Tuning thermal transport in nanotubes with topological defects
arXiv:1203.2817 · doi:10.1063/1.3631725
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
10 pages, 3 figures
References in corpus (12)
- Thermal transport measurements of individual multiwalled nanotubes
- Optimized Tersoff and Brenner empirical potential parameters for lattice dynamics and phonon thermal transport in carbon nanotubes and graphene
- Thermal Logic Gates: Computation with phonons
- Quantum thermal transport in nanostructures
- Nonequilibrium Green's Function Approach to Phonon Transport in Defective Carbon Nanotubes
- Ultralow Thermal Conductivity of Isotope-Doped Silicon Nanowires
- Nonequilibrium Green's function approach to mesoscopic thermal transport
- Carbon Nanotube Thermal Transport: Ballistic to Diffusive
- Nonequilibrium Green's function method for thermal transport in junctions
- When gel and glass meet: A mechanism for multistep relaxation
- Reducing the thermal conductivity of carbon nanotubes below the random isotope limit
- Single-mode phonon transmission in symmetry broken carbon nanotubes
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- Tunable Thermal Conduction in Graphane Nanoribbons
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