Self-Propelled Rods: Insights and Perspectives for Active Matter

By M. Bär, R. Großmann, Sebastian Heidenreich, F. Peruani. Annual Review of Condensed Matter Physics, 2019

232 citations recorded by the source corpus.

A wide range of experimental systems including gliding, swarming and swimming bacteria, in vitro motility assays, and shaken granular media are commonly described as self-propelled rods. Large ensembles of those entities display a large variety of self-organized, collective phenomena, including the formation of moving polar clusters, polar and nematic dynamic bands, mobility-induced phase separation, topological defects, and mesoscale turbulence, among others. Here, we give a brief survey of experimental observations and review the theoretical description of self-propelled rods. Our focus is on the emergent pattern formation of ensembles of dry self-propelled rods governed by short-ranged, contact mediated interactions and their wet counterparts that are also subject to long-ranged hydrodynamic flows. Altogether, self-propelled rods provide an overarching theme covering many aspects of active matter containing well-explored limiting cases. Their collective behavior not only bridges the well-studied regimes of polar self-propelled particles and active nematics, and includes active phase separation, but also reveals a rich variety of new patterns.

Subfields: Condensed Matter Physics, Materials Chemistry, Mechanical Engineering

View Paper: https://www.semanticscholar.org/paper/0a05d9f5efd29e7dd8f4c15cd1f5bf73618ee6ac

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Condensed Matter Physics

1. Jaume Casademunt
2. Ricard Alert
3. J. Joanny

In Materials Chemistry

1. J. Joanny
2. Jaume Casademunt
3. Ricard Alert

In Mechanical Engineering

1. J. Joanny
2. Marco Dorigo
3. Vito Trianni
4. Levent Bayindir

Citations in the corpus

• Swarm Robotics: Past, Present, and Future (2021, background): “Solutions that design the hardware to present self-organizing properties are also plausible [83], [84] although, in this case, it may be difficult to obtain flexible and adaptive behavior.”
• Active Turbulence (2021, background): “For example, simulations of self-propelled particles, either rods with steric interactions [15, 49] or points with competing alignment interactions [50], yield a number of phases including irregular vortex patterns similar to the experimental observations (Fig.”