Membrane-Based Two Phase Heat Sinks for High Heat Flux Electronics and Lasers

Thermal management is the current bottleneck in advancement of high-power integrated circuits (ICs), and phase change heat sinks are a promising solution. With unique structural configuration consisting membrane positioned above heater surface, membrane-based (MHSs) have thus far attained fluxes up to 2 kW/cm 2 transfer coefficient (HTC) 1.8 MW/ $\text{m}^{2}~\cdot $ K using water as working fluid. This work reports latest progress performance evaluation MHS for high flux thermal management. implemented conjunction with low surface tension liquid rapidly expel bubbles from heated reach critical (CHF) 340 W/cm HTC 120 kW/ K. A parametric comparison shows that efficiency, defined ratio cooling capacity pumping power consumption, prototypical devices exceeds values reported hitherto literature by more than two orders magnitude. Our results indicate coupled surfaces higher conductivity membranes permeability, could be solution needs electronics lasers.