Underwater superhydrophobiciy: Fundamentals and applications (INVITED)

Abstract eng:
Bioinspired superhydrophobic surfaces have attracted great interest from fundamental research to engineering applications. The functioning of superhydrophobicity, especially under a submerged environment, depends on a large area fraction of entrapped liquid—air interfaces, which, however, are subject to instabilities as induced by physical phenomena such as pressurization, air diffusion, fluid flow, and condensation. The wetting states strongly impact various pertinent properties and phenomena such as liquid slippage and cavitation. This work is dedicated to elucidating the underlying mechanisms of stability and wetting transition of underwater superhydrophobicity, introducing novel strategies for durable and robust design, and probing the applications in drag reduction and cavitation control.

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