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Phys Rev Lett. 2005 Aug 5;95(6):065502. Epub 2005 Aug 2.

Measuring the thermal conductivity of a single carbon nanotube.

Fujii M1, Zhang X, Xie H, Ago H, Takahashi K, Ikuta T, Abe H, Shimizu T.

Abstract
Although the thermal properties of millimeter-sized carbon nanotube mats and packed carbon nanofibers have been readily measured, measurements for a single nanotube are extremely difficult. Here, we report a novel method that can reliably measure the thermal conductivity of a single carbon nanotube using a suspended sample-attached T-type nanosensor. Our experimental results show that the thermal conductivity of a carbon nanotube at room temperature increases as its diameter decreases, and exceeds 2000 W/mK for a diameter of 9.8 nm. The temperature dependence of the thermal conductivity for a carbon nanotube with a diameter of 16.1 nm appears to have an asymptote near 320 K. The present method is, in principle, applicable to any kind of a single nanofiber, nanowire, and even single-walled carbon nanotube.
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Thermal diffusivity and conductivity of multiwalled carbon nanotube arrays
Huaqing Xie , An Cai, Xinwei Wang
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