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Next-generation thermal management applications will require passive heat spreading at a lower thermal resistance, higher dryout tolerance, and with thinner profile devices than current vapor chambers. Such performance improvements may be achieved by augmenting evaporation and boiling heat transfer via patterning the internal wick or nanostructuring the wick surface in the region of heat input. Test...
The performance of passive phase-change cooling devices, such as vapor chambers or heat pipes, may be significantly enhanced by exploiting the superior thermal properties of carbon nanotube (CNT) arrays. The potential for large reductions in overall package resistance with the use of high-conductivity wick materials enhanced with CNT nanostructures is investigated. While such nanostructured wicks...
Nanostructured materials, such as those enhanced with carbon nanotube (CNT) arrays, offer great promise for use as wicks in heat pipes and other passive phase-change cooling applications. While such nanostructures feature very small pore sizes which support high capillary pressures, it is shown that the low permeability of these dense arrays prevents their use as the sole fluid transport mechanism...
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