title: Directed water shedding on high-aspect-ratio shape memory polymer micropillar arrays.
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.
authors.affiliation: Department of Materials Science and Engineering, University of Pennsylvania, 3231 Walnut Street, Philadelphia, PA, 19104, USA.
authors.forename: Chi-Mon
authors.initials: CM
authors.lastname: Chen
authors.forename: Shu
authors.initials: S
authors.lastname: Yang
keywords: deformation; high-aspect-ratio pillars; shape memory polymers; water sliding; wettability