Multifunctional and dynamically tunable coherent perfect absorber based on InSb and graphene metasurface

Dual-band terahertz chiral metasurface absorber with enhanced circular dichroism based on temperature-tunable InSb for sensing applications

“…Thus, the Q -factors of the CMA are about 41.25 and 63.00 at frequencies of 1.65 THz and 1.89 THz, respectively, which are much greater than those obtained for previous general THz absorbers. 25–28,55–58 Therefore, these results further verify the high efficiency of dual-band CMA and provide theoretical support for its sensing application. It should be noticed that the absorption performance of the proposed CMA for the RCP wave will deteriorate significantly with the increase of the incident angle (>10°) due to the higher-order plasmon resonance (not shown).…”