Terahertz (THz) absorbers for imaging, sensing, and detection are in high demand. However, such devices suffer from manufacturing costs limited absorption bandwidths. In this study, we presented a low-cost broadband tunable THz absorber based on one-step laser-induced graphene (LIG). The laser-machining-parameter-dependent morphology performance of the were investigated. Coarse tuning was reali...

We propose a sub-wavelength range-based dual-band tunable ideal terahertz metamaterial perfect absorber. The absorber structure consists of three main layers, with the layer consisting metal I-shaped structure. By simulating incident wave absorbance structure, we found that has more than 99% absorption peaks in both bands. In addition, have investigated relationship between structural and geome...

We propose an ultra-thin multiband terahertz metamaterial absorber, whose thickness is only 3.8 μm. Simulation results show that we can get four narrow absorption peaks with near-perfect in the 4.5 THz-6.0 THz frequency range. The resonance mechanism interpreted by electromagnetic field energy distributions at frequency. Moreover, also analyze sensing performances of absorber refractive index a...

A MoS2 and graphene stacked structure is proposed as metamaterials for a triple-band terahertz absorber in this work. The complementary frequency-selective surface of the absorber, consisting two crossed linear slots four pairs concentric circular slots, has three absorptions at 0.6 THz (99.7%), 1.5 (95.4%), 2.5 (99.5%). polarization less sensitive to incident angle within certain range. By con...

There are numerous applications for microwave absorbers in the L, S, C, X, and Ku bands. Creating a terahertz absorber, on other hand, has proven difficult. This paper presents metamaterial absorber operates at frequencies. It square shaped outer ring circle inner unit cell split resonator. The substrate is dielectric material ground metallic. According to simulation results, resonates two freq...