Charles Stafford and Justin Bergfield, University of Arizona (image) University of Arizona Share Print E-Mail Caption Charles Stafford (left) and Justin Bergfield discuss the flow of electron waves around a benzene ring -- the key to the quantum effects allowing for the conversion of heat into electricity. Credit Daniel Stolte, University of Arizona Usage Restrictions Usage is granted only in conjunction with reporting/posting of this news release. Share Print E-Mail 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.