Dionisis Vlachos, University of Delaware (IMAGE) University of Delaware Caption Dionisios Vlachos, professor of chemical engineering at UD, is the chief investigator on a $960,000 hydrogen research grant from the US Department of Energy. Credit Photo by Kevin Quinlan Usage Restrictions Contact University of Delaware for permission. Credit to University of Delaware required. 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.