We have measured the thermal resistance of a -diameter carbon nanofiber before and after a platinum layer was deposited on the contacts between the nanofiber and the measurement device. The contact resistance was reduced by the platinum coating for about 9–13% of the total thermal resistance of the nanofiber sample before the platinum coating. At a temperature of , the axial thermal conductivity of the carbon nanofiber is about three times smaller than that of graphite fibers grown by pyrolysis of natural gas prior to high-temperature heat treatment, and increases with temperature in the temperature range between and . The phonon mean free path was found to be about and approximately temperature-independent. This feature and the absence of a peak in the thermal conductivity curve indicate that phonon-boundary and phonon-defect scattering dominate over phonon-phonon Umklapp scattering for the temperature range.
Thermal Contact Resistance and Thermal Conductivity of a Carbon Nanofiber
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Yu, C., Saha, S., Zhou, J., Shi, L., Cassell, A. M., Cruden, B. A., Ngo, Q., and Li, J. (September 18, 2005). "Thermal Contact Resistance and Thermal Conductivity of a Carbon Nanofiber." ASME. J. Heat Transfer. March 2006; 128(3): 234–239. https://doi.org/10.1115/1.2150833
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