Shakendiagnostics Surface (IMAGE) University of Washington Caption A drop of liquid sits on the textured silicon surface that has arced rungs to guide the drop, and a grid of pillars to keep the drop in the channel. Credit Karl Bohringer, UW Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.