Flat Terahertz Reflective Focusing Metasurface with Scanning Ability

Abstract The ability to manipulate the propagation properties of electromagnetic waves, e.g., divergence, focusing, holography or deflection, is very significant in terahertz applications. Metasurfaces with flat structures are attractive for achieving such manipulations in terahertz band, as they fe...

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Autores principales:	Huan Yi, Shi-Wei Qu, Bao-Jie Chen, Xue Bai, Kung Bo Ng, Chi Hou Chan
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/5ce5065c630c44158e421b14ae200674
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spelling	oai:doaj.org-article:5ce5065c630c44158e421b14ae2006742021-12-02T12:32:17ZFlat Terahertz Reflective Focusing Metasurface with Scanning Ability10.1038/s41598-017-03752-32045-2322https://doaj.org/article/5ce5065c630c44158e421b14ae2006742017-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-03752-3https://doaj.org/toc/2045-2322Abstract The ability to manipulate the propagation properties of electromagnetic waves, e.g., divergence, focusing, holography or deflection, is very significant in terahertz applications. Metasurfaces with flat structures are attractive for achieving such manipulations in terahertz band, as they feature low profile, lightweight, and ease of design and installation. Several types of terahertz reflective or transmitting metasurfaces with focusing function have been implemented recently, but none of them can provide scanning ability with controllable focus. Here, a flat reflective metasurface featuring controllable focal shift is proposed and experimentally demonstrated. Furthermore, the principle of designing a focus scanning reflective metasurface is presented and the focusing characteristics are discussed, including focus scanning along a line parallel or orthogonal to the metasurface with a large bandwidth. These interesting properties indicate that this flat reflective metasurface could play a key role in many terahertz imaging and detection systems.Huan YiShi-Wei QuBao-Jie ChenXue BaiKung Bo NgChi Hou ChanNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Huan Yi Shi-Wei Qu Bao-Jie Chen Xue Bai Kung Bo Ng Chi Hou Chan Flat Terahertz Reflective Focusing Metasurface with Scanning Ability
description	Abstract The ability to manipulate the propagation properties of electromagnetic waves, e.g., divergence, focusing, holography or deflection, is very significant in terahertz applications. Metasurfaces with flat structures are attractive for achieving such manipulations in terahertz band, as they feature low profile, lightweight, and ease of design and installation. Several types of terahertz reflective or transmitting metasurfaces with focusing function have been implemented recently, but none of them can provide scanning ability with controllable focus. Here, a flat reflective metasurface featuring controllable focal shift is proposed and experimentally demonstrated. Furthermore, the principle of designing a focus scanning reflective metasurface is presented and the focusing characteristics are discussed, including focus scanning along a line parallel or orthogonal to the metasurface with a large bandwidth. These interesting properties indicate that this flat reflective metasurface could play a key role in many terahertz imaging and detection systems.
format	article
author	Huan Yi Shi-Wei Qu Bao-Jie Chen Xue Bai Kung Bo Ng Chi Hou Chan
author_facet	Huan Yi Shi-Wei Qu Bao-Jie Chen Xue Bai Kung Bo Ng Chi Hou Chan
author_sort	Huan Yi
title	Flat Terahertz Reflective Focusing Metasurface with Scanning Ability
title_short	Flat Terahertz Reflective Focusing Metasurface with Scanning Ability
title_full	Flat Terahertz Reflective Focusing Metasurface with Scanning Ability
title_fullStr	Flat Terahertz Reflective Focusing Metasurface with Scanning Ability
title_full_unstemmed	Flat Terahertz Reflective Focusing Metasurface with Scanning Ability
title_sort	flat terahertz reflective focusing metasurface with scanning ability
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/5ce5065c630c44158e421b14ae200674
work_keys_str_mv	AT huanyi flatterahertzreflectivefocusingmetasurfacewithscanningability AT shiweiqu flatterahertzreflectivefocusingmetasurfacewithscanningability AT baojiechen flatterahertzreflectivefocusingmetasurfacewithscanningability AT xuebai flatterahertzreflectivefocusingmetasurfacewithscanningability AT kungbong flatterahertzreflectivefocusingmetasurfacewithscanningability AT chihouchan flatterahertzreflectivefocusingmetasurfacewithscanningability
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Flat Terahertz Reflective Focusing Metasurface with Scanning Ability

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