The rheology of solid glass
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Williams, Stephen R.; Evans, Denis J.
Description
As the glass transition is approached from the high temperature side, viewed as a liquid, the properties of the ever more viscous supercooled liquid are continuous functions of temperature and pressure. The point at which we decide to classify the fluid as a solid is therefore subjective. This subjective decision does, however, have discontinuous consequences for how we determine the rheological properties of the glass. We apply the recently discovered relaxation theorem to the time...[Show more]
dc.contributor.author | Williams, Stephen R. | |
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dc.contributor.author | Evans, Denis J. | |
dc.date.accessioned | 2015-11-27T03:35:46Z | |
dc.date.available | 2015-11-27T03:35:46Z | |
dc.identifier.issn | 0021-9606 | |
dc.identifier.uri | http://hdl.handle.net/1885/16868 | |
dc.description.abstract | As the glass transition is approached from the high temperature side, viewed as a liquid, the properties of the ever more viscous supercooled liquid are continuous functions of temperature and pressure. The point at which we decide to classify the fluid as a solid is therefore subjective. This subjective decision does, however, have discontinuous consequences for how we determine the rheological properties of the glass. We apply the recently discovered relaxation theorem to the time independent, nondissipative, nonergodic glassy state to derive an expression for the phase space distribution of an ensemble of glass samples. This distribution is then used to construct a time dependent linear response theory for aged glassysolids. The theory is verified using molecular dynamics simulations of oscillatory shear for a realistic model glass former with excellent agreement being obtained between the response theory calculations and direct nonequilibrium molecular dynamics calculations. Our numerical results confirm that unlike all the fluid states, including supercooled liquids, a solidglass (in common with crystalline states) has a nonzero value for the zero frequency shear modulus. Of all the states of matter, a supercooled fluid approaching the glass transition has the highest value for the limiting zero frequency shear viscosity. Finally, solidglasses like dilute gases and crystals have a positive temperature coefficient for the shear viscosity whereas supercooled and normal liquids have a negative temperature coefficient. | |
dc.description.sponsorship | We thank the National Computational Infrastructure NCI for computational facilities and the Australian Research Council ARC for funding. | |
dc.publisher | American Institute of Physics (AIP) | |
dc.rights | http://www.sherpa.ac.uk/romeo/issn/0021-9606..."Publishers version/PDF may be used on author's personal website, institutional website or institutional repository" from SHERPA/RoMEO site (as at 27/11/15). Copyright 2010 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in The Journal of Chemical Physics and may be found at https://doi.org/10.1063/1.3418442 | |
dc.source | The Journal of Chemical Physics | |
dc.subject | Keywords: Continuous functions; Crystalline state; Dilute gas; Fluid state; Glass samples; Glassy solids; Glassy state; High temperature; Limiting zeros; Linear-response theory; Molecular dynamics simulations; Nonequilibrium molecular dynamics; Nonzero values; Nume | |
dc.title | The rheology of solid glass | |
dc.type | Journal article | |
local.description.notes | Imported from ARIES | |
local.identifier.citationvolume | 132 | |
dc.date.issued | 2010-05-12 | |
local.identifier.absfor | 010506 | |
local.identifier.absfor | 020304 | |
local.identifier.absfor | 030607 | |
local.identifier.ariespublication | u4217927xPUB505 | |
local.publisher.url | https://www.aip.org/ | |
local.type.status | Published Version | |
local.contributor.affiliation | Williams, Stephen, College of Physical and Mathematical Sciences, CPMS Research School of Chemistry, RSC General, The Australian National University | |
local.contributor.affiliation | Evans, Denis, College of Physical and Mathematical Sciences, CPMS Research School of Chemistry, RSC General, The Australian National University | |
local.bibliographicCitation.issue | 18 | |
local.bibliographicCitation.startpage | 184105 | |
local.bibliographicCitation.lastpage | 184105/14 | |
local.identifier.doi | 10.1063/1.3418442 | |
local.identifier.absseo | 970103 | |
local.identifier.absseo | 970102 | |
local.identifier.absseo | 970101 | |
dc.date.updated | 2016-02-24T10:43:52Z | |
local.identifier.scopusID | 2-s2.0-77952702137 | |
local.identifier.thomsonID | 000277756500006 | |
Collections | ANU Research Publications |
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