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Strong water repellency effect on SiO2 films processed at a nanometric scale

Abstract : The present study deals with the creation of nano-rough surfaces with stable and controlled high hydrophobicity. These surfaces were obtained by combining the ion track etching technique with a simple functionalization by grafting perfluoroctyltrichlorosilane (PFOTS) molecules. Surface morphology was investigated by AFM observations which evidenced a self-affine fractal structure with a fractal dimension Df ~ 2.6. The study of the wetting properties of these surfaces allowed to elucidate the conditions for observing a high hydrophobicity phenomenon and to predict the contact angle values for surfaces designed at a nanometric scale.
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Submitted on : Tuesday, March 31, 2009 - 2:50:37 PM
Last modification on : Tuesday, October 19, 2021 - 11:34:34 PM

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S.M.M. Ramos, Abdenacer Benyagoub, B. Canut, P. de Dieuleveult, G. Messin. Strong water repellency effect on SiO2 films processed at a nanometric scale. European Physical Journal B: Condensed Matter and Complex Systems, Springer-Verlag, 2008, 62, pp.405-410. ⟨10.1140/epjb/e2008-00182-1⟩. ⟨cea-00372177⟩

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