Anisotropic thermal applications of composites of ceramics and carbon nanotubes
AssigneeThe Regents of the University of California
InventorsGuodong Zhan, Joshua D. Kuntz, Amiya K. Mukherjee
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Abstract
Ceramic materials are converted to materials with anisotropic thermal properties by forming the ceramics into composites with carbon nanotubes dispersed therein and uniaxially compressing the composites in a direction in which a lower thermal conductivity is desired.
Claims16
In an application requiring the conduction of heat between an exothermic device and a heat sink surface, the improvement comprising interposing between said exothermic device and said heat sink surface a heat-spreading layer of a composite comprised of carbon nanotubes dispersed in a matrix of ceramic material, said composite having been uniaxially compressed in a direction transverse to said heat sink surface to provide said composite with a thermal diffusivity in said transverse direction that is lower than the thermal diffusivity in said transverse direction of a matrix of ceramic material lacking said carbon nanotubes.
Dependencies are inferred from the claim text.