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在活性晶体旋转器中滑动和流体化

Abraham Mauleon-Amieva^1,2, Tanniemola B Liverpool³, Ian Williams⁴

¹H. H. Wills Physics Laboratory, University of Bristol, Bristol BS8 1TL, UK.

|August 29, 2025

概括

六角晶体中的活性合体表现出棒滑动性,在静态和滑动状态之间进行过渡. 这种行为为纳米摩擦和活性物质设计提供了洞察力.

科学领域:

物理
材料科学
软物质物理学

背景情况:

在平衡系统中,可比性控制了纳米尺度的摩擦和晶体产量.
在研究活性物质方面,正在出现相称性概念.
活跃的体提供了一个模型系统来探索超越平衡物理的现象.

研究的目的:

开发一个实验平台和在封闭晶体中的活性合体的理论框架.
研究粒子活动与晶体结构之间的相互作用.
了解新奇的动态,如自剪,流转,和活跃的棒滑行为.

主要方法:

使用圆形形状的昆克滚筒实验实现活性合晶体.
专注于61个粒子的完美六角晶体.
理论描述,使用离散的活性水力学模型和扩展的Frenkel-Kontorova (FK) 模型.

主要成果:

观察到粒子固体和自我推进之间的竞争导致自我剪切和流量逆转.
发现了活跃的棒滑动力学,其特点是相称的静态和不相称的自滑状态之间的过渡.
在自动滑动过程中发现活动诱导的化和局部缺陷.

结论:

活跃的合晶体表现出丰富的动态,包括由自我推进驱动的棒滑行为.
这些发现为了解活性固体及其潜在应用提供了一个模型系统.
这项研究提供了使用活性物质的纳米级组装和机器人的设计原理.

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