Relaxation of saturated random sequential adsorption packings of discorectangles aligned on a line

Relaxation of the packing of elongated particles (discorectangles) aligned on a line was studied numerically. The aspect ratio (length-to-width ratio) for the discorectangles was varied within the range \(\varepsilon \in [1;50]\). The initial jamming (saturated) state was produced using the basic va...

Full description

Saved in:
Bibliographic Details
Published in:arXiv.org 2021-09
Main Authors: Lebovka, Nikolai I, Tatochenko, Mykhailo O, Vygornitskii, Nikolai V, Yuri Yu Tarasevich
Format: Article
Language:English
Subjects:
Adsorption
Aspect ratio
Diffusion
Distribution functions
Jamming
Order parameters
Tracer particles
Transport properties
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Relaxation of the packing of elongated particles (discorectangles) aligned on a line was studied numerically. The aspect ratio (length-to-width ratio) for the discorectangles was varied within the range \(\varepsilon \in [1;50]\). The initial jamming (saturated) state was produced using the basic variant of the random sequential adsorption (RSA) model with random positions and orientations of particles. The relaxation was performed by allowing rotational and translational diffusion motions of the particles wile their centers remained located on the line. The effects of the aspect ratio \(\varepsilon\) on the kinetics of relaxation, the orientation order parameter and the distribution function of the distances between nearest-neighbor discorectangles were analyzed. The transport properties of the resulting 1D systems were also analyzed by using the diffusion of a tracer particle (random walker) between the nearest-neighbor discorectangles. In the relaxed states the anomalous diffusion was observed having a hopping exponent \(d_w>2\) dependent upon \(\varepsilon\).
ISSN:2331-8422
DOI:10.48550/arxiv.2109.08453