Artificial Materials for Effective Electromagnetic Wave Absorption
A gradient 3-dimensional (3D) honeycomb metamaterial structure is fabricated, and its structure parameters were optimized and fabricated by using 3D printing technology. Nanocomposites with carbon nanotubes and magnetic nanoparticles have been prepared and coated on the gradient 3D structure. The titled angle has a dramatic effect on the RL and the reduced mismatch between air and 3D meta-absorber should account for the enhanced performance. The gradient 3D meta-absorber has features of high performance and lightweight, which could find applications in many fields, especially in aerospace and military application where lightweight materials are preferred.
