Switchable Multifunctional Meta-Surface Composed by Dielectric-Metal Hybrid Antenna Array Architecture

Strontium titanate (STO), the dielectric material, has caught the world’s attention due to its outstanding properties, such as high permittivity, high refractive index, and low loss in the terahertz band. Its permittivity is relevant to the environment temperature. Herein, a multifunctional meta-sur...

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Autores principales:	Yule Huang, Jiaxin Yang, Ying Zhang, Zhongchao Wei, Hongzhan Liu, Jianping Guo
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	optical antenna perfect absorber polarization converter terahertz device Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/b959acab5a61443689553633f3da9549
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spelling	oai:doaj.org-article:b959acab5a61443689553633f3da95492021-11-25T18:30:26ZSwitchable Multifunctional Meta-Surface Composed by Dielectric-Metal Hybrid Antenna Array Architecture10.3390/nano111128622079-4991https://doaj.org/article/b959acab5a61443689553633f3da95492021-10-01T00:00:00Zhttps://www.mdpi.com/2079-4991/11/11/2862https://doaj.org/toc/2079-4991Strontium titanate (STO), the dielectric material, has caught the world’s attention due to its outstanding properties, such as high permittivity, high refractive index, and low loss in the terahertz band. Its permittivity is relevant to the environment temperature. Herein, a multifunctional meta-surface composed of a dielectric-metal hybrid antenna array has been demonstrated, which is a single-layer STO elliptic cylinder. On the one hand, when the environment temperature is 300 K, the proposed meta-surface can achieve perfect absorption and polarization conversion in the frequency range from 0.1 to 0.25 THz; particularly, the meta-surface absorptance can reach 99.97% and 99.92% at a frequency of 0.103 and 0.13 THz respectively, and while it is used as a polarization conversion device, the degree of circular polarization and the ellipticity angle can reach 0.986 and 44.5° at a frequency of 0.228 THz. On the other hand, when the environment temperature changes from 300 to 450 K, the absorption peak changes with the temperature, and the average absorptance reaches 96% at resonance frequency. The proposed meta-surface can be applied in many fields, such as optical sensing, imaging, and energy harvesting. Moreover, it provides a potential solution to research the integrated device in a complex electromagnetic environment.Yule HuangJiaxin YangYing ZhangZhongchao WeiHongzhan LiuJianping GuoMDPI AGarticleoptical antennaperfect absorberpolarization converterterahertz deviceChemistryQD1-999ENNanomaterials, Vol 11, Iss 2862, p 2862 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	optical antenna perfect absorber polarization converter terahertz device Chemistry QD1-999
spellingShingle	optical antenna perfect absorber polarization converter terahertz device Chemistry QD1-999 Yule Huang Jiaxin Yang Ying Zhang Zhongchao Wei Hongzhan Liu Jianping Guo Switchable Multifunctional Meta-Surface Composed by Dielectric-Metal Hybrid Antenna Array Architecture
description	Strontium titanate (STO), the dielectric material, has caught the world’s attention due to its outstanding properties, such as high permittivity, high refractive index, and low loss in the terahertz band. Its permittivity is relevant to the environment temperature. Herein, a multifunctional meta-surface composed of a dielectric-metal hybrid antenna array has been demonstrated, which is a single-layer STO elliptic cylinder. On the one hand, when the environment temperature is 300 K, the proposed meta-surface can achieve perfect absorption and polarization conversion in the frequency range from 0.1 to 0.25 THz; particularly, the meta-surface absorptance can reach 99.97% and 99.92% at a frequency of 0.103 and 0.13 THz respectively, and while it is used as a polarization conversion device, the degree of circular polarization and the ellipticity angle can reach 0.986 and 44.5° at a frequency of 0.228 THz. On the other hand, when the environment temperature changes from 300 to 450 K, the absorption peak changes with the temperature, and the average absorptance reaches 96% at resonance frequency. The proposed meta-surface can be applied in many fields, such as optical sensing, imaging, and energy harvesting. Moreover, it provides a potential solution to research the integrated device in a complex electromagnetic environment.
format	article
author	Yule Huang Jiaxin Yang Ying Zhang Zhongchao Wei Hongzhan Liu Jianping Guo
author_facet	Yule Huang Jiaxin Yang Ying Zhang Zhongchao Wei Hongzhan Liu Jianping Guo
author_sort	Yule Huang
title	Switchable Multifunctional Meta-Surface Composed by Dielectric-Metal Hybrid Antenna Array Architecture
title_short	Switchable Multifunctional Meta-Surface Composed by Dielectric-Metal Hybrid Antenna Array Architecture
title_full	Switchable Multifunctional Meta-Surface Composed by Dielectric-Metal Hybrid Antenna Array Architecture
title_fullStr	Switchable Multifunctional Meta-Surface Composed by Dielectric-Metal Hybrid Antenna Array Architecture
title_full_unstemmed	Switchable Multifunctional Meta-Surface Composed by Dielectric-Metal Hybrid Antenna Array Architecture
title_sort	switchable multifunctional meta-surface composed by dielectric-metal hybrid antenna array architecture
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/b959acab5a61443689553633f3da9549
work_keys_str_mv	AT yulehuang switchablemultifunctionalmetasurfacecomposedbydielectricmetalhybridantennaarrayarchitecture AT jiaxinyang switchablemultifunctionalmetasurfacecomposedbydielectricmetalhybridantennaarrayarchitecture AT yingzhang switchablemultifunctionalmetasurfacecomposedbydielectricmetalhybridantennaarrayarchitecture AT zhongchaowei switchablemultifunctionalmetasurfacecomposedbydielectricmetalhybridantennaarrayarchitecture AT hongzhanliu switchablemultifunctionalmetasurfacecomposedbydielectricmetalhybridantennaarrayarchitecture AT jianpingguo switchablemultifunctionalmetasurfacecomposedbydielectricmetalhybridantennaarrayarchitecture
_version_	1718411100775514112

Switchable Multifunctional Meta-Surface Composed by Dielectric-Metal Hybrid Antenna Array Architecture

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