Thermal interface material and method for manufacturing same

Details Thermal interface material and method for manufacturing same Thermal interface material and method for manufacturing same

2007-01-09

2007-01-09

McNeil, Jennifer C. (Department: 1775)

Stock material or miscellaneous articles

Self-sustaining carbon mass or layer with impregnant or...

C977S742000

Reexamination Certificate

active

11089864

ABSTRACT:
A thermal interface material (TIM) includes a macromolecular material and carbon nanotubes embedded in the macromolecular material. The TIM has a first surface and an opposite second surface. Each nanotube is open at opposite ends thereof, and extends from the first surface to the second surface. Two ends of each nanotube extend out from the two surfaces of the thermal interface material and form two bent ends. A method for manufacturing the TIM includes: (a) forming an array of carbon nanotubes on a substrate; (b) submerging the nanotubes in a liquid paraffin; (c) solidifying the liquid paraffin; (d) cutting the paraffin in a direction perpendicular to long axes of the nanotubes, whereby each nanotube is open; and (e) cutting the paraffin in the same direction according to a predetermined thickness to obtain the thermal interface material, whereby each nanotube is open.

REFERENCES:
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patent: 6407922 (2002-06-01), Eckblad et al.
patent: 2005/0061496 (2005-03-01), Matabayas, Jr.
Savas Berber, Young-Kyun Kwon, and David Tomanek; Unusually High Thermal Conductivity of Carbon Nanotubes; p. 4613-4616, vol. 84, Physical Review Letters 2000.
Shoushan Fan, Michael G. Chapline, Nathan R. Franklin, Thomas W. Tombler, Alan M. Cassell, and Hongjie Dai; Self-Oriented Regular Arrays of Carbon Nanotubes and Their Field Emission Properties; pp. 512-514, vol. 283, Science 1999.
Liang Liu and Shoushan Fan; Isotope Labeling of Carbon Nanotubes and Formation 12C-13C Nanotubes Junctions; pp. 11502-11503, vol. 123, J. Am. Chem. Soc. 2001.

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