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BP: Fachverband Biologische Physik

BP 10: Posters DY - Fluid Physics, Active Matter, Complex Fluids, Soft Matter and Glasses (joint session DY/BP)

BP 10.9: Poster

Montag, 22. März 2021, 14:00–16:30, DYp

Simple model for drops on elastic substrates — •Christopher Henkel¹, Uwe Thiele¹, and Jacco Snoeijer² — ¹Institut für Theoretische Physik, WWU-Münster, Germany — ²Fac. of Science and Technologie, University Twente, Netherlands

The investigation of the wetting behavior on viscoelastic or elastic substrates is of great interest. In this talk we present a simple model for steady liquid drops on fully compressible elastic substrates and show that a double transition of contact angles appears under variation of the substrate softness, similar to the one described in [1]. We further discuss whether these angles agree with the Neumann and Young-Laplace conditions in the liquid-liquid and liquid-solid limit respectively and how the transitions depend on drop size. Finally, we employ a gradient dynamics model in the long-wave limit and show first results of direct time simulations.

[1] Lubbers, L. A., Weijs, J. H., Botto, L., Das, S., Andreotti, B., and Snoeijer, J. H., (2014). Drops on soft solids: free energy and double transition of contact angles. Journal of fluid mechanics, 747.