Oddly Satisfying Metamaterials (VIDEO) Purdue University This video is under embargo. Please login to access this video. To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Caption When you press the dimpled circles on a fountain drink lid, they become either convex or concave. This demonstrates bistability: materials or structures that have two stable states. Andres Arrieta has demonstrated a patterned sheet of these domes that forms an energy-storing skin, strong enough to perform mechanical tasks, and even programmable to store and process data like a mechanical computer. Credit Purdue University/Jared Pike Usage Restrictions None 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.