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在惯性活性物质中的聚合相分离.
Nan Luo1,2, Longfei Li1, Mingcheng Yang1,2
1Institute of Physics, Beijing National Laboratory for Condensed Matter Physics and Laboratory of Soft Matter Physics, Chinese Academy of Sciences, Beijing 100190, China.
Physical review letters
|November 7, 2025
概括
我们观察到毫米大小的磁滚子中的聚合相位分离,这是惯性活性物质中一种新的集体运动. 这种由不弹性碰撞驱动的现象对生物群和机器人群产生影响.
科学领域:
- 复杂系统的物理 复杂系统的物理
- 活动物质物理学 活动物质物理学
- 集体行为研究研究集体行为.
背景情况:
- 运动体的大群体表现出复杂的集体行为.
- 了解活性物质中的新兴现象对于基础科学和技术应用都至关重要.
研究的目的:
- 在惯性主导的宏观物质中研究集体运动.
- 模拟和理解磁滚子系统中的合相分离.
主要方法:
- 利用了具有可调节行为的毫米尺寸磁滚子模型系统.
- 结合实验观测与基于代理的模拟和现象学理论.
- 分析了粒子交换动态和共存相的有效温度.
主要成果:
- 观察到一级的集群相隔,通过气相传播的均集群.
- 在聚合和气相中展示了明显的粒子交换动态和非平衡的有效温度.
- 确定不弹性碰撞是密度和极运动之间的正反的驱动机制.
结论:
- 在惯性活性物质中发现了一种新的集体运动模式.
- 这些发现提供了关于由不弹性碰撞驱动的聚合相位分离的见解.
- 潜在的应用包括控制生物群和设计协调的机器人群.
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