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Updated: Aug 14, 2026

Characterization of Thermal Transport in One-dimensional Solid Materials
Published on: January 26, 2014
Ballistic phonon thermal transport in multiwalled carbon nanotubes
H-Y Chiu1, V V Deshpande, H W Ch Postma
1Department of Applied Physics, California Institute of Technology, Pasadena, California 91125, USA.
Abstract:
We report electrical transport experiments, using the phenomenon of electrical breakdown to perform thermometry, that probe the thermal properties of individual multiwalled carbon nanotubes. Our results show that nanotubes can readily conduct heat by ballistic phonon propagation. We determine the thermal conductance quantum, the ultimate limit to thermal conductance for a single phonon channel, and find good agreement with theoretical calculations. Moreover, our results suggest a breakdown mechanism of thermally activated C-C bond breaking coupled with the electrical stress of carrying approximately 10(12) A/m2. We also demonstrate a current-driven self-heating technique to improve the conductance of nanotube devices dramatically.
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