Broadband terahertz metamaterial absorber formed by four different-shaped metallic strips and a dielectric layer on top a metallic ground plane is theoretically demonstrated. The combination of the four metallic strips structure gives rise to an absorption bandwidth of 0.63 THz with absorption >80%. ...
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 absorbe...
A tunable broadband metamaterial absorber is proposed based on the vanadium dioxide and Fabry-Perot cavity in the terahertz region. To broaden the absorption bandwidth, the dielectric coating is employed on the top of vanadium dioxide squares to form the Fabry-Perot cavity for improving the impedance...
Metamaterial Ultra-broadeband Terahertz absorber Flexible wave-absorbing material Introduction The study of metamaterials originated at Veselago [1]. By artificial structural designs, Metamaterials exhibit many exotic optical properties. For instance: Negative refraction index [2]. Inverse Doppler effect [3...
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...
Broadband terahertz metamaterial absorbers have attracted considerable attention due to their significant potential for practical applications. These absorbers are usually stacked in several differently shaped or sized subunits to form a unit cell, making their fabrication quite troublesome. A simple design ...
Broadband terahertz metamaterial absorber based on sectional asymmetric structures. Sci. Rep. 6, 32466 (2016). Article ADS CAS PubMed PubMed Central Google Scholar Bui, S. T. et al. Polarization-independent, wide-incident-angle and dual-band perfect absorption, based on near-field coupling in...
L. Wang, “Design of a Four-Band and Polarization-Insensitive Terahertz Metamaterial Absorber,” IEEE Photon. J., vol. 7, no. 1, pp. 1–8, 2015.10.1109/JPHOT.2014.2381633Search in Google Scholar [13] Y.-C. Song, J. Ding, C.-J. Guo, Y.-H. Ren, and J.-K. Zhang, “Ultra-...
Another absorber constructed with periodic gallium arsenide grating on tungsten film has exhibited more than 90% absorption with wavelengths larger than 1300 nm [18]. In contrast, a six-band terahertz metamaterial absorber has been designed on an InSb substrate with a cross-cave metallic resonator ...
Ultra-broadband terahertz metamaterial absorber. Appl. Phys. Lett. 105, 021102 (2014). Article ADS Google Scholar Søndergaard, T. et al. Plasmonic black gold by adiabatic nanofocusing and absorption of light in ultra-sharp convex grooves. Nat. Commun. 3, 969 (2012). Article ADS Google ...