scholarly journals Landau theory-based estimates for viscosity coefficients of uniaxial and biaxial nematic liquid crystals

2012 ◽  
Vol 40 (1) ◽  
pp. 130-136 ◽  
Author(s):  
Shaikh M. Shamid ◽  
David W. Allender
Keyword(s):  
Liquid Crystals ◽  
Landau Theory ◽  
Nematic Liquid Crystals ◽  
Viscosity Coefficients ◽  
Biaxial Nematic

Landau theory for biaxial nematic liquid crystals with two order parameter tensors

2008 ◽  
Vol 20 (6) ◽  
pp. 347-374 ◽  
Author(s):  
Giovanni De Matteis ◽  
André M. Sonnet ◽  
Epifanio G. Virga
Keyword(s):  
Liquid Crystals ◽  
Order Parameter ◽  
Landau Theory ◽  
Nematic Liquid Crystals ◽  
Biaxial Nematic

scholarly journals The Viscosity Coefficients of Biaxial-Nematic Liquid Crystals. Phenomenology and Affine Transformation Model

1990 ◽  
Vol 45 (1) ◽  
pp. 7-13 ◽  
Author(s):  
Dieter Baalss
Keyword(s):  
Liquid Crystals ◽  
Affine Transformation ◽  
Nematic Liquid Crystals ◽  
Transformation Model ◽  
Nonspherical Particles ◽  
Viscosity Coefficients ◽  
Infinitesimal Disturbance ◽  
Complete Set ◽  
Flow Alignment ◽  
Biaxial Nematic

AbstractThe viscosity tensor of biaxial-nematic liquid crystals contains 16 independent elements. A complete set of these viscosity coefficients is introduced and related to experimentally accessible quantities. Furthermore, the flow alignment and its stability against an arbitrary infinitesimal disturbance are discussed. By the affine transformation model, formerly established for the uniaxial symmetric case, one can express the viscous anisotropy of perfectly ordered biaxial ellipsoids in terms of the two viscosities of an isotropic reference system and the axes ratios of the nonspherical particles.

Landau Theory of Biaxial Nematic Liquid Crystals

1984 ◽  
Vol 110 (1-4) ◽  
pp. 331-339 ◽  
Author(s):  
David W. Allender ◽  
Michael A. Lee
Keyword(s):  
Liquid Crystals ◽  
Landau Theory ◽  
Nematic Liquid Crystals ◽  
Biaxial Nematic
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