2022.09.23 Hydrodynamically-mediated collective responses of active matter

2022-09-19 12:56:43

北京大学定量生物学中心

学术报告

Hydrodynamically-mediated collective responses of active matter

---active turbulence and cilia synchronisation


报告人: 孟凡龙 副研究员

中国科学院理论物理研究所

fanlong.meng@itp.ac.cn

: 923日(周五)10:00-11:00

: 吕志和楼B101

主持人: 林杰 研究员

:

I will present our recent works on the collective dynamics of the active matter systems. (1) Both active nematics (microtubule-motor system) and bacteria suspensions can exhibit turbulent behaviours, but with different scaling in their energy spectra. We try to understand such scaling behaviours by analysing the hydrodynamics in the system, where we reach good agreements between the analytic calculation and the experimental measurements. (2) Cilia can coordinate with each other by hydrodynamic interactions, beating in the form of a metachronal wave. We construct an analytical model to deal with the coordinated dynamics of a cilia array which contains an infinite number of model cilia. With the theory, we can provide the dispersion relation and predict the stable wave patterns in the model cilia arrays.

报告人简介:

孟凡龙,中国科学院理论物理研究所副研究员。2010年本科毕业于中国科学技术大学近代物理系,2015年博士毕业于中国科学院理论物理研究所。2015-2016年在剑桥大学进行博士后研究,2016-2018年在牛津大学进行博士后研究,2018-2019年在马普动力学和自组织研究所从事洪堡学者和博士后研究。201912月,孟凡龙加入中国科学院理论物理研究所任副研究员。目前主要从事软物质和生物物理方面的理论研究,包括活性物质动力学理论,高分子系统的流变学特性,液液相分离理论等(http://lib.itp.ac.cn/html/meng)。