The Birth of Topological Spintronics (IMAGE) Penn State Caption The atomic layers of the topological insulator bismuth selenide are visible in this high-resolution electron microscope image. Credit Samarth lab, Penn State University Usage Restrictions The image credit must be published along with the image. 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.