David Sholl (IMAGE) DOE/Oak Ridge National Laboratory Caption David Sholl. Credit: ORNL, U.S. Dept. of Energy Credit Credit: ORNL, U.S. Dept. of Energy Usage Restrictions n/a 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.