Abstract
We investigate thermal energy coupling between carbon nanotubes (CNTs) and with nonequilibrium molecular dynamics simulations. The phonon thermal boundary conductance per CNT unit length is found to scale proportionally with the strength of the van der Waals interaction , with CNT diameter , and as power law of temperature ( between 200 and 600 K). The thermal relaxation time of a single CNT on is independent of diameter, . With the standard set of parameters for a 1.7 nm diameter CNT at room temperature. Our results are comparable to, and explain the range of experimental values for CNT- thermal coupling from variations in diameter, temperature, or details of the surface interaction strength.
- Received 14 October 2009
DOI:https://doi.org/10.1103/PhysRevB.81.155408
©2010 American Physical Society