Probing nanoscale solids at thermal extremes

被引：89

作者：

Begtrup, G. E. ^{[1
]}

Ray, K. G.

Kessler, B. M.

Yuzvinsky, T. D.

Garcia, H.

Zettl, Alex

机构：

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

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

[3] Ctr Integrated Nanomech Syst, Berkeley, CA 94720 USA

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 99卷 / 15期

关键词：

D O I：

10.1103/PhysRevLett.99.155901

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report a novel nanoscale thermal platform compatible with extreme temperature operation and real-time high-resolution transmission electron microscopy. Applied to multiwall carbon nanotubes, we find atomic-scale stability to 3200 K, demonstrating that carbon nanotubes are more robust than graphite or diamond. Even at these thermal extremes, nanotubes maintain 10% of their peak thermal conductivity and support electrical current densities similar to 2x10(8) A/cm(2). We also apply this platform to determine the diameter dependence of the melting temperature of gold nanocrystals down to three nanometers.

引用

页数：4

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