H-graphene (IMAGE) Carnegie Institution for Science Caption This image is a comparison of the carbon compound graphene with a similar hydrogen-based structure synthesized by Carnegie scientists. Credit Carneige's Ivan Naumov and Russell Hemley Usage Restrictions With credit 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.