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AssigneeNanotek Instruments, Inc.
InventorsAruna Zhamu, Mingchao Wang, Wei Xiong, Bor Z. Jang, Lin Yi-jun
Estimating the term…
A unitary graphene-based integrated heat sink comprising a heat collection member (base) and at least one heat dissipation member (e.g. fins) integral to the baser, wherein the base is configured to be in thermal contact with a heat source, collects heat therefrom, and dissipates heat through the fins. The unitary graphene material is obtained from heat-treating a graphene oxide gel at a temperature higher than 100° C., 500° C., 1,250° C., or 2,000° C., and contains chemically bonded graphene molecules having inter-graphene distance of 0.3354-0.4 nm (preferably <0.337 nm). The unitary graphene material is a graphene single crystal, a poly-crystal with incomplete grain boundaries, or a poly-crystal having large grain sizes (e.g. >mm or cm), exhibiting a degree of graphitization preferably from 1% to 100% and a Mosaic spread value less than 0.7 (preferably no greater than 0.4). The finned heat sink may also be made from a filler-reinforced graphene matrix composite.
An integrated heat sink comprising a unitary graphene material article composed of a heat collection member and at least one heat dissipation member integral to said heat collection member, wherein the heat collection member is configured to be in thermal contact with a heat source, collects heat from said heat source, and dissipates heat through the at least one heat dissipation member, and further wherein the unitary graphene material is obtained from heat-treating a graphene oxide gel at a heat treatment temperature higher than 100° C. and contains chemically bonded graphene molecules or chemically merged graphene planes having an inter-graphene spacing no greater than 0.40 nm.
An integrated heat sink comprising a unitary graphene material article shaped so as to provide a heat collection surface and at least one heat dissipation surface connected or integral to said heat collection surface, wherein the heat collection surface is configured to be in thermal contact with a heat source, collects heat from said heat source, and dissipates heat through the at least one heat dissipation surface, and further wherein the unitary graphene material is obtained from heat-treating a graphene oxide gel at a heat treatment temperature higher than 500° C. and contains chemically bonded graphene molecules or chemically merged graphene planes having an inter-graphene spacing no greater than 0.40 nm.
Dependencies are inferred from the claim text.