Design of metamaterial perfect absorbers in the long-wave infrared region

Abstract

A narrow-band and an ultra-broadband absorber are proposed in the long infrared band. They are based on impedance matching theory. The absorption bandwidth of the narrowband absorber is 4.8 μm and that of the ultra-broadband absorber is up to 10 μm.

Design and performance analysis of a mid-infrared broadband thermally tunable metamaterial absorption device based on the phase-change effect

“…The table also displays the different designs and materials used in each work. 62–67 It is evident that the absorption device designed in this study has significant advantages over previous works in terms of high absorption bandwidth and average absorption rate. Moreover, the proposed design features a simple three-layer structure, making it easy to manufacture and reducing production costs.…”