Thermal Conductivity of the Partly Covered Inner Tube in a Double-Walled Carbon Nanotube with Varied Coverage Ratios
PAN Rui-Qin1, XU Zi-Jian2**, DAI Cui-Xia1
1College of Science, Shanghai Institute of Technology, Shanghai 200235 2Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204
Abstract：We present a study of the thermal conductivity of a partly covered inner tube in a double-walled carbon nanotube with varied covering ratios using a non-equilibrium molecular dynamics method. Our results show that the thermal conductivity of the inner tube changes non-linearly and non-monotonically with the increasing coverage ratio, forming a V-shaped curve. Minimal conductivity occurs at the coverage ratio of 58%, with its value being 69% of the maximal conductivity, which appears in the full coverage case. We analyze three mutually competitive mechanisms that result in this thermal conductivity behavior with the assistance of a phonon spectrum calculation.
(Structure of fullerenes and related hollow and planar molecular structures)
引用本文:
. [J]. 中国物理快报, 2014, 31(1): 16501-016501.
PAN Rui-Qin, XU Zi-Jian, DAI Cui-Xia. Thermal Conductivity of the Partly Covered Inner Tube in a Double-Walled Carbon Nanotube with Varied Coverage Ratios. Chin. Phys. Lett., 2014, 31(1): 16501-016501.
2014, Vol. 31 
