Journal
SOFT MATTER
Volume 6, Issue 7, Pages 1409-1412Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c001234c
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- Selex Communications (a Finmeccanica Company)
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A sessile (water) drop deposited onto a superhydrophobic surface can stay in two different regimes: the heterogeneous (or Cassie-Baxter) regime, where air or vapour is trapped at the interface, or the homogenous (or Wenzel) regime, where the interface is completely wet. Often, a spontaneous transition from the first to the second regime may occur in time. We report on a study of this phenomenon in a new kind of superhydrophobic surfaces, characterized by a relevant spatial disorder. The observed transition follows a behaviour quite different respect to the one measured in the commonly used periodic artificial arrays.
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