Eglinton Joshua, Smith Mike I, Swift Michael R
School of Physics and Astronomy, University of Nottingham, Nottingham NG7 2RD, United Kingdom.
Phys Rev E. 2022 Apr;105(4-1):044609. doi: 10.1103/PhysRevE.105.044609.
We describe simulations of active Brownian particles carried out to explore how dynamics and clustering are influenced by particle shape. Our particles are composed of four disks, held together by springs, whose relative size can be varied. These composite objects can be tuned smoothly from having a predominantly concave to a convex surface. We show that even two of these composite particles can exhibit collective motion which modifies the effective Peclet number. We then investigate how particle geometry can be used to explain the phase behavior of many such particles.
我们描述了为探索动力学和聚集如何受粒子形状影响而进行的活性布朗粒子模拟。我们的粒子由四个通过弹簧连接在一起的圆盘组成，其相对大小可以变化。这些复合物体可以从主要具有凹面平滑地调整为具有凸面。我们表明，即使是两个这样的复合粒子也能表现出集体运动，从而改变有效佩克莱数。然后，我们研究粒子几何形状如何用于解释许多此类粒子的相行为。
