Polarizability and Light Scattering by Subwavelength Graded-Index Plasmonic Spheres

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Abstract

Light scattering by a subwavelength sphere exhibiting radially inhomogeneous permittivity is here presented. The theoretical foundations describing the scattering response are given in a simple manner and the concept of polarizability is generalized incorporating the inhomogeneity effects. Two illustrative examples are briefly discussed, i.e., a power-law and a Drude-like inhomogeneous profile, exposing the physical mechanisms of their scattering response. The presented results can open the path towards the implementation of graded-index subwavelength particles in modern nanoantenna applications.

Details

Original languageEnglish
Title of host publication2018 IEEE AP-S Symposium on Antennas and Propagation and URSI CNC/USNC Joint Meeting (AP-S/URSI 2018) Proceedings, July 8 - 13, 2018, Boston, Massachusetts, U.S.A.
Publication statusPublished - 2018
MoE publication typeA4 Article in a conference publication
EventIEEE International Symposium on Antennas and Propagation & USNC/URSI Radio Science Meeting - Boston, United States
Duration: 8 Jul 201813 Jul 2018

Publication series

NameDigest of the IEEE Antennas and Propagation Society International Symposium
ISSN (Print)1522-3965
ISSN (Electronic)1947-1491

Conference

ConferenceIEEE International Symposium on Antennas and Propagation & USNC/URSI Radio Science Meeting
CountryUnited States
CityBoston
Period08/07/201813/07/2018

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