How to control mixing between two droplets? Tune the interfacial tension to either enhance of suppress surface jets. Beautiful video captured in our labs by @FluidsTom - with thanks to the @royalsociety and @EPSRC @UKFluidsNetwork (with @RafaelCastrejon and @markwilsonleeds) pic.twitter.com/1Z9aA0voiL

— Oxford Fluid Dynamics Lab (@OxfordFluids) February 24, 2020