Title: Plasmonic resonances in the chain of spheroidal metallic nanoparticles on the dielectric substrate
Author(s):

	M. S. Maniuk (National University Zaporizhzhia Politechnic, 64 University Str., Zaporizhzhya 69063, Ukraine),
	A. V. Korotun (National University Zaporizhzhia Politechnic, 64 University Str., Zaporizhzhya 69063, Ukraine ; G.V. Kurdyumov Institute for Metal Physics of the NAS of Ukraine,36 Academician Vernadsky Blvd., Kyiv 03142, Ukraine),
	V. I. Reva (National University Zaporizhzhia Politechnic, 64 University Str., Zaporizhzhya 69063, Ukraine),
	I. M. Titov (National University Zaporizhzhia Politechnic, 64 University Str., Zaporizhzhya 69063, Ukraine)

The optical and plasmonic properties of the chains of prolate metallic spheroids of the dielectric substrate are studied in the work using the local field approximation. The case when spheroids are arranged in such a way that their major semi-axis belongs to the substrate plane are considered. The relations for the transverse component of the chain polarizability tensor and the frequency of the transverse chain resonance are obtained. The comparative analysis of the spectral shifts of the maximums of the imaginary part of the transverse chain polarizability and the polarizability of isolated prolate spheroid is performed. An influence of the variation of the material of particles in the chain and the dielectric environment on the location of the maximums of the imaginary part of the transverse polarizability is studied. The limits of the applicability of the theory proposed in the paper is established.

Key words: prolate metallic spheroids, chains of nanoparticles, dielectric substrate, chain polarizability tensor, plasmonic resonance, chain sums

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