Elastic Deformation of Soft Supported Films of Finite Thickness during the Drainage of a Viscous Fluid

摘要

Elastohydrodynamic deformation can cause lift and reduce friction during sliding and alter the rheological properties of soft colloidal particles. It also modifies the shape of approaching surfaces, a determining factor for the adhesion dynamics to wet or flooded surfaces. When studying elastohydrodynamics in soft matter it is a challenge to measure simultaneously the hydrodynamic forces and the deformation, both necessary to understand how contact is reached and the coupling between deformation of the solid and viscous dissipation in the fluid.