Water metamaterial for ultra-broadband and wide-angle absorption

Jianwen Xie, Weiren Zhu, Ivan D. Rukhlenko, Fajun Xiao, Chong He, Junping Geng, Xianling Liang, Ronghong Jin, Malin Premaratne

Research output: Contribution to journalArticleResearchpeer-review

85 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)5052-5059
Number of pages8
JournalOptics Express
Issue number4
Publication statusPublished - 19 Feb 2018

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