Constitutive parameters Energy gap 8 Dispersion (waves) 6 Metamaterials 6 Photonic crystals 6 3D photonic crystals 4 Band gaps 4 Dispersion equations 4 Dispersion relations 4 Homogeneous media 4 Host mediums 4 Imaginary parts 4 Korringa-kohn-rostoker 4 Negative index 4 Numerical code 4 Permittivity 4 Refractive index 4 Spectral position 4 Spheres 4 Three dimensional 4 Wave calculations 4 Analytical expressions 2 Attenuated total reflections 2 Dielectric-magnetic material 2 Dispersion models 2 Dispersive behaviors 2 Eigen modes 2 Electromagnetic response 2 Electromagnetic wave polarization 2 Electromagnetic wave reflection 2