Abstract
Dependence of the thermal conductivity on the length of two armchairsingle-walled carbon nanotubes (SWNTs) is studied by the nonequilibriummolecular dynamics (MD) method with Brenner II potential. The thermalconductivities are calculated for (5, 5) and (7, 7) SWNTs with lengthsranging from 22 to 155 nm. The results show that the thermalconductivity of SWNTs is sensitive to the length and it does notconverge to a finite value when the tube length increases up to 155 nm,however it obeys a power law relation.
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