Dr. Brian D. Iverson (IMAGE) Purdue University Caption Brian D. Iverson, a mechanical engineering doctoral student at Purdue, holds up a disk containing several Credit Purdue News Service photo/David Umberger 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.