Fig. 7

The variation in the different optical parameters (a) refractive index (n), (b) impedance (Z), (c) permittivity (ɛ) and (d) permeability (µ) for the Design M1 structure-based absorber structure.

The variation in the different optical parameters (a) refractive index (n), (b) impedance (Z), (c) permittivity (ɛ) and (d) permeability (µ) for the Design M1 structure-based absorber structure.