Professor Xiang Zhang is president and vice-chancellor of the University of Hong Kong. He is a member of the Chinese Academy of Sciences (CAS) and the US National Academy of Engineering (NAE). His research focuses on materials physics, metamaterials and nano-photonics. He has published over 390 journal papers, including over 90 publications in the Science and Nature family series. In 2008, Professor Zhang's research was selected by Time Magazine as one of the "Top Ten Scientific Discoveries of the Year" and "50 Best Inventions of the Year", Discover Magazine's "Top 100 Science Stories" in 2007, and R&D Magazine's top 25 Most Innovative Products of 2006. In 2019, his research team's work on "Casimir effect" was selected as one of the Top 10 Breakthroughs for 2019 by Physics World.