Structural design and optimization of double-cross shape broadband absorption metamaterial based on CB-ABS

Abstract

This work presents a novel broadband double-cross shape metamaterial structure based on the Carbon Black-Acrylonitrile-Butadiene-Styrene (CB-ABS) composite material. The optimal metamaterial structure with the thickness of 7 mm shows a broadband absorption characteristic in the frequency range of 5.1–40 GHz. Additionally, the low volume filling fraction of the proposed metamaterial structure will be helpful to achieve lightweight broadband absorption performance. Meanwhile, the metamaterial structure can also display a wide-angle absorption performance from 0° to 55° for TE mode and 0°–75° for TM mode. Moreover, this research provides an effective and promising way for the practical application of the lightweight broadband and wide-angle microwave strong absorption metamaterial in the future.

Broadband carbon-based all-dielectric metamaterial absorber enhanced by high-contrast gratings based spoof surface plasmon polaritons

“…With the advantages of simple structures, corrosion resistance and isotropy over traditional metal-based metamaterials, they have attracted much attention from various fields including EM absorption. Up to now, many different kinds of all-dielectric metamaterial absorbers (ADMMAs) have been proposed [14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32]. ADMMAs are usually constructed by dielectric elements with high permittivity that can excite obvious Mie resonances.…”

“…In addition, different kinds of carbon series materials with different concentrations in composites can provide abundant permittivity data, which can greatly increase the freedom of design. Hence, a variety of carbon-based broadband ADMMAs have been designed [26][27][28][29][30][31][32]. However, the essence of these designs is just changing the combination of materials and structures actually and there is a lack of specialized exploration of absorption mechanisms.…”