Cooperative motion of active Brownian spheres in three-dimensional dense suspensions
By A. Wysocki, Roland G. Winkler, Gerhard Gompper. 2013
204 citations recorded by the source corpus.
The structural and dynamical properties of suspensions of self-propelled Brownian particles of spherical shape are investigated in three spatial dimensions. Our simulations reveal a phase separation into a dilute and a dense phase, above a certain density and strength of self-propulsion. The packing fraction of the dense phase approaches random close packing at high activity, yet the system remains fluid. Although no alignment mechanism exists in this model, we find long-lived cooperative motion of particles in the dense regime. This behavior is probably due to an interface-induced sorting process. Spatial displacement correlation functions are nearly scale free for systems with densities close to or above the glass transition density of passive systems.
Subfields: Condensed Matter Physics, Materials Chemistry, Mechanical Engineering
View Paper: https://www.semanticscholar.org/paper/4f549cda8a5e3a89395cb001a286fc9a3397feec
How researchers see this paper
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In Condensed Matter Physics
- M. Cristina Marchetti
- Roland G. Winkler
- Gerhard Gompper
- M. E. Cates
- J. Elgeti
- J. Tailleur
- Y. Fily
- Alexandre Solon
In Materials Chemistry
- M. Cristina Marchetti
- Roland G. Winkler
- Gerhard Gompper
- J. Elgeti
- M. E. Cates
- J. Tailleur
- Y. Fily
- Alexandre Solon
In Mechanical Engineering
- Roland G. Winkler
- M. Cristina Marchetti
- M. E. Cates
- Gerhard Gompper
- J. Elgeti
- J. Tailleur
- Alexandre Solon
- Y. Fily
Citations in the corpus
- Minimal model of active colloids highlights the role of mechanical interactions in controlling the emergent behavior of active matter (2015, background): “often see strong clustering, but not complete phase separation [17, 8], MIPS has now been seen in numerical simulations for a variety of repulsive interaction, ranging from soft harmonic potential to WCA and hard spheres, in both two and three dimensions [21, 44, 25].”
- Pressure is not a state function for generic active fluids (2014, background): “, Microscopic theory for the phase separation of self-propelled repulsive disks, EPL 103, 30008 (2013) [34] Wysocki, A.”
- Physics of microswimmers—single particle motion and collective behavior: a review (2014, background): “Simulations reveal a far richer behavior of selfpro- 38 pelled spheres in three-dimensions (Stenhammar et al., 2014; Wysocki et al., 2014).”