活性界面的非对称涨落与自折叠
Asymmetric fluctuations and self-folding of active interfaces
AI总结：
该研究针对被动流体与微管基活性流体的界面，结合实验、模拟与理论揭示活性流驱动的非对称界面涨落机制，发现高活性下界面自折叠形成泡沫状相，阐明活性应力对液-液界面特性的调控作用。
摘要：
我们研究了分隔被动流体与基于微管的活性流体的界面结构与动力学。类湍流活性流驱动了大幅界面涨落，这类涨落在正曲率与负曲率区域间表现出显著的非对称性。实验、数值模拟与理论论证揭示了界面如何打破基本弯曲不稳定性的空间对称性，从而生成导致非对称界面涨落的局部涡旋流。界面形变幅度随活性增强而增大：在高活性极限下，界面发生自折叠，内陷形成被动液滴并产生泡沫状相，其中活性流体被被动液滴贯穿。这些结果表明活性应力如何调控柔软、可变形、可重构的液-液界面的结构、动力学与破碎过程。
英文摘要：
We study the structure and dynamics of the interface separating a passive fluid from a microtubule-based active fluid. Turbulent-like active flows power giant interfacial fluctuations, which exhibit pronounced asymmetry between regions of positive and negative curvature. Experiments, numerical simulations, and theoretical arguments reveal how the interface breaks up the spatial symmetry of the fundamental bend instability to generate local vortical flows that lead to asymmetric interface fluctuations. The magnitude of interface deformations increases with activity: In the high activity limit, the interface self-folds invaginating passive droplets and generating a foam-like phase, where active fluid is perforated with passive droplets. These results demonstrate how active stresses control the structure, dynamics, and break-up of soft, deformable, and reconfigurable liquid-liquid interfaces.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
