Group formation and cohesion of active particles with visual perception-dependent motility
Group formation and cohesion of active particles with visual perception-dependent motility
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DOI：
10.1126/science.aau5347
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发表时间：
2019-04-05
期刊：
影响因子：
56.9
通讯作者：
Bechinger, Clemens
中科院分区：
文献类型：
--
作者：
Lavergne, Francois A.;Wendehenne, Hugo;Bechinger, Clemens
生命系统中群体的形成通常是由排斥、排列和吸引相互作用的微妙平衡引起的。我们发现，一个纯粹的运动性变化的个人在回应他们的同龄人的视觉感知诱导群体的形成和凝聚力。我们在一个真实的活性粒子系统中测试了这一原理，该系统的运动性由外部反馈回路控制。对于狭窄的视野，个体聚集成有凝聚力的非极化群体，而不需要主动重新定向。对于更宽的视野，可以通过降低响应阈值来实现一致性。我们期望这种运动诱导的内聚机制不仅与生命系统的自组织有关，而且还与鲁棒性和可扩展的自治系统的设计有关。
Group formation in living systems typically results from a delicate balance of repulsive, aligning, and attractive interactions. We found that a mere motility change of the individuals in response to the visual perception of their peers induces group formation and cohesion. We tested this principle in a real system of active particles whose motilities are controlled by an external feedback loop. For narrow fields of view, individuals gathered into cohesive nonpolarized groups without requiring active reorientations. For wider fields of view, cohesion could be achieved by lowering the response threshold. We expect this motility-induced cohesion mechanism to be relevant not only for the self-organization of living systems, but also for the design of robust and scalable autonomous systems.