Design and Analysis of Metamaterial Electromagnetic Wave Absorbers at THz Frequency

Abstract

The subject of THz research and technology has advanced dramatically over the previous two decades. In the THz regime, a metamaterial-based absorber is in high demand. Metamaterials (MMs) can be employed as an effective medium by changing the shape to influence the electromagnetic characteristics. All incident radiations at a specific operational frequency are absorbed by a unity absorber, while transmissivity, reflectivity, scattering, and all other light propagation pathways are inhibited. The main focus of this study is on metamaterial-based perfect absorbers (MMPA) in the THz regime. This paper presents an MMPA with two metallic layers and a dielectric. The suggested MMPA is investigated utilising three different materials: gold, silver, and copper, with a comparison between them shown here