Open AccessConductive polymer for ultra-broadband, wide-angle, and polarization-insensitive metamaterial perfect absorber
Author(s) -
Le Dinh Hai,
Vu Dinh Qui,
Nguyen Hoang Tung,
Tran Van Huynh,
Nguyễn Tiến Dũng,
Nguyễn Thanh Bình,
Le Dac Tuyen,
Vũ Đình Lãm
Publication year - 2018
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.26.033253
Subject(s) - materials science , metamaterial , optics , broadband , molar absorptivity , metamaterial absorber , polarization (electrochemistry) , conductivity , optoelectronics , electric field , electrical conductor , extinction ratio , physics , composite material , wavelength , tunable metamaterials , chemistry , quantum mechanics
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.