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Updated: May 27, 2026

Light-induced Patterning and Grafting for Slippery Surfaces based on Silane-coated Nanoporous Structures
Published on: November 14, 2025
Super-hydrophobic, highly adhesive, polydimethylsiloxane (PDMS) surfaces
Morgan M Stanton1, Robert E Ducker, John C MacDonald
1Worcester Polytechnic Institute, Chemistry and Biochemistry Department, 100 Institute Road, Worcester, MA 016091, USA.
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.
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