This title appears in the Scientific Report :
2006
Please use the identifier:
http://dx.doi.org/10.1063/1.2338313 in citations.
Please use the identifier: http://hdl.handle.net/2128/2229 in citations.
Two-dimensional chiral model for liquid crystals, bent hard needles: a Monte Carlo simulation
Two-dimensional chiral model for liquid crystals, bent hard needles: a Monte Carlo simulation
The liquid crystalline behavior of a two dimensional (2D) model of hard needles bent into a "zigzag shape" is studied. This model, originally designed to study two dimensional chiral segregation, also shows liquid crystalline behavior and has some anomalous features which are contrasted in...
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Personal Name(s): | Peón, J. |
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Saucedo-Zugazagoitia, J. / Pucheta-Mendez, F. / Perusquía, R.A. / Sutmann, G. / Quintana-H, J. | |
Contributing Institute: |
Zentralinstitut für Angewandte Mathematik; ZAM |
Published in: | The @journal of chemical physics, 125 (2006) S. 104908 |
Imprint: |
Melville, NY
American Institute of Physics
2006
|
Physical Description: |
104908 |
DOI: |
10.1063/1.2338313 |
PubMed ID: |
16999551 |
Document Type: |
Journal Article |
Research Program: |
Scientific Computing |
Series Title: |
Journal of Chemical Physics
125 |
Subject (ZB): | |
Link: |
Get full text OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/2229 in citations.
The liquid crystalline behavior of a two dimensional (2D) model of hard needles bent into a "zigzag shape" is studied. This model, originally designed to study two dimensional chiral segregation, also shows liquid crystalline behavior and has some anomalous features which are contrasted in relation to the following: (i) Most of the microscopical models used to study liquid crystals have a symmetry axis that coincides with a molecular axis; (ii) in three-dimensions, chiral molecules can form cholesteric instead of nematic phases; (iii) the smectic phase is usually found when attractions are present or at least when the molecules have finite volume. Despite the fact that the present 2D model does not have any of these characteristics, numerical evidence is found for the occurrence of nematic and smectic phases. Since these molecules are athermal, infinitely repulsive, and infinitesimally thin, the liquid crystalline characteristics are attributed to excluded volume effects. To determine the mesophases of the model, both nematic and smectic order parameters as well as distribution functions are computed. |