Bismuth Telluride (IMAGE) DOE/Lawrence Berkeley National Laboratory Caption Cross sectional HRTEM image of bismuth telluride thin-film grown on gallium arsenide substrate. Credit Courtesy of Junqiao Wu, Berkeley Lab 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.