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Telecommunications and Radio Engineering
SJR: 0.202 SNIP: 0.2 CiteScore™: 0.23

ISSN Imprimer: 0040-2508
ISSN En ligne: 1943-6009

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Telecommunications and Radio Engineering

DOI: 10.1615/TelecomRadEng.v75.i15.40
pages 1355-1367

PLASMON IMAGING USING THE UMOV - POYNTING VECTOR

E. A. Velichko
A. Usikov Institute of Radio Physics and Electronics, National Academy of Sciences of Ukraine, 12, Academician Proskura St., Kharkiv 61085
A. P. Nickolaenko
O.Ya. Usikov Institute for Radio Physics and Electronics, National Academy of Sciences of Ukraine 12, Academician Proskura St., Kharkiv 61085, Ukraine

RÉSUMÉ

The cylindrical sensors out of noble metals that exploit the plasmon surface resonance are widely used in the bio-medical research and environmental explorations, so that studying their characteristics in different wavelength bands is an actual task. We analyze the scattering of a plane H-polarized electromagnetic wave in the visible range of wavelengths by a silver nanocylinder with a concentric dielectric coating. The arising plasmon resonances are treated using both the conventional presentation of the spatial distribution of the field amplitude nearby the object and by the spatial distribution of the Umov-Poynting vector. We demonstrate that plasmon description by the Umov-Poynting vector has obvious advantages, as the standing and the traveling waves become clearly visible together with the boundaries of the object outlined in the spatial distribution. Unusual influence of the coating permittivity on the type of the plasmon resonance and the relevant spatial field distribution is illustrated when a decrease of the coating dielectric constant supports the quadruple hybrid resonance instead of the dipole plasmon resonance.


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