PUMA
Istituto di Matematica Applicata e Tecnologie Informatiche     
Sonnet A. M., Virga E. G., Durand G. E. Macroscopic signs of microscopic biaxiality in Nematic Liquid Crystals. Preprint ercim.cnr.ian//2002-1321, 2002.
 
 
Abstract
(English)
By use of two order tensors and a simplified mean-field model, we recover the classical sequence of phases, isotropic-uniaxial-biaxial, in a nematogenic material composed of intrinsically biaxial molecules. Each phase is practically described by a single scalar order parameter, instead of the two needed in more general models. This simplified model led us to a new expression of the free energy, which has the potential to describe better the diverse order reconstructions observed experimentally.
Subject Nematic liquid crystals
Microscopic biaxility
00A69



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