Collective Motion of Vibrated Polar Disks

2010/04/09 by Julien Deseigne, Olivier Dauchot, Hugues Chatè · 2 citations
Physics and Astronomy · #cond-mat.soft

paper · pdf · doi:10.1103/physrevlett.105.098001

published as Phys. Rev. Lett. 105, 098001 (2010) · 4 pages, 4 figures

arxiv created 2010/04/09 · arxiv updated 2012/07/12

Abstract

We experimentally study a monolayer of vibrated disks with a built-in polar asymmetry which enables them to move quasi-balistically on a large persistence length. Alignment occurs during collisions as a result of self-propulsion and hard core repulsion. Varying the amplitude of the vibration, we observe the onset of large-scale collective motion and the existence of giant number fluctuations with a scaling exponent in agreement with the predicted theoretical value.

Cited by

• Control of collective activity to crystallize an oscillator gas
• Stability of flocking in the reciprocal two-species Vicsek model: Effects of relative population, motility, and noise
• Pogobot: an Open-Source, Low-Cost Robot for Swarm Robotics and Programmable Active Matter
• Lift force in chiral, compressible granular matter

Related

• Collective dynamics of densely confined active polar disks with self- and mutual alignment
• Collective motion of energy depot active disks
• Anomalous large-scale collective motion in granular Brownian vibrators
• Clusters and collective motions in Brownian vibrators
• Emergence of macroscopic directed motion in populations of motile colloids