Repelling the Drop on Top (image) Fraunhofer-Gesellschaft Caption On the left is micrometer-scale structured polystyrene surfaces for use with micro-fluids. On the right is static wetting of this type of surface with water - simulation and experiment. Credit Fraunhofer IWM Usage Restrictions The picture may be used for editorial purposes only. It is protected by copyright. The use is free of charge if the reference is mentioned. 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.