Clustering transitions in vibro-fluidized magnetized granular materials

Abstract

We study the effects of long range interactions on the phases observed in cohesive granular materials. At high vibration amplitudes, a gas of magnetized particles is observed with velocity distributions similar to non-magnetized particles. Below a transition temperature compact clusters are observed to form and coexist with single particles. The cluster growth rate is consistent with a classical nucleation process. However, the temperature of the particles in the clusters is significantly lower than the surrounding gas, indicating a breakdown of equipartition. If the system is quenched to low temperatures, a meta-stable network of connected chains self-assemble due to the anisotropic nature of magnetic interactions between particles.

4 pages, 5 figures

References in corpus (3)

• Breakdown of Energy Equipartition in a 2D Binary Vibrated Granular Gas
• Angle of repose and segregation in cohesive granular matter
• Velocity correlations in dense granular gases

Cited by in corpus (19)

• Patterns and Collective Behavior in Granular Media: Theoretical Concepts
• Size separation in vibrated granular matter
• Structure formation in electromagnetically driven granular media
• Velocity Distributions of Granular Gases with Drag and with Long-Range Interactions
• Magnetic ghosts and monopoles
• Cluster-induced deagglomeration in dilute gravity-driven gas-solid flows of cohesive grains
• Structure formation in binary colloids
• Molecular dynamics simulations of the dipolar-induced formation of magnetic nanochains and nanorings
• From the granular Leidenfrost state to buoyancy-driven convection
• Transition from a dissipative to a quasi-elastic system of particles with tunable repulsive interactions
• Phase Transition in a Out-of-equilibrium Monolayer of Dipolar Vibrated Grains
• Programming Interactions in Magnetic Handshake Materials
• Transition to a labyrinthine phase in a driven granular medium
• The inelastic Takahashi hard-rod gas
• Minimal Model for Dynamic Bonding in Colloidal Transient Networks
• Self-assembly and percolation in magnetic colloids
• Wave spectroscopy in a driven granular material
• Order-Disorder structural transition in a confined fluid
• Direct observation of crystal nucleation and growth in a quasi-two-dimensional nonvibrating granular system