The research team (from left): (IMAGE) University of Bonn Caption Prof. Dr. Martin Weitz, Dr. Julian Schmitt, Dr. Frank Vewinger, Prof. Dr. Johann Kroha and Göran Hellmann from the Institute of Applied Physics at the University of Bonn. Credit © Gregor Hübl/Uni Bonn Usage Restrictions This image may be used together with the 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.