Graphene-Based Multiband Chiral Metamaterial Absorbers Comprised of Square Split-Ring Resonator Arrays With Different Numbers of Gaps, and Their Equivalent Circuit Model

The equivalent circuit model (ECM) is developed by using a MATLAB code to analyze graphene-based multi-band chiral metamaterial absorbers composing square split-ring resonator arrays in the terahertz (THz) range. are simulated numerically finite element method (FEM) CST Software verify ECM results. Our introduced can be used as suitable platforms polarization-sensitive devices and systems THz We have designed four tunable containing one, two, three, gaps their arms, respectively. absorber with one gap has absorption bands (two for TE three TM, band of both modes approximately overlaps) > 50%. two overlaps). (three overlap). They work 1-5.5 maximum linear dichroism (LD) responses 98, 99, 89, 77%, dynamically tunable. Additionally, 90° rotation incident electromagnetic fields, it possible switch between number and/or location making these promising candidate future systems. results following FEM ones. proposed procedure simple fast way recognize characteristics absorbers. could enablers