Thermal Transport Measurements of Individual Multiwalled Carbon Nanotubes


P. Kim, Shi, L., Majumdar, A., and McEuen, P. L., “Thermal Transport Measurements of Individual Multiwalled Carbon Nanotubes,” Phy. Rev. Lett., vol. 87, pp. 215502:1-4, 2001.


The thermal conductivity and thermoelectric power of a single carbon nanotube were measured using a microfabricated suspended device. The observed thermal conductivity is more than 3000 W/K m at room temperature, which is 2 orders of magnitude higher than the estimation from previous experiments that used macroscopic mat samples. The temperature dependence of the thermal conductivity of nanotubes exhibits a peak at 320 K due to the onset of umklapp phonon scattering. The measured thermoelectric power shows linear temperature dependence with a value of 80μV/K at room temperature.