MPIDS Colloquium: Wetting of liquid drops: When surface tension is not constant
14:15 - 15:15
Prof. Jacco Snoeijer
University of Twente, Enschede, The Netherlands
Max-Planck-Institut für Dynamik und Selbstorganisation (MPIDS)
MPIDS seminar room 0.79
The equilibrium contact angle of a drop on a solid substrate is governed Young’s law, involving the surface energies of the liquid and of the solid. In the presence of surfactants, however, these surface energies are not constant and the classical derivation of Young’s law no longer applies. The same holds for wetting on soft solids, where surface energy depends on strain (known as the Shuttle-worth effect). Here we explore how the laws of wetting are affected when surface energies are cou-pled to additional fields, and how this can lead to dynamical instabilities.