Behavior of Droplets (IMAGE) Saarland University Caption Polystyrene droplets on two different substrates slowly adopt the same equilibrium contact angle, but the velocity and flow profiles of the molecules in the droplets are different in the two cases. Credit Illustration: Thomas Braun, Heidelberg. Usage Restrictions Image may only be used with appropriate caption or credit. 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.