Graphene Device (IMAGE) DOE/Lawrence Berkeley National Laboratory Caption An optical image of the graphene device on a silicon dioxide/silicon chip. Shining metal wires are connected to gold electrodes for electrical measurement. Credit Guorui Chen/Berkeley Lab 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.