Publication

Abstract : This work analyzes the possibilities of graphene, indium antimonide (InSb), and cadmium telluride (CdTe) metasurface absorbers for terahertz (THz) applications. A possible method of regulating THz radiation, which is essential for many applications such as spectroscopy, imaging, and communication systems, is provided by metasurface absorbers. Because of their unique features, CdTe, InSb, and graphene are suitable options for metasurface absorbers in the THz range. High absorption coefficients and tunability are provided by CdTe, large THz absorption is shown by InSb, and ultra-wideband absorption and active modulation are offered by graphene. The results reveal important insights into the performance of the proposed metasurface absorbers in the range of 2-4 THz. The proposed metasurface’s optimum dimensions exhibits dual band effectiveness with absorptance exceeding 91%. The first band ranging between 2.59-2.70 THz displays absorptance 0.91 while the second band ranging between 2.83-2.96 THz shows the absorptance about 0.99 with an average tuning rate of 0.6 THz T−1.