发表机构
Max Planck Institute for Dynamics and Self-Organization; Kyoto University; Jožef Stefan Institute（马克斯·普朗克动力学与自组织研究所; 京都大学; 约热·斯特凡研究所）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文研究手性活性表面产生的奇滑移现象，通过微扰展开分析其输运性质，发现颗粒悬浮液中的奇滑移可导致奇黏度，为奇黏度提供新机制。
AI 中文摘要
固液界面处的奇滑移，其特征是速度分量垂直于所施加的剪切应力，引入了一类新的奇输运现象，在边界处产生横向动量传递，这不同于奇黏度、奇弹性或奇扩散。该效应产生于具有持续能量输入和确定手性的手性活性表面，例如具有柔性锚定的旋转生物或合成纤毛地毯。尽管奇滑移本身是无耗散的，但其维持需要能量代价，我们通过微观模型对此进行了估算。就其取向依赖性而言，奇滑移可分为赝标量或赝矢量。我们使用微扰展开来确定具有不同对称性破缺程度的问题的阻力张量。这些张量揭示了表面手性和物体不对称性如何共同违反昂萨格对称性，但维持昂萨格-卡西米尔互易性。引人注目的是，嵌入常规牛顿体相流体中的具有奇滑移的颗粒悬浮液表现出奇黏度，为奇黏度的出现提供了一种超越现有微观模型的新最小机制。
英文摘要
Odd slip at solid-liquid interfaces, characterized by a velocity component perpendicular to the applied shear stress, introduces a novel class of odd transport phenomena with transverse momentum transfer at boundaries, distinct from odd viscosity, odd elasticity, or odd diffusivity. This effect arises on chiral active surfaces with persistent energy input and defined handedness, such as carpets of rotating biological or synthetic cilia with flexible anchoring. Although odd slip itself is dissipationless, its maintenance comes at an energetic cost, which we estimate from the microscopic model. With respect to its orientation dependence, odd slip can be classified as pseudo-scalar or pseudo-vectorial. We use a perturbative expansion to determine the resistance tensors of problems with different levels of broken symmetries. They reveal how the surface chirality and body asymmetry together violate the Onsager symmetry, but uphold the Onsager-Casimir reciprocity. Strikingly, suspensions of particles with odd slip embedded in a conventional Newtonian bulk fluid exhibit odd viscosity, providing a new minimal mechanism for its emergence beyond current microscopic models.
Comments18 pages, 4 figures
