title: Correlation between particle motion and Voronoi-cell-shape fluctuations during the compaction of granular matter.
abstract: We track particle motions in a granular material subjected to compaction using a laser scattering-based imaging method where compaction is achieved through thermal cycling. Particle displacements in this jammed fluid correlate strongly with rearrangements of the Voronoi cells defining the local environment about the particles, similar to previous observations of Rahman on cooled liquids. Our observations provide further evidence of commonalities between particle dynamics in granular matter close to jamming and supercooled liquids.
authors.affiliation: Department of Physics, and IREAP, University of Maryland, College Park, Maryland 20742, USA. scsumd@umd.edu
authors.forename: Steven
authors.initials: S
authors.lastname: Slotterback
authors.forename: Masahiro
authors.initials: M
authors.lastname: Toiya
authors.forename: Leonard
authors.initials: L
authors.lastname: Goff
authors.forename: Jack F
authors.initials: JF
authors.lastname: Douglas
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Losert