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- W2075308340 abstract "The propagation of heat pulses in single-wall carbon nanotubes has been investigated using molecular dynamics simulations. It is found that heat pulses of picosecond duration in (10,0), (7,0), and (5,5) single-wall carbon nanotubes induce several wave packets that propagate at different propagation speeds. The leading wave packets move at the speed of sound corresponding to that of longitudinal acoustic (LA) phonons, followed by wave packets with speeds corresponding to twisted phonon mode (TW), second sound wave, and diffusive components. The waves corresponding to ballistic LA and TW phonon modes in (10,0) and (7,0) zig-zag nanotubes carry more heat energy than in (5,5) armchair nanotubes. The energy carried by wave packets corresponding to the speed of second sound waves is larger than those carried by TW and LA modes. These are used to explain the higher thermal conductivity of zig-zag nanotubes as compared to armchair nanotubes reported recently." @default.
- W2075308340 created "2016-06-24" @default.
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- W2075308340 date "2005-09-09" @default.
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- W2075308340 title "Molecular dynamics simulation of heat pulse propagation in single-wall carbon nanotubes" @default.
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- W2075308340 doi "https://doi.org/10.1103/physrevb.72.125413" @default.
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