Open AccessWater metamaterial for ultra-broadband and wide-angle absorption
Author(s) -
Jianwen Xie,
Weiren Zhu,
Ivan D. Rukhlenko,
Fajun Xiao,
Chong He,
Junping Geng,
Xianling Liang,
Ronghong Jin,
Malin Premaratne
Publication year - 2018
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.26.005052
Subject(s) - metamaterial , metamaterial absorber , optics , materials science , broadband , microwave , absorption (acoustics) , optoelectronics , electromagnetic radiation , electromagnetics , scattering , transformation optics , tunable metamaterials , physics , telecommunications , engineering physics , computer science
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.