活跃的布朗粒子滴的部分和完全湿透
Francesco Turci1, Robert L Jack2,3, Nigel B Wilding1
1H. H. Wills Physics Laboratory, University of Bristol, Tyndall Avenue, Bristol BS8 1TL, UK. f.turci@bristol.ac.uk.
Soft matter
|February 12, 2024
概括
活跃的布朗粒子在排斥性屏障上表现出湿透过渡,类似于被动流体. 研究人员确定了关键状态和接触角度,提供了对活性流体表面张力的洞察.
科学领域:
- 软物质物理学 软物质物理学
- 流体动力学 流体动力学
- 统计力学 统计力学
背景情况:
- 活跃的布朗粒子 (ABP) 是自我驱动实体的模型系统.
- 湿现象描述了液体在接口上的行为.
- 了解活性物质的行为对于各种应用至关重要.
研究的目的:
- 在形几何学中的排斥性电位屏障上研究活跃的布朗粒子的湿行为.
- 探索部分湿和完全湿状态之间的过渡作为屏障高度的函数.
- 为了比较活性流体与平衡系统的行为,并讨论表面张力定义的含义.
主要方法:
- 活跃布朗粒子的数值模拟.
- 对滴水配置,接触角度和密度配置的分析.
- 与Lennard-Jones流体和轮模型进行液体-蒸汽接口的比较.
主要成果:
- 观察到部分和完全湿的状态之间的过渡,类似于被动流体的表面相变.
- 接触角度分析显示,在 cos{\displaystyle \mathrm {s} }θ) = 1 时有湿化过渡,在 cos{\displaystyle \mathrm {s} }θ) = 0 时有中性状态.
- 描述了部分湿状态中的密度概况和波动.
结论:
- 活跃的布朗粒子湿行为可以模仿平衡系统.
- 该研究为定义活性流体表面张力提供了一个框架.
- 结果提供了关于活性物质接口的基本物理学的见解.
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