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.
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Thermal Contact Resistance and Thermal Conductivity of a Carbon Nanofiber
Choongho Yu,
Choongho Yu
Department of Mechanical Engineering and Center for Nano and Molecular Science and Technology, Texas Materials Institute,
The University of Texas at Austin
, Austin, Texas 78712
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Sanjoy Saha,
Sanjoy Saha
Department of Mechanical Engineering and Center for Nano and Molecular Science and Technology, Texas Materials Institute,
The University of Texas at Austin
, Austin, Texas 78712
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Jianhua Zhou,
Jianhua Zhou
Department of Mechanical Engineering and Center for Nano and Molecular Science and Technology, Texas Materials Institute,
The University of Texas at Austin
, Austin, Texas 78712
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Li Shi,
Li Shi
Department of Mechanical Engineering and Center for Nano and Molecular Science and Technology, Texas Materials Institute,
The University of Texas at Austin
, Austin, Texas 78712
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Alan M. Cassell,
Alan M. Cassell
Center for Nanotechnology,
NASA Ames Research Center
, Moffett Field, CA 94035
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Brett A. Cruden,
Brett A. Cruden
Center for Nanotechnology,
NASA Ames Research Center
, Moffett Field, CA 94035
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Quoc Ngo,
Quoc Ngo
Center for Nanotechnology,
NASA Ames Research Center
, Moffett Field, CA 94035
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Jun Li
Jun Li
Center for Nanotechnology,
NASA Ames Research Center
, Moffett Field, CA 94035
Search for other works by this author on:
Choongho Yu
Department of Mechanical Engineering and Center for Nano and Molecular Science and Technology, Texas Materials Institute,
The University of Texas at Austin
, Austin, Texas 78712
Sanjoy Saha
Department of Mechanical Engineering and Center for Nano and Molecular Science and Technology, Texas Materials Institute,
The University of Texas at Austin
, Austin, Texas 78712
Jianhua Zhou
Department of Mechanical Engineering and Center for Nano and Molecular Science and Technology, Texas Materials Institute,
The University of Texas at Austin
, Austin, Texas 78712
Li Shi
Department of Mechanical Engineering and Center for Nano and Molecular Science and Technology, Texas Materials Institute,
The University of Texas at Austin
, Austin, Texas 78712
Alan M. Cassell
Center for Nanotechnology,
NASA Ames Research Center
, Moffett Field, CA 94035
Brett A. Cruden
Center for Nanotechnology,
NASA Ames Research Center
, Moffett Field, CA 94035
Quoc Ngo
Center for Nanotechnology,
NASA Ames Research Center
, Moffett Field, CA 94035
Jun Li
Center for Nanotechnology,
NASA Ames Research Center
, Moffett Field, CA 94035J. Heat Transfer. Mar 2006, 128(3): 234-239 (6 pages)
Published Online: September 18, 2005
Article history
Received:
December 20, 2004
Revised:
September 18, 2005
Citation
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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