报告摘要：

Active matter encompasses a wide range of biological and synthetic non-equilibrium systems that can develop and maintain order, such as swarming, motility induced phase separation, and self-propulsion of topological defects. In chiral active matter, the constituents can self-spin, thereby breaking time-reversal symmetry. Because many biological systems have intrinsic chirality, the study of chiral active matter can shed light on the mechanism of self-organization in living systems, and also offer new opportunities in novel topological materials and microscale transport. In this talk, we will theoretically and numerically examine the physics of chiral active matter by studying two systems, with one being circularly locomoting particles and the other being chiral active liquid crystals. Our works demonstrate that the geometry of the environment can give rise to nontrivial emergent dynamics of chiral systems, which are however absent in achiral active matter. Finally we show experimental evidence of our claims.

报告人简介：

Dr. ZHANG Rui is currently an Assistant Professor of Physics at Hong Kong University of Science and Technology (HKUST). Before joining HKUST, he was a Distinguished Research Associate in the Pritzker School of Engineering at the University of Chicago. Prior to that, he did PhD at the Levich Institute of Physio-Chemical Hydrodynamics at City College of New York. He obtained his B.S. in Physics from Fudan University. Dr Zhang is a Computational Soft Matter Physicist specialized in active matter, liquid crystals, and nanofluidics. He has published as first or corresponding author in many top journals, including Nature Materials, Nature Reviews Materials, PRL, PNAS, Nature Communications, and Science Advances. He is currently serving on the Executive Committee in the Physical Society of Hong Kong.

地点：中国科学院物理研究所M楼253会议室

邀请人：彭毅