Engineering Sticky Superomniphobic Surfaces on Transparent and Flexible PDMS Substrate
| Autor: | Yannick Coffinier, Renaud Dufour, Vincent Thomy, Rabah Boukherroub, Vincent Senez, Maxime Harnois |
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| Přispěvatelé: | Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 (IEMN), Centrale Lille-Institut supérieur de l'électronique et du numérique (ISEN)-Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF) |
| Rok vydání: | 2010 |
| Předmět: |
Yield (engineering)
Polydimethylsiloxane Mineralogy 02 engineering and technology Surfaces and Interfaces Substrate (electronics) Adhesion 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Surface energy 0104 chemical sciences Contact angle chemistry.chemical_compound Hysteresis chemistry Electrochemistry General Materials Science Wetting Composite material 0210 nano-technology Spectroscopy |
| Zdroj: | Langmuir Langmuir, American Chemical Society, 2010, 26, pp.17242-17247. ⟨10.1021/la103462z⟩ Langmuir, 2010, 26, pp.17242-17247. ⟨10.1021/la103462z⟩ |
| ISSN: | 1520-5827 0743-7463 |
| Popis: | Following the achievement of superhydrophobicity which prevents water adhesion on a surface, superomniphobicity extends this high repellency property to a wide range of liquids, including oils, solvents, and other low surface energy liquids. Recent theoretical approaches have yield to specific microstructures design criterion to achieve such surfaces, leading to superomniphobic structured silicon substrate. To transfer this technology on a flexible substrate, we use a polydimethylsiloxane (PDMS) molding process followed by surface chemical modification. It results in so-called sticky superomniphobic surfaces, exhibiting large apparent contact angles (>150°) along with large contact angle hysteresis (>10°). We then focus on the modified Cassie equation, considering the 1D aspect of wetting, to explain the behavior of droplets on these surfaces and compare experimental data to previous works to confirm the validity of this model. |
| Databáze: | OpenAIRE |
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