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On the Poisson's ratio of an amorphous 2D network material
Author(s) -
Stratmann Jan,
Ebrahem Firaz,
Bamer Franz,
Markert Bernd
Publication year - 2021
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.202000318
Subject(s) - poisson's ratio , poisson distribution , materials science , amorphous solid , monolayer , composite material , strain (injury) , ultimate tensile strength , constant (computer programming) , nonlinear system , auxetics , mathematics , mathematical analysis , crystallography , physics , nanotechnology , statistics , chemistry , computer science , quantum mechanics , medicine , programming language
Abstract Since Poisson's ratio has only been determined for crystalline forms of network materials, we investigate freestanding, amorphous monolayer 2D silica with varying ring size heterogeneity under tensile stress. Compared to the crystalline material, the relation between x ‐ and y ‐strain is slightly nonlinear. Thus, the Poisson's ratio is not constant, but a strongly oscillating function of the x ‐strain. With increasing level of heterogeneity, the Poisson's ratio of the material decreases.