Superhydrophobic surfaces

Superhydrophobic surfaces are highly hydrophobic, i.e., extremely difficult to wet. The contact angles of a water droplet exceed 150° and the roll-off angle/contact angle hysteresisis less than 10°. This is also referred to as the Lotus effect, after the super hydrophobic leaves of the lotus plant. A droplet impacting on these kind of surfaces can fully rebound like an elastic ball, or pancake.

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