Arwen (IMAGE) Linköping University Caption An important part of the work has been conducted on one of the world's most outstanding transmission electron microscopes, Arwen, at Linköping University. Credit Magnus Johansson 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.