Thermal properties of single-walled carbon nanotube crystal

doi:10.1088/1674-1056/20/9/096101

摘要/Abstract

摘要： In this work, the thermal properties of a single-walled carbon nanotube (SWCNT) crystal are studied. The thermal conductivity of the SWCNT crystal is found to have a linear dependence on temperature in the temperature range from 1.9 K to 100.0 K. In addition, a peak (658 W/mK) is found at a temperature of about 100.0 K. The thermal conductivity decreases gradually to a value of 480 W/mK and keeps almost a constant in the temperature range from 100.0 K to 300.0 K. Meanwhile, the specific heat shows an obvious linear relationship with temperature in the temperature range from 1.9 K to 300.0 K. We discuss the possible mechanisms for these unique thermal properties of the single-walled carbon nanotube crystal.

关键词: single-walled carbon nanotube, SWCNT crystal, thermal conductivity, specific heat

Abstract: In this work, the thermal properties of a single-walled carbon nanotube (SWCNT) crystal are studied. The thermal conductivity of the SWCNT crystal is found to have a linear dependence on temperature in the temperature range from 1.9 K to 100.0 K. In addition, a peak (658 W/mK) is found at a temperature of about 100.0 K. The thermal conductivity decreases gradually to a value of 480 W/mK and keeps almost a constant in the temperature range from 100.0 K to 300.0 K. Meanwhile, the specific heat shows an obvious linear relationship with temperature in the temperature range from 1.9 K to 300.0 K. We discuss the possible mechanisms for these unique thermal properties of the single-walled carbon nanotube crystal.

Key words: single-walled carbon nanotube, SWCNT crystal, thermal conductivity, specific heat

中图分类号: (Structure of carbon nanotubes, boron nanotubes, and other related systems)

61.48.De

78.67.De (Quantum wells) 81.05.U- (Carbon/carbon-based materials)

胡丽君, 刘基, 刘政, 邱彩玉, 周海青, 孙连峰. Thermal properties of single-walled carbon nanotube crystal[J]. 中国物理B, 2011, 20(9): 96101-096101.

Hu Li-Jun(胡丽君), Liu Ji(刘基), Liu Zheng(刘政), Qiu Cai-Yu(邱彩玉), Zhou Hai-Qing(周海青), and Sun Lian-Feng(孙连峰) . Thermal properties of single-walled carbon nanotube crystal[J]. Chin. Phys. B, 2011, 20(9): 96101-096101.

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