Length Dependence of Thermal Conductivity of Single-Walled Carbon Nanotubes
PAN Rui-Qin 1,2, XU Zi-Jian 1,2, ZHU Zhi-Yuan1
1Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 2018002Graduate School of the Chinese Academy of Sciences, Beijing 100049
Length Dependence of Thermal Conductivity of Single-Walled Carbon Nanotubes
PAN Rui-Qin 1,2;XU Zi-Jian 1,2;ZHU Zhi-Yuan1
1Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 2018002Graduate School of the Chinese Academy of Sciences, Beijing 100049
摘要Dependence of the thermal conductivity on the length of two armchair single-walled carbon nanotubes (SWNTs) is studied by the nonequilibrium molecular dynamics (MD) method with Brenner II potential. The thermal conductivities are calculated for (5, 5) and (7, 7) SWNTs with lengths ranging from 22 to 155nm. The results show that the thermal conductivity of SWNTs is sensitive to the length and it does not converge to a finite value when the tube length increases up to 155nm, however it obeys a power law relation.
Abstract：Dependence of the thermal conductivity on the length of two armchair single-walled carbon nanotubes (SWNTs) is studied by the nonequilibrium molecular dynamics (MD) method with Brenner II potential. The thermal conductivities are calculated for (5, 5) and (7, 7) SWNTs with lengths ranging from 22 to 155nm. The results show that the thermal conductivity of SWNTs is sensitive to the length and it does not converge to a finite value when the tube length increases up to 155nm, however it obeys a power law relation.
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