A02: Experimental Investigation of Coalescence and Breakup of Droplets on Solid Surfaces – Generic Configuration Sessile Drop
This experiment is designed to examine the coalescence of drops on a surface with a contact angle less than 90°. Furthermore, the breakup of evaporating drops on a complex surface will be studied. In both cases the central goal is a better understanding of these processes. Special attention will be directed to capturing the velocity field in the drop directly at the contact line. Special optical arrangements will allow a spatial resolution down to a few micrometers. The surface is constructed to also allow temperature gradients and electrical fields to be imparted. Temperature measurements will be performed using an infrared camera.