https://www.selleckchem.com/pr....oducts/napabucasin.h
Broadband Terahertz (THz) absorbers are highly desired in detection, modulation, receiving and imaging devices. We report a design and successful implementation of a novel broadband THz metasurface with a near-perfect absorption. Different from the traditional metal/dielectric/metal three-layer structures, the as-designed THz absorber has one more metal layer and a dielectric spacer atop, both 200 nm thick. Although the total thickness increased by ~7%, the near-perfect THz absorption band significantly broadened 4 times, achieving