Graphene Nanoconstriction (IMAGE) Lehigh University Caption This is a scanning electron microscopy (SEM) image of graphene nanoconstriction: graphene material is shown in red, 4 metal electrodes are also seen. Credit B. Terrés, L. A. Chizhova, F. Libisch, J. Peiro, D. Jörger, S. Engels, A. Girschik, K. Watanabe, T. Taniguchi, S. V. Rotkin, J. Burgdörfer, C. Stampfer 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.