Cargando…

Optical Microscopy Observations and Construction of Dupin Cyclides at the Isotropic/Smectic A Phase Transition

In this work, we are interested in the nucleation of bâtonnets at the Isotropic/Smectic A phase transition of 10CB liquid crystal. Very often, these bâtonnets are decorated with a large number of focal conics. We present here an example of a bâtonnet obtained by optical crossed polarized microscopy...

Descripción completa

Detalles Bibliográficos
Autores principales: Halaby Macary, Mikhael, Damême, Gauthier, Gibek, Antoine, Dubuffet, Valentin, Dupuy, Benoît, Picart, Justin, Dimeni, Roll Freddy, Meyer, Claire
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8398811/
https://www.ncbi.nlm.nih.gov/pubmed/34443061
http://dx.doi.org/10.3390/ma14164539
_version_ 1783744927617777664
author Halaby Macary, Mikhael
Damême, Gauthier
Gibek, Antoine
Dubuffet, Valentin
Dupuy, Benoît
Picart, Justin
Dimeni, Roll Freddy
Meyer, Claire
author_facet Halaby Macary, Mikhael
Damême, Gauthier
Gibek, Antoine
Dubuffet, Valentin
Dupuy, Benoît
Picart, Justin
Dimeni, Roll Freddy
Meyer, Claire
author_sort Halaby Macary, Mikhael
collection PubMed
description In this work, we are interested in the nucleation of bâtonnets at the Isotropic/Smectic A phase transition of 10CB liquid crystal. Very often, these bâtonnets are decorated with a large number of focal conics. We present here an example of a bâtonnet obtained by optical crossed polarized microscopy in a frequently observed particular area of the sample. This bâtonnet presents bulges and one of them consists of a tessellation of ellipses. These ellipses are two by two tangent, one to each other, and their confocal hyperbolas merge at the apex of the bâtonnet. We propose a numerical simulation with Python software to reproduce this tiling of ellipses as well as the shape of the smectic layers taking the well-known shape of Dupin cyclides within this particular bâtonnet area.
format Online
Article
Text
id pubmed-8398811
institution National Center for Biotechnology Information
language English
publishDate 2021
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-83988112021-08-29 Optical Microscopy Observations and Construction of Dupin Cyclides at the Isotropic/Smectic A Phase Transition Halaby Macary, Mikhael Damême, Gauthier Gibek, Antoine Dubuffet, Valentin Dupuy, Benoît Picart, Justin Dimeni, Roll Freddy Meyer, Claire Materials (Basel) Article In this work, we are interested in the nucleation of bâtonnets at the Isotropic/Smectic A phase transition of 10CB liquid crystal. Very often, these bâtonnets are decorated with a large number of focal conics. We present here an example of a bâtonnet obtained by optical crossed polarized microscopy in a frequently observed particular area of the sample. This bâtonnet presents bulges and one of them consists of a tessellation of ellipses. These ellipses are two by two tangent, one to each other, and their confocal hyperbolas merge at the apex of the bâtonnet. We propose a numerical simulation with Python software to reproduce this tiling of ellipses as well as the shape of the smectic layers taking the well-known shape of Dupin cyclides within this particular bâtonnet area. MDPI 2021-08-12 /pmc/articles/PMC8398811/ /pubmed/34443061 http://dx.doi.org/10.3390/ma14164539 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Halaby Macary, Mikhael
Damême, Gauthier
Gibek, Antoine
Dubuffet, Valentin
Dupuy, Benoît
Picart, Justin
Dimeni, Roll Freddy
Meyer, Claire
Optical Microscopy Observations and Construction of Dupin Cyclides at the Isotropic/Smectic A Phase Transition
title Optical Microscopy Observations and Construction of Dupin Cyclides at the Isotropic/Smectic A Phase Transition
title_full Optical Microscopy Observations and Construction of Dupin Cyclides at the Isotropic/Smectic A Phase Transition
title_fullStr Optical Microscopy Observations and Construction of Dupin Cyclides at the Isotropic/Smectic A Phase Transition
title_full_unstemmed Optical Microscopy Observations and Construction of Dupin Cyclides at the Isotropic/Smectic A Phase Transition
title_short Optical Microscopy Observations and Construction of Dupin Cyclides at the Isotropic/Smectic A Phase Transition
title_sort optical microscopy observations and construction of dupin cyclides at the isotropic/smectic a phase transition
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8398811/
https://www.ncbi.nlm.nih.gov/pubmed/34443061
http://dx.doi.org/10.3390/ma14164539
work_keys_str_mv AT halabymacarymikhael opticalmicroscopyobservationsandconstructionofdupincyclidesattheisotropicsmecticaphasetransition
AT damemegauthier opticalmicroscopyobservationsandconstructionofdupincyclidesattheisotropicsmecticaphasetransition
AT gibekantoine opticalmicroscopyobservationsandconstructionofdupincyclidesattheisotropicsmecticaphasetransition
AT dubuffetvalentin opticalmicroscopyobservationsandconstructionofdupincyclidesattheisotropicsmecticaphasetransition
AT dupuybenoit opticalmicroscopyobservationsandconstructionofdupincyclidesattheisotropicsmecticaphasetransition
AT picartjustin opticalmicroscopyobservationsandconstructionofdupincyclidesattheisotropicsmecticaphasetransition
AT dimenirollfreddy opticalmicroscopyobservationsandconstructionofdupincyclidesattheisotropicsmecticaphasetransition
AT meyerclaire opticalmicroscopyobservationsandconstructionofdupincyclidesattheisotropicsmecticaphasetransition