Activity-induced phase separation and self-assembly in mixtures of active and passive particles.
Activity-induced phase separation and self-assembly in mixtures of active and passive particles.
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活性和被动颗粒混合物中活性诱导的相分离和自组装
DOI：
10.1103/physrevlett.114.018301
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发表时间：
2015
影响因子：
8.6
通讯作者：
M. E. Cates
中科院分区：
文献类型：
--
作者：
J. Stenhammar;R. Wittkowski;D. Marenduzzo;M. E. Cates
我们研究了活性物质（即，自推进）和被动等距布朗粒子通过布朗动力学模拟和理论。在一个纯粹的主动系统中，运动的活性成分触发相分离成一个密集和稀相;在密集相，我们进一步发现主动-被动隔离，与“筏”的被动粒子在“海”的活性粒子。我们发现，从最初的无序混合物的相分离可以发生少至15%的颗粒是活跃的。最后，我们表明，在一个合适的完全隔离的初始状态下制备的系统可重复地自组装一个主动的“电晕”，这引发了被动的核心通过启动压缩波的结晶。我们的研究结果是相关的实验追求定向自组装使用活性粒子。
We investigate the phase behavior and kinetics of a monodisperse mixture of active (i.e., self-propelled) and passive isometric Brownian particles through Brownian dynamics simulations and theory. As in a purely active system, motility of the active component triggers phase separation into a dense and a dilute phase; in the dense phase, we further find active-passive segregation, with “rafts” of passive particles in a “sea” of active particles. We find that phase separation from an initially disordered mixture can occur with as little as 15% of the particles being active. Finally, we show that a system prepared in a suitable fully segregated initial state reproducibly self-assembles an active “corona,” which triggers crystallization of the passive core by initiating a compression wave. Our findings are relevant to the experimental pursuit of directed self-assembly using active particles.
(±)-Scandine的合成研究
DOI：
--
发表时间：
2011
期刊：
影响因子：
--
作者：
林佑次郎
通讯作者：
林佑次郎
DOI：
--
发表时间：
2006
期刊：
--
影响因子：
--
作者：
Iroon Polytechniou-
通讯作者：
Iroon Polytechniou-