Stiffness Matters (IMAGE) University of Freiburg Caption This is a graphic byPrasad Shastri, Shengnan Xiang. Credit Graphic: Prasad Shastri, Shengnan Xiang 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.