Achieving low-emissivity materials with high transmission for broadband radio-frequency signals

Abstract The use of low-emissivity (low-e) materials in modern buildings is an extremely efficient way to save energy. However, such materials are coated by metallic films, which can strongly block radio-frequency signals and prevent indoor-outdoor wireless communication. Here, we demonstrate that,...

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Autores principales:	Liu Liu, Huiting Chang, Tao Xu, Yanan Song, Chi Zhang, Zhi Hong Hang, Xinhua Hu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/82e6534d6dcc48ca89051d64b6149a52
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spelling	oai:doaj.org-article:82e6534d6dcc48ca89051d64b6149a522021-12-02T16:07:46ZAchieving low-emissivity materials with high transmission for broadband radio-frequency signals10.1038/s41598-017-04988-92045-2322https://doaj.org/article/82e6534d6dcc48ca89051d64b6149a522017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-04988-9https://doaj.org/toc/2045-2322Abstract The use of low-emissivity (low-e) materials in modern buildings is an extremely efficient way to save energy. However, such materials are coated by metallic films, which can strongly block radio-frequency signals and prevent indoor-outdoor wireless communication. Here, we demonstrate that, when specially-designed metallic metasurfaces are covered on them, the low-e materials can remain low emissivity for thermal radiation and allow very high transmission for a broad band of radio-frequency signals. It is found that the application of air-connected metasurfaces with subwavelength periods is critical to the observed high transmission. Such effects disappear if periods are comparable to wavelengths or metal-connected structures are utilized. The conclusion is supported by both simulations and experiments. Advantages such as easy to process, low cost, large-area fabrication and design versatility of the metasurface make it a promising candidate to solve the indoor outdoor communication problem.Liu LiuHuiting ChangTao XuYanan SongChi ZhangZhi Hong HangXinhua HuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-7 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Liu Liu Huiting Chang Tao Xu Yanan Song Chi Zhang Zhi Hong Hang Xinhua Hu Achieving low-emissivity materials with high transmission for broadband radio-frequency signals
description	Abstract The use of low-emissivity (low-e) materials in modern buildings is an extremely efficient way to save energy. However, such materials are coated by metallic films, which can strongly block radio-frequency signals and prevent indoor-outdoor wireless communication. Here, we demonstrate that, when specially-designed metallic metasurfaces are covered on them, the low-e materials can remain low emissivity for thermal radiation and allow very high transmission for a broad band of radio-frequency signals. It is found that the application of air-connected metasurfaces with subwavelength periods is critical to the observed high transmission. Such effects disappear if periods are comparable to wavelengths or metal-connected structures are utilized. The conclusion is supported by both simulations and experiments. Advantages such as easy to process, low cost, large-area fabrication and design versatility of the metasurface make it a promising candidate to solve the indoor outdoor communication problem.
format	article
author	Liu Liu Huiting Chang Tao Xu Yanan Song Chi Zhang Zhi Hong Hang Xinhua Hu
author_facet	Liu Liu Huiting Chang Tao Xu Yanan Song Chi Zhang Zhi Hong Hang Xinhua Hu
author_sort	Liu Liu
title	Achieving low-emissivity materials with high transmission for broadband radio-frequency signals
title_short	Achieving low-emissivity materials with high transmission for broadband radio-frequency signals
title_full	Achieving low-emissivity materials with high transmission for broadband radio-frequency signals
title_fullStr	Achieving low-emissivity materials with high transmission for broadband radio-frequency signals
title_full_unstemmed	Achieving low-emissivity materials with high transmission for broadband radio-frequency signals
title_sort	achieving low-emissivity materials with high transmission for broadband radio-frequency signals
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/82e6534d6dcc48ca89051d64b6149a52
work_keys_str_mv	AT liuliu achievinglowemissivitymaterialswithhightransmissionforbroadbandradiofrequencysignals AT huitingchang achievinglowemissivitymaterialswithhightransmissionforbroadbandradiofrequencysignals AT taoxu achievinglowemissivitymaterialswithhightransmissionforbroadbandradiofrequencysignals AT yanansong achievinglowemissivitymaterialswithhightransmissionforbroadbandradiofrequencysignals AT chizhang achievinglowemissivitymaterialswithhightransmissionforbroadbandradiofrequencysignals AT zhihonghang achievinglowemissivitymaterialswithhightransmissionforbroadbandradiofrequencysignals AT xinhuahu achievinglowemissivitymaterialswithhightransmissionforbroadbandradiofrequencysignals
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Achieving low-emissivity materials with high transmission for broadband radio-frequency signals

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