smectic A
Configuration of a smectic A liquid crystal due to an isolated edge dislocation
... a smectic A liquid crystal subject to an edge dislocation under the assumption that the director and layer normal fields ( n and a , respectively) defining the smectic arrangement are not, in general, ...
13
Annihilation of edge dislocations in smectic A liquid crystals
... different smectic phases are classified according to the orientational order within (and between) ...the smectic A (SmA) ...various smectic LC phases the layer ordering plays the dominant role [4, ...
27
Experimental demonstration, using polarized Raman and infrared spectroscopy that both conventional and de Vries smectic A phase may exist in smectic liquid crystals with a first order A C* transition
... form smectic-A and/or smectic-C liquid crystals 共Sm-A and/or Sm-C兲, which are orientationally ordered fluids with a one-dimensional density ...in smectic layers, though not definitely defined as in ...
11
Boundary layers in pressure-driven flow 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 to a lateral pressure gradient which is perpendicular to the ...
35
Comparison of the characteristics of the chiral analog of the de Vries type of smectic A* phase
... the smectic layer plane, similar to dechiralization lines in the helical SmC * ...in smectic layers 共 sliding phase 关 15 兴 or disordered phase 关 18 兴兲 ...
6
Textural and conoscopic studies of chiral liquid crystals possessing cholestric - smectic A or cholesteric-TGB A - smectic A phase transitions
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11
Optical Birefringence Studies on Cholesteric and Induced Smectic Phases of Ternary Mixture of Liquid Crystalline Materials
... exhibit smectic phases with layered structure [2] or nematic (eventually cholesteric) ...orthogonal smectic A (SmA) phase [3] and more rarely nematic, columnar and cubic mesophases [4, ...
5
Ferroelectric ordering in chiral smectic- C* liquid crystals determined by nonchiral intermolecular interactions
... a chiral biaxial molecule represented as a rigid rod with two ’lateral groups’ and a permanent dipole perpendicu- lar to the molecular plane as shown in Fig. 4a. Note that the lateral groups make the molecule biaxial ...
13
Molecular theory of proper ferroelectricity in bent-core liquid crystals
... bent-core smectic phases with such periodicity has recently been developed [16, 17], but at present there is no consistent molecular theory of ferroelectric ordering in orthogonal bent-core smectics and even the ...
7
Octadecane 1,18 diol
... just like the chiral smectic C liquid crystals. On the other hand, in the ,!-alkanediols with an odd number of C atoms, one hydroxyl group had gauche conformation with respect to the hydrocarbon skeleton, whereas ...
8
A computer simulation study of tilted smetic mesophases
... The smectic A phase is stabilised with respect to the nematic phase such that for 4:1 molecules no nematic phase is observed at the temperature considered ...the smectic J phase while longer molecules ...
297
Orientational Behavior of Liquid-Crystalline Polymers with Amide Groups
... formed smectic A and smectic B phases during heating and cooling ...B, smectic B-A, and smectic A-isotropic phase transition temperatures increased with increasing molecular ...a ...
5
Molecular simulation of chevrons in confined smectic liquid crystals
... by smectic A LCs is always metastable with respect to the tilted layer arrangement, but persists because the lat- ter can only form following layer slippage at the LC-substrate interface ...a smectic C LC ...
42
Orientational distribution functions and order parameters in "de Vries"-type smectics : a simulation study
... One notes that the diffraction pattern obtained from simulations of smectic A phases with different types of prescribed orientational distribution function are quali- tatively different.. I[r] ...
10
On the orientational distribution functions in de Vries-type smectic liquid crystals
... Vries smectic liquid crystals the transition from the orthogonal smectic A (SmA) to the tilted smectic C (SmC) phase occurs with essentially no decrease in smectic layer ...
15
Large electroclinic effect and stability of chiral smectic liquid crystals
... An electric field applied parallel to the layer of a smectic-A* Sm-A* liquid crystal induces a molecular tilt relative to the layer normal, called the electroclinic effect.. The electroc[r] ...
177
Minimality conditions for wave speed in anisotropic smectic C* liquid crystals
... the smectic A (or SmA) phase, the molecules tend to align perpendicular to the layers, while in the smectic C (SmC) phase, the director n is aligned at some angle away from the smectic layer ...the ...
16
Behaviour of a shear-wave at a solid-smectic interface
... aligned smectic A (SmA) induced by a shear wave incident at the plane interface between the smectic and an isotropic elastic solid such that the wave first propagates through the solid then undergoes a ...
10
Controlling Defects in Nematic and Smectic Liquid Crystals Through Boundary Geometry
... and smectic- A LCs in three dimensions as well as two-dimensional smectic LCs on curved ...Two-dimensional smectic LCs on curved substrates are examined in the special cases where the substrate ...
184
Effect of electric field on the polarised infrared spectra of smectic liquid crystals
... T able 6.2 show s that, in each smectic phase, the m axim um value o f tilt angle obtained is for the phenyl ring ( C - C ) stretching vibrations (1602 cm'*). These values are confirm ed with the electro-optic m ...
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