350 rub
Journal Nanotechnology : the development , application - XXI Century №3 for 2013 г.
Article in number:
Electrodynamic analysis of nanoarrays
Keywords: disk nanoarrays optic range complex dielectric permittivity approximate boundary conditions method Galerkin method resonance
Authors:
A.M. Lerer, E.V. Golovacheva, I.N. Ivanova, I.A. Kazmin
Abstract:
Рroperties of two-dimension periodic multilayer gratings with disk-shaped reflectors are investigated. In optic range, a metal has properties of solid-state plasma and its permittivity has finite value. That is why it is necessary to take into account the presence of electric field inside metal. In case of a thin metal it is possible to avoid calculation of field inside metal layer by using the approach of approximate boundary conditions. Such approach is used in the present work. Boundary value problem of electromagnetic waves diffraction on disk reflectors is reduced to the pair integral equations of Fourier transform of current density on metal strips. After that, diagonalization of obtained pair integral equations is performed and Galerkin's method of integral equations solving with Bessel functions as bases is used. Internal convergence has been investigated. Comparison of results obtained by the suggested approach with rigorous method has been performed. It is shown that using the approach of approximate boundary conditions for thin layers is correct. Frequency response of nanoarrays is investigated. It is shown the there is resonant reflection from grating. It is pointed out that resonant wavelength depends on size of grating as well as thickness of layer and type of metal. Frequency response of arrays with close located reflectors in celsl has been investigated.
Pages: 43-48
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