A simple water-based broadband metamaterial absorber has been proposed for the terahertz region. The absorption bandwidth is extended based on large frequency dispersive permittivity and high relative dielectric loss of water. simulated result indicates that structure achieves over 90% in range from 0.6 to 10 THz at a normal incident angle. Moreover, performance maintains 80% with wide angle up...

Terahertz (THz) absorbers are highly desirable in sensing and detection devices. Herein, we have proposed a 3D dual-band near-perfect absorber that works the THz regime for applications. The theoretical calculation shows absorption efficiency of can reach 99.0 97.0% at 1.125 1.626 THz, respectively. Double peaks be tuned independently by alternating geometric parameters unit resonators. underly...