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日時：2023年9月14日（木）13:30-14:45
場所：豊中キャンパス 基礎工学棟 B棟3階 B303講義室
（地図の6番 https://www.osaka-u.ac.jp/ja/access/toyonaka/toyonaka.html）
講演者：Prof. Fanlong Meng（Institute of Theoretical Physics, Chinese Academy of Sciences・中国科学院）
Title: Modeling hydrodynamically mediated collective responses of active matter – active turbulence and cilia synchronisation
Abstract: I shall present our recent theoretical works on how hydrodynamics can induce collective dynamics of active matter systems. (1) Both active nematics (microtubule-motor system) and bacteria suspensions can exhibit turbulent behaviours, but with different scaling in the energy spectra. We construct an analytical model to understand such scaling behaviours in the two systems, where we reach good agreements between analytic calculations and experimental measurements. (2) Cilia can coordinate with each other by hydrodynamic interactions, beating in the form of a metachronal wave. With the dynamic model, we 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, which may guide future fabrications of model cilia for industrial applications.