Pellet (2 of 3) (IMAGE) Rice University Caption Scanning electron microscope images show graphene flakes before compression, at left, with individual flakes outlined, and well-connected graphene sheets after compression at right. Scale bar is 20 nanometers. Credit Ajayan Research Group/Rice University 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.