Computer Simulation of Confined Liquid Crystal Dynamics PDF Download
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Author: R. E. Webster
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Author: R. E. Webster
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
Author: R. E. Webster
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Wojciech Gwizdała
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Paolo Pasini
Publisher: Springer Science & Business Media
ISBN: 9401142254
Category : Science
Languages : en
Pages : 435
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Book Description
Computer simulations provide an essential set of tools for understanding the macroscopic properties of liquid crystals and of their phase transitions in terms of molecular models. While simulations of liquid crystals are based on the same general Monte Carlo and molecular dynamics techniques as are used for other fluids, they present a number of specific problems and peculiarities connected to the intrinsic properties of these mesophases. The field of computer simulations of anisotropic fluids is interdisciplinary and is evolving very rapidly. The present volume covers a variety of techniques and model systems, from lattices to hard particle and Gay-Berne to atomistic, for thermotropics, lyotropics, and some biologically interesting liquid crystals. Contributions are written by an excellent panel of international lecturers and provides a timely account of the techniques and problems in the field.
Author: Claudio Zannoni
Publisher: Cambridge University Press
ISBN: 1108424058
Category : Science
Languages : en
Pages : 703
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Book Description
A comprehensive introduction to liquid crystals and their computer simulations suitable for students, researchers and industrial scientists.
Author: Alireza Shams
Publisher:
ISBN:
Category :
Languages : en
Pages :
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"Liquid crystals are self-organized viscoelastic materials with long range partial orientational order. Imperfection in this order gives rise to point, line, and wall defects whose dynamics and geometry reflects their anisotropic elasticity and viscosity. For line defects confinement acts as an external field that affects defect dynamics and geometric line curvature. The present thesis uses the renormalization of line defect dynamics and geometry due to confinement to extract viscoelastic properties, thus avoiding complex rheological measurement. The chosen geometries are cylindrical and conical capillaries, where the latter displays confinement gradients common in biological liquid crystal self-assembly. The work starts with the classical theory of liquid crystal elasticity which in 1dimension is shown for the first time to map into the Euler elastica model for elastic strings with tension and bending stiffness. The tension and bending coefficients in the liquid crystal elastic are derived in terms of elastic moduli of the bulk phase.Using thermal quenches, textural transformations involving disclination lines are found and described using geometric-elastica models. The different stages in the transformations have unique features such as branching, loop collisions, loop growth, that are compared for cylindrical capillaries to actual experiments from our team experimental collaborators. The extracted viscoelastic data are shown to be in good agreement with available viscoelastic data. The theory and modelling was extended to conical capillaries and new predictions due to confinement-driven gradients are analyzed. The developed theory and simulations provides an efficient new methodology to use defect physics for quantitative predict viscoelastic properties in anisotropic soft matter." --
Author: Huangli Wu
Publisher:
ISBN:
Category : Liquid crystals
Languages : en
Pages :
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Recent research shows that liquid crystals can be used to report the presence of different types of substances through optical amplication of ligand-receptor binding. In this work, simulations based on a coarse-grained method have been performed to study a class of liquid-crystal-based sensors. A tensor order parameter was used to model the liquid crystalline system and the Beris-Edwards formulation was employed to obtain the time evolution of a liquid crystal medium containing particles. The simulation cases are built using three-dimensional unstructured meshes and the simulation geometries studied include simple models involving spheres as well as detailed modeling for a protein. The dynamics of a liquid crystal medium confined between two solid walls has been studied in the presence of spherical particles and a representative biological acromolecule. Comparisons of steady state and transient solutions from the present study with corresponding results from molecular dynamics based simulations in the literature yield good agreements.
Author: Oleg D. Lavrentovich
Publisher: Springer Science & Business Media
ISBN: 9781402001703
Category : Science
Languages : en
Pages : 364
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Book Description
Proceedings of the NATO Advanced Research Workshop on Computer Simulations of Defects in Liquid Crystals Including their Relation to Theory and Experiment, held in Erice, Sicily, Italy, 19-23 September 2000
Author: Sami Mkaddem
Publisher:
ISBN:
Category : Finite element method
Languages : en
Pages : 210
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Book Description
Author: M. P. Allen
Publisher: Oxford University Press
ISBN: 0198803192
Category : Computers
Languages : en
Pages : 641
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Book Description
This is the second edition of a widely used practical guide to computer simulations of liquids. The technique uses a model for the way molecules interact, to predict how large numbers of them behave in liquid state. This essential introduction to this rapidly growing field is complete with illustrative computer code.
