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Title: Tuning thermal transport in nanotubes with topological defects
Authors: Wang, J.
Li, L.
Wang, J.-S. 
Issue Date: 29-Aug-2011
Citation: Wang, J., Li, L., Wang, J.-S. (2011-08-29). Tuning thermal transport in nanotubes with topological defects. Applied Physics Letters 99 (9) : -. ScholarBank@NUS Repository.
Abstract: Using the atomistic nonequilibrium Green's function, we find that thermal conductance of carbon nanotubes with presence of topological lattice imperfects is remarkably reduced, due to the strong Rayleigh scattering of high-frequency phonons. Phonon transmission across multiple defects behaves as a cascade scattering based with the random phase approximation. We elucidate that phonon scattering by structural defects is related to the spatial fluctuations of local vibrational density of states (LVDOS). An effective method of tuning thermal transport in low-dimensional systems through the modulation of LVDOS has been proposed. Our findings provide insights into experimentally controlling thermal transport in nanoscale devices. © 2011 American Institute of Physics.
Source Title: Applied Physics Letters
ISSN: 00036951
DOI: 10.1063/1.3631725
Appears in Collections:Staff Publications

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