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Proceedings Paper

Correlations in a system with complex dynamics
Author(s): Maria Massalska-Arodz; Jan Krawczyk
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Paper Abstract

The (alpha) -relaxation connected with reorientations of elongated molecules around the short axes was extracted using Cole-Davidson formula from the process observed in the isotropic and cholesteric phase of isopentycyanobiphenyl at the frequency range from 0.1 Hz to 100 kHz. Description gives the following parameters pointing to non-Debye and non-Arrhenius features of the process: the Jonscher parameters n1 approximately equals 0.5 and n2 equals 1, fragility m equals 50, exponent of the Kohlrausch-Williams-Watts relaxation function (beta) equals 0.7-0.87 and T0 equals 172 K from the Vogel-Fulcher-Tamman equation. The data obeys the scaling relation proposed in 1990 by group of Nagel.

Paper Details

Date Published: 14 December 1999
PDF: 6 pages
Proc. SPIE 4017, Polymers and Liquid Crystals, (14 December 1999); doi: 10.1117/12.373701
Show Author Affiliations
Maria Massalska-Arodz, Henryk Niewodniczanski Institute of Nuclear Physics (Poland)
Jan Krawczyk, Henryk Niewodniczanski Institute of Nuclear Physics (Poland)

Published in SPIE Proceedings Vol. 4017:
Polymers and Liquid Crystals
Andrzej Wlochowicz, Editor(s)

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