Chiral smectic
WebThis clearly indicates that dipole interactions promote layered structures; however, the transition to a full smectic phase is inhibited when chiral interactions are present. … WebApr 10, 2024 · ABSTRACT. In this article, we report on the synthesis of chiral bimesogens that possess silyloxy central linking groups. On first examination of the mesomorphic properties of the materials by X-ray diffraction and electrical field studies we came to the conclusion that the materials exhibit ferroelectric and antiferroelectric smectic C* phase …
Chiral smectic
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WebFeb 1, 2010 · This work deals with determination of the viscoelasticity coefficient in chiral smectic liquid crystals possessing the helical structure and is the continuation of the work, in which the ... WebChirality has been reported to play an important role in controlling and mediating the self-assembly of gels. There have been a few reports on molecular chirality–regulated tuning …
WebThis article deals with modeling and analysis of chiral smectic C liquid crystals and their ferroelectric phases. The polarization field plays an important role in the problem. The total energy of the smectic C* contains the Oseen-Frank free energy of the nematic,... WebIn smectic C systems, doping with chiral mesogens induces the formation of domains with permanent electric dipole moment, which exhibit piezoelectric properties. Orientation of the mesogen in a uniaxial mechanical field and subsequent cross-linking produce a centrosymmetric morphology, where the piezoelectric effects are averaged out on a ...
WebLiquid crystal (LC) is a state of matter whose properties are between those of conventional liquids and those of solid crystals.For example, a liquid crystal may flow like a liquid, but … WebMar 16, 2024 · Conglomerates of chiral domains were observed in the high permittivity ranges of the synclinic tilted paraelectric smectic phases of these achiral molecules, …
WebAbstract Phase sequence of a chiral smectic liquid crystal, MHPOPB, in which the biphenyl group is separated into two phenyl rings by introducing an ester bond in the core of the …
WebApr 23, 2024 · If chiral molecules form a nematic or tilted smectic phase, the neighboring molecules tend to twist with respect to each other and a helix is formed 1. In some cases, the structure is further ... first presbyterian church haines city flWebThis article deals with modeling and analysis of chiral smectic C liquid crystals and their ferroelectric phases. The polarization field plays an important role in the problem. The … first presbyterian church harvard ilWebOptical-activity measurements in the smectic-A phase of various chiral-racemic mixtures of S-4-(2'-methylbutyl)phenyl-4'-n-octylbiphenyl-4-carboxylate (CE8) demonstrate that … first presbyterian church harrison arWebJul 24, 2009 · First, saddle splay deformation of a tilted chiral smectic is itself inherently chiral, as expressed by the p·L·c coupling leading to Eq. 1, meaning that of the B2 … first presbyterian church hartfordWebOct 11, 2010 · Biological liquid crystalline polymers are found in cellulosic, chitin, and DNA based natural materials. Chiral nematic liquid crystalline orientational order is observed frozen-in in the solid state in plant cell walls and is known as a liquid crystal analogue characterized by a helicoidal plywood architecture. The emergence of the plywood … first presbyterian church hattiesburgWebChirality in molecules devoid of chiral centers occurs in both natural and synthetic substances, which have enormous importance as ligands in asymmetric catalysis, and some exhibit biological activity (e.g., the antifertility agent gossypol, Figure 22.2).Molecules belonging to this class of stereoisomers include biphenyls, allenes, spiranes, helicenes, … first presbyterian church hastingsWebJul 20, 2016 · chiral: [adjective] of or relating to a molecule that is not superimposable on its mirror image. first presbyterian church hastings mi