arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2102.05557cond-mat.softphysics.bio-phphysics.flu-dyn
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活性物质的相场模型

Phase field models of active matter

Romain Mueller, Amin Doostmohammadi

摘要:

我们提出了一个概述相场建模的活性物质系统作为一种工具,用于捕捉复杂和活跃的接口的各个方面。我们首先描述了如何在相场模型中描述不同相之间的界面,并提供了描述其演变的简单基本控制方程。对于一个简单的模型,然后我们展示了如何界面的物理性质,如表面张力和界面厚度,可以从这些方程中恢复。然后,我们解释了如何相场制剂可以耦合到各种活性物质实现和讨论连续两相活性物质的三个特定的例子:活性向列型各向同性接口,活性物质在粘弹性环境中,并在流体背景中的活性壳。最后,我们描述了如何多相场可以用来模拟活跃的细胞单层,并提出了一个一般的框架,可以应用于组织行为和集体迁移的研究。

英文摘要:

We present an overview of phase field modeling of active matter systems as a tool for capturing various aspects of complex and active interfaces. We first describe how interfaces between different phases are characterized in phase field models and provide simple fundamental governing equations that describe their evolution. For a simple model, we then show how physical properties of the interface, such as surface tension and interface thickness, can be recovered from these equations. We then explain how the phase field formulation can be coupled to various active matter realizations and discuss three particular examples of continuum biphasic active matter: active nematic-isotropic interfaces, active matter in viscoelastic environments, and active shells in fluid background. Finally, we describe how multiple phase fields can be used to model active cellular monolayers and present a general framework that can be applied to the study of tissue behaviour and collective migration.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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