Quantitative study of bundle size effect on thermal conductivity of single-walled carbon nanotubes

被引：31

作者：

Feng, Ya ^{[1
]}

Inoue, Taiki ^{[1
]}

An, Hua ^{[1
]}

Xiang, Rong ^{[1
]}

Chiashi, Shohei ^{[1
]}

Maruyama, Shigeo ^{[1
,2
]}

机构：

[1] Univ Tokyo, Dept Mech Engn, Tokyo 1138656, Japan

[2] Natl Inst Adv Ind Sci & Technol, Energy NanoEngn Lab, Tsukuba, Ibaraki 3058564, Japan

来源：

APPLIED PHYSICS LETTERS | 2018年 / 112卷 / 19期

关键词：

MOLECULAR-DYNAMICS SIMULATION; HEAT-CONDUCTION; LAYER GRAPHENE; TRANSPORT; NANOSTRUCTURES; TRANSISTORS; DENSITY;

D O I：

10.1063/1.5021696

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Compared with isolated single-walled carbon nanotubes (SWNTs), thermal conductivity is greatly impeded in SWNT bundles; however, the measurement of the bundle size effect is difficult. In this study, the number of SWNTs in a bundle was determined based on the transferred horizontally aligned SWNTs on a suspended micro-thermometer to quantitatively study the effect of the bundle size on thermal conductivity. Increasing the bundle size significantly degraded the thermal conductivity. For isolated SWNTs, thermal conductivity was approximately 5000 +/- 1000 W m(-1 )K(-1) at room temperature, three times larger than that of the four-SWNT bundle. The logarithmical deterioration of thermal conductivity resulting from the increased bundle size can be attributed to the increased scattering rate with neighboring SWNTs based on the kinetic theory. Published by AIP publishing.

引用

页数：5

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