Messanae Universitas Studiorum

Dinamica rilassamentale di liquidi fragili

Cutroni, M. and Mandanici, A. and Piccolo, A. (1994) Dinamica rilassamentale di liquidi fragili. Accademia Peloritana dei Pericolanti Classe FF.MM.NN., LXXII (Supplement 1). pp. 439-446.

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    Abstract

    By means of ultrasonic and dielectric relaxation spectroscopy an experimental investigation on the $\alpha$-relaxation process in fragile molecular liquids has been performed. The structural relaxation of glass-formers around the glass transition point is a complex process whose microscopic description constitutes an unsolved problem in condensed matter physics. On the other hand, being this relaxation intimately relatcd to the liquid-glass transition, its explanation represents an essential prerequisite for the interpretation of this last phenomenon. For the analitical representation of the dynamic susceptibilities involved the Cole-Davidson function has been employed while the Vogel-Fulcher-Tamman (VFT) law has been taken into account to describe the temperature dependence of the mean relaxation time. A substantial accord with the dynamical behaviour of very fragile liquids has been found.

    Item Type: Article
    Subjects: M.U.S. - Miscellanea > Atti Accademia Peloritana > Classe di Scienze Fisiche, Matematiche e Naturali > 1994 > Supplemento 1 parte 2
    M.U.S. - Miscellanea > Atti Accademia Peloritana > Classe di Scienze Medico-Biologiche > 1994 > Supplemento 1 parte 2
    M.U.S. - Miscellanea > Atti Accademia Peloritana > Classe di Scienze Giuridiche, Economiche e Politiche > 1994 > Supplemento 1 parte 2
    M.U.S. - Miscellanea > Atti Accademia Peloritana > Classe di Lettere, Filosofia e belle Arti > 1994 > Supplemento 1 parte 2
    Divisions: UNSPECIFIED
    Depositing User: Mr Nunzio Femminò
    Date Deposited: 17 Apr 2014 11:01
    Last Modified: 17 Apr 2014 11:01
    URI: http://cab.unime.it/mus/id/eprint/5164

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