A perfect ultra-narrow band infrared metamaterial absorber based on the all-metal-grating structure is proposed. The absorber presents a perfect absorption efficiency of over 98% with an ultra-narrow bandwidth of 0.66 nm at normal incidence. This high efficient absorption is contributed to the surface plasmon resonance. Moreover, the surface plasmon resonance-induced strong surface electric fie...

We suggest and demonstrate the concept and design of sectional asymmetric structures which can manipulate the metamaterial absorber's working bandwidth with maintaining the other inherent advantages. As an example, a broadband terahertz perfect absorber is designed to confirm its effectiveness. The absorber's each cell integrates four sectional asymmetric rings, and the entire structure compose...

671 wileyonlinelibrary.com C O M M U N IC A IO N these designs have generated much improvement toward the goal of stable and selective thermal emission, they typically possess shortcomings that can include material delamination, corrosion/oxidation, surface diffusion, and nonideal spectral/ angular emission profi les. Additionally, many of these designs require nanoscale fabrication techniques ...

This paper investigates the impact of finite number unit cells on sensing performance chosen THz metamaterial absorber. Sensor models with different varying from 16 to infinite have been created using WIPL-D software. The results comparison show that as sensor?s size increases, its absorption response becomes more similar one an sensor structure. Metamaterial absorber 50 expresses behavior in t...

This paper reports on a numerical study of the six-band metamaterial absorber composed of two alternating stack of metallic-dielectric layers on top of a continuous metallic plane. Six obvious resonance peaks with high absorption performance (average larger than 99.37%) are realized. The first, third, fifth, and the second, fourth, sixth resonance absorption bands are attributed to the multiple...