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Nature of Poisson's ratio of amorphous polymers and glasses and its relation to structure-sensitive properties


Buryat State University, Smolina st. 24a, Ulan-Ude, 670000, Russian Federation

A review and analysis of studies concerning the nature of Poisson's ratio μ of glassy systems are presented. The value of μ is a more pronounced structure-sensitive property than are elasticity moduli. The unique relation of μ with the Gruneisen parameter is substantiated. In this connection, the interrelation of harmonic (linear) and anharmonic (nonlinear) characteristics is separately considered. Poisson's ratio proves to be a single-valued function of parameters characterizing dynamic properties and critical processes and is sensitive to the lattice dynamics and the atomic-molecular structure of glasses. The structural features of isotropic solids with the negative Poisson's ratio (coefficient of transverse deformation) are discussed.

Fulltext is available at IOP
Keywords: coefficient of transverse deformation, interatomic interaction potential, anharmonicity, elastic constants, amorphous organic polymers, inorganic glasses
PACS: 62.20.−x, 63.20.Ry, 81.05.Kf (all)
DOI: 10.3367/UFNe.2019.05.038574
URL: https://ufn.ru/en/articles/2020/4/b/
Citation: Sanditov D S "Nature of Poisson's ratio of amorphous polymers and glasses and its relation to structure-sensitive properties" Phys. Usp. 63 327–341 (2020)
BibTexBibNote ® (generic)BibNote ® (RIS) MedlineRefWorks
PT Journal Article
TI Nature of Poisson's ratio of amorphous polymers and glasses and its relation to structure-sensitive properties
AU Sanditov D S
FAU Sanditov DS
DP 10 Apr, 2020
TA Phys. Usp.
VI 63
IP 4
PG 327-341
RX 10.3367/UFNe.2019.05.038574
URL https://ufn.ru/en/articles/2020/4/b/
SO Phys. Usp. 2020 Apr 10;63(4):327-341

Received: 26th, March 2019, revised: 31st, May 2019, 22nd, May 2019

Оригинал: Сандитов Д Д С «Природа коэффициента Пуассона аморфных полимеров и стёкол и его связь со структурно-чувствительными свойствами» УФН 190 355–370 (2020); DOI: 10.3367/UFNr.2019.05.038574

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