Nonlocal dielectric relaxation in glycerol

Pronin, A. A. and Trachenko, K. and Kondrin, M. V. and Lyapin, A. G. and Brazhkin, V. V. (2011) Nonlocal dielectric relaxation in glycerol. Physical Review B, 84 (1). 012201. DOI 10.1103/PhysRevB.84.012201

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Abstract

Since its introduction, liquid viscosity and relaxation time τ have been considered intrinsic properties of a system that is essentially local in nature and therefore independent of system size. Dielectric relaxation experiments are performed in glycerol, and it is discovered that this is the case at high temperature only. At low temperature, τ increases with system size and becomes nonlocal. We discuss the origin of this effect in the theory based on liquid elasticity length, the length over which local relaxation events in a liquid interact via induced elastic waves. We find good agreement between experiment and theory.

Item Type: Article
Uncontrolled Keywords: 2011AREP; IA63;
Subjects: 03 - Mineral Sciences
Divisions: 03 - Mineral Sciences
Journal or Publication Title: Physical Review B
Volume: 84
Page Range: 012201
Identification Number: 10.1103/PhysRevB.84.012201
Depositing User: Sarah Humbert
Date Deposited: 07 Oct 2011 16:49
Last Modified: 23 Jul 2013 10:02
URI: http://eprints.esc.cam.ac.uk/id/eprint/2196

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