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Discrete sources method for investigation of near field enhancement of core-shell nanoparticles on a substrate accounting for spatial dispersion

Eremin, Yuri and Doicu, Adrian and Wriedt, Thomas (2021) Discrete sources method for investigation of near field enhancement of core-shell nanoparticles on a substrate accounting for spatial dispersion. Journal of Quantitative Spectroscopy & Radiative Transfer, 259, p. 107405. Elsevier. doi: 10.1016/j.jqsrt.2020.107405. ISSN 0022-4073.

Full text not available from this repository.

Official URL: https://www.sciencedirect.com/science/article/abs/pii/S0022407320305240

Abstract

Quantum nanoplasmonics attracts increasing interest of researchers since its innovations have great potential for practical applications. Over the past decades, the use of core-shell nanoparticles has gained huge popularity due to the ability to manipulate the materials and sizes of both core and shell to control their plasmonic properties. This circumstance favorably distinguishes them from its homogeneous counterparts. In this paper, based on the Discrete Sources Method, we investigate the effect of spatial nonlocality in a metal shell of a nonspherical core-shell nanoparticle deposited on a glass prism. Our primary goal is to examine the impact of the nonlocal effect on the near-field enhancement and the absorption cross section of the particle. We found that accounting for the interaction of a particle with a prism has a larger influence on the optical characteristics of the near field than on the intensity in the far zone. For excitation of the core-shell particle, both a propagating and an evanescent wave, have been considered. It was found that evanescent wave excitation provides a larger near field enhancement than an exciting propagating wave. Taking into account the nonlocality effect in the metal shell leads to a significant damping of the plasmon resonance amplitude accompanied by a small blue shift.

Item URL in elib:https://elib.dlr.de/138269/
Document Type:Article
Title:Discrete sources method for investigation of near field enhancement of core-shell nanoparticles on a substrate accounting for spatial dispersion
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Eremin, YuriLomonosov University MoscowUNSPECIFIED
Doicu, AdrianAdrian.Doicu (at) dlr.deUNSPECIFIED
Wriedt, ThomasUniversity of BremenUNSPECIFIED
Date:January 2021
Journal or Publication Title:Journal of Quantitative Spectroscopy & Radiative Transfer
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:259
DOI :10.1016/j.jqsrt.2020.107405
Page Range:p. 107405
Publisher:Elsevier
ISSN:0022-4073
Status:Published
Keywords:Discrete sources method. Core-shell particles on glass prism. Near field enhancement. Nonlocal dispersion. Generalized nonlocal optical response. Evanescent wave excitation
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):Vorhaben Spectroscopic Methods in Remote Sensing (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > Atmospheric Processors
Deposited By: Doicu, Adrian
Deposited On:25 Nov 2020 16:16
Last Modified:25 Nov 2020 16:16

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