Speaker
Prof.
Frédéric van Wijland
Description
In equilibrium fluids, wetting is controlled by the competition of three surface tensions between the three phases (liquid, gas, solid). When the particles comprising the fluid become self-propelled, the question of wetting begins with a proper definition of surface tension (which may not be unique out of equilibrium). I will present a robust mechanics-based definition for surface tension. I will use this definition to explore the properties of a droplet at contact with a solid. It will appear that the angle of contact of an active droplet is no more governed by the Young-Dupré equation.
With Y. Zhao, J. Tailleur, A. Daerr, R. Zakine, Y. Kafri
Primary author
Prof.
Frédéric van Wijland
