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Conductive polymer for ultra-broadband, wide-angle, and polarization-insensitive metamaterial perfect absorber. 2018

Le Dinh Hai, and Vu Dinh Qui, and Nguyen Hoang Tung, and Tran Van Huynh, and Nguyen Dinh Dung, and Nguyen Thanh Binh, and Le Dac Tuyen, and Vu Dinh Lam

We numerically and experimentally investigate a broadband, polarization-independent and wide-incident-angle metamaterial perfect absorber (MPA) based on conductive polymer. By optimizing the electrical conductivity of the polymer, a 16.7 GHz broadband MPA is observed with the absorptivity greater than 80% for both transverse magnetic and electric polarization. The measurement results performed in the range 8-18 GHz show a diametrical concatenation with simulation results and theoretical analysis. The absorption mechanism is explained by demonstrating the influence of polymer conductivity on the dissipated power, the equivalent impedance, and the induced electric field. Our work may contribute to further studies on broadband MPA using for various applications.

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