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Accurate, Efficient and Rigorous Numerical Analysis of 3D H-PDLC Gratings
This work presents recent results derived from the rigorous modelling of holographic polymer-dispersed liquid crystal (H-PDLC) gratings. More precisely, the diffractive properties of transmission gratings are the focus of this research. This work extends previous analysis performed by the authors bu...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7503346/ https://www.ncbi.nlm.nih.gov/pubmed/32842544 http://dx.doi.org/10.3390/ma13173725 |
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author | Francés, Jorge Bleda, Sergio Puerto, Daniel Gallego, Sergi Márquez, Andrés Neipp, Cristian Pascual, Inmaculada Beléndez, Augusto |
author_facet | Francés, Jorge Bleda, Sergio Puerto, Daniel Gallego, Sergi Márquez, Andrés Neipp, Cristian Pascual, Inmaculada Beléndez, Augusto |
author_sort | Francés, Jorge |
collection | PubMed |
description | This work presents recent results derived from the rigorous modelling of holographic polymer-dispersed liquid crystal (H-PDLC) gratings. More precisely, the diffractive properties of transmission gratings are the focus of this research. This work extends previous analysis performed by the authors but includes new features and approaches. More precisely, full 3D numerical modelling was carried out in all analyses. Each H-PDLC sample was generated randomly by a set of ellipsoid geometry-based LC droplets. The liquid crystal (LC) director inside each droplet was computed by the minimisation of the Frank elastic free energy as a function of the applied electric field. The analysis carried out considered the effects of Frank elastic constants [Formula: see text] , [Formula: see text] and [Formula: see text]; the anchoring strength [Formula: see text]; and even the saddle-splay constant [Formula: see text]. The external electric field induced an orientation of the LC director, modifying the optical anisotropy of the optical media. This effect was analysed using the 3D split-field finite-difference time-domain (SF-FDTD) method. In order to reduce the computational costs due to a full 3D tensorial analysis, a highly optimised method for high-performance computing solutions (HPC) was developed. The influences of the anchoring and voltage on the diffraction efficiencies were investigated, showing the potential of this approach. |
format | Online Article Text |
id | pubmed-7503346 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-75033462020-09-23 Accurate, Efficient and Rigorous Numerical Analysis of 3D H-PDLC Gratings Francés, Jorge Bleda, Sergio Puerto, Daniel Gallego, Sergi Márquez, Andrés Neipp, Cristian Pascual, Inmaculada Beléndez, Augusto Materials (Basel) Article This work presents recent results derived from the rigorous modelling of holographic polymer-dispersed liquid crystal (H-PDLC) gratings. More precisely, the diffractive properties of transmission gratings are the focus of this research. This work extends previous analysis performed by the authors but includes new features and approaches. More precisely, full 3D numerical modelling was carried out in all analyses. Each H-PDLC sample was generated randomly by a set of ellipsoid geometry-based LC droplets. The liquid crystal (LC) director inside each droplet was computed by the minimisation of the Frank elastic free energy as a function of the applied electric field. The analysis carried out considered the effects of Frank elastic constants [Formula: see text] , [Formula: see text] and [Formula: see text]; the anchoring strength [Formula: see text]; and even the saddle-splay constant [Formula: see text]. The external electric field induced an orientation of the LC director, modifying the optical anisotropy of the optical media. This effect was analysed using the 3D split-field finite-difference time-domain (SF-FDTD) method. In order to reduce the computational costs due to a full 3D tensorial analysis, a highly optimised method for high-performance computing solutions (HPC) was developed. The influences of the anchoring and voltage on the diffraction efficiencies were investigated, showing the potential of this approach. MDPI 2020-08-23 /pmc/articles/PMC7503346/ /pubmed/32842544 http://dx.doi.org/10.3390/ma13173725 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Francés, Jorge Bleda, Sergio Puerto, Daniel Gallego, Sergi Márquez, Andrés Neipp, Cristian Pascual, Inmaculada Beléndez, Augusto Accurate, Efficient and Rigorous Numerical Analysis of 3D H-PDLC Gratings |
title | Accurate, Efficient and Rigorous Numerical Analysis of 3D H-PDLC Gratings |
title_full | Accurate, Efficient and Rigorous Numerical Analysis of 3D H-PDLC Gratings |
title_fullStr | Accurate, Efficient and Rigorous Numerical Analysis of 3D H-PDLC Gratings |
title_full_unstemmed | Accurate, Efficient and Rigorous Numerical Analysis of 3D H-PDLC Gratings |
title_short | Accurate, Efficient and Rigorous Numerical Analysis of 3D H-PDLC Gratings |
title_sort | accurate, efficient and rigorous numerical analysis of 3d h-pdlc gratings |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7503346/ https://www.ncbi.nlm.nih.gov/pubmed/32842544 http://dx.doi.org/10.3390/ma13173725 |
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