Graphene Crystal Structure (IMAGE) University of California - Santa Barbara Caption This is concept art of the crystal structure (top view) of AB-stacked bilayer graphene. Credit Peter Allen, UCSB 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.