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Updated: Jan 8, 2026

Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures

Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures

Published on: May 20, 2014

アクティブブラウン運動粒子における相共存のための二成分理論

Pablo Pérez-Bastías¹, Rodrigo Soto¹

¹Universidad de Chile, Departamento de Física, FCFM, Blanco Encalada 2008, Santiago, Chile.

Physical review. E

|December 23, 2025

Abstract:

Active Brownian particles (ABPs) serve as a minimal model of active matter systems. When ABPs are sufficiently persistent, they undergo a liquid-gas phase separation and, in the presence of obstacles, accumulate around them, forming a wetting layer. Here, we perform simulations of ABPs in a quasi-one-dimensional domain in the presence of a wall, studying the dynamics of the polarization field. Over the course of time, we observe a transition from a homogeneous (where all particles are aligned) to a heterogeneous (where particles align only at the interface) polarization regime. We propose coarse-grained equations for the density and polarization fields based on microscopic and phenomenological arguments that correctly account for the observed phenomena.

キーワード:

アクティブブラウン運動粒子活性物質偏光ダイナミクス閉じ込め粗視化方程式

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