Dominic Vella - Drops with deformable boundaries: Flat tops and Ageing

A liquid droplet placed on a rigid, planar surface has a captivating simplicity: its surface is a spherical cap and remains in equilibrium. In this talk, I’ll show that the addition of a deformable boundary leads to a range of new phenomena: evaporating droplets with an elastic skin may develop flat tops, but even without a complex rheology, reaching equilibrium can happen slowly, with the droplet’s contact ageing. I will discuss two specific examples, presenting a combination of theory and experiment for each.

Dominic Vella is a Professor at the University of Oxford. His research is concerned with various aspects of solid and fluid mechanics in general but with particular focus on the wrinkling of thin elastic objects and surface tension effects.

Published Apr. 11, 2024 7:42 PM - Last modified Apr. 12, 2024 1:43 PM