Hydrodynamics of the Renn-Lubensky twist grain boundary phase, and the decoupled lamellar phase

Hatwalne, Yashodhan and Ramaswamy, Sriram and Toner, John (1993) Hydrodynamics of the Renn-Lubensky twist grain boundary phase, and the decoupled lamellar phase. In: Physical Review Letters, 70 (14). pp. 2090-2093.

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Abstract

The long-wavelength hydrodynamics of the Renn-Lubensky twist grain boundary phase with grain boundary angle 2pialpha, alpha irrational, is studied. We find three propagating sound modes, with two of the three sound speeds vanishing for propagation orthogonal to the grains, and one vanishing for propagation parallel to the grains as well. In addition, we find that the viscosities eta1, eta2, eta4, and eta5 diverge like 1/Absolute value of omega as frequency omega --> 0, with the divergent parts DELTAeta(i) satisfying DELTAeta1DELTAeta4=(DELTAeta5)2, exactly. Our results should also apply to the predicted decoupled lamellar phase.

Item Type:	Journal Article
Publication:	Physical Review Letters
Publisher:	The American Physical Society
Additional Information:	Copyright of this article belongs to The American Physical Society.
Department/Centre:	Division of Physical & Mathematical Sciences > Centre for Theoretical Studies (Ceased to exist at the end of 2003) Division of Physical & Mathematical Sciences > Physics
Date Deposited:	10 Feb 2011 05:35
Last Modified:	10 Feb 2011 05:35
URI:	http://eprints.iisc.ac.in/id/eprint/35491

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