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Water droplet motion control on superhydrophobic surfaces: Exploiting the Wenzel-to-Cassie transition

Liu, Guangming; Fu, Lan; Rode, Andrei V; Craig, Vincent

Description

Water droplets on rough hydrophobic surfaces are known to exist in two states; one in which the droplet is impaled on the surface asperities (Wenzel state) and the other, a superhydrophobic state in which air remains trapped beneath the droplet (Cassie state). Here, we demonstrate that water droplets can transit from the Wenzel-to-Cassie state even though the former is energetically favored. We find that two distinct superhydrophobic states are produced. One is a true Cassie state, whereas the...[Show more]

CollectionsANU Research Publications
Date published: 2011
Type: Journal article
URI: http://hdl.handle.net/1885/59364
Source: Langmuir
DOI: 10.1021/la104669k

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