Relation between reversible electrowetting and impacting/bouncing drop test on superhydrophobic surfaces
Résumé
The wetting properties of liquid droplets behavior on superhydrophobic surfaces is still a challenging issue. Functional
surfaces with controlled wetting properties, which can respond to external stimuli, have attracted huge interest of the
scientific community due to their wide range of potential applications, including microfluidic devices, controllable drug
delivery and self cleaning surfaces. The specific design of our superhydrophobic nanotextured surfaces leads to a
unique reversible electrowetting. In this communication we show that this reversibility of EW is related to robustness to
impalement, by comparing EW experiments to drop impact experiments on surfaces designed from a carpet of
entangled or straight silicon nanowires (NWs).