Water-resonator-based metasurface : an ultrabroadband and near-unity absorption

Metasurface absorbing material, which obtains near-unity electromagnetic absorption through subwavelength artificial structure, plays an important role in the area of stealth and shielding technology, biological imaging, etc. However, they usually suffer from narrow bandwidth and only work on planar...

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Main Authors: Song, Qinghua, Zhang, Wu, Wu, Pin Chieh, Zhu, Weiming, Shen, Zhong Xiang, Chong, Peter Han Joo, Liang, Qing Xuan, Yang, Zhen Chuan, Hao, Yi Long, Cai, Hong, Zhou, Hai Feng, Gu, Yuandong, Lo, Guo-Qiang, Tsai, Din Ping, Bourouina, Tarik, Leprince-Wang, Yamin, Liu, Ai-Qun
Other Authors: School of Electrical and Electronic Engineering
Format: Article
Language:English
Published: 2020
Subjects:
Online Access:https://hdl.handle.net/10356/139087
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1390872020-05-15T06:06:21Z Water-resonator-based metasurface : an ultrabroadband and near-unity absorption Song, Qinghua Zhang, Wu Wu, Pin Chieh Zhu, Weiming Shen, Zhong Xiang Chong, Peter Han Joo Liang, Qing Xuan Yang, Zhen Chuan Hao, Yi Long Cai, Hong Zhou, Hai Feng Gu, Yuandong Lo, Guo-Qiang Tsai, Din Ping Bourouina, Tarik Leprince-Wang, Yamin Liu, Ai-Qun School of Electrical and Electronic Engineering Singapore Institute of Manufacturing Technology Engineering::Electrical and electronic engineering Absorber Metasurfaces Metasurface absorbing material, which obtains near-unity electromagnetic absorption through subwavelength artificial structure, plays an important role in the area of stealth and shielding technology, biological imaging, etc. However, they usually suffer from narrow bandwidth and only work on planar surfaces. Here, for the first time, this study demonstrates a soft water-resonator-based metasurface, which functions as an active absorbing material across an ultrabroadband range of Ku, K, and Ka bands. Distinct from conventional metallic metasurface, the water-resonator-based metasurface absorbs the microwave by dielectric magnetic resonance and periodic grating effect, which has a perfect absorptivity of ≈99% and an absorption bandwidth (absorptivity higher than 90%) that covers 78.9% of the central frequency. Furthermore, near-unity absorption is maintained when the soft metasurface material is bent into different curvatures, promising high potential applications for antennas in reducing side lobe radiation, eliminating wall reflection in anechoic chambers, antiradar detection, and stealth. NRF (Natl Research Foundation, S’pore) MOE (Min. of Education, S’pore) EDB (Economic Devt. Board, S’pore) Accepted version 2020-05-15T05:56:23Z 2020-05-15T05:56:23Z 2017 Journal Article Song, Q., Zhang, W., Wu, P. C., Zhu, W., Shen, Z. X., Chong, P. H. J., . . . Liu, A.-Q. (2017). Water-resonator-based metasurface : an ultrabroadband and near-unity absorption. Advanced Optical Materials, 5(8), 1601103-. doi:10.1002/adom.201601103 2195-1071 https://hdl.handle.net/10356/139087 10.1002/adom.201601103 2-s2.0-85016024246 8 5 1601103 en NRF-CRP132014-01 NRF2014SAS-SRP001-059 Advanced Optical Materials This is the peer reviewed version of the following article: Song, Q., Zhang, W., Wu, P. C., Zhu, W., Shen, Z. X., Chong, P. H. J., . . . Liu, A.-Q. (2017). Water-resonator-based metasurface : an ultrabroadband and near-unity absorption. Advanced Optical Materials, 5(8), 1601103-. doi:10.1002/adom.201601103, which has been published in final form at 10.1002/adom.201601103. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. application/pdf
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic Engineering::Electrical and electronic engineering
Absorber
Metasurfaces
spellingShingle Engineering::Electrical and electronic engineering
Absorber
Metasurfaces
Song, Qinghua
Zhang, Wu
Wu, Pin Chieh
Zhu, Weiming
Shen, Zhong Xiang
Chong, Peter Han Joo
Liang, Qing Xuan
Yang, Zhen Chuan
Hao, Yi Long
Cai, Hong
Zhou, Hai Feng
Gu, Yuandong
Lo, Guo-Qiang
Tsai, Din Ping
Bourouina, Tarik
Leprince-Wang, Yamin
Liu, Ai-Qun
Water-resonator-based metasurface : an ultrabroadband and near-unity absorption
description Metasurface absorbing material, which obtains near-unity electromagnetic absorption through subwavelength artificial structure, plays an important role in the area of stealth and shielding technology, biological imaging, etc. However, they usually suffer from narrow bandwidth and only work on planar surfaces. Here, for the first time, this study demonstrates a soft water-resonator-based metasurface, which functions as an active absorbing material across an ultrabroadband range of Ku, K, and Ka bands. Distinct from conventional metallic metasurface, the water-resonator-based metasurface absorbs the microwave by dielectric magnetic resonance and periodic grating effect, which has a perfect absorptivity of ≈99% and an absorption bandwidth (absorptivity higher than 90%) that covers 78.9% of the central frequency. Furthermore, near-unity absorption is maintained when the soft metasurface material is bent into different curvatures, promising high potential applications for antennas in reducing side lobe radiation, eliminating wall reflection in anechoic chambers, antiradar detection, and stealth.
author2 School of Electrical and Electronic Engineering
author_facet School of Electrical and Electronic Engineering
Song, Qinghua
Zhang, Wu
Wu, Pin Chieh
Zhu, Weiming
Shen, Zhong Xiang
Chong, Peter Han Joo
Liang, Qing Xuan
Yang, Zhen Chuan
Hao, Yi Long
Cai, Hong
Zhou, Hai Feng
Gu, Yuandong
Lo, Guo-Qiang
Tsai, Din Ping
Bourouina, Tarik
Leprince-Wang, Yamin
Liu, Ai-Qun
format Article
author Song, Qinghua
Zhang, Wu
Wu, Pin Chieh
Zhu, Weiming
Shen, Zhong Xiang
Chong, Peter Han Joo
Liang, Qing Xuan
Yang, Zhen Chuan
Hao, Yi Long
Cai, Hong
Zhou, Hai Feng
Gu, Yuandong
Lo, Guo-Qiang
Tsai, Din Ping
Bourouina, Tarik
Leprince-Wang, Yamin
Liu, Ai-Qun
author_sort Song, Qinghua
title Water-resonator-based metasurface : an ultrabroadband and near-unity absorption
title_short Water-resonator-based metasurface : an ultrabroadband and near-unity absorption
title_full Water-resonator-based metasurface : an ultrabroadband and near-unity absorption
title_fullStr Water-resonator-based metasurface : an ultrabroadband and near-unity absorption
title_full_unstemmed Water-resonator-based metasurface : an ultrabroadband and near-unity absorption
title_sort water-resonator-based metasurface : an ultrabroadband and near-unity absorption
publishDate 2020
url https://hdl.handle.net/10356/139087
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