title: Nonequilibrium Gibbs' criterion for completely wetting volatile liquids.
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.
authors.affiliation: TIPs (Transfers, Interfaces and Processes), Université Libre de Bruxelles , CP 165/67, Av. F.D. Roosevelt 50, 1050 Brussels, Belgium.
authors.forename: Yannis
authors.initials: Y
authors.lastname: Tsoumpas
authors.forename: Sam
authors.initials: S
authors.lastname: Dehaeck
authors.forename: Mariano
authors.initials: M
authors.lastname: Galvagno
authors.forename: Alexey
authors.initials: A
authors.lastname: Rednikov
authors.forename: Heidi
authors.initials: H
authors.lastname: Ottevaere
authors.forename: Uwe
authors.initials: U
authors.lastname: Thiele
authors.forename: Pierre
authors.initials: P
authors.lastname: Colinet