Characteristic properties of electromagnetic wave interaction with uniaxial absorbing metamaterials: A case of the near-zero axial parameter

Features of transmission of electromagnetic waves through composite nanoresonators including epsilon-near-zero metamaterials

“…In the recent papers [13,14], new possibilities to develop ultra-thin transformers of reflected waves phase differences and binary holograms on the basis of perforated multilayers including epsilon-near-zero (ENZ) MMs were revealed and investigated analytically. ENZ MMs are characterized by small values of the real and imaginary parts of permittivity, and these materials are promising for many optics applications [15][16][17][18][19][20][21]. In particular, ENZ components allowed implementation of new operation regimes of nanoresonators: all-optical dynamic control of transmittance [22], hybridization of ENZ modes in double nanocavities [23], engineering of ENZ resonances in metalinsulator-metal nanocavities [24].…”

Effect of small anisotropy and absorption on metamaterial applications: “non-ideal” features of propagation and tunneling of electromagnetic waves

“…Moreover, the account of interconnected effects of absorption (losses) and anisotropy on propagation and attenuation of electromagnetic waves is also important for the MM applications. Such investigations were performed in many works only for some specific cases and concrete MM realizations (see, e.g., [25][26][27][28][29][30]). However, it is interesting to carry out the general comparative analysis of the "non-ideal" (from viewpoint of MM applications) features of electromagnetic wave propagation and tunneling for various absorbing MM: isotropic, uniaxial (at arbitrary orientations of the optical axis), and biaxial (at least, for the biaxial MM with most symmetric electromagnetic properties).…”