Surface Tension

Tuesday, March 27, 2018 - 10:50am - 11:20am
Paul Steen (Cornell University)
How fast can a liquid wet (or unwet) a solid support? This is important to a range of industrial applications from semiconductor fabrication by immersion lithography to the management of liquid propellants in spacecraft. 'Dynamical contact line' studies have historically taken a visco-capillary or low Reynolds number perspective. This perspective brings to mind stress singularity, slip lengths, microscopic and macroscopic contact angles, etc. – all fundamental issues raised in the ground-breaking studies of Scriven, Dussan V., Hocking, Cox, de Gennes and others.
Monday, March 26, 2018 - 10:50am - 11:20am
Jacco Snoeijer (Universiteit Twente)
Droplets on highly deformable, elastic surfaces exhibit unusual wetting behaviour. The deformability of the substrate alters the contact angle with respect to Young’s law, while spreading dynamics is fundamentally different from that on rigid surfaces. Here we report recent experimental and theoretical progress, and highlight some of the salient features of the solid’s surface tension.
Thursday, July 18, 2013 - 5:00pm - 6:00pm
Shawn Walker (Louisiana State University)
Two phase fluid flows on substrates (i.e. wetting phenomena) are important in many industrial processes, such as micro-fluidics and coating flows. These flows include additional physical effects that occur near moving (three-phase) contact lines. We present a new 2-D variational (saddle-point) formulation of a Stokesian fluid with surface tension that interacts with a rigid substrate.
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