Brian Gleeson (IMAGE) University of Pittsburgh Caption Brian Gleeson, the Harry S. Tack Professor and Chair of the University of Pittsburgh’s Department of Mechanical Engineering and Materials Science Credit Swanson School of Engineering Usage Restrictions No restrictions. License Public Domain 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.