Broadband Transparent Absorbing Metamaterial Based on Three-Dimensional Periodic Structure

Electromagnetic wave absorbing material refers to the material that can attenuate and absorb the incident electromagnetic wave energy, which is an important research direction from the intersection of two important fields of modern information communication and materials. In order to solve the application problem of wave absorbing materials in the scenarios with transparent requirements, wave absorbing materials need to have good visible light transparency characteristics. In this paper, a wideband transparent material with high absorptivity is proposed. A structure of square ring and absorbing resistance is used to realize the broadband high absorption rate. The transparent acrylic is used as the substrate and ITO is used to design the absorbing unit to realize the transparent structure of the absorber.