Microscopic structure of electrowetting-driven transitions on superhydrophobic surfaces
| dc.creator | Staicu, A. | |
| dc.creator | Manukyan, G. | |
| dc.creator | Mugele, F. | |
| dc.date | 2008-01-17 | |
| dc.date.accessioned | 2026-07-07T08:55:02Z | |
| dc.date.available | 2026-07-07T08:55:02Z | |
| dc.description | We investigate directly at the microscale the morphology of the electrowetting induced transition between the Cassie-Baxter and Wenzel states for a water droplet on a superhydrophobic surface. Our experiments demonstrate that the transition originates in a very narrow annular region near the macroscopic contact line, which is first invaded by water and causes a thin film of air to be entrapped below. At high applied voltages, a growing fraction of microscopic air-pockets collapse, resulting in a partialWenzel state. Modulations in the intensity of the light reflected from individual micro-menisci clarify that the local contact angles near the filling transition are close to the usual advancing values for contact lines on smooth surfaces. | |
| dc.description | 9 pages, 5 figures | |
| dc.identifier | https://arxiv.org/abs/0801.2683 | |
| dc.identifier | http://arxiv.org/abs/0801.2683 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/146149 | |
| dc.subject | Fluid Dynamics | |
| dc.title | Microscopic structure of electrowetting-driven transitions on superhydrophobic surfaces | |
| dc.type | text |