Continuum Theory for Smectic Liquid Crystals
Continuum theory for liquid crystals
... 1 Continuum Theory for Liquid Crystals ...The continuum theories for liquid crystals that are in use today largely stem from the original work of Oseen [88, 89] and Zocher ...
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Continuum theory of biaxial nematic liquid crystals
... 2 Continuum model and energies It proves convenient to introduce the schematic diagram of a biaxial plate to describe the necessary directors for a biaxial nematic and to this end we follow the description used by ...
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Smectic layer instabilities in liquid crystals
... of smectic layers is always stabilized by some counter-torque, which stems from an interactions with the bounding glass ...the smectic layers are actually rotating only if the driving torque exceeds some ...
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Molecular Organisation in “de Vries” Smectic Liquid Crystals: Characterisation and Theory
... An unexpected discovery of low layer shrinkage almost 30 years ago in some materials sparked an interest in the research community. Since then, several models were postulated in order to explain the anomalous phenomena. ...
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Annihilation of edge dislocations in smectic A liquid crystals
... appendices. II. MODEL Our approach is phenomenological, in that we seek equations of motion for the order parameter. Specifically, we shall use the de Gennes complex order parameter to describe the smectic wave. ...
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On the biaxiality of smectic C and ferroelectric liquid crystals
... Typical results for the commercial liquid crystal mixture SCE8(R) are shown in figure 10a. Of course, the director profile will only approach the fully AC stabilised condition of equation (18) if the field is very ...
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Molecular simulation of chevrons in confined smectic liquid crystals
... single smectic domain grew quickly from the higher order central region, leading to the bookshelf structure - the precise role of the substrate roughness in this process is not ...the smectic domains formed ...
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Cylindrical, spherical and toroidal layering of smectic C liquid crystals
... G. McKAY Department of Mathematics, University of Strathclyde, 26 Richmond Street, Glasgow. G1 1XH. Scotland, U.K. This article examines static solutions to the smectic C continuum equa- tions of Leslie et ...
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Boundary layers in pressure-driven flow in smectic A liquid crystals
... IN SMECTIC A LIQUID CRYSTALS ∗ ...a smectic A liquid crystal sample that is initially aligned in a classical “bookshelf” geometry confined between parallel plates and is then subjected ...
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Dielectric Degrees of Freedom in Chiral Smectic C Liquid Crystals
... polymeric liquid crystalline materials 7−11 show- ing an A to C ∗ phase ...to smectic C ∗ transition 8 , which is first order and where one could ex- pect a drastic change of this mode if it were connected ...
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Elasticity of smectic liquid crystals with in-plane orientational order and dispiration asymmetry
... elasticity theory of isolated fluid membranes with orienta- tional order emphasizes the interplay between geometry, topology, and thermal ...lamellar liquid crystals such as smectic-C, hexatic ...
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Effect of electric field on the polarised infrared spectra of smectic liquid crystals
... (cholesteric) liquid crystals reflect light o f w avelength equal to the ...ence, liquid crystals m ake it possible to accurately gauge tem perature ju s t by looking at the colour o f the ...
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Minimality conditions for wave speed in anisotropic smectic C* liquid crystals
... of smectic C ∗ liquid crystal subject to a constant electric field, dealing with both isotropic and anisotropic ...a smectic layer, and our focus here is on examining how the presence of anisotropy ...
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On the orientational distribution functions in de Vries-type smectic liquid crystals
... The nature of de Vries-type smectics certainly remains a challenging topic of liquid crystal research regardless of whether or not there is a technological need for these materials. Acknowledgements We thank Noel ...
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Controlling Defects in Nematic and Smectic Liquid Crystals Through Boundary Geometry
... For device applications, it is desirable to produce FCDs with prescribed arrangements in 2D and 3D over large regions and to scale down the LC patterning. Here, we present a unique level of control to direct the growth ...
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Controlling Defects in Nematic and Smectic Liquid Crystals Through Boundary Geometry
... For device applications, it is desirable to produce FCDs with prescribed arrangements in 2D and 3D over large regions and to scale down the LC patterning. Here, we present a unique level of control to direct the growth ...
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Simulation and theory of liquid crystals
... for liquid crystalline mesogens are usually chosen to ex- hibit certain symmetries, ...many liquid crystalline phases are experimentally observed with this as the case, even for “real” mesogens that are ...
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Short-range smectic fluctuations and the flexoelectric model of modulated nematic liquid crystals
... 4 Faculty of Education, University of Ljubljana, Kardeljeva ploˇsˇcad 16, 1000 Ljubljana, Slovenia 5 Toyota Physical and Chemical Research Institute, 41-1 Yokomichi, Nagakute, Aichi 480-1192, Japan 6 Department of ...
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Experimental study of high temperature smectic C FI2 phase in chiral smectic liquid crystals that exhibit phase sequence reversal
... When the sample is heated from the crystalline phase it goes directly in to SmC ␣ ⴱ phase at a temperature 80 ° C indicating the absence of both SmC ⴱ and SmC FI2 ⴱ phases 关 images 共 i 兲 – 共l兲兴 in the heating mode. Even ...
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Ferroelectric ordering in chiral smectic- C* liquid crystals determined by nonchiral intermolecular interactions
... the theory will be used to obtain explicit expressions for the sponta- neous polarization in the smectic C ∗ phase composed of biaxial molecules with quadrupole-quadrupole inter- action ...the ...
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