厦门大学

报告摘要：

Liquid-liquid phase separation is a fundamental process that continuously attracts attention from scientists and engineers across diverse disciplines. While the equilibrium theory is well known, the physics of LLPS in nonequilibrium environments is still at its infancy, despite its relevance to microfluidics and cellular systems. In this talk, I will show how activity, particularly active stresses and flows, can remodel the equilibrium physics of LLPS. Fundamentally, we show that activity can introduce many interesting phenomena, including the arrested phase separation, giant interfacial fluctuations, active capillary waves, and activity-induced wetting. Practically, our results offer a generic method to manipulate diverse aspects of LLPS using activity, ranging from the behavior of droplets to the kinetics, structure, and degree of phase separation. Our results highlight the rich new physics of LLPS invoked by activity.

报告人简介：

Dr. Zhihong You is currently a professor at the Department of Physics, Xiamen University. He received his doctorate in physics from Leiden University in 2019. After that, he worked at the University of California Santa Barbara for three years as a postdoc scholar, under the supervision of Prof. M. Cristina Marchetti. In 2022, he started his own group at Xiamen University. He was awarded the National Young Talent Program, and has published in top journals including Science, Science Advances, PRX, PRL, PNAS. He is mainly interested in the theoretical aspects of active, soft&bio matter. His works involve bacterial colonies, active liquid crystals, liquid- liquid phase separation, and nonreciprocal (i.e. violating Newton's 3rd law) systems etc.

邀请人：彭毅（pengy@iphy.ac.cn）