Tuesday, August 08, 2006

US Patent 7086451 - Nanotubes Grown On Heat Sink


Along with excellent mechanical and electrical characteristics, carbon nanotubes are known for excellent thermal conductivity. However, using randomly oriented nanotubes is not optimum for thermal conductivity. This patent instead proposes the growth of parallel nanotubes oriented perpendicular to the base of a heat sink to make the conduction from a heat source attached to the base uniform. Claim 1 recites:

1. A heat sink comprising: a base; a plurality of fins extending from one surface of the base; and a plurality of carbon nanotubes grown on and thereby in contact with an opposite surface of the base; wherein the carbon nanotubes are substantially parallel to each other and substantially perpendicular to the base.