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Direct method of tracing the wetting states on nanocomposite surfaces
Kevin K Wang1, Han Yan, Cindy X Zhao
1Department of Materials Science & Engineering, McMaster University, Hamilton, Ontario L8S 4L7, Canada.
Langmuir : the ACS Journal of Surfaces and Colloids
|May 13, 2010
Abstract:
Identifying the two distinctive wetting states on a nanostructured surface remains an open challenge. We report here a direct method of tracing the Wenzel and Cassie states by using Ag nanoparticles as tracing agents. The method provides an answer to the long-standing question of whether there is a transition from the Wenzel to Cassie state in the sliding angle drop on superhydrophobic nanocomposite thin films containing multiwalled carbon nanotubes.

