Open AccessMULTI-BAND PERFECT ABSORPTION INDUCED BY BREAKING THE SYMMETRY OF METAMATERIAL STRUCTURE
Author(s) -
Dinh Hoang Tiep,
Bùi Sơn Tùng,
Bui Xuan Nguyen,
Vũ Đình Lãm
Publication year - 2019
Publication title -
vietnam journal of science and technology/science and technology
Language(s) - English
Resource type - Journals
eISSN - 2815-5874
pISSN - 2525-2518
DOI - 10.15625/2525-2518/57/4/13784
Subject(s) - metamaterial , absorption (acoustics) , asymmetry , symmetry (geometry) , microwave , work (physics) , symmetry breaking , electronic band structure , absorption band , materials science , optics , physics , condensed matter physics , geometry , quantum mechanics , mathematics
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.