Phases of granular segregation in a binary mixture
Abstract
We present results from an extensive experimental investigation into granular segregation of a shallow binary mixture in which particles are driven by frictional interactions with the surface of a vibrating horizontal tray. Three distinct phases of the mixture are established viz; binary gas (unsegregated), segregation liquid and segregation crystal. Their ranges of existence are mapped out as a function of the system's primary control parameters using a number of measures based on Voronoi tessellation. We study the associated transitions and show that segregation can be suppressed is the total filling fraction of the granular layer, , is decreased below a critical value, , or if the dimensionless acceleration of the driving, , is increased above a value .
Cite
@article{arxiv.cond-mat/0606004,
title = {Phases of granular segregation in a binary mixture},
author = {Pedro M. Reis and Tim Sykes and Tom Mullin},
journal= {arXiv preprint arXiv:cond-mat/0606004},
year = {2009}
}
Comments
12 pages, 12 figures, submitted to Phys. Rev. E