Diffusive-Ballistic Heat Conduction of Carbon Nanotubes and Nanographene Ribbons
نویسندگان
چکیده
Investigations of diffusive-ballistic heat conduction of finite-length single-walled carbon nanotubes and nanographene ribbons at room temperature have been carried out by using nonequilibrium molecular dynamics simulations. The length dependences of thermal conductivity reveal the variation of the balance between ballistic and diffusive heat conduction. For both systems, the profile indicates significant contribution of ballistic phonon transport even with the length of about a micrometer. Comparison of the length effects of single-walled carbon nanotubes and nanographene ribbons highlights roles of phonon dispersions and extent of phonon scattering on the diffusive-ballistic heat conduction.
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