Drops on polymer brushes -- advances in thin-film modelling of adaptive substrates
arXiv:2311.07307 · doi:10.1021/acs.langmuir.3c03313
Abstract
We briefly review recent advances in the hydrodynamic modeling of the dynamics of droplets on adaptive substrates, in particular, solids that are covered by polymer brushes. Thereby, the focus are long-wave and full-curvature variants of mesoscopic hydrodynamic models in gradient dynamics form. After introducing the approach for films/drops of nonvolatile simple liquids on rigid smooth solid substrate, it is first expanded to an arbitrary number of coupled degrees of freedom, before considering the specific case of drops of volatile liquids on brush-covered solids. After presenting the model its usage is illustrated by briefly considering the natural and forced spreading of drops of nonvolatile liquids on a horizontal brush-covered substrate as well as drops sliding down a brush-covered incline. Finally, also volatile liquids are considered.
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- Gradient dynamics model for drops of volatile liquid on a porous substrate
- Gradient dynamics model for chemically driven running drops
- What is active wetting?