Measuring the thermal conductivity of a single carbon nanotube

Motoo Fujii, Xing Zhang, Huaqing Xie, Hiroki Ago, Koji Takahashi, Tatsuya Ikuta, Hidekazu Abe, Tetsuo Shimizu

Research output: Contribution to journalArticle

674 Citations (Scopus)

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 2000W/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.

Original languageEnglish
Article number065502
JournalPhysical Review Letters
Volume95
Issue number6
DOIs
Publication statusPublished - Aug 5 2005

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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