RUBBER 1 (IMAGE) Rice University Caption A transmission electron microscope image shows the interlayer spacing of turbostratic graphene produced at Rice University by flashing carbon black from discarded rubber tires with a jolt of electricity. Credit Tour 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.