Dynamically reconfigurable metasurfaces open up unprecedented opportunities in applications such as high capacity communications, dynamic beam shaping, hyperspectral imaging, and adaptive optics. The realization of high performance metasurface-based devices remains a great challenge due to very limited tuning ranges and modulation depths. Here we show that a widely tunable metasurface composed ...

In this study, we propose and investigate numerically a broadband THz metamaterial-based absorber, which is composed of superimposed graphene quantum dots. Based on idea, new way to engineering the absorption band introduced. We will show that using proposed it possible design absorber with given bandwidth. To capability consider three-layer structure, top layer disks. The middle lossless diele...

Perfect absorption based on metamaterials at terahertz frequencies range has attracted a great deal of interest in the field sensing, imaging, bolometers and stealth technology. This review is focused presenting several recently developed absorbers all-silicon metamaterials, such as single-band, dual-band, multi-band broadband absorbers. The partial physical mechanisms optical tunability corres...

Abstract An ultrathin Terahertz Triple-band ideal meta material absorber with a brand-new design that is straightforward has been presented. The suggested terahertz unit cell made up of two D-shaped resonators slots and ground metallic plane. These elements are separated from one another by polyimide dielectric substrate thickness 500 micrometers. construction presented provides three distinct ...