When a liquid drop spreads on an adaptive substrate the latter changes its properties what may result in an intricate coupled dynamics of drop and substrate. In  we presented a mesoscale hydrodynamic model for a droplet spreading on a polymer brush as a gradient dynamics on an underlying energy functional. The model accounts for coupled spreading, absorption and wicking dynamics, while the underlying energy functional incorporates capillarity, wettability and brush energy.
In this talk, we give a brief recap of the model and provide further insights into the (de)wetting behavior and the dynamics of a moving contact line on polymer brushes that we obtain from numerical simulations.
 U. Thiele, S. Hartmann “Gradient dynamics model for drops spreading on polymer brushes” EPJ ST, 229, 1819--1832 (2020)