Complex self-propelled rings: a minimal model for cell motility,Soft Matter

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Complex self-propelled rings: a minimal model for cell motility
Soft Matter ( IF 2.9 ) Pub Date : 2017-07-20 00:00:00 , DOI: 10.1039/c7sm00439g
Clara Abaurrea Velasco _{1,

2,

3,

4,

5} , Sepehr Dehghani Ghahnaviyeh _{1,

2,

3,

4,

5} , Hossein Nejat Pishkenari _{6,

7,

8,

9,

10} , Thorsten Auth _{1,

2,

3,

4,

5} , Gerhard Gompper _{1,

2,

3,

4,

5}

Affiliation

Collective behavior of active matter is observed for self-propelled particles, such as vibrated disks and active Brownian particles, as well as for cytoskeletal filaments in motile cells. Here, a system of quasi two-dimensional penetrable self-propelled rods inside rigid rings is used to construct a complex self-propelled particle. The rods interact sterically with each other and with a stationary or mobile ring via a separation-shifted Lennard-Jones potential. They either have a sliding attachment to the inside of the ring at one of their ends, or can move freely within the ring confinement. We study the inner structure and dynamics of the mobile self-propelled rings. We find that these complex particles cannot only be characterized as active Brownian particles, but can also exhibit cell-like motility: random walks, persistent motion, circling, and run-and-circle motion.

中文翻译：

复杂的自推环：细胞运动的最小模型

对于自我推进的颗粒（例如振动盘和活性布朗粒子）以及运动细胞中的细胞骨架细丝，观察到活性物质的集体行为。在这里，在刚性环内部的准二维可穿透自推进杆系统用于构造复杂的自推进粒子。杆彼此之间以及与固定环或移动环之间通过空间相互作用分离移位的Lennard-Jones势。它们或者在其一端之一处具有可滑动附连到环的内部，或者可以在环限制内自由移动。我们研究了移动自推环的内部结构和动力学。我们发现这些复杂的粒子不仅可以表征为活动的布朗粒子，而且还可以表现出类似细胞的运动性：随机游走，持续运动，盘旋和奔跑运动。

更新日期：2017-09-13

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