TITLE

Negative pressures in nanoporous membranes for thin film evaporation

AUTHOR(S)
Xiao, Rong; Maroo, Shalabh C.; Wang, Evelyn N.
PUB. DATE
March 2013
SOURCE
Applied Physics Letters;3/25/2013, Vol. 102 Issue 12, p123103
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We present a nanoporous membrane-based approach, which decouples the capillary pressure from the viscous resistance, to achieve high driving pressures and efficient liquid delivery for thin film evaporation. By using alumina membranes with ≈150 nm pore diameters, absolute liquid pressures as low as -300 kPa were achieved using isopropyl alcohol, while dissipating maximum interfacial heat fluxes of ≈96 W/cm2. Design guidelines are provided to achieve higher interfacial heat fluxes with reduced membrane thicknesses. This work shows a promising approach to address thermal management needs for next generation electronic devices.
ACCESSION #
86446857

 

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