Thermal conductance and thermopower of an individual single-wall carbon nanotube

Choongho Yu; Li Shi; Zhen Yao; Deyu Li; Arunava Majumdar

doi:10.1021/nl051044e

Thermal conductance and thermopower of an individual single-wall carbon nanotube

Nano Lett. 2005 Sep;5(9):1842-6. doi: 10.1021/nl051044e.

Authors

Choongho Yu¹, Li Shi, Zhen Yao, Deyu Li, Arunava Majumdar

Affiliation

¹ Department of Mechanical Engineering and Physics, Center for Nano and Molecular Science and Technology, Texas Materials Institute, The University of Texas at Austin, Austin, Texas 78712, USA.

PMID: 16159235
DOI: 10.1021/nl051044e

Abstract

We have observed experimentally that the thermal conductance of a 2.76-microm-long individual suspended single-wall carbon nanotube (SWCNT) was very close to the calculated ballistic thermal conductance of a 1-nm-diameter SWCNT without showing signatures of phonon-phonon Umklapp scattering for temperatures between 110 and 300 K. Although the observed thermopower of the SWCNT can be attributed to a linear diffusion contribution and a constant phonon drag effect, there could be an additional contact effect.