Issue 17, 2014

Aspects of jamming in two-dimensional athermal frictionless systems

Abstract

In this work we provide an overview of jamming transitions in two dimensional systems focusing on the limit of frictionless particle interactions in the absence of thermal fluctuations. We first discuss jamming in systems with short range repulsive interactions, where the onset of jamming occurs at a critical packing density and where certain quantities show a divergence indicative of critical behavior. We describe how aspects of the dynamics change as the jamming density is approached and how these dynamics can be explored using externally driven probes. Different particle shapes can produce jamming densities much lower than those observed for disk-shaped particles, and we show how jamming exhibits fragility for some shapes while for other shapes this is absent. Next we describe the effects of long range interactions and jamming behavior in systems such as charged colloids, vortices in type-II superconductors, and dislocations. We consider the effect of adding obstacles to frictionless jamming systems and discuss connections between this type of jamming and systems that exhibit depinning transitions. Finally, we discuss open questions such as whether the jamming transition in all these different systems can be described by the same or a small subset of universal behaviors, as well as future directions for studies of jamming transitions in two dimensional systems, such as jamming in self-driven or active matter systems.

Graphical abstract: Aspects of jamming in two-dimensional athermal frictionless systems

Article information

Article type
Review Article
Submitted
18 Dec 2013
Accepted
21 Feb 2014
First published
21 Feb 2014

Soft Matter, 2014,10, 2932-2944

Aspects of jamming in two-dimensional athermal frictionless systems

C. Reichhardt and C. J. O. Reichhardt, Soft Matter, 2014, 10, 2932 DOI: 10.1039/C3SM53154F

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