The bounce-splash of a viscoelastic drop (low resolution video)

Abstract

This is an entry for the Gallery of Fluid Motion of the 61st Annual Meeting of the APS-DFD ( fluid dynamics videos ). This video shows the collision and rebound of viscoelastic drops against a solid wall. Using a high speed camera, the process of approach, contact and rebound of drops of a viscoelastic liquid is observed. We found that these drops first splash, similar to what is observed in Newtonian colliding drops; after a few instants, the liquid recoils, recovering its original drop shape and bounce off the wall.