We report on the first measurement of the thermal conductivity of a suspended single layer graphene. The measurements were performed using a non-contact optical technique. The near room-temperature values of the thermal conductivity in the range ~ 4840 to 5300 W/mK were extracted for a single-layer graphene. The extremely high value of the thermal conductivity suggests that graphene can outperform carbon nanotubes in heat conduction.
@article{arxiv.0802.1367,
title = {Extremely High Thermal Conductivity of Graphene: Experimental Study},
author = {A. A. Balandin and S. Ghosh and W. Bao and I. Calizo and D. Teweldebrhan and F. Miao and C. N. Lau},
journal= {arXiv preprint arXiv:0802.1367},
year = {2008}
}