MULTI-BAND PERFECT ABSORPTION INDUCED BY BREAKING THE SYMMETRY OF METAMATERIAL STRUCTURE

Dinh Hoang Tiep, Bui Son Tung, Bui Xuan Nguyen, Vu Dinh Lam

Abstract


In this work, a multi-band metamaterial perfect absorber is demonstrated numerically and experimentally in the microwave region based on the breaking symmetry of geometrical structure. Initially, when the structure, which is designed in the X shape, is in the symmetric geometry, only one absorption peak is observed. By breaking the symmetry of structure, new absorption peaks emerge, leading to the multi-band perfect absorption. In addition, the separations of absorption peaks are proportional to the degree of geometrical asymmetry. Our work presents a simple and efficient approach to create multi-band metamaterial perfect absorbers.

Keywords


metamaterial; perfect absorption; multi-band

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DOI: https://doi.org/10.15625/2525-2518/57/4/13784 Display counter: Abstract : 143 views. PDF : 29 views.

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Published by Vietnam Academy of Science and Technology