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, $C$, is decreased below a critical value, $C_c$, or if the dimensionless acceleration of the driving, $\gamma$, is increased above a value ${\gamma }_c$.

12 pages, 12 figures, submitted to Phys. Rev. E

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Cited by in corpus (5)

• Demixing of active particles in the presence of external fields
• Stripe formation in horizontally oscillating granular suspensions
• Segregation pattern reorientation of granular mixture on horizontally oscillating tray
• Asymmetric and Long Range Interactions in Shaken Granular Media
• Striped Patterns in Radially Driven Suspensions with Open Boundaries