Walt de Heer with Graphene Device (IMAGE) Georgia Institute of Technology Caption Georgia Tech Professor Walt de Heer holds a proof-of-principle device constructed of graphene. Screen display shows graphene patterning. Credit Georgia Tech Photo: Gary Meek 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.