smectic layers
On the biaxiality of smectic C and ferroelectric liquid crystals
... The devices constructed in reference [3] were fabricated by shearing the upper and lower surfaces to ensure that the smectic layers were uniform, and normal to the substrates and the shear direction. Such a ...
67
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
Discrete flexoelectric polarizations and biaxial subphases with periodicities other than 3 and 4 layers in chiral smectic liquid crystals frustrated between ferroelectricity and antiferroelectricity
... four layers 兲 is also ...separated smectic layers emerge after the minimization of free energy with respect to the total 共 ordinary spontaneous and discrete flexoelectric 兲 polarizations, lifting the ...
13
Anisotropy of the elastic constants in SmC* liquid crystal films
... The smectic cone angle h is therefore fixed and the interlayer spacing is ...the smectic layer and c ¼ ðcos /ðxÞ, sin /ðxÞ; 0Þ is the unit orthogonal projection of n onto the smectic layers ...
9
Smectic layer instabilities in liquid crystals
... called smectic layer rotation or smectic layer rotational ...of smectic layers in mainly the SmC* phase, but due to the electroclinic effect also in the SmA* ...the smectic layer normal ...
66
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 ...predict layers forming complex surfaces ...
15
Controlling Defects in Nematic and Smectic Liquid Crystals Through Boundary Geometry
... of smectic layers between neighboring FCDs on a nonuniform substrate presents an intriguing theoretical problem for which we have suggested a geometric ...
184
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
Theory of the intermediate tilted smectic phases and their helical rotation
... tilted smectic phases 共 including both biaxial and uniaxial ones 兲 are presented in terms of the molecular parameters 共in particular, the dipole and the quadrupole moments兲 and ...four smectic layers ...
17
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 ...
11
Experimental study of high temperature smectic C FI2 phase in chiral smectic liquid crystals that exhibit phase sequence reversal
... in the heating mode. Even though the conoscopic figures at 70 ° C 关image 5共d兲兴 show signature similar to those of a SmC FI2 ⴱ phase, the signature is not that of a typical SmC FI2 ⴱ phase reported in the literature 关 4 ...
9
Molecular simulation of chevrons in confined smectic liquid crystals
... The profile of the stabilised chevron structure showed a small melted tip region as well as disordered regions near each surface. The effect of the pe- riodic boundary conditions on the local tip structure is likely to ...
42
Fractal Growth of a Conventional Calamitic Liquid Crystal
... for smectic layer formation and growth within a smectic layer, as is observed for the majority of conventional calamitic ...the smectic layer plane, as pro- vided by hydrogen bonding for 8DBH, are ...
8
Effective long range interlayer interactions and electric field induced subphases in ferrielectric liquid crystals
... and [L] refer to the numbers of smectic layers with directors tilted to the right and to the left, respectively, in the unit cell of a field-induced subphase. We show that the model actually stabilizes the ...
12
Comparison of the characteristics of the chiral analog of the de Vries type of smectic A* phase
... It is clearly seen from the experimental results that mate- rials under investigation do not possess a conventional SmA phase, except the de Vries type of SmA * phase but their behavior to the induced tilt angle 共 ...
6
Effect of cell surfaces on the stability of chiral smectic C phases
... three smectic-C * 共SmC * 兲 phases SmC A * , SmC ␣ * , and SmC ␥ * in ...the layers as 3 and 4, ...next-nearest smectic layers and by assuming the temperature dependence of the tilt angle ...
8
Computer simulation of confined liquid crystal dynamics
... of smectic layers in the central region, allowing the two initial smectic domains to ...central smectic domain to form; the large twist angle allowing the period of the smectic ...
229
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 layer with ...
35
Spontaneous helix formation in non chiral bent core liquid crystals with fast linear electro optic effect
... and smectic layer normal reveal a modulated structure with a distance of B14 nm, corresponding to approximately three ...neighbouring smectic layers similar to the model suggested by Pikin et ...
8
Synchrotron X-ray investigation of the layer spacing in a series of low molar mass bi-mesogen organosiloxane smectic materials.
... material 10Dim has an almost temperature independent tilt angle of 36 degrees. The material displays two regimes of response depending on the amplitude of the applied field. At low fields a uniform ferroelectric ...
12