Non-Equilibrium Gibbs' Criterion for Completely Wetting Volatile Liquids
Fluid Dynamics
2014-10-27 v1
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 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 non-equilibrium effect of evaporation.
Keywords
Cite
@article{arxiv.1410.6783,
title = {Non-Equilibrium Gibbs' Criterion for Completely Wetting Volatile Liquids},
author = {Yannis Tsoumpas and Sam Dehaeck and Mariano Galvagno and Alexey Rednikov and Heidi Ottevaere and Uwe Thiele and Pierre Colinet},
journal= {arXiv preprint arXiv:1410.6783},
year = {2014}
}