Directed water shedding on high-aspect-ratio shape memory polymer micropillar arrays.

Chen, Chi-Mon; Yang, Shu · Adv Mater · 2014

basic_science · Level V

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Abstract

A reconfigurable, droplet-directing surface is developed based on high-aspect-ratio shape-memory polymer (SMP) pillars. The water droplet on the original or recovered SMP pillars can slide off the surface at a finite angle of inclination while being fully pinned on the deformed pillar array. This wettability contrast allows directed water shredding from the straight pillars to the deformed ones.