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Liquid retention in micron and millimeter scale devices is important for maintaining stable interfaces in various processes including bimolecular separation, phase change heat transfer, and water desalination. There have been several studies of re-entrant geometries, and very few studies on retaining low surface tension liquids such as fluorocarbon-based dielectric liquids. Here, we study retention...
Abstract - High power density GaN HEMT technology can increase the capability of defense electronics systems with the reduction of CSWaP. However, thermal limitations have currently limited the inherent capabilities of this technology where transistor-level power densities that exceed 10 kW/cm2 are electrically feasible. This paper introduces the concept of an evaporative microcooling device utilizing...
Phase separation in two-phase microfluidic exchangers is a promising strategy for reducing the required pumping power. Past research has focused on using hydrophobic nanoporous structures in order to extract water vapor and retain liquid within the vapor-cooling device. This study focuses on characterizing the bursting pressure, the maximum Laplace pressure for liquid containment, of nanoporous alumina...
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