title: Superhydrophobic behavior of a perfluoropolyether lotus-leaf-like topography.
abstract: We demonstrate the fabrication of 2-D arrays of nanopillars made from perfluoropolyether derivatives using a porous anodic aluminum oxide membrane as a template. Pretexturing the aluminum prior to anodization enables one to engineer multiple morphological length scales and thereby synthesize a lotus-leaf-like topography. Both nanopillars on a flat surface and on a lotus-leaf-like topology exhibit superhydrophobicity, low contact angle hysteresis, and self-cleaning.
authors.affiliation: Curriculum in Applied and Materials Sciences and Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, USA.
authors.forename: Lei
authors.initials: L
authors.lastname: Zhang
authors.forename: Zhilian
authors.initials: Z
authors.lastname: Zhou
authors.forename: Bin
authors.initials: B
authors.lastname: Cheng
authors.forename: Joseph M
authors.initials: JM
authors.lastname: Desimone
authors.forename: Edward T
authors.initials: ET
authors.lastname: Samulski
mesh_terms: D000537:Aluminum Oxide / Q000737:chemistry*; D004987:Ethers / Q000737:chemistry*; D005466:Fluorocarbons / Q000737:chemistry*; D057927:Hydrophobic and Hydrophilic Interactions; D008567:Membranes, Artificial; D008855:Microscopy, Electron, Scanning; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure
chemical_list: D004987:Ethers; D005466:Fluorocarbons; D008567:Membranes, Artificial; C078113:perfluoropolyether; D000537:Aluminum Oxide