Low-frequency metamaterial absorber with small-size unit cell based on corrugated surface
Author(s) -
Nan Wang,
Xiaochun Dong,
Weicheng Zhou,
Chuanwang He,
Wei Xiang Jiang,
Song Hu
Publication year - 2016
Publication title -
aip advances
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.421
H-Index - 58
ISSN - 2158-3226
DOI - 10.1063/1.4941933
Subject(s) - metamaterial , metamaterial absorber , materials science , optics , transverse plane , wavelength , absorption (acoustics) , plane wave , electromagnetic radiation , electric field , tunable metamaterials , optoelectronics , physics , quantum mechanics , engineering , structural engineering
In this paper, we report the design, analysis, and simulation of the low-frequency perfect metamaterial absorber (MMA) based on corrugated surface, which has very small unit-cell size. The proposed MMA consist of a regular square-array and a metallic background plane, separated by a corrugated surface with periodic square-pillar-array. Through the optimized design, the ratios between lattice constant and resonance wavelength for nearly-perfect and high absorption MMA are close to 1/15 and 1/21, respectively. To explain the absorption mechanism of suggested structures, the surface current and electromagnetic field distributions are given. Moreover, the absorption peaks remain high with large angles of incidence for both transverse electric and transverse magnetic polarizations, which provide more efficient absorptions for oblique incident electromagnetic wave
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