Shaping electromagnetic waves using software-automatically-designed metasurfaces

Abstract We present a fully digital procedure of designing reflective coding metasurfaces to shape reflected electromagnetic waves. The design procedure is completely automatic, controlled by a personal computer. In details, the macro coding units of metasurface are automatically divided into severa...

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Autores principales:	Qian Zhang, Xiang Wan, Shuo Liu, Jia Yuan Yin, Lei Zhang, Tie Jun Cui
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/33213831d761418193521abea010f6fe
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spelling	oai:doaj.org-article:33213831d761418193521abea010f6fe2021-12-02T11:52:30ZShaping electromagnetic waves using software-automatically-designed metasurfaces10.1038/s41598-017-03764-z2045-2322https://doaj.org/article/33213831d761418193521abea010f6fe2017-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-03764-zhttps://doaj.org/toc/2045-2322Abstract We present a fully digital procedure of designing reflective coding metasurfaces to shape reflected electromagnetic waves. The design procedure is completely automatic, controlled by a personal computer. In details, the macro coding units of metasurface are automatically divided into several types (e.g. two types for 1-bit coding, four types for 2-bit coding, etc.), and each type of the macro coding units is formed by discretely random arrangement of micro coding units. By combining an optimization algorithm and commercial electromagnetic software, the digital patterns of the macro coding units are optimized to possess constant phase difference for the reflected waves. The apertures of the designed reflective metasurfaces are formed by arranging the macro coding units with certain coding sequence. To experimentally verify the performance, a coding metasurface is fabricated by automatically designing two digital 1-bit unit cells, which are arranged in array to constitute a periodic coding metasurface to generate the required four-beam radiations with specific directions. Two complicated functional metasurfaces with circularly- and elliptically-shaped radiation beams are realized by automatically designing 4-bit macro coding units, showing excellent performance of the automatic designs by software. The proposed method provides a smart tool to realize various functional devices and systems automatically.Qian ZhangXiang WanShuo LiuJia Yuan YinLei ZhangTie Jun CuiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-11 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Qian Zhang Xiang Wan Shuo Liu Jia Yuan Yin Lei Zhang Tie Jun Cui Shaping electromagnetic waves using software-automatically-designed metasurfaces
description	Abstract We present a fully digital procedure of designing reflective coding metasurfaces to shape reflected electromagnetic waves. The design procedure is completely automatic, controlled by a personal computer. In details, the macro coding units of metasurface are automatically divided into several types (e.g. two types for 1-bit coding, four types for 2-bit coding, etc.), and each type of the macro coding units is formed by discretely random arrangement of micro coding units. By combining an optimization algorithm and commercial electromagnetic software, the digital patterns of the macro coding units are optimized to possess constant phase difference for the reflected waves. The apertures of the designed reflective metasurfaces are formed by arranging the macro coding units with certain coding sequence. To experimentally verify the performance, a coding metasurface is fabricated by automatically designing two digital 1-bit unit cells, which are arranged in array to constitute a periodic coding metasurface to generate the required four-beam radiations with specific directions. Two complicated functional metasurfaces with circularly- and elliptically-shaped radiation beams are realized by automatically designing 4-bit macro coding units, showing excellent performance of the automatic designs by software. The proposed method provides a smart tool to realize various functional devices and systems automatically.
format	article
author	Qian Zhang Xiang Wan Shuo Liu Jia Yuan Yin Lei Zhang Tie Jun Cui
author_facet	Qian Zhang Xiang Wan Shuo Liu Jia Yuan Yin Lei Zhang Tie Jun Cui
author_sort	Qian Zhang
title	Shaping electromagnetic waves using software-automatically-designed metasurfaces
title_short	Shaping electromagnetic waves using software-automatically-designed metasurfaces
title_full	Shaping electromagnetic waves using software-automatically-designed metasurfaces
title_fullStr	Shaping electromagnetic waves using software-automatically-designed metasurfaces
title_full_unstemmed	Shaping electromagnetic waves using software-automatically-designed metasurfaces
title_sort	shaping electromagnetic waves using software-automatically-designed metasurfaces
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/33213831d761418193521abea010f6fe
work_keys_str_mv	AT qianzhang shapingelectromagneticwavesusingsoftwareautomaticallydesignedmetasurfaces AT xiangwan shapingelectromagneticwavesusingsoftwareautomaticallydesignedmetasurfaces AT shuoliu shapingelectromagneticwavesusingsoftwareautomaticallydesignedmetasurfaces AT jiayuanyin shapingelectromagneticwavesusingsoftwareautomaticallydesignedmetasurfaces AT leizhang shapingelectromagneticwavesusingsoftwareautomaticallydesignedmetasurfaces AT tiejuncui shapingelectromagneticwavesusingsoftwareautomaticallydesignedmetasurfaces
_version_	1718395039029133312

Shaping electromagnetic waves using software-automatically-designed metasurfaces

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