Thermal transport at solid-fluid interfaces and the critical heat flux
Ji-Yong Park, Chang-Ki Min, David G. Cahill, and Steve Granick
Office of Naval Research prime, subcontract U. Virginia GG10919-127973

Management of extreme heat fluxes are a critical issue in high power microelectronics, solid-state lighting, and semiconductor power controls. Heat fluxes in such applications can approach 1000 W cm^-2, comparable to the heat transfer in a rocket nozzle. The limit to heat transfer between a solid and fluid is known as the critical heat flux; beyond the critical-heat flux, a continuous vapor layer forms at the interface that blocks the transfer of heat. We are using ultrafast optical techniques to study the basic microscopic mechanisms that control the critical-heat-flux and explore methods for modifying the physics and chemistry interface that will improve heat transfer from solids to fluids in two-phase flows.

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On 31 Mar 2008, 09:33.