Glassy dynamics in dense systems of active particles
Glassy dynamics in dense systems of active particles
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DOI：
10.1063/1.5093240
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发表时间：
2019-05-28
影响因子：
4.4
通讯作者：
Szamel, Grzegorz
中科院分区：
文献类型：
--
作者：
Berthier, Ludovic;Flenner, Elijah;Szamel, Grzegorz
尽管被指定为活性物质的材料的多样性，但几乎所有的活性系统在拥挤和活性竞争时都经历一种形式的动态逮捕，这让人想起在经历玻璃化转变的胶体和分子流体中观察到的动态逮捕。我们提出了一个简短的观点，最近和正在进行的努力，以了解活动如何竞争与其他物理相互作用在密集的系统。我们回顾了最近的实验工作，发现了经典的签名玻璃动力学和有趣的新现象，在大密度的活性材料。我们讨论了一个最小模型的自推进粒子之间的竞争粒子间的相互作用，拥挤，和自推进可以非常详细地研究。我们提出了更复杂的模型，其中包括一些额外的，材料特定的成分。我们提供了一些一般的观点致密的活性材料，建议未来的研究方向，特别是理论工作。由AIP Publishing授权出版。
Despite the diversity of materials designated as active matter, virtually all active systems undergo a form of dynamic arrest when crowding and activity compete, reminiscent of the dynamic arrest observed in colloidal and molecular fluids undergoing a glass transition. We present a short perspective on recent and ongoing efforts to understand how activity competes with other physical interactions in dense systems. We review recent experimental work on active materials that uncovered both classic signatures of glassy dynamics and intriguing novel phenomena at large density. We discuss a minimal model of self-propelled particles where the competition between interparticle interactions, crowding, and self- propulsion can be studied in great detail. We present more complex models that include some additional, material-specific ingredients. We provide some general perspectives on dense active materials, suggesting directions for future research, in particular, for theoretical work. Published under license by AIP Publishing.