Xinfeng Liu, Professor of National Center for Nanoscience and Technology (NCNST), China. He received his Ph.D. in condensed matter physics from NCNST, Chinese Academy of Sciences (CAS) in 2011. After that, he joined the ultrafast optics group at department of Physics and Applied Physics (PAP), SPMS, Nanyang Technological University (NTU, Singapore) as a postdoctoral research fellow. He joined NCNCT as a Professor at 2105. His current research focuses on ultrafast spectroscopy, nonlinear optics and the light-matter interaction in condensed matter physics, with an emphasis on the novel physical phenomena emerging in single micro/nano structures and at surfaces/interfaces. He has over 40 peer-reviewed publications with citations more than 680.