Landscape equivalent of the shoving model

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

    Resumé

    It is shown that the shoving model expression for the average relaxation time of viscous liquids, according to which the activation energy is proportional to the instantaneous shear modulus, follows largely from a classical "landscape" estimation of barrier heights from curvature at energy minima. Although the activation energy in this reasoning involves both instantaneous bulk and shear moduli, the bulk modulus contributes less than 8% to the temperature dependence of the activation energy. This reflects the fact that the physics of the two models are closely related.
    OriginalsprogEngelsk
    TidsskriftPhysical Review E (Statistical, Nonlinear, and Soft Matter Physics)
    Vol/bind69
    Udgave nummer4
    ISSN1539-3755
    StatusUdgivet - 2004

    Bibliografisk note

    Paper id:: 042501

    Citer dette

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    title = "Landscape equivalent of the shoving model",
    abstract = "It is shown that the shoving model expression for the average relaxation time of viscous liquids, according to which the activation energy is proportional to the instantaneous shear modulus, follows largely from a classical {"}landscape{"} estimation of barrier heights from curvature at energy minima. Although the activation energy in this reasoning involves both instantaneous bulk and shear moduli, the bulk modulus contributes less than 8{\%} to the temperature dependence of the activation energy. This reflects the fact that the physics of the two models are closely related.",
    author = "Jeppe Dyre and Olsen, {Niels Boye}",
    note = "Paper id:: 042501",
    year = "2004",
    language = "English",
    volume = "69",
    journal = "Physical Review E",
    issn = "2470-0045",
    publisher = "American Physical Society",
    number = "4",

    }

    Landscape equivalent of the shoving model. / Dyre, Jeppe; Olsen, Niels Boye.

    I: Physical Review E (Statistical, Nonlinear, and Soft Matter Physics), Bind 69, Nr. 4, 2004.

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

    TY - JOUR

    T1 - Landscape equivalent of the shoving model

    AU - Dyre, Jeppe

    AU - Olsen, Niels Boye

    N1 - Paper id:: 042501

    PY - 2004

    Y1 - 2004

    N2 - It is shown that the shoving model expression for the average relaxation time of viscous liquids, according to which the activation energy is proportional to the instantaneous shear modulus, follows largely from a classical "landscape" estimation of barrier heights from curvature at energy minima. Although the activation energy in this reasoning involves both instantaneous bulk and shear moduli, the bulk modulus contributes less than 8% to the temperature dependence of the activation energy. This reflects the fact that the physics of the two models are closely related.

    AB - It is shown that the shoving model expression for the average relaxation time of viscous liquids, according to which the activation energy is proportional to the instantaneous shear modulus, follows largely from a classical "landscape" estimation of barrier heights from curvature at energy minima. Although the activation energy in this reasoning involves both instantaneous bulk and shear moduli, the bulk modulus contributes less than 8% to the temperature dependence of the activation energy. This reflects the fact that the physics of the two models are closely related.

    M3 - Journal article

    VL - 69

    JO - Physical Review E

    JF - Physical Review E

    SN - 2470-0045

    IS - 4

    ER -