Figure 15
From: Optimizing an electromagnetic wave absorber for bi-anisotropic metasurfaces based on toroidal modes

(a) The real values of the reflection coefficient and transmission coefficient of the structure embedded with a unit amplification factor and a rotation angle of \(30^\circ\) . (b) The scattering parameter in the second frequency region with a unit amplification factor and a rotation angle of \(30^\circ\).