smectic-a liquid crystals
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
... in smectic-A liquid crystals: the conventional unimodal distribution and the “cone-shaped” de Vries ...the smectic-A liquid crystal is of the de Vries type, we calculate the ⌰ required ...
11
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 ...
6
Self assembled uniaxial and biaxial multilayer structures in chiral smectic liquid crystals frustrated between ferro and antiferroelectricity
... ferroelectric liquid crystals at a microscopic ...cases, liquid crystals have been studied using this technique in planar homogeneous alignments ...of liquid crystalline cells aligned ...
9
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 May;102(19):7714–7720. ...
15
Elasticity of smectic liquid crystals with in-plane orientational order and dispiration asymmetry
... of smectic liquid ...that smectic- as well as orientational order is well established; the treatment of phase transitions such as nematic-SmA-SmC [13], and the effect of thermal fluctuations [9, 10] ...
10
On the biaxiality of smectic C and ferroelectric liquid crystals
... the smectic C and ferroelectric smectic C* phases ...ferroelectric liquid crystals in the UK blossomed through the support of the Smectic C Physics and Materials ...the smectic C ...
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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 ...
6
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 ...
13
Cylindrical, spherical and toroidal layering of smectic C liquid crystals
... Liquid crystals are elongated molecules for which the long molecular axes locally adopt one common direction in space, usually described by a unit vector n , known as the ...director. Smectic C ...
15
Experimental study of high temperature smectic C FI2 phase in chiral smectic liquid crystals that exhibit phase sequence reversal
... these subphases can be understood to be result of a compe- tition between the antiferroelectric 共AF兲 and ferroelectric 共F兲 interactions in the adjacent smectic layers. According to Osi- pov and Fukuda model, ...
9
Minimality conditions for wave speed in anisotropic smectic C* liquid crystals
... of liquid crystals in which the long axes of the constituent molecules align in layers with a well-defined interlayer ...Mathematically, liquid crystals are normally described in terms of a ...
16
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 ...
5
Controlling Defects in Nematic and Smectic Liquid Crystals Through Boundary Geometry
... Liquid crystals (LCs), presently the basis of the dominant electronics display technology, also hold immense potential for the design of new self-assembling, self-healing, and "smart" responsive ...
184
Controlling Defects in Nematic and Smectic Liquid Crystals Through Boundary Geometry
... Liquid crystals (LCs), presently the basis of the dominant electronics display technology, also hold immense potential for the design of new self-assembling, self-healing, and "smart" responsive ...
184
Boundary layers in pressure-driven flow in smectic A liquid crystals
... the smectic layer reorientation for samples of the liquid crystal SCE12 with a surface pretilt of θ 0 = π/6 (as used in the calculations for Figure 6 and Figures 9 to 12 above) occurred over a boundary ...
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Annihilation of edge dislocations in smectic A liquid crystals
... of smectic edge dislocations in comparison to the annihilation of nematic ...disrupt smectic layers what is relatively energetically costly, particularly deep in the SmA ...
27
Short-range smectic fluctuations and the flexoelectric model of modulated nematic liquid crystals
... such smectic fluctuations (cybotactic groups) persist in the nematic phase through a wide tempera- ture range, and thus might influence the elastic energy of the nematic phase profoundly ...(modulated ...
8
Smectic layer instabilities in liquid crystals
... ferroelectric liquid crystal, although phase shifted by 180 O for both domain types, the overall optic response of the horizontal chevron domain device tends to zero, independent of the position of the device ...
66
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
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] ...
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