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Three-dimensional positioning and control of colloidal objects utilizing engineered liquid crystalline defect networks
Topological defects in liquid crystals not only affect the optical and rheological properties of the host, but can also act as scaffolds in which to trap nano or micro-sized colloidal objects. The creation of complex defect shapes, however, often involves confining the liquid crystals in curved geom...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Pub. Group
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4647884/ https://www.ncbi.nlm.nih.gov/pubmed/25994837 http://dx.doi.org/10.1038/ncomms8180 |
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author | Yoshida, H. Asakura, K. Fukuda, J. Ozaki, M. |
author_facet | Yoshida, H. Asakura, K. Fukuda, J. Ozaki, M. |
author_sort | Yoshida, H. |
collection | PubMed |
description | Topological defects in liquid crystals not only affect the optical and rheological properties of the host, but can also act as scaffolds in which to trap nano or micro-sized colloidal objects. The creation of complex defect shapes, however, often involves confining the liquid crystals in curved geometries or adds complex-shaped colloidal objects, which are unsuitable for device applications. Using topologically patterned substrates, here we demonstrate the controlled generation of three-dimensional defect lines with non-trivial shapes and even chirality, in a flat slab of nematic liquid crystal. By using the defect lines as templates and the electric response of the liquid crystals, colloidal superstructures are constructed, which can be reversibly reconfigured at a voltage as low as 1.3 V. Three-dimensional engineering of the defect shapes in liquid crystals is potentially useful in the fabrication of self-healing composites and in stabilizing artificial frustrated phases. |
format | Online Article Text |
id | pubmed-4647884 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Nature Pub. Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-46478842015-12-02 Three-dimensional positioning and control of colloidal objects utilizing engineered liquid crystalline defect networks Yoshida, H. Asakura, K. Fukuda, J. Ozaki, M. Nat Commun Article Topological defects in liquid crystals not only affect the optical and rheological properties of the host, but can also act as scaffolds in which to trap nano or micro-sized colloidal objects. The creation of complex defect shapes, however, often involves confining the liquid crystals in curved geometries or adds complex-shaped colloidal objects, which are unsuitable for device applications. Using topologically patterned substrates, here we demonstrate the controlled generation of three-dimensional defect lines with non-trivial shapes and even chirality, in a flat slab of nematic liquid crystal. By using the defect lines as templates and the electric response of the liquid crystals, colloidal superstructures are constructed, which can be reversibly reconfigured at a voltage as low as 1.3 V. Three-dimensional engineering of the defect shapes in liquid crystals is potentially useful in the fabrication of self-healing composites and in stabilizing artificial frustrated phases. Nature Pub. Group 2015-05-21 /pmc/articles/PMC4647884/ /pubmed/25994837 http://dx.doi.org/10.1038/ncomms8180 Text en Copyright © 2015, Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Yoshida, H. Asakura, K. Fukuda, J. Ozaki, M. Three-dimensional positioning and control of colloidal objects utilizing engineered liquid crystalline defect networks |
title | Three-dimensional positioning and control of colloidal objects utilizing engineered liquid crystalline defect networks |
title_full | Three-dimensional positioning and control of colloidal objects utilizing engineered liquid crystalline defect networks |
title_fullStr | Three-dimensional positioning and control of colloidal objects utilizing engineered liquid crystalline defect networks |
title_full_unstemmed | Three-dimensional positioning and control of colloidal objects utilizing engineered liquid crystalline defect networks |
title_short | Three-dimensional positioning and control of colloidal objects utilizing engineered liquid crystalline defect networks |
title_sort | three-dimensional positioning and control of colloidal objects utilizing engineered liquid crystalline defect networks |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4647884/ https://www.ncbi.nlm.nih.gov/pubmed/25994837 http://dx.doi.org/10.1038/ncomms8180 |
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