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.
Cite
@article{arxiv.cond-mat/0203488,
title = {Clustering transitions in vibro-fluidized magnetized granular materials},
author = {Daniel L. Blair and A. Kudrolli},
journal= {arXiv preprint arXiv:cond-mat/0203488},
year = {2009}
}
Comments
4 pages, 5 figures