Joshua Lui and Erfu Liu (image) University of California - Riverside Share Print E-Mail Caption Chun Hung (Joshua) Lui (left) and Erfu Liu. Credit I. Pittalwala, UC Riverside. Usage Restrictions None Share Print E-Mail 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.