In this article, a broadband metamaterial absorber suitable for the S, C, and X bands is designed manufactured. The made of FR-4 substrate, resonant metal structure, lumped resistance, backplate, has unit size 0.11λ L , total thickness 0.084λ . absorption principle analyzed using equivalent medi...

A millimeter-sized artificial periodic structure material is successfully simulated, showing the characteristics of a thin geometric scale, broadband response, and high wave absorption. The structural units are stacked with metal circles, notched circular rings, dielectric material. design similar to quasi-two-dimensional planar maintains while reducing number layers in stack. In addition, elec...

Electromagnetic metamaterials are artificial subwavelength composites with periodic structures, which can interact strongly the incident light to achieve effective control of field. Metamaterial absorbers nearly 100% perfect absorption at a specific frequency, so they widely used in sensors, optical switches, communication, and other fields. Based on development history metamaterials, this pape...

Abstract Controlling electromagnetic waves on the material is needed by several applications such as sensors, stealth technology, and energy harvesting. An artificial that could control called metamaterial. Meanwhile, a metamaterial absorber can absorb wave. Two concepts be used to explain absorbing phenomena absorber: matching impedance of air part imaginary high index refractive collectively ...

We numerically investigate the influence of roughness in layer thicknesses on the properties of hyperbolic metamaterials (HMMs). We show that random spatial variation of dielectric and metal layer thicknesses, similar to what occurs during actual structure fabrication, leads to dramatic absorption increase compared to an ideal, smooth-layer HMM; the absorption increases more strongly when rough...

We use indium tin oxide (ITO), one of the representative resistive materials, for implementation a metamaterial electromagnetic (EM) absorber with high absorbance in wide frequency range. Highly symmetrical split ring resonators made ITO film are deposited on polyethylene terephthalate transparent and flexible features, such configuration causes proposed to be insensitive polarization incidence...