Hongyu Liu is a Professor and the Associate Head at the Department of Mathematics, City University of Hong Kong. Before taking up the current position, he held faculty positions at Hong Kong Baptist University, University of North Carolina (Charlotte, USA), University of Reading (UK) and University of Washington (Seattle, USA). He obtained his PhD in Mathematics from The Chinese University of Hong Kong. His research focuses on the analysis, computation and applications of inverse problems and imaging, wave propagations, partial differential equations, mathematical physics, mathematical materials science, scattering theory and spectral theory. He has also been working on the interplay among scattering methods, bionic learning and artificial intelligence.