Volume 81, Number 6, March 2008
|Number of page(s)||6|
|Section||Condensed Matter: Structural, Mechanical and Thermal Properties|
|Published online||20 February 2008|
Multiple time scale dynamics in the breakdown of superhydrophobicity
Physics of Fluids, Department of Applied Physics, University of Twente P.O. Box 217, 7500 AE Enschede, The Netherlands
2 Membrane Technology Group, Department of Chemical Engineering, University of Twente P.O. Box 217, 7500 AE Enschede, The Netherlands
Accepted: 19 January 2008
Drops deposited on rough and hydrophobic surfaces can stay suspended with gas pockets underneath the liquid, then showing very low hydrodynamic resistance. When this superhydrophobic state breaks down, the subsequent wetting process can show different dynamical properties. A suitable choice of the geometry can make the wetting front propagate in a stepwise manner leading to square-shaped wetted area: the front propagation is slow and the patterned surface fills by rows through a zipping mechanism. The multiple time scale scenario of this wetting process is experimentally characterized and compared to numerical simulations.
PACS: 68.08.Bc – Wetting / 68.03.Cd – Surface tension and related phenomena / 68.08.De – Liquid-solid interface structure: measurements and simulations
© EPLA, 2008
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.