Back to Search
Start Over
Vibration-induced Wenzel-Cassie wetting transition on microstructured hydrophobic surfaces
- Source :
- Applied Physics Letters. 104:181601
- Publication Year :
- 2014
- Publisher :
- AIP Publishing, 2014.
-
Abstract
- Wetting transitions were studied with vertically vibrated droplet on various polydimethylsiloxane surfaces with square array of pillars. Our experiments show that the increase of the pillar spacing, at each given frequency, leads to a decrease of the critical amplitude (which is required to achieve a Wenzel to Cassie transition). The physical mechanism of Wenzel-Cassie transition by vibration is presented. Compared with other studies of wetting transition by vibration, we demonstrate that Wenzel-Cassie transition comes up when R(θ)fn2Acr2≈const (where fn is the resonance frequency, Acr is the threshold amplitude, and R(θ) is the initial radius of the droplet).
- Subjects :
- chemistry.chemical_classification
Materials science
Physics and Astronomy (miscellaneous)
Condensed matter physics
Polydimethylsiloxane
Nanotechnology
Radius
Polymer
Condensed Matter::Soft Condensed Matter
Physics::Fluid Dynamics
Vibration
Contact angle
chemistry.chemical_compound
Amplitude
chemistry
Wetting transition
Wetting
Subjects
Details
- ISSN :
- 10773118 and 00036951
- Volume :
- 104
- Database :
- OpenAIRE
- Journal :
- Applied Physics Letters
- Accession number :
- edsair.doi...........692996485356bb965d8088ff41e4f06a
- Full Text :
- https://doi.org/10.1063/1.4875586