Hovering spreading rebound on porous superhydrophobic surface with active air plastron for rapid drop detachment

Abstract

Hovering spreading rebound on porous superhydrophobic surfaces with active air plastron achieves an unprecedentedly low contact time of ∼1.2 ms for impacting water drops, which is 68% smaller than that for pancake rebound.

Fabrication of a sustainable superhydrophobic surface of Ag-NPs@SA on copper alloy for corrosion resistance, photocatalysis, and simulated distribution of Ag atoms

“…The superhydrophobic surface has engaged the attention of researchers in recent decades due to its numerous applications, such as corrosion resistance, 1 self-cleaning, 2 anti-icing, 3 anti-fogging, 4 oil/water separation, 5 anti-bacterial, 6 catalytic reduction, 7 drag-reduction, 8 anti-biofouling, 9 super buoyancy, 10 photodegradation, 11 drug delivery and so on. 12 A surface with a static water contact angle greater than 150° and a sliding angle less than 10° is said to be a superhydrophobic surface (SHS).…”

Aerodynamic Super-Repellent Surfaces

“…Apart from providing air pockets by introducing a physical structure, an alternative strategy for obtaining the nonwetting surface property is to generate an air cushion at the solid–liquid interface, which is capable of preventing the incoming liquid drops from contacting the surface fundamentally [ 26 – 28 ]. The well-known Leidenfrost effect induced by overheating enables volatile liquids to levitate above a vapor cushion [ 29 – 32 ].…”