Textured Surface Repels Water Faster (video) Boston University College of Engineering Loading video... Caption The clock at top shows how fast a drop bounces off a relatively smooth surface (top) and the ridged surface developed by the BU-MIT team (bottom). Credit A.T. Paxson, K. Hounsell, J.W. Bates, J.C. Bird, K.K. Varanasi. Usage Restrictions Embargoed until 1 p.m. EST, Nov. 20, 2013. 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.