在密集的合体悬浮液中,运动性诱导的剪切加厚
A Gülce Bayram1, Fabian Jan Schwarzendahl2, Hartmut Löwen2
1FluidFrame Lab, Department of Mechanical Engineering, Bilkent University, Çankaya, 06800 Ankara, Turkey. gulce.bayram@bilkent.edu.tr.
Soft matter
|June 13, 2023
概括
活性合物悬浮物表现出独特的相位过渡. 自动推进降低了障碍所需的压力,并且可以诱导剪切系统中的剪切加厚行为,这种现象被称为动力诱导剪切加厚 (MIST).
科学领域:
- 软物质物理学 软物质物理学
- 非平衡的统计力学.
- 体科学是一种体科学.
背景情况:
- 活性体悬浮是复杂的系统,表现出丰富的集体动力学.
- 了解它们在剪切下的质行为对于应用至关重要.
- 失去平衡的系统在物理学中带来了独特的挑战和机会.
研究的目的:
- 调查自我推进对密集的体悬浮液的风湿反应的作用.
- 分析活动和剪切对扰乱过渡的综合效应.
- 探索活跃剪切系统的稳定状态质行为.
主要方法:
- 采用了粒子解析的布朗动力学模拟.
- 该研究的重点是密集的体悬浮液.
- 分析包括扰乱过渡和稳定状态的风湿学.
主要成果:
- 自动推进显著降低了扰乱过渡的压力障碍.
- 粒子运动性使被动悬浮变流体.
- 活性悬挂在低自动推进时表现出剪切薄化,在更高自动推进时表现出剪切厚化,这是由于动力诱导集群 (MIST) 的原因.
结论:
- 自动推进从根本上改变了合悬浮液的相位过渡和质学.
- 移动性诱导的剪切加厚 (MIST) 是在剪切活性合体中新发现的现象.
- 这一发现为量身定制合材料的质性质提供了一条途径.
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