Bismuthene Film Interrupted (IMAGE) University of Würzburg Caption Bismuthene film interrupted at a step in the silicon carbide substrate viewed through a scanning tunnelling microscope. The film areas inevitably end at the substrate step and a conducting edge channel (white) occurs. Credit Photo: Felix Reis 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.