Benjamin Gilbert, Berkeley Lab (IMAGE) DOE/Lawrence Berkeley National Laboratory Caption Benjamin Gilbert, a geochemist with Berkeley Lab's Earth Sciences Division, led an experiment in which thermally-activated electron hopping in iron oxide particles was directly observed for the first time. Credit Courtesy of Benjamin Gilbert, 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.