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Fabrication of biomimetic surfaces with enhanced wetting properties for next sensing devices.
Controlling the motion of liquid drops in contact with a solid surface has broad technological implications in many different areas ranging from textiles to microfluidics, from biosensors to heat exchangers. The wettability of a surface is determined by specifying the apparent contact angle and contact angle hysteresis (CAH) that depend on the surface chemistry and morphology. The presence of chemical inhomogeneity and morphological disorder usually increases CAH. Low CAH determines high drop mobility, while high CAH favors drop pinning. In this presentation we outline the main results obtained in the past few years to produce robust omniphobic surfaces inspired by living systems, highlighting some of the most promising applications of these novel functional surfaces, in particular for next sensing devices.