Researchers (IMAGE) Hong Kong University of Science and Technology Caption Shaohua LI (left) and Trung Duc NGUYEN (right) are two co-first authors of the paper. Credit The Hong Kong University of Science and Technology 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.