Tiny Robots Lay Waste to Biofilms (IMAGE) University of Pennsylvania Caption With a precise, controlled movement, microrobots cleared a glass plate of a biofilm, as shown in this time-lapse image. Credit Image: Geelsu Hwang and Edward Steager/University of Pennsylvania Usage Restrictions In context of reporting 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.