Revealing the characteristic length of random close packing <i>via</i> critical-like random pinning.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 35167643.
- Also identified by DOI 10.1039/d1sm01697k.
- No licence information is recorded for this record.
- Because redistribution is not established, this page shows the abstract only. Follow the links below for the full text.
Abstract
By randomly pinning particles in fluidized states and finding the local energy minima, we form static packings of mono-disperse disks that resemble random close packing, when only <i>n</i><sub>c</sub> = 2.6% of the particles are pinned. The packings are isostatic and exhibit typical critical scalings of the jamming transition. The non-triviality of <i>n</i><sub>c</sub> is manifested mainly in two aspects. First, <i>n</i><sub>c</sub> acts as a critical point, leading to bifurcated critical scalings in its vicinity. The criticality of <i>n</i><sub>c</sub> is also demonstrated in the packings of weakly polydisperse disks. Second, <i>n</i><sub>c</sub> sets a length scale in agreement with the characteristic length of random close packing. With robust evidence, we show that this agreement is generally true for both mono- and poly-disperse particles and in both two and three dimensions. The randomness inherited from fluidized states by random pinning thus interprets the randomness of random close packing from a unique perspective.