Heat Transport in Double-Bond Linear Chains of Fullerenes
WEI Liang, XU Zhi-Cheng, ZHENG Dong-Qin, ZHANG Wei, ZHONG Wei-Rong**
Department of Physics and Siyuan Laboratory, Jinan University, Guangzhou 510632
Abstract :Heat transport in one kind of double-bond linear chains of fullerenes (C60 's) is investigated by the classical nonequilibrium molecular dynamics method. It is found that the negative differential thermal resistance (NDTR) is more likely to occur at larger temperature difference and shorter length. In addition, with the increase of the length, the thermal conductivity of the chains increases, and NDTR region shrinks and vanishes in the end. The temperature profiles reveal that a large temperature jump exists at a high-temperature boundary of the chains when NDTR occurs. These results may be helpful for designing thermal devices where low-dimensional C60 polymers can be used.
收稿日期: 2015-02-03
出版日期: 2015-07-30
:
65.80.-g
(Thermal properties of small particles, nanocrystals, nanotubes, and other related systems)
63.22.-m
(Phonons or vibrational states in low-dimensional structures and nanoscale materials)
61.48.-c
(Structure of fullerenes and related hollow and planar molecular structures)
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