Thermal Hotspots (IMAGE) DOE/Lawrence Berkeley National Laboratory Caption Electron micrograph showing multiple nano-sized electromagnetic hotspots on an aluminum film. Credit courtesy of Xiang Zhang research group Usage Restrictions None 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.