利用谐波陷阱推断活性粒子间的相互作用
Inferring interactions between active particles using harmonic traps
- Heinrich-Heine-Universität Düsseldorf（杜塞尔多夫大学）
机构由 AI 辅助整理，请以论文原文为准。
AI总结：
本文提出利用谐波陷阱中活性Janus粒子的稳态位置分布来推断其相互作用力与力矩，无需取向信息，为构建动态先进材料提供基础。
AI中文摘要：
量化活性Janus粒子之间的相互作用仍然是描述其集体行为所需解决的一个挑战。受光子力显微镜装置的启发，在该装置中两个活性Janus粒子被分别限制在独立的光学镊子中，我们推导出每个粒子的稳态概率分布，该分布携带了成对趋化相互作用的特征，并可推广到更广泛的相互作用类型。这种方法使我们能够仅从位置构型推断相互作用力和力矩，而无需了解粒子的取向。揭示活性粒子之间依赖于距离的相互作用，对于将它们用作具有动态特性的先进材料的构建模块至关重要。
英文摘要：
Quantifying the interactions between active Janus particles remains a challenge that needs to be addressed to describe their collective behaviour. Inspired by a photonic force microscopy setup where two active Janus particles are confined in separate optical tweezers, we derive the steady-state probability distribution of each particle bearing signatures of the pair phoretic interaction, which can be generalised to a broader range of interactions. This approach allows us to infer interaction forces and torques from positional configurations without any knowledge of the particle orientations. Unraveling the distance-dependent interaction between active particles is essential to harnessing them as building blocks for advanced materials with dynamic properties.
