Breakdown of Fourier's law in nanotube thermal conductors

被引：443

作者：

Chang, C. W. ^{[1
,2
]}

Okawa, D. ^{[1
]}

Garcia, H. ^{[1
]}

Majumdar, A. ^{[2
,3
,4
,5
]}

Zettl, A. ^{[1
,2
,5
]}

机构：

[1] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

[2] Univ Calif Berkeley, Ctr Integrated Nanomech Syst, Berkeley, CA 94720 USA

[3] Univ Calif Berkeley, Dept Mech Engn, Berkeley, CA 94720 USA

[4] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA

[5] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 07期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.101.075903

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present experimental evidence that the room temperature thermal conductivity (kappa) of individual multiwalled carbon and boron-nitride nanotubes does not obey Fourier's empirical law of thermal conduction. Because of isotopic disorder, kappa's of carbon nanotubes and boron-nitride nanotubes show different length dependence behavior. Moreover, for these systems we find that Fourier's law is violated even when the phonon mean free path is much shorter than the sample length.

引用

页数：4

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