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Slippery liquid-infused porous surfaces having improved stability

United States Patent

9,630,224
April 25, 2017
View the Complete Patent at the US Patent & Trademark Office
Methods and articles disclosed herein relate to liquid repellant surfaces having selective wetting and transport properties. An article having a repellant surface includes a substrate comprising surface features with re-entrant curvature and an immobilized layer of lubricating liquid wetting over the surface features. The surface features with re-entrant curvature can be designed to provide high repellency even after failure or removal of the immobilized layer of lubricating liquid under certain operating conditions.
Aizenberg; Joanna (Boston, MA), Vogel; Nicolas (Cambridge, MA)
President and Fellows of Harvard College (Cambridge, MA)
14/ 414,684
20150196940
July 12, 2013
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was made with government support under Award Number DE-AR0000326 awarded by Advanced Research Projects Agency-Energy (ARPA-E), U.S. Department of Energy and under Award Number FA9550-09-1-0669-DOD35CAP awarded by the U.S. Air Force. The government has certain rights in the invention.