Ghosh Pulak K, Debnath Debajyoti, Li Yunyun, Marchesoni Fabio
Department of Chemistry, Presidency University, Kolkata 700073, India.
Center for Phononics and Thermal Energy Science, Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology, School of Physics Science and Engineering, Tongji University, Shanghai 200092, China.
Soft Matter. 2021 Mar 4;17(8):2256-2264. doi: 10.1039/d0sm01784a.
We numerically investigated the diffusion of an active Janus particle in periodic arrays of planar counter-rotating convection rolls at high Péclet numbers. We considered convection patterns with distinct longitudinal and transverse advection properties and characterized the dependence of the relevant diffusion constants on the particle's dynamical parameters, namely, self-propulsion speed, correlation time and chirality. Numerical results are interpreted analytically based on qualitative arguments of classical transport theory. The purpose of the present analysis is controlling active matter transport in microfluidic devices.
我们对高佩克莱数下活性Janus粒子在平面反向旋转对流涡旋的周期性阵列中的扩散进行了数值研究。我们考虑了具有不同纵向和横向平流特性的对流模式，并表征了相关扩散常数对粒子动力学参数的依赖性，即自推进速度、相关时间和手性。基于经典输运理论的定性论证对数值结果进行了解析解释。本分析的目的是控制微流控装置中的活性物质输运。
