Dan Buttry and Tylan Watkins (IMAGE) Arizona State University Caption Dan Buttry, professor and chair of ASU's Department of Chemistry and Biochemistry, examines a battery sample with graduate student Tylan Watkins. Credit Mary Zhu 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.