Computer simulation of Poisson's ratio of soft polydisperse discs at zero temperature

TL;DR

This paper introduces a simple algorithm to study the elastic properties of polydisperse soft disc systems at zero temperature, revealing how size polydispersity influences the Poisson's ratio.

Contribution

The paper presents a novel algorithm for analyzing structural and elastic properties of disordered systems at zero temperature, focusing on polydisperse soft discs.

Findings

Poisson's ratio increases with size polydispersity.

Larger Poisson's ratio observed as interactions approach hard potential.

Algorithm effectively captures effects of structural disorder on elasticity.

Abstract

A simple algorithm is proposed for studies of structural and elastic properties in the presence of structural disorder at zero temperature. The algorithm is used to determine the properties of the polydisperse soft disc system. It is shown that the Poisson's ratio of the system essentially depends on the size polydispersity parameter - larger polydispersity implies larger Poisson's ratio. In the presence of any size polidispersity the Poisson's ratio increases also when the interactions between the particles tend to the hard potential.