Frank Zhang, Lehigh Engineering (IMAGE) Lehigh University Caption Lehigh Bioengineering and Mechanical Engineering and Mechanics Assistant Professor Frank Zhang (standing) with Ph.D. candidate Yan Xu. Credit Ryan Hulvat / Lehigh University Usage Restrictions This image may only be used with appropriate caption and/or credit. 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.