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Anisotropic fluid with phototunable dielectric permittivity
Dielectric permittivity, a measure of polarisability, is a fundamental parameter that dominates various physical phenomena and properties of materials. However, it remains a challenge to control the dielectric permittivity of materials reversibly over a large range. Herein, we report an anisotropic...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8894468/ https://www.ncbi.nlm.nih.gov/pubmed/35241651 http://dx.doi.org/10.1038/s41467-022-28763-1 |
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author | Nishikawa, Hiroya Sano, Koki Araoka, Fumito |
author_facet | Nishikawa, Hiroya Sano, Koki Araoka, Fumito |
author_sort | Nishikawa, Hiroya |
collection | PubMed |
description | Dielectric permittivity, a measure of polarisability, is a fundamental parameter that dominates various physical phenomena and properties of materials. However, it remains a challenge to control the dielectric permittivity of materials reversibly over a large range. Herein, we report an anisotropic fluid with photoresponsive dielectric permittivity (200 < ε < 18,000) consisting of a fluorinated liquid-crystalline molecule (96 wt%) and an azobenzene-tethered phototrigger (4 wt%). The reversible trans-cis isomerisation of the phototrigger under blue and green light irradiation causes a switch between two liquid-crystalline phases that exhibit different dielectric permittivities, with a rapid response time (<30 s) and excellent reversibility (~100 cycles). This anisotropic fluid can be used as a flexible photovariable capacitor that, for example, allows the reversible modulation of the sound frequency over a wide range (100 < f < 8500 Hz) in a remote manner using blue and green wavelengths. |
format | Online Article Text |
id | pubmed-8894468 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-88944682022-03-17 Anisotropic fluid with phototunable dielectric permittivity Nishikawa, Hiroya Sano, Koki Araoka, Fumito Nat Commun Article Dielectric permittivity, a measure of polarisability, is a fundamental parameter that dominates various physical phenomena and properties of materials. However, it remains a challenge to control the dielectric permittivity of materials reversibly over a large range. Herein, we report an anisotropic fluid with photoresponsive dielectric permittivity (200 < ε < 18,000) consisting of a fluorinated liquid-crystalline molecule (96 wt%) and an azobenzene-tethered phototrigger (4 wt%). The reversible trans-cis isomerisation of the phototrigger under blue and green light irradiation causes a switch between two liquid-crystalline phases that exhibit different dielectric permittivities, with a rapid response time (<30 s) and excellent reversibility (~100 cycles). This anisotropic fluid can be used as a flexible photovariable capacitor that, for example, allows the reversible modulation of the sound frequency over a wide range (100 < f < 8500 Hz) in a remote manner using blue and green wavelengths. Nature Publishing Group UK 2022-03-03 /pmc/articles/PMC8894468/ /pubmed/35241651 http://dx.doi.org/10.1038/s41467-022-28763-1 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Nishikawa, Hiroya Sano, Koki Araoka, Fumito Anisotropic fluid with phototunable dielectric permittivity |
title | Anisotropic fluid with phototunable dielectric permittivity |
title_full | Anisotropic fluid with phototunable dielectric permittivity |
title_fullStr | Anisotropic fluid with phototunable dielectric permittivity |
title_full_unstemmed | Anisotropic fluid with phototunable dielectric permittivity |
title_short | Anisotropic fluid with phototunable dielectric permittivity |
title_sort | anisotropic fluid with phototunable dielectric permittivity |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8894468/ https://www.ncbi.nlm.nih.gov/pubmed/35241651 http://dx.doi.org/10.1038/s41467-022-28763-1 |
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