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Role of Stimuli on Liquid Crystalline Defects: From Defect Engineering to Switchable Functional Materials

Achieving tunable physical properties is currently one of the most exciting research topics. In order to realize this goal, a medium that is responsive to external stimuli and can undergo a change in its physical property is required. Liquid crystal (LC) is a prominent candidate, as its physical and...

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Autores principales: Shin, Min Jeong, Yoon, Dong Ki
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7729749/
https://www.ncbi.nlm.nih.gov/pubmed/33266312
http://dx.doi.org/10.3390/ma13235466
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author Shin, Min Jeong
Yoon, Dong Ki
author_facet Shin, Min Jeong
Yoon, Dong Ki
author_sort Shin, Min Jeong
collection PubMed
description Achieving tunable physical properties is currently one of the most exciting research topics. In order to realize this goal, a medium that is responsive to external stimuli and can undergo a change in its physical property is required. Liquid crystal (LC) is a prominent candidate, as its physical and optical properties can be easily manipulated with various stimuli, such as surface anchoring, rubbing, geometric confinement, and external fields. Having broken away from the past devotion to obtaining a uniform domain of LCs, people are now putting significant efforts toward forming and manipulating ordered and oriented defect structures with a unique arrangement within. The complicated molecular order with tunability would benefit the interdisciplinary research fields of optics, physics, photonics, and materials science. In this review, the recent progress toward defect engineering in the nematic and smectic phases by controlling the surface environment and electric field and their combinational methods is introduced. We close the review with a discussion of the possible applications enabled using LC defect structures as switchable materials.
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spelling pubmed-77297492020-12-12 Role of Stimuli on Liquid Crystalline Defects: From Defect Engineering to Switchable Functional Materials Shin, Min Jeong Yoon, Dong Ki Materials (Basel) Review Achieving tunable physical properties is currently one of the most exciting research topics. In order to realize this goal, a medium that is responsive to external stimuli and can undergo a change in its physical property is required. Liquid crystal (LC) is a prominent candidate, as its physical and optical properties can be easily manipulated with various stimuli, such as surface anchoring, rubbing, geometric confinement, and external fields. Having broken away from the past devotion to obtaining a uniform domain of LCs, people are now putting significant efforts toward forming and manipulating ordered and oriented defect structures with a unique arrangement within. The complicated molecular order with tunability would benefit the interdisciplinary research fields of optics, physics, photonics, and materials science. In this review, the recent progress toward defect engineering in the nematic and smectic phases by controlling the surface environment and electric field and their combinational methods is introduced. We close the review with a discussion of the possible applications enabled using LC defect structures as switchable materials. MDPI 2020-11-30 /pmc/articles/PMC7729749/ /pubmed/33266312 http://dx.doi.org/10.3390/ma13235466 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 Review
Shin, Min Jeong
Yoon, Dong Ki
Role of Stimuli on Liquid Crystalline Defects: From Defect Engineering to Switchable Functional Materials
title Role of Stimuli on Liquid Crystalline Defects: From Defect Engineering to Switchable Functional Materials
title_full Role of Stimuli on Liquid Crystalline Defects: From Defect Engineering to Switchable Functional Materials
title_fullStr Role of Stimuli on Liquid Crystalline Defects: From Defect Engineering to Switchable Functional Materials
title_full_unstemmed Role of Stimuli on Liquid Crystalline Defects: From Defect Engineering to Switchable Functional Materials
title_short Role of Stimuli on Liquid Crystalline Defects: From Defect Engineering to Switchable Functional Materials
title_sort role of stimuli on liquid crystalline defects: from defect engineering to switchable functional materials
topic Review
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7729749/
https://www.ncbi.nlm.nih.gov/pubmed/33266312
http://dx.doi.org/10.3390/ma13235466
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