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Issue 43, 2017
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Auxeticity enhancement due to size polydispersity in fcc crystals of hard-core repulsive Yukawa particles

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Abstract

The Poisson's ratio of the fcc hard-core repulsive Yukawa crystals with size polydispersity was determined by Monte Carlo simulations in the isothermal–isobaric ensemble. The effect of size polydispersity on the auxetic properties of Yukawa crystals has been studied. It has been found that an increase of particle size polydispersity causes a decrease of the Poisson's ratio in auxetic directions as well as appearance of a negative Poisson's ratio in formerly non-auxetic directions. A measure of auxeticity was introduced to estimate quantitatively an enhancement of auxetic properties in polydisperse Yukawa crystals. The proposed measure of auxeticity can be applied to appraise the auxeticity of any studied system.

Graphical abstract: Auxeticity enhancement due to size polydispersity in fcc crystals of hard-core repulsive Yukawa particles

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Publication details

The article was received on 22 Jun 2017, accepted on 25 Sep 2017 and first published on 16 Oct 2017


Article type: Paper
DOI: 10.1039/C7SM01231D
Citation: Soft Matter, 2017,13, 7916-7921
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    Auxeticity enhancement due to size polydispersity in fcc crystals of hard-core repulsive Yukawa particles

    P. M. Pigłowski, J. W. Narojczyk, K. W. Wojciechowski and K. V. Tretiakov, Soft Matter, 2017, 13, 7916
    DOI: 10.1039/C7SM01231D

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