Professor Tsai and Dr Chen (IMAGE) City University of Hong Kong Caption Professor Tsai Din-ping (right), Chair Professor of CityU's Department of Electrical Engineering (EE) and Dr Chen Mu-Ku, Research Assistant Professor of EE. Credit City University of Hong Kong Usage Restrictions Image must be used with appropriate caption and credit. 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.