Theoretical approach. (IMAGE) Institute of Science and Technology Austria Caption David Brückner (front) and Edouard Hannezo (back). Credit © ISTA Usage Restrictions Free to use when reporting about ISTA License Original 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.