smectic liquid crystals
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 ...
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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] ...
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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
... chiral smectic liquid crystals. Hence the state of the liquid crystals transforms from a less-polar to a more- polar state by applying the electric ...
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Effect of electric field on the polarised infrared spectra of smectic liquid crystals
... m ethod to unw ind the helix and obtain m acroscopic polarisation. T hey used sufficiently thin ~ 4|im layers depends on the m aterial, and im posed surface forces to stabilise the m olecules in w hat is called bookshelf ...
179
Molecular Organisation in “de Vries” Smectic Liquid Crystals: Characterisation and Theory
... w/w does not change the smectic layer thickness of the host. Any change observed is within the experimental error. However, the electro-optics and spontaneous polarisation studies for the mixtures show an increase ...
192
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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Experimental investigations on biaxial nematic and orthogonal biaxial smectic liquid crystals
... 11 Two orthogonal smectic phases and an adjacent nematic phase This chapter describes the study of a 4-cyanoresorcinol based bent-core liquid cnjstal which exhibit an interesting phase s[r] ...
237
Controlling Defects in Nematic and Smectic Liquid Crystals Through Boundary Geometry
... Having carefully characterized the bulk nematic configuration, we now turn to the interaction of the liquid crystal with colloidal particles. Prior work has established that colloids are attracted to disclination ...
184
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 ...
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Experimental study of high temperature smectic C FI2 phase in chiral smectic liquid crystals that exhibit phase sequence reversal
... is the transition temperature between the synclinic and anti- clinic smectic phases in the absence of other intermediate phases. The last four terms in Eq. 共2兲 involve the polarization P, which is introduced by ...
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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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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 ...
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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
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
... Suppose ⌰ = const during the phase transition; it is under- standable that the smectic layer spacing does not change. But how can we envisage the existence of de Vries Sm-A? In his first paper about this topic, de ...
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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
Octadecane 1,18 diol
... Crystal structures of long-chain compounds such as n-alkanes (MuÈller, 1928) and n-higher primary alcohols (e.g. Watanabe, 1961; Seto, 1962), have been studied by many researchers from the viewpoint of basic polymer ...
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An investigation of the second order nonlinear optical properties of self assembled organic materials
... Organic crystals have been grown and exhibit some of the highest bulk non-linear effects seen to date [Bierlein e ta l, ...centrosymmetric crystals to 2-methyl-4-nitroanaline (MNA), The inclusion of the ...
137
Lattice Boltzmann method for Q tensor nemato dynamics in liquid crystal display devices
... the smectic, nematic and chiral nematic (cholesteric) according to their molecular order, see figure ...The smectic phases generally have the rod shaped molecules arranged in layers with the molecules ap ...
262
Supramolecular soft materials and structural studies of a series of BTA and pyridine dicarboxamide derivatives with various d metal ions
... microscopy technique in which an image is obtained by scanning a sample with a focused beam of electrons. The electrons interact with the electrons in the sample and produce a variety of signals that can be detected and ...
269
Development of mesophasic microreservoir-based transdermal drug delivery system of propranolol
... MMTS was packed in aluminum foils and were subjected to exaggerated stability studies e.g. temperature, humidity and aging. The stability studies data are summarized in Table 4. It was found that all the parameters did ...
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