Wetting at Superhydrophobic Surfaces (Abstract/Poster in atti di convegno)

Type
Label
  • Wetting at Superhydrophobic Surfaces (Abstract/Poster in atti di convegno) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Alternative label
  • Ferrari M.; Ravera F.; Liggieri L.; Rao S. (2006)
    Wetting at Superhydrophobic Surfaces
    in ECIS 06 : 20th Conference of the European Colloid and Interface Society, Budapest (Ungheria)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Ferrari M.; Ravera F.; Liggieri L.; Rao S. (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
  • In: ECIS 06 : 20th Conference of the European Colloid and Interface Society (Budapest (Ungheria), 17-22 September 2006). Proceedings, pp. 176-176. ECIS06, 2006. (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#descrizioneSinteticaDelProdotto
  • Surfaces with high degree of hydrophobicity, with a water-contact angie greater than 150°, are of great interest for both fundamental research and practical applications. An originai methodology based on a mixed inorganic-organic coating in a multistep procedure is described for the preparation of a superhydrophobic surface. Aim of this work is investigating the role of different chemicals in water solution such as amphiphiles like SDS, CTAB, phosphine oxides and CiEjs on the wetting of such superhydropbobic surface at oil-water and air-water interface. Alcohols, acetic acid and hydrocarbons with different chain length have been also tested. Increasing surfactant adsorption results in a switch between a Cassie-Baxter and a Wenzel regime for superhydrophobic surfaces. Due to the adsorption at the solid surface and the increasing of the ionie strength, more hydrophilic domains are created and the liquid fills the surface grooves enhancing the hystheresis. By coupling the adsorption properties and the repellence of the solid surface, the drop spreading can be controlled confining its volume in a restricted space. (literal)
Titolo
  • Wetting at Superhydrophobic Surfaces (literal)
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