手性和非手性微游泳者表面聚集的三维模型。

IF 2.4 3区 物理与天体物理 Q1 Mathematics
Danne M van Roon, Giorgio Volpe, Margarida M Telo da Gama, Nuno A M Araújo
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引用次数: 0

摘要

已知微游泳者在边界附近的持续运动会导致表面积聚。控制表面积聚的一种方法是通过改变其地形来减少游泳者与表面之间的接触表面积,通常是通过应用微尺度结构。在这项工作中,我们引入了一个微游泳者在由上下表面包围的体积中航行的三维(3D)现象学模型。我们用一种有效的近表面对准力描述了游泳者与表面的相互作用,并用数值方法研究了表面纹理对手性和非手性微游泳者表面积累的影响。我们发现,根据游泳者的角速度和对齐力,凸障碍物可以阻碍或增强表面堆积。我们讨论了微游泳者角速度分类的潜在应用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Three-dimensional model for surface accumulation of chiral and nonchiral microswimmers.

Persistent motion of microswimmers near boundaries is known to result in surface accumulation. A way to control surface accumulation is by reducing the contact surface area between swimmers and surface by modifying its topography, typically through the application of microscale structures. In this work, we introduce a three-dimensional (3D) phenomenological model of a microswimmer navigating a volume bounded by a top and bottom surface. We describe the swimmer-surface interaction with an effective near-surface alignment force, and study numerically the effect of surface textures, modeled by convex obstacles, on the surface accumulation of chiral and nonchiral microswimmers. We find that, depending on the angular velocity of the swimmer, and the alignment force, convex obstacles can either hinder or enhance surface accumulation. We discuss potential applications to sorting of microswimmers by their angular velocity.

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来源期刊
Physical review. E
Physical review. E 物理-物理:流体与等离子体
CiteScore
4.60
自引率
16.70%
发文量
0
审稿时长
3.3 months
期刊介绍: Physical Review E (PRE), broad and interdisciplinary in scope, focuses on collective phenomena of many-body systems, with statistical physics and nonlinear dynamics as the central themes of the journal. Physical Review E publishes recent developments in biological and soft matter physics including granular materials, colloids, complex fluids, liquid crystals, and polymers. The journal covers fluid dynamics and plasma physics and includes sections on computational and interdisciplinary physics, for example, complex networks.
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