Emerging activity in bilayered dispersions with wake-mediated interactions.
Emerging activity in bilayered dispersions with wake-mediated interactions.
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DOI：
10.1063/1.4953225
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发表时间：
2015-07
期刊：
影响因子：
--
通讯作者：
J. Bartnick;A. Kaiser;H. Löwen;A. Ivlev
中科院分区：
文献类型：
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作者：
J. Bartnick;A. Kaiser;H. Löwen;A. Ivlev
在具有尾迹相互作用的双层粒子系统中，不同层粒子之间的有效作用力的作用-反应对称性被打破。在相当一般的条件下，我们证明了，如果相互作用的非互易性超过一定的阈值，这就产生了自推进的布朗粒子团簇的活跃弥散。新出现的活动促进了不寻常的熔化情景和在稠密流体中的巨大扩散性。我们的结果是通过计算机模拟和解析理论得到的，并可以在胶体分散和复杂等离子体的实验中得到验证。
In a bilayered system of particles with wake-mediated interactions, the action-reaction symmetry for the effective forces between particles of different layers is broken. Under quite general conditions we show that, if the interaction nonreciprocity exceeds a certain threshold, this creates an active dispersion of self-propelled clusters of Brownian particles. The emerging activity promotes unusual melting scenarios and an enormous diffusivity in the dense fluid. Our results are obtained by computer simulation and analytical theory and can be verified in experiments with colloidal dispersions and complex plasmas.