Research team (IMAGE) The University of Hong Kong Caption PhD student Xu Zhang (on the left) and his advisor Dr Zi Yang Meng from the Department of Physics at HKU. Credit The University of Hong Kong Usage Restrictions N/A 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.