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- W2997759347 abstract "Among the family of hard convex lens-shaped particles (lenses), the one with aspect ratio equal to 2/3 is `optimal' in the sense that the maximally random jammed (MRJ) packings of such lenses achieve the highest packing fraction $phi_{rm MRJ} simeq 0.73$. This value is only a few percent lower than $phi_{rm DKP} = 0.76210dots$, the packing fraction of the corresponding densest-known crystalline (degenerate) packings. By exploiting the appreciably reduced propensity that a system of such optimal lenses has to positionally and orientationally order, disordered packings of them are progressively generated by a Monte Carlo method-based procedure from the dilute equilibrium isotropic fluid phase to the dense nonequilibrium MRJ state. This allows one to closely monitor how the (micro)structure of these packings changes in the process of formation of the MRJ state. The gradual changes undergone by the many structural descriptors calculated can coherently and consistently be traced back to the gradual increase in contacts between the hard particles until the isostatic mean value of 10 contact neighbors per lens is reached at the effectively hyperuniform MRJ state. Compared to the MRJ state of hard spheres, the MRJ state of such optimal lenses is denser (less porous), more disordered, and rattler-free. This set of characteristics makes them good glass formers. It is possible that this conclusion may also hold for other hard convex uniaxial particles with a correspondingly similar aspect ratio, be they oblate or prolate, and that, by using suitable biaxial variants of them, that set of characteristics might further improve." @default.
- W2997759347 created "2020-01-10" @default.
- W2997759347 creator A5053040631 @default.
- W2997759347 creator A5062172005 @default.
- W2997759347 date "2019-12-24" @default.
- W2997759347 modified "2023-10-03" @default.
- W2997759347 title "Hard convex lens-shaped particles: Characterization of dense disordered packings" @default.
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- W2997759347 doi "https://doi.org/10.1103/physreve.100.062902" @default.
- W2997759347 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/31962401" @default.
- W2997759347 hasPublicationYear "2019" @default.
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