Microbullet Hits Confirm Graphene's Strength (IMAGE) Rice University Caption Rice University scientists fired microbullets at supersonic speeds in experiments that show graphene is 10 times better than steel at absorbing the energy of a penetrating projectile. Credit Jae-Hwang Lee/Rice University Usage Restrictions For news media purposes only. 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.