Water metamaterial for ultra-broadband and wide-angle absorption

Water metamaterial for ultra-broadband and wide-angle absorption

A subwavelength water metamaterial is proposed and analyzed for ultra-broadband perfect absorption at microwave frequencies. We experimentally demonstrate that this metamaterial shows over 90% absorption within almost the entire frequency band of 12-29.6 GHz. It is also shown that the proposed metam...

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Veröffentlicht in:Optics express 2018-02, Vol.26 (4), p.5052-5059
Hauptverfasser: Xie, Jianwen, Zhu, Weiren, Rukhlenko, Ivan D, Xiao, Fajun, He, Chong, Geng, Junping, Liang, Xianling, Jin, Ronghong, Premaratne, Malin
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container_end_page 5059
container_issue 4
container_start_page 5052
container_title Optics express
container_volume 26
creator Xie, Jianwen
Zhu, Weiren
Rukhlenko, Ivan D
Xiao, Fajun
He, Chong
Geng, Junping
Liang, Xianling
Jin, Ronghong
Premaratne, Malin
description A subwavelength water metamaterial is proposed and analyzed for ultra-broadband perfect absorption at microwave frequencies. We experimentally demonstrate that this metamaterial shows over 90% absorption within almost the entire frequency band of 12-29.6 GHz. It is also shown that the proposed metamaterial exhibits a good thermal stability with its absorption performance almost unchanged for the temperature range from 0 to 100°C. The study of the angular tolerance of the metamaterial absorber shows its ability of working at wide angles of incidence. Given that the proposed water metamaterial absorber is low-cost and easy for manufacture, we envision it may find numerous applications in electromagnetics such as broadband scattering reduction and electromagnetic energy harvesting.
doi_str_mv 10.1364/oe.26.005052
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title Water metamaterial for ultra-broadband and wide-angle absorption
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