Journal ArticleDOI
A lattice model Monte Carlo simulation of cholesteric liquid crystal with freely rotating molecules
Jayashree Saha,M. Saha +1 more
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In this article, an earlier Monte-Carlo simulation of a cholesteric configuration of molecules is generalised in the present work allowing for full rotational degrees of freedom, and the effect of temperature on pitch has been studied and the results are compared with the results obtained from mean field and plane rotator simulation studies.Abstract:
An earlier Monte-Carlo simulation of a cholesteric configuration of molecules is generalised in the present work allowing for full rotational degrees of freedom. The effect of temperature on pitch has been studied and the results are compared with the results obtained from mean field and plane rotator model simulation studies.read more
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Generalized van der Waals theory for the twist elastic modulus and helical pitch of cholesterics
TL;DR: A generalized van der Waals theory for a lyotropic cholesteric system of chiral spherocylinders based on the classical Onsager theory for hard anisometric bodies and the variation of the pitch with density, temperature, and contour length is in qualitative agreement with recent experimental results on colloidal fd rods.
Journal ArticleDOI
Computer simulation of chiral liquid crystal phases VIII. Blue phases of the chiral Gay-Berne fluid
TL;DR: In this paper, the phase diagram of chiral calamitic liquid crystals was studied in the temperature-chirality parameter plane by means of computer simulation, and a rich polymorphism was observed along an isotherm with increasing chirality parameters describing the strength of the chiral interaction.
Journal ArticleDOI
A study of steric chirality: The chiral nematic phase of a system of chiral two-site HGO molecules
Szabolcs Varga,George Jackson +1 more
TL;DR: In this paper, the authors examined the liquid crystalline phase behavior of a chiral two-site hard Gaussian overlap fluid using the well-known Parsons-Lee extension of the theory of Onsager.
Journal ArticleDOI
Computer simulation of chiral liquid crystal phases — VII. The Chiral Gay‐Berne Discogen
TL;DR: In this paper, the phase structures of chiral discotic liquid crystals were studied by computer simulations, and a discotic cholesteric phase (ND*) and discotic blue phase (BPDII) were observed along an isotherm in dependence on the chirality parameter describing the strength of the chiral interaction.
Journal ArticleDOI
Computer simulation study of novel chiral liquid crystal phases
Tanay Paul,Jayashree Saha +1 more
References
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Journal ArticleDOI
Equation of state calculations by fast computing machines
TL;DR: In this article, a modified Monte Carlo integration over configuration space is used to investigate the properties of a two-dimensional rigid-sphere system with a set of interacting individual molecules, and the results are compared to free volume equations of state and a four-term virial coefficient expansion.
Journal ArticleDOI
The effects of shape on the interaction of colloidal particles
TL;DR: In this article, it was shown that colloids in general are apt to exhibit considerable deviations from Raoult's law and that crystalline phases retaining a fair proportion of solvent may separate from concentrated solutions.
Journal ArticleDOI
Eine einfache molekular-statistische Theorie der nematischen kristallinflüssigen Phase. Teil II
Wilhelm Maier,Alfred Saupe +1 more
TL;DR: In this paper, the authors describe a mittlere Innere Feld einer nematischen Molekülanordnung abgeleitet, and gezeigt, daß this Innere Field in einem gewissen Temperaturbereich einen nematicalhen Ordnungszustand bewirken muß and daß dieser ordnung sustand was with einer bestimmten Temperatur diskontinuierlich und unter Energieaufnahme in die isot
Journal ArticleDOI
Modification of the overlap potential to mimic a linear site-site potential
TL;DR: In this article, a modification of the overlap potential of Berne and Pechukas is proposed, and the overlap strength and range parameters are used in a new functional form resulting in a single site potential which closely resembles a linear site-site potential.
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A Molecular Theory of the Cholesteric Phase and of the Twisting Power of Optically Active Molecules in a Nematic Liqud Crystal
TL;DR: In this paper, the dispersion energy between two molecules is calcualted taking into account not only the dipole-dipole interaction but also the dipolesquadraupole interaction.