Journal
REPORTS ON PROGRESS IN PHYSICS
Volume 68, Issue 11, Pages 2495-2532Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0034-4885/68/11/R01
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While the behaviour of large amounts of liquid is dictated by gravity, surface forces become dominant at small scales. They have for example the remarkable ability to make droplets stick to their substrates (even if they are inclined), which is a practical issue in many cases (windshields, window panes, greenhouses, or microfluidic devices). Here we describe how this problem can be overcome with super-hydrophobic materials. These materials are often developed thanks to micro-textures, which decorate a solid surface, and we describe the way such textures modify the wettability of that solid. We conclude by showing the unusual dynamics of drops in a super-hydrophobic situation.
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