Near the jamming transition of elastic active cells: A sharp-interface approach

TL;DR

This paper investigates the jamming transition in elastic active cells using a sharp interface model, analyzing how cell concentration, activity, and elasticity influence the transition and related properties.

Contribution

It introduces a sharp interface modeling approach to study the jamming transition and identifies the Voronoi cell shape as an order parameter at any concentration.

Findings

Determined the jamming transition point under various conditions.

Analyzed effective diffusion and bond correlations near the transition.

Established Voronoi cell shape as a universal order parameter.

Abstract

We use a sharp interface model for active cells to study the jamming transition point and behavior near it by varying cell concentration, active velocity and elasticity, including a binary mixture of soft and stiff cells. We determine the jamming transition point, as well as behavior near the transition,including the effective diffusion, and sixfold bond correlations. Finally, we expand on previous studies by showing the Voronoi dimensionless cell shape can be treated as an order parameter at any concentration.