A review of experiments testing the shoving model

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Resumé

According to the shoving model the non-Arrhenius temperature dependence of supercooled liquids' relaxation time (or viscosity) derives from the fact that the high-frequency shear modulus is temperature dependent in the supercooled phase, often increasing a factor of three or four in the temperature interval over which the relaxation time increases by ten to fifteen decades. In this paper we have compiled all tests of the shoving model known to us. These involve rheological data obtained by different techniques, high-frequency sound-wave data, neutron scattering data for the vibrational mean-square displacement, data obtained at or below the glass transition, as well as data testing the model under out-of-equilibrium conditions, i.e., during aging. Most data confirm the model, some do not. We conclude that more work is needed to precisely characterize the model's range of applicability
OriginalsprogEngelsk
TidsskriftJournal of Non-Crystalline Solids
Vol/bind407
Sider (fra-til)14-22
Antal sider9
ISSN0022-3093
DOI
StatusUdgivet - 2015

Citer dette

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author = "Tina Hecksher and Dyre, {J. C.}",
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A review of experiments testing the shoving model. / Hecksher, Tina; Dyre, J. C.

I: Journal of Non-Crystalline Solids, Bind 407, 2015, s. 14-22.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - A review of experiments testing the shoving model

AU - Hecksher, Tina

AU - Dyre, J. C.

PY - 2015

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N2 - According to the shoving model the non-Arrhenius temperature dependence of supercooled liquids' relaxation time (or viscosity) derives from the fact that the high-frequency shear modulus is temperature dependent in the supercooled phase, often increasing a factor of three or four in the temperature interval over which the relaxation time increases by ten to fifteen decades. In this paper we have compiled all tests of the shoving model known to us. These involve rheological data obtained by different techniques, high-frequency sound-wave data, neutron scattering data for the vibrational mean-square displacement, data obtained at or below the glass transition, as well as data testing the model under out-of-equilibrium conditions, i.e., during aging. Most data confirm the model, some do not. We conclude that more work is needed to precisely characterize the model's range of applicability

AB - According to the shoving model the non-Arrhenius temperature dependence of supercooled liquids' relaxation time (or viscosity) derives from the fact that the high-frequency shear modulus is temperature dependent in the supercooled phase, often increasing a factor of three or four in the temperature interval over which the relaxation time increases by ten to fifteen decades. In this paper we have compiled all tests of the shoving model known to us. These involve rheological data obtained by different techniques, high-frequency sound-wave data, neutron scattering data for the vibrational mean-square displacement, data obtained at or below the glass transition, as well as data testing the model under out-of-equilibrium conditions, i.e., during aging. Most data confirm the model, some do not. We conclude that more work is needed to precisely characterize the model's range of applicability

U2 - 10.1016/j.jnoncrysol.2014.08.056

DO - 10.1016/j.jnoncrysol.2014.08.056

M3 - Journal article

VL - 407

SP - 14

EP - 22

JO - Journal of Non-Crystalline Solids

JF - Journal of Non-Crystalline Solids

SN - 0022-3093

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