Plasma Processes and Polymers · 2007 · 103 citations · 38 references
EngineeringMaterials EngineeringMaterials ScienceNanotechnologySurface EngineeringSurface ScienceCoatingsPlasma Surface TreatmentPlasma-surface InteractionsSurface CoatingsSurface HydrophobicitySurface TexturingHydrophobicityPlasma Surface TexturingPlasma TreatmentPlasma-treated Surface WettabilitySurface AreaSurface Area EnhancementWettingWetting Properties
Abstract Oxygen plasma processing of thermally cured PDMS films results in controlled surface nano‐texturing and wettability. Such treatment of thermally crosslinked PDMS produces spontaneously formed wavy structures on the surface with high nano‐scale amplitude and with periodicity of a few 100 nm. With increasing plasma treatment duration, roughness increased while periodicity decreased, resulting in surfaces of enhanced surface area exploited for the enhancement and control of surface hydrophobicity when followed by Fluorocarbon (FC) film coating of the PDMS surface. We achieved hydrophobic surfaces and super‐hydrophobic surfaces. The mechanisms responsible for the plasma‐induced PDMS surface nanotexturing are discussed, and the variations of the wetting properties have been explained using the Wenzel or Cassie‐Baxter models. magnified image
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Wettability of porous surfaces
A. B. D. Cassie, S. Baxter · Transactions of the Faraday Society · 1944 · 13.5K citations