Non Equilibrium Gibbs' Criterion for Completely Wetting Volatile Liquids

Tsoumpas Y, Dehaeck S, Galvagno M, Rednikov A, Ottevaere H, Thiele U, Colinet P

Research article (journal) | Peer reviewed

Abstract

During the spreading of a liquid over a solid substrate, the contact line can stay pinned at sharp edges until the contact angle exceeds a critical value. At (or sufficiently near) equilibrium, this is known as Gibbs’ criterion. Here, we show both experimentally and theoretically that, for completely wetting volatile liquids, there also exists a dynamically-produced contribution to the critical angle for depinning, which increases with the evaporation rate. This suggests that one may introduce a simple modification of the Gibbs’ criterion for (de)pinning that accounts for the nonequilibrium effect of evaporation.

Details about the publication

JournalLangmuir
Volume30
StatusPublished
Release year2014
Language in which the publication is writtenEnglish
DOI10.1021/la502708f

Authors from the University of Münster

Thiele, Uwe
Professur für Theoretische Physik (Prof. Thiele)
Center for Nonlinear Science
Center for Multiscale Theory and Computation