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

Starodubtsev, E. G.

doi:10.1051/epjam/2017014

Cited by 7 publications

(2 citation statements)

References 34 publications

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“…The considered features of the perforated multilayers are rather "stable" to variation of the parameters: for oblique incidence of the exciting wave (for TE or TM polarization, up to incidence angles of the order of c = p/6 Ä p/5 depending on the parameters values), possible presence of the layers magnetic properties and effective electromagnetic anisotropy of the substrate, the "non-idealness" of ENZ MM properties [47]. The modeling and graphical analysis results also point to the wide possibilities of dynamical control of the reflection characteristics of the considered systems.…”

Section: Resultsmentioning

confidence: 99%

Features of reflection of electromagnetic waves from nanometric perforated multilayers including epsilon-near-zero metamaterials

Starodubtsev

2019

EPJ Appl. Metamat.

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Using the exact solutions of electromagnetic boundary problems, analytical modeling of reflection of electromagnetic waves from nanometric perforated multilayers has been carried out. New features of operation of the multilayers including the substrate or layers of epsilon-near-zero (ENZ) materials are established. Presence of the ENZ main layer or substrate leads to the quickly changing and extreme values of phase and module of amplitude reflection coefficients depending on the system parameters. The ENZ (or metallic for the thicker systems) substrate has a significant impact on the transformation of phase difference of the reflected waves. The detailed numerical analysis of the obtained results for the multilayers including silver or phase change materials (germanium antimony tellurium alloy, vanadium dioxide) components is performed. The considered reflection characteristics are reasonably “stable” to variation of the system parameters such as oblique incidence of the exciting radiation (for TE or TM polarization), possible presence of magnetic properties of the layers and effective electromagnetic anisotropy of the substrate material. The obtained results can be used to develop ultra-thin (with significantly subwavelength thicknesses) transformers of phase and amplitude of reflected radiation, holograms, metasurfaces and other nanophotonics applications.

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Section: Resultsmentioning

confidence: 99%

Features of reflection of electromagnetic waves from nanometric perforated multilayers including epsilon-near-zero metamaterials

Starodubtsev

2019

EPJ Appl. Metamat.

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“…So, the conditions are possible when decreasing the whole system thickness down to significantly subwavelength values can lead to substantial increasing PSD of the transmitted waves. The investigated transmission features also take place when changing the system parameters such as possible presence of absorption (losses) of the nanoresonator components, anisotropy of the main layer materials, non-ideal realization of ENZ materials [41], oblique incidence of the exciting radiation (for small incidence angles).…”

Section: Discussionmentioning

confidence: 99%

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

Starodubtsev

2020

EPJ Appl. Metamat.

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Transmission of electromagnetic waves through nanometric multilayers (nanoresonators) including a main composite layer made of two alternating strips of low-absorbing dielectrics that is sandwiched between epsilon-near-zero (ENZ) or metallic spacer layers has been modeled. Analytical models are based on exact solutions of electromagnetic boundary problems. The spacers with the definite properties lead to extreme dependences of amplitude transmission coefficients on the system parameters and drastic increase in phase difference of the transmitted waves. These effects are most pronounced for subwavelength multilayer thicknesses due to multibeam interference features in the nanoresonator, and they can be amplified when the main layer and (or) the whole system thicknesses decrease. The investigated transmission features take place under variations of the system parameters such as anisotropy of the main layer materials, non-ideal realization of ENZ materials, oblique incidence of the exciting radiation (for small incidence angles). The obtained results can have applications in development of ultra-thin nanophotonics devices using phase transformation of transmitted waves.

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Effects of losses on the transmission and reflection of electromagnetic waves at the interface of metamaterial with zero real part of permittivity

Bukhanko

2023

Low Temperature Physics

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Electromagnetic wave refraction and reflection at the interface between vacuum and lossy metamaterial with zero real part of permittivity are analytically described by macroscopic classical electrodynamics. The analytical model is based on exact solutions of electromagnetic boundary problems. We have good reason to believe that in lossy metamaterial with zero real part of permittivity, the values of the magnetic field and energy flow are nonzero due to the crucial role of losses in epsilon-near-zero metamaterials. It is shown that the significant transmission of waves occurs for almost all incident angles. Moreover, the transmission coefficient increases with increasing loss for TE and TM wave polarizations. Numerical results are presented to show that the optical characteristics of waves at the interface of the metamaterial are highly sensitive to the losses and polarization of waves. The effect of the losses is most pronounced for transverse electric waves. The main contribution of this article is the characterization of the role of losses in the optical properties of epsilon-near-zero metamaterials that differs from some analogs known in the literature.

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

Cited by 7 publications

References 34 publications

Features of reflection of electromagnetic waves from nanometric perforated multilayers including epsilon-near-zero metamaterials

Features of reflection of electromagnetic waves from nanometric perforated multilayers including epsilon-near-zero metamaterials

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

Effects of losses on the transmission and reflection of electromagnetic waves at the interface of metamaterial with zero real part of permittivity

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