title: Spatially Selective Nucleation and Growth of Water Droplets on Hierarchically Patterned Polymer Surfaces.
abstract: On a hierarchical polymer surface consisting of microposts and nanopillar arrays, water droplets are nucleated and grown selectively in the grooves between the microposts as the vapor pressure increases, whereas water droplets are randomly nucleated on a flat surface and surfaces consisting of microposts or nanopillars only.
authors.affiliation: Department of Materials Science and Engineering, University of Pennsylvania, 3231 Walnut Street, Philadelphia, PA, 19104, USA.
authors.forename: Younghyun
authors.initials: Y
authors.lastname: Cho
authors.affiliation: Department of Chemical and Biomolecular Engineering, University of Pennsylvania, 220 South 33rd Street, Philadelphia, PA, 19104, USA.
authors.forename: Tae Soup
authors.initials: TS
authors.lastname: Shim
authors.affiliation: Department of Materials Science and Engineering, University of Pennsylvania, 3231 Walnut Street, Philadelphia, PA, 19104, USA.
authors.forename: Shu
authors.initials: S
authors.lastname: Yang
mesh_terms: D000537:Aluminum Oxide / Q000737:chemistry; D004566:Electrodes; D008567:Membranes, Artificial; D036103:Nanotechnology / Q000379:methods*; D011108:Polymers / Q000737:chemistry*; D014867:Water / Q000737:chemistry*; D017155:Wettability
chemical_list: D008567:Membranes, Artificial; D011108:Polymers; D014867:Water; D000537:Aluminum Oxide
keywords: anodized aluminum oxide; hierarchical structure; preferential wetting; water droplet nucleation; wettability pattern