Xi-Cheng Zhang, University of Rochester (IMAGE) University of Rochester Caption This is Xi-Cheng Zhang, director of the University of Rochester's Institute of Optics. Credit Photo by J. Adam Fenster / University of Rochester 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.