Elasticity of smectic liquid crystals with in-plane orientational order and dispiration asymmetry
نویسندگان
چکیده
منابع مشابه
Bond orientational order model for smectic B liquid crystals
2014 We show how recent theories of two dimensional melting can be carried over to provide natural order parameters for solid, smectic B, and smectic A phases of liquid crystals. Smectic B and other well-ordered smectic phases correspond to systems with bond orientational long range order and positional short range order in the plane of the smectic layers. The X-ray scattering predicted by this...
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Liquid crystals are systems which flow like liquids while retaining the mechanical and optical anisotropy of crystals. On a microscopic level they are characterized by molecular orientational order accompanied by a partial or complete translational disorder of the molecular positions (1~3) • Thermotropic liquid crystals are formed upon heating many anisotropic organic compounds, while lyotropic...
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Brookhaven National Laboratory • National Synchrotron Light Source • P.O. Box 5000, Upton, NY 11973 • http://www.nsls.bnl.gov/ FUNDING Engineering and Physical Sciences Research Council; National Science Foundation; Petroleum Research Fund, administered by the American Chemistry Society; Portuguese Foundation for Science and Technology; The University of Manchester; University of Minnesota; U.S...
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Abstract. Smectic liquid crystals are materials formed by stacking deformable, fluid layers. Though smectics prefer to have flat, uniformly-spaced layers, boundary conditions can impose curvature on the layers. Since the layer spacing and curvature are intertwined, the problem of finding minimal configurations for the layers becomes highly nontrivial. We discuss various topological and geometri...
متن کاملMolecular theory of elastic constants of liquid crystals. III. Application to smectic phases with tilted orientational order.
Using the density-functional formalism we derive an expression for the distortion free energy of systems with continuous broken symmetry and use it to derive an expression for the elastic constants of smectic phases in which the director is tilted with respect to the smectic layer normal. As in the previous papers of this series [Y. Singh, S. Singh, and K. Rajesh, Phys. Rev. A 45, 974 (1992); Y...
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ژورنال
عنوان ژورنال: Physical Review E
سال: 2017
ISSN: 2470-0045,2470-0053
DOI: 10.1103/physreve.95.022701