Expanding Active Matter to the Third Dimension: Exploring Short and Long-Range Particle-Wall Interactions
Soft Condensed Matter
2025-05-02 v1
Abstract
Most active colloid experiments are quasi-2D. Here a 3D density-matched solution of active particles propelled and aligned with an AC electric field uniquely facilitates measurement of short and long-range particle-wall interactions. Near-wall mobility is reduced by Stokes drag and local electric-field distortion. Long-range attractions concentrate particles at upper and lower walls at a ratio dependent on particle orientation and rate proportional to speed and confinement. This approach may be extended to other active systems to understand particle-wall interactions and non-equilibrium phenomena.
Cite
@article{arxiv.2505.00141,
title = {Expanding Active Matter to the Third Dimension: Exploring Short and Long-Range Particle-Wall Interactions},
author = {Sandeep Ramteke and Jordan Dehmel and Touvia Miloh and Jarrod Schiffbauer and Alicia Boymelgreen},
journal= {arXiv preprint arXiv:2505.00141},
year = {2025}
}
Comments
Number of pages 8 and number of figures 4