Xuanhong Cheng (IMAGE) Lehigh University Caption Xuanhong Cheng is a professor of bioengineering and materials science and engineering in Lehigh University's P.C. Rossin College of Engineering and Applied Science. Credit Courtesy of Lehigh University Usage Restrictions Credited, contextual use only License Original 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.