活跃串流体和凝是由二极活跃的布朗粒子在3D中形成的
Maria Kelidou1, Mohammad Fazelzadeh1, Baptiste Parage1
1Institute of Theoretical Physics, University of Amsterdam, Amsterdam, The Netherlands.
The Journal of chemical physics
|September 13, 2024
概括
活跃的自行磁粒子形成动态链条和网络. 增加的活动可以破坏聚合,导致活性液体和凝中的粒子运动增加.
科学领域:
- 软物质物理学 软物质物理学
- 活体物质系统是什么
- 统计力学 统计力学
背景情况:
- 具有磁极二极体的自行粒子在自然界 (磁触动细菌) 和工程系统 (活性合物,微机器人) 中都存在.
- 了解自推力和磁二极体相互作用对三维 (3D) 自组装的综合影响至关重要,但仍然有限.
研究的目的:
- 在3D中研究活跃二极粒子的动态自我组装.
- 阐明自我推进 (活动) 和磁双极相互作用对粒子聚合和动态的影响.
主要方法:
- 布朗动力学模拟用于在3D低密度状态下建模活性二极粒子.
- 该研究系统地改变了双极合强度和活性力大小.
主要成果:
- 在高活动时,自推力克服双极吸引力,防止链条和网络形成.
- 适度活动导致有链和环的活性流体的形成.
- 强大的二极合与中度活动相结合,产生活性凝,这是一个透的活性链网络,具有增强的粒子扩散.
结论:
- 开发了一个状态图,绘制基于二极合和活动水平的系统行为.
- 粒子活动显著影响聚合物拓,从分支到离散链和环的结构过渡.
- 与被动双极系统相比,活跃双极系统表现出增强的翻译和旋转扩散.
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