Properties of Hybridized Modes in Core-Shell Scatterers

Ari Sihvola; Dimitrios C. Tzarouchis; Pasi Yla-Oijala; Henrik Wallen

doi:10.23919/URSI-AT-RASC.2018.8471610

Properties of Hybridized Modes in Core-Shell Scatterers

Ari Sihvola, Dimitrios C. Tzarouchis, Pasi Yla-Oijala, Henrik Wallen

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review

1 Citation (Scopus)

135 Downloads (Pure)

Abstract

The character of resonances in plasmonic core-shell structures is analyzed. In particular, the focus is on the behavior of the weaker (antibonding) resonance. Using the residue expansion of the polarizability, it is shown that to maximize the effect of the antibonding resonance, the ratio of the core radius to the whole sphere radius should be 0.596. The polarizability-based results are compared with full Mie scattering calculations showing fair agreement up to size parameters x=1/3.

Original language	English
Title of host publication	2018 2nd URSI Atlantic Radio Science Meeting, AT-RASC 2018
Publisher	IEEE
ISBN (Electronic)	9789082598735
DOIs	https://doi.org/10.23919/URSI-AT-RASC.2018.8471610
Publication status	Published - 24 Sep 2018
MoE publication type	A4 Article in a conference publication
Event	URSI Atlantic Radio Science Meeting - Gran Canaria, Spain Duration: 28 May 2018 → 1 Jun 2018 Conference number: 2

Conference

Conference	URSI Atlantic Radio Science Meeting
Abbreviated title	AT-RASC
Country	Spain
City	Gran Canaria
Period	28/05/2018 → 01/06/2018

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10.23919/URSI-AT-RASC.2018.8471610

ELEC-sihvola-et-al-properties-of-hybridized-URSIAccepted author manuscript, 280 KB

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title = "Properties of Hybridized Modes in Core-Shell Scatterers",

abstract = "The character of resonances in plasmonic core-shell structures is analyzed. In particular, the focus is on the behavior of the weaker (antibonding) resonance. Using the residue expansion of the polarizability, it is shown that to maximize the effect of the antibonding resonance, the ratio of the core radius to the whole sphere radius should be 0.596. The polarizability-based results are compared with full Mie scattering calculations showing fair agreement up to size parameters x=1/3.",

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AB - The character of resonances in plasmonic core-shell structures is analyzed. In particular, the focus is on the behavior of the weaker (antibonding) resonance. Using the residue expansion of the polarizability, it is shown that to maximize the effect of the antibonding resonance, the ratio of the core radius to the whole sphere radius should be 0.596. The polarizability-based results are compared with full Mie scattering calculations showing fair agreement up to size parameters x=1/3.

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