Biomimicry of Feeding (image) University of Pittsburgh Share Print E-Mail Caption The enzyme-coated sheet generates an inward flow which pulls in fleeing, self-propelled particles (yellow spheres). Within the sheet or crab, the catalase-coated nodes are marked in green, and the heavier nodes at the apexes are indicated in black. Credit Abhrajit Laskar/Anna Balazs Usage Restrictions None Share Print E-Mail 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.