Unusually High Thermal Conductivity of Carbon Nanotubes

Abstract

Combining equilibrium and non-equilibrium molecular dynamics simulations with accurate carbon potentials, we determine the thermal conductivity $\lambda$ of carbon nanotubes and its dependence on temperature. Our results suggest an unusually high value $\lambda \approx 6,600$~W/m$\cdot$K for an isolated (10,10) nanotube at room temperature, comparable to the thermal conductivity of a hypothetical isolated graphene monolayer or diamond. Our results suggest that these high values of $\lambda$ are associated with the large phonon mean free paths in these systems; substantially lower values are predicted and observed for the basal plane of bulk graphite.

4 pages 3 figures (5 postscript files), submitted for publication

References in corpus (2)

• Thermal transport measurements of individual multiwalled nanotubes
• Molecular dynamics calculation of the thermal conductivity of vitreous silica

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