Journal
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
Volume 18, Issue 3, Pages 536-540Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LAWP.2019.2896166
Keywords
Metamaterial absorber; truly all-dielectric; water-based
Funding
- National Natural Science Foundation of China [61701303, 61675170, 61571289, 61571298]
- Natural Science Foundation of Shanghai [17ZR1414300]
- Shanghai Pujiang Program [17PJ1404100]
- Natural Science Basic Research Plan in Shaanxi Province [2017JM6022]
- Ministry of Education and Science of the Russian Federation (Minobrnauka) [14, Y26.31.0028, 16.8981.2017/8.9]
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A truly all-dielectric metamaterial absorber, made of subwavelength water-based resonators and free of metallic ground, is designed, fabricated, and characterized. We demonstrate theoretically and experimentally that our metamaterial features a highly uniform perfect absorption for frequencies between 7.74 and 23.56 GHz, perfect thermal stability for temperatures from 0 to 100 degrees C, and excellent absorption performance for large angles of oblique incidence. The proposed metamaterial absorber can be fabricated at low cost, is environment friendly, and may find potential applications in broadband scattering reduction and electromagnetic energy harvesting.
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