goodson; Hongjie Dai

doi:10.1021/nl052145f

Thermal conductance of an individual single-wall carbon nanotube above room temperature

Nano Lett. 2006 Jan;6(1):96-100. doi: 10.1021/nl052145f.

Authors

Eric Pop¹, David Mann, Qian Wang, Kenneth Goodson, Hongjie Dai

Affiliation

¹ Department of Chemistry and Laboratory for Advanced Materials, Stanford University, California 94305, USA.

PMID: 16402794
DOI: 10.1021/nl052145f

Abstract

The thermal properties of a suspended metallic single-wall carbon nanotube (SWNT) are extracted from its high-bias (I-V) electrical characteristics over the 300-800 K temperature range, achieved by Joule self-heating. The thermal conductance is approximately 2.4 nW/K, and the thermal conductivity is nearly 3500 Wm(-1)K(-1) at room temperature for a SWNT of length 2.6 mum and diameter 1.7 nm. A subtle decrease in thermal conductivity steeper than 1/T is observed at the upper end of the temperature range, which is attributed to second-order three-phonon scattering between two acoustic modes and one optical mode. We discuss sources of uncertainty and propose a simple analytical model for the SWNT thermal conductivity including length and temperature dependence.