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Thermal Conductance of an Individual Single-Wall Carbon Nanotube above Room Temperature

Eric Pop·David Mann·Qian Wang·Kenneth Goodson·Hongjie Dai
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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 W/m/K at room temperature for a SWNT of length 2.6 um 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.

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Eric Pop, David Mann, Qian Wang, Kenneth Goodson, Hongjie Dai. 2005-12-23. Thermal Conductance of an Individual Single-Wall Carbon Nanotube above Room Temperature. https://doi.org/10.1021/nl052145f

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