Confined active particles: wall accumulation and correspondence between active and fluid systems

Abstract

Active Brownian particles (ABPs) are a generic model for synthetic active matter systems, such as active colloids, characterized by their ability to self-propel while also exhibiting Brownian motion. Under confinement, ABPs display propulsion-induced wall accumulation, a behavior that can be harnessed for microfluidic and lab-on-a-chip applications. We investigate ABPs confined in slit pores using overdamped Langevin dynamics and study their wall accumulation as a function of particle activity and slit width, at both gas and liquid densities. Furthermore, we examine the correspondence between confined ABPs and their equilibrium counterparts, confined fluid particles capable of completely wetting the slit walls.

Graphical abstract: Confined active particles: wall accumulation and correspondence between active and fluid systems

Supplementary files

Article information

Article type
Paper
Submitted
14 May 2025
Accepted
09 Sep 2025
First published
09 Sep 2025

Soft Matter, 2025, Advance Article

Confined active particles: wall accumulation and correspondence between active and fluid systems

K. Šindelka, A. Gadermeteva and M. Lísal, Soft Matter, 2025, Advance Article , DOI: 10.1039/D5SM00495K

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements