Optical forging (IMAGE) University of Jyväskylä - Jyväskylän yliopisto Caption Top - Atomic force microscopy images of the suspended graphene drum skin before and after optical forging. Bottom - analogue presentation of how a material can become stiffer when it is corrugated. Credit University of Jyväskylä/Pekka Koskinen, Vesa-Matti Hiltunen 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.