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Abstract A multi-band, graphene-based anisotropic metamaterial absorber designed to operate in the terahertz (THz) range features two circular split ring resonator arrays, each with two gaps and a connecting rod. This metamaterial is simulated using the frequency domain in CST Software. In addition, equivalent circuit models (ECMs) were derived to provide alternative approach to assess the characteristics of transverse electric (TE) and transverse magnetic (TM) modes using MATLAB code. The absorber is dynamically tunable, exhibiting a strong linear dichroism (LD) response of 98% within the 0.5–5.75 THz range. It achieves a single absorption peak with a 99.9% rate in TM mode and three absorption bands with an average rate of 97.1% in TE mode. This absorber has potential applications in THz polarization-sensitive devices and systems.
Asgari et al. (Mon,) studied this question.
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