Ultrahydrophobicity
Material property of extreme resistance to wetting / From Wikipedia, the free encyclopedia
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In chemistry and materials science, ultrahydrophobic (or superhydrophobic) surfaces are highly hydrophobic, i.e., extremely difficult to wet. The contact angles of a water droplet on an ultrahydrophobic material exceed 150°.[1] This is also referred to as the lotus effect, after the superhydrophobic leaves of the lotus plant. A droplet striking these kinds of surfaces can fully rebound like an elastic ball.[2] Interactions of bouncing drops can be further reduced using special superhydrophobic surfaces that promote symmetry breaking,[3][4][5][6] pancake bouncing[7] or waterbowl bouncing.[8][9]