David Engblom (IMAGE) Linköping University Caption David Engblom, professor at Linköping University. Credit Thor Balkhed/Linköping University Usage Restrictions Please use appropriate caption and credit. 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.