title: Super-hydrophobic, highly adhesive, polydimethylsiloxane (PDMS) surfaces.
abstract: Super-hydrophobic surfaces have been fabricated by casting polydimethylsiloxane (PDMS) on a textured substrate of known surface topography, and were characterized using contact angle, atomic force microscopy, surface free energy calculations, and adhesion measurements. The resulting PDMS has a micro-textured surface with a static contact angle of 153.5° and a hysteresis of 27° when using de-ionized water. Unlike many super-hydrophobic materials, the textured PDMS is highly adhesive, allowing water drops as large as 25.0 μL to be inverted. This high adhesion, super-hydrophobic behavior is an illustration of the "petal effect". This rapid, reproducible technique has promising applications in transport and analysis of microvolume samples.
authors: Worcester Polytechnic Institute, Chemistry and Biochemistry Department, 100 Institute Road, Worcester, MA 016091, USA.
authors: Morgan M
authors: MM
authors: Stanton
authors: Robert E
authors: RE
authors: Ducker
authors: John C
authors: JC
authors: MacDonald
authors: Christopher R
authors: CR
authors: Lambert
authors: W Grant
authors: WG
authors: McGimpsey
mesh_terms: D000269:Adhesives / Q000737:chemistry*; D004129:Dimethylpolysiloxanes / Q000737:chemistry*; D057927:Hydrophobic and Hydrophilic Interactions; D018625:Microscopy, Atomic Force; D013499:Surface Properties
chemical_list: D000269:Adhesives; D004129:Dimethylpolysiloxanes