Karl-Olof Bergman, Linköping University (IMAGE) Linköping University Caption Karl-Olof Bergman, senior lecturer at Linköping University. Credit IFM/Linköping University Usage Restrictions The image may only be used with appropriate caption and credit, to illustrate the research presented in the corresponding press release. 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.