Bismuth Selenide Film (IMAGE) U.S. National Science Foundation Caption The surface of bismuth selenide film shows the triangular layer structure that is characteristic of 2-D chalcogenide materials. Credit Joan Redwing, Department of Materials Science and Engineering, Penn State University 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.