Mapping the Electronic Cloud of Graphene (IMAGE) University at Buffalo Caption The red regions depict folds in graphene, whereas the green regions are relatively flat domains. The "hills and valleys" present in the electron cloud can act as speed bumps preventing the flow of charge through graphene. Ideally, for high-performance electronics, one would like a midwestern topography: completely flat, which would appear all green. Credit Brian J. Schultz and Christopher J. Patridge, University at Buffalo 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.