Orientational dependence of the potential of mean force for a discotic liquid crystal near a substrate |
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Authors: | Daniel Salgado-Blanco Carlos I. Mendoza Enrique Díaz-Herrera |
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Affiliation: | 1. Cátedras CONACyT – Centro Nacional de Supercómputo, Instituto Potosino de Investigación Científica y Tecnológica, San Luis Potosí, México daniel.salgado@ipicyt.edu.mxhttps://orcid.org/0000-0002-2527-3027;3. Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Ciudad de México, Mexico;4. Departamento de Física, Universidad Autónoma Metropolitana-Iztapalapa, Ciudad de México, Mexico |
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Abstract: | In this work we calculate the potential of mean force for a discotic liquid crystal (DLC) confined in a slab geometry. We have set the reaction coordinate as the distance between a DLC test particle with a fixed orientation and a wall with face-on anchoring. Five different orientations of the DLC test particle are explored, which correspond to parallel and perpendicular orientations with regard to the anchoring promoted by the walls, and three intermediate orientations between the parallel and perpendicular configurations. The potential of mean force reflects the strong effect of the system's anisotropy: particles with the wrong orientation are energetically penalised whilst the particles with the correct orientation are favoured. |
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Keywords: | Liquid crystals molecular simulations potential of mean force |
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