Thermal properties of single-walled carbon nanotube crystal

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 temperat...

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Published inChinese physics B Vol. 20; no. 9; pp. 307 - 311
Main Author 胡丽君 刘基 刘政 邱彩玉 周海青 孙连峰
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.09.2011
Subjects
单壁碳纳米管
可能机制
晶体
比热
温度范围
热导率
热性能
线性关系
Online AccessGet full text
ISSN1674-1056
2058-3834
DOI10.1088/1674-1056/20/9/096101

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Summary: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.
Bibliography: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.
single-walled carbon nanotube, SWCNT crystal, thermal conductivity, specific heat
11-5639/O4
Hu Li-Jun Liu Ji Liu Zheng Qiu Cai-Yu Zhou Hai-Qing and Sun Lian-Feng a） National Center for Nanoscience and Technology, Beijing 100190, China b） Graduate University of Chinese Academy of Sciences, Beijing 100049, China
ISSN:1674-1056
2058-3834
DOI:10.1088/1674-1056/20/9/096101