smectic C* liquid crystals
Ferroelectric ordering in chiral smectic- C* liquid crystals determined by nonchiral intermolecular interactions
... General microscopic mechanism of ferroelectric ordering in chiral smectic C* liquid crystals is considered. It is shown that if the mesogenic molecules have a sufficiently low symmetry, the ...
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Minimality conditions for wave speed in anisotropic smectic C* liquid crystals
... a smectic layer, and our focus here is on examining how the presence of anisotropy can affect the speed of this ...Copyright c 0000 John Wiley & Sons, ...
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Cylindrical, spherical and toroidal layering of smectic C liquid crystals
... the smectic layers, although deformed, remain of constant thickness, and also the angle of tilt of the alignment with respect to the layer normal remains ...
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Elasticity of smectic liquid crystals with in-plane orientational order and dispiration asymmetry
... lamellar liquid crystals such as smectic-C, hexatic smectics, and smectic-C* are endowed with in-plane orientational ...in Smectic-C* liquid crystals) ...
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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 ...
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Octadecane 1,18 diol
... chiral smectic C liquid ...of C atoms, one hydroxyl group had gauche conformation with respect to the hydrocarbon skeleton, whereas another hydroxyl group had trans ...the smectic A ...
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Molecular Organisation in “de Vries” Smectic Liquid Crystals: Characterisation and Theory
... The polarized IR measurements were performed using Bio-Rad FTS-6000 spectrometer with spectral range of 450 to 4000 cm -1 in wave number. The spectrometer is equipped with a liquid nitrogen cooled mercury cadmium ...
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Effect of electric field on the polarised infrared spectra of smectic liquid crystals
... occur. C hem ical structural fragm ents w ithin m olecules, know n as fu n c tio n a l groups, tend to absorb infrared radiation in the sam e w avenum ber range regardless o f the structure o f the rest o f ...
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Controlling Defects in Nematic and Smectic Liquid Crystals Through Boundary Geometry
... nematic liquid crystal 5CB is deposited on this substrate, with its top surface exposed to ...◦ C), the defect line is absorbed into the isotropic phase, resulting in a completely black image under crossed ...
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On the orientational distribution functions in de Vries-type smectic liquid crystals
... [21] Br¨ auniger T, Fung BM. Relation between the orientational ordering and the tricritical behavior for smectic-A to smectic-C phase transition. Journal of Chemical Physics. 1995 ...
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On the biaxiality of smectic C and ferroelectric liquid crystals
... The story begins when I first met Peter Raynes from the Royal Signals and Radar Establishment (RSRE) in Malvern, UK in June 1985. I had done my physics undergraduate project on relating nematic order parameters to ...
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Textural and conoscopic studies of chiral liquid crystals possessing cholestric - smectic A or cholesteric-TGB A - smectic A phase transitions
... D[LV c D[LV SDUDOOHO WR WKH VPHFWLFOD\HUV7KHERXQGDU\EHWZHHQ DGMDFHQW VODEVLVDWZLVWJUDLQERXQGDU\ 7*% PDGHRI SDUDOOHO HTXLGLVWDQW VFUHZ GLVORFDWLRQV RI WKH 6P$SKDVHZKLFKZHFDQWHUPYRUWH[OLQHVIRU WKH UHDVRQ RI WKH ...
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Biaxial order parameter in the homologous series of orthogonal bent-core smectic liquid crystals
... uniaxial liquid crystalline state that governs nearly all of its physical properties is the primary orientational order parameter (S) for the long axes of molecules with respect to the ...biaxial liquid ...
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The effect of confinement on the stability of field induced states and on supercooling in antiferro ferroelectric phase transitions in chiral smectic liquid crystals
... tilted smectic liquid crystalline materials un- der discussion ...thermotropic liquid crystals, a phase transition between the two phases is induced by the thermal energy, that is, by changing ...
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Self assembled uniaxial and biaxial multilayer structures in chiral smectic liquid crystals frustrated between ferro and antiferroelectricity
... The observed deviation from simulated curve shows that the distribution of transition dipole moments is not uniform. The direction of that deviation 共into higher values, except in the range 87–127 °C for MHPOBC, ...
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Biaxial order parameter in the homologous series of orthogonal bent core smectic liquid crystals
... biaxial smectic phase both S and C, particularly the temperature dependency of the latter, are being experimentally ...orthogonal smectic phase composed of bent cores is higher than in Sm-A calamatic ...
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Experimental study of high temperature smectic C FI2 phase in chiral smectic liquid crystals that exhibit phase sequence reversal
... the smectic lay- ers may be caused by the solitonlike wave ...° C has a small tilt angle but a large ...the c director as shown in a schematic ...
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Smectic layer instabilities in liquid crystals
... the smectic layers straighten for increasing electric field amplitude, these bookshelf-zones increase at the expense of the vertical chevron until the two domains of oppositely inclined bookshelf domains ...The ...
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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 ...
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Annihilation of edge dislocations in smectic A liquid crystals
... With time the defects gradually enter the late pre-collision regime, shown in Figs.3a. Now the defect core structure of a defect seems to be influenced by the interaction with its neighbor. The order parameter profiles ...
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