An exploratory thermal interface structure, made of vertically oriented carbon nanotubes directly grown on a silicon substrate, has been thermally characterized using a 3-omega method. The effective thermal conductivities of the carbon nanotubes (CNT) sample, including the effects of voids, are found to be to in the temperature range of to , one order higher than that of the best thermal greases or phase change materials. This result suggests that the vertically oriented CNTs potentially can be a promising next-generation thermal interface solution. However, fairly large thermal resistances were observed at the interfaces between the CNT samples and the experimental contact. Minimizing these contact resistances is critical for the application of these materials.
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November 2006
This article was originally published in
Journal of Heat Transfer
Research Papers
3-Omega Measurements of Vertically Oriented Carbon Nanotubes on Silicon
X. Jack Hu,
X. Jack Hu
Mechanical Engineering Department,
e-mail: jack.hu@intel.com
Stanford Univeristy
, 440 Escondido Mall, Stanford, CA 94305
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Antonio A. Padilla,
Antonio A. Padilla
Mechanical Engineering Department,
Stanford Univeristy
, 440 Escondido Mall, Stanford, CA 94305
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Jun Xu,
Jun Xu
School of Mechanical Engineering and Birck Nanotechnology Center,
Purdue University
, 585 Purdue Mall, West Lafayette, IN 47907
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Timothy S. Fisher,
Timothy S. Fisher
School of Mechanical Engineering and Birck Nanotechnology Center,
Purdue University
, 585 Purdue Mall, West Lafayette, IN 47907
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Kenneth E. Goodson
Kenneth E. Goodson
Mechanical Engineering Department,
Stanford University
, 440 Escondido Mall, Stanford, CA 94305
Search for other works by this author on:
X. Jack Hu
Mechanical Engineering Department,
Stanford Univeristy
, 440 Escondido Mall, Stanford, CA 94305e-mail: jack.hu@intel.com
Antonio A. Padilla
Mechanical Engineering Department,
Stanford Univeristy
, 440 Escondido Mall, Stanford, CA 94305
Jun Xu
School of Mechanical Engineering and Birck Nanotechnology Center,
Purdue University
, 585 Purdue Mall, West Lafayette, IN 47907
Timothy S. Fisher
School of Mechanical Engineering and Birck Nanotechnology Center,
Purdue University
, 585 Purdue Mall, West Lafayette, IN 47907
Kenneth E. Goodson
Mechanical Engineering Department,
Stanford University
, 440 Escondido Mall, Stanford, CA 94305J. Heat Transfer. Nov 2006, 128(11): 1109-1113 (5 pages)
Published Online: November 4, 2005
Article history
Received:
February 24, 2005
Revised:
November 4, 2005
Citation
Hu, X. J., Padilla, A. A., Xu, J., Fisher, T. S., and Goodson, K. E. (November 4, 2005). "3-Omega Measurements of Vertically Oriented Carbon Nanotubes on Silicon." ASME. J. Heat Transfer. November 2006; 128(11): 1109–1113. https://doi.org/10.1115/1.2352778
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