运动诱导相位分离是麦克斯韦式流体,具有延伸和非单调的交叉.
José Martín-Roca1,2, Kristian Thijssen3, Tyler Shendruk4
1Universidad Complutense de Madrid, Departamento de Estructura de la Materia, Física Térmica y Electrónica, Madrid, Spain.
Physical review letters
|December 12, 2025
概括
这项研究揭示了经过运动诱导相分离 (MIPS) 的活性悬浮物的复杂机械性质. 研究表明,这些系统表现为粘弹性流体,具有与活动水平和相位过渡相关的独特的风质反应.
科学领域:
- 体和接口科学科学
- 软物质物理学 软物质物理学
- 材料工程 材料工程是指材料工程.
背景情况:
- 运动诱导相分离 (MIPS) 是活性体悬浮物中的一个关键现象,但其机械性质尚不清楚.
- 活跃系统,与平衡系统不同,表现出由自我推进驱动的独特行为.
- 了解质学对于在材料科学中利用活性悬浮物至关重要.
研究的目的:
- 为了研究在剪切下活性合物悬浮物的质性行为.
- 探索MIPS如何影响这些系统的机械性能.
- 为了比较活跃MIPS与被动系统的风湿学.
主要方法:
- 在恒定和振荡式剪切下模拟伪硬活跃的布朗粒子.
- 分析各种密度和活动水平的存储和损失模块.
- 与液态气体共存中的被动粒子系统进行比较.
主要成果:
- 呈现MIPS的活性悬浮物表现为粘弹性麦克斯韦式流体.
- 在广泛的密度和活动中观察到剪切稀释.
- 交叉频率显示了对活动的非单调依赖,与被动系统不同.
结论:
- 活性力和失平衡阶段对悬浮的机械性能产生重大影响.
- MIPS系统的风湿反应与被动类型不同.
- 这项工作为材料应用提供了对活性物质机制的关键见解.
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