English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Dense random packings of hard particles are useful models of granular mediaand are closely related to the structure of nonequilibrium low-temperatureamorphous phases of matter. Most work has been done for random jammed packingsof spheres, and it is only recently that corresponding packings of nonsphericalparticles (e.g., ellipsoids) have received attention. Here we report a study ofthe maximally random jammed (MRJ) packings of binary superdisks andmonodispersed superballs whose shapes are defined by |x_1|^2p+...+|x_2|^2p<=1with d = 2 and 3, respectively, where p is the deformation parameter withvalues in the interval (0, infinity). We find that the MRJ densities of suchpackings increase dramatically and nonanalytically as one moves away from thecircular-disk and sphere point. Moreover, the disordered packings arehypostatic and the local arrangements of particles are necessarily nontriviallycorrelated to achieve jamming. We term such correlated structures "nongeneric".The degree of "nongenericity" of the packings is quantitatively characterizedby determining the fraction of local coordination structures in which thecentral particles have fewer contacting neighbors than average. We also showthat such seemingly special packing configurations are counterintuitively notrare. As the anisotropy of the particles increases, the fraction of rattlersdecreases while the minimal orientational order increases. These novelcharacteristics result from the unique rotational symmetry breaking manner ofthe particles.

Novel Features Arising in the Maximally Random Jammed Packings of Superballs