Abstract: Methods and apparatus for a heat spreader including a vapor chamber, a fluid in the vapor chamber, a wick disposed in the vapor chamber, the wick comprising a metal wick structure, and a coating on wick comprising carbon nanotubes for promoting incipient boiling of the fluid.

Abstract: A cold plate system including, in one embodiment, first and second flow paths extending from a common inlet to a common outlet, wherein the first and second flow paths enable two-phase coolant flow under pressure through micro-channels for cooling heat loads on the cold plate system, first and second orifices disposed in the first flow path on an inlet side of the first flow path, and a third orifice spaced from a fourth orifice, the third and fourth orifices disposed in the second flow path on an inlet side of the second flow path, wherein the first and second orifices in the first flow path and the third and fourth orifices in the second flow path minimize a difference in mass flow rate between the first and second flow paths when the first and second flow paths are exposed to different heat loads.

Abstract: A structure, comprising: a semiconductor structure having an electrically and thermally conductive layer disposed on one surface of the semiconductor structure; an electrically and thermally conductive heat sink; a electrically and thermally conductive carrier layer; a plurality of electrically and thermally nano-tubes, a first portion of the plurality of nano-tubes having proximal ends disposed on a first surface of the carrier layer and a second portion of the plurality of nano-tubes having proximal ends disposed on an opposite surface of the carrier layer; and a plurality of electrically and thermally conductive heat conductive tips disposed on distal ends of the plurality of nano-tubes, the plurality of heat conductive tips on the first portion of the plurality of nano-tubes being attached to the conductive layer, the plurality of heat conductive tips on the second portion of the plurality of nano-tubes being attached to the heat sink.

Abstract: A semiconductor structure having: an electrically and thermally conductive layer disposed on one surface of the semiconductor structure; an electrically and thermally conductive heat sink; a electrically and thermally conductive carrier layer; a plurality of electrically and thermally nano-tubes, a first portion of the plurality of nano-tubes having proximal ends disposed on a first surface of the carrier layer and a second portion of the plurality of nano-tubes having proximal ends disposed on an opposite surface of the carrier layer; and a plurality of electrically and thermally conductive heat conductive tips disposed on distal ends of the plurality of nano-tubes, the plurality of heat conductive tips on the first portion of the plurality of nano-tubes being attached to the conductive layer, the plurality of heat conductive tips on the second portion of the plurality of nano-tubes being attached to the heat sink.

Abstract: A cold chassis and method of making a cold chassis for electronic modules featuring the fabrication of individual brazed cooling ribs each including microchannels along the length thereof and a peripheral flange. A set of adjacent ribs are secured together and assembled onto at least one face of a frame member. The rib flanges are sealed (e.g., friction stir welded) with respect to the frame member.

Abstract: A structure, comprising: a semiconductor structure having an electrically and thermally conductive layer disposed on one surface of the semiconductor structure; an electrically and thermally conductive heat sink; a electrically and thermally conductive carrier layer; a plurality of electrically and thermally nano-tubes, a first portion of the plurality of nano-tubes having proximal ends disposed on a first surface of the carrier layer and a second portion of the plurality of nano-tubes having proximal ends disposed on an opposite surface of the carrier layer; and a plurality of electrically and thermally conductive heat conductive tips disposed on distal ends of the plurality of nano-tubes, the plurality of heat conductive tips on the first portion of the plurality of nano-tubes being attached to the conductive layer, the plurality of heat conductive tips on the second portion of the plurality of nano-tubes being attached to the heat sink.

Abstract: A high performance compact heat exchanger includes a base plate with evaporator channels for cooling a heat source adjacent to the base plate. A condenser is connected to the base plate and includes fins with channels therein for the coolant. A pump delivers the coolant to the evaporator channels of the base plate after passing through the fins of the condenser.

Abstract: A radar transmit and receive integrated microwave module with conductively cooled condenser side rails and one or more vacuum brazed fluid distribution manifold cold plates in fluid communication with the side rails. There are one or more transmit and receive modules on a cold plate. Each module includes a coolant input and a coolant output. One or more gallium nitride monolithic microwave integrated circuits are within each transmit and receive module and each include a micro heat exchanger in fluid communication with the coolant input and the coolant output of the transmit and receive module to directly cool the gallium nitride monolithic microwave integrated circuit.

Abstract: A radar transmit and receive integrated microwave module with conductively cooled condenser side rails and one or more vacuum brazed fluid distribution manifold cold plates in fluid communication with the side rails. There are one or more transmit and receive modules on a cold plate. Each module includes a coolant input and a coolant output. One or more gallium nitride monolithic microwave integrated circuits are within each transmit and receive module and each include a micro heat exchanger in fluid communication with the coolant input and the coolant output of the transmit and receive module to directly cool the gallium nitride monolithic microwave integrated circuit.