High spectral field enhancement and tunability in core-double shell metal-dielectric-metal spherical nanoparticles

In this work we have developed full Mie theory for spherical core-double shell NPs, considering the boundary conditions of the electric and magnetic fields at each interface, to study plasmon resonances, optical extinction and spectral field enhancement of a generalized metal-dielectric-metal NPs. K...

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Detalles Bibliográficos
Autores principales:	Mendoza Herrera, Luis Joaquín, Scaffardi, Lucía Beatriz, Schinca, Daniel Carlos
Formato:	Articulo Preprint
Lenguaje:	Inglés
Publicado:	2016
Materias:	Física Multiple core-shell nanoparticles Metal-dielectric-metal nanoparticles Plasmonic resonances
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/102219 https://ri.conicet.gov.ar/11336/49314 https://pubs.rsc.org/en/content/articlelanding/2016/ra/c6ra19349h#!divAbstract
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-102219
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Física Multiple core-shell nanoparticles Metal-dielectric-metal nanoparticles Plasmonic resonances
spellingShingle	Física Multiple core-shell nanoparticles Metal-dielectric-metal nanoparticles Plasmonic resonances Mendoza Herrera, Luis Joaquín Scaffardi, Lucía Beatriz Schinca, Daniel Carlos High spectral field enhancement and tunability in core-double shell metal-dielectric-metal spherical nanoparticles
topic_facet	Física Multiple core-shell nanoparticles Metal-dielectric-metal nanoparticles Plasmonic resonances
description	In this work we have developed full Mie theory for spherical core-double shell NPs, considering the boundary conditions of the electric and magnetic fields at each interface, to study plasmon resonances, optical extinction and spectral field enhancement of a generalized metal-dielectric-metal NPs. Keeping gold as the outer metal shell, calculations were carried out for different core metals (gold, silver, copper and aluminium) and different intermetallic dielectrics (silica, titanium dioxide, aluminium oxide and water). The metal dielectric function includes free and bound electron size corrections. Theoretical results show that the structures Al-SiO2-Au, Ag-SiO2-Au and Cu-SiO2-Au have field enhancement maxima factors of 33, 30 and 20 respectively in the outer region, all larger than that for Au-SiO2-Au (18). For the intermetallic region, field enhancement factors between 459, 960 and 841 are obtained for the first three structures mentioned before, respectively, also larger than that for Au-SiO2-Au (770). Spatial field enhancement was also calculated for both regions, for different core metals and fixed core-double shell size. A hybridization model specially developed for a core-double shell system allows an insightful interpretation of its plasmon resonances, field enhancement maxima and lack of symmetry in the outer region field distribution.
format	Articulo Preprint
author	Mendoza Herrera, Luis Joaquín Scaffardi, Lucía Beatriz Schinca, Daniel Carlos
author_facet	Mendoza Herrera, Luis Joaquín Scaffardi, Lucía Beatriz Schinca, Daniel Carlos
author_sort	Mendoza Herrera, Luis Joaquín
title	High spectral field enhancement and tunability in core-double shell metal-dielectric-metal spherical nanoparticles
title_short	High spectral field enhancement and tunability in core-double shell metal-dielectric-metal spherical nanoparticles
title_full	High spectral field enhancement and tunability in core-double shell metal-dielectric-metal spherical nanoparticles
title_fullStr	High spectral field enhancement and tunability in core-double shell metal-dielectric-metal spherical nanoparticles
title_full_unstemmed	High spectral field enhancement and tunability in core-double shell metal-dielectric-metal spherical nanoparticles
title_sort	high spectral field enhancement and tunability in core-double shell metal-dielectric-metal spherical nanoparticles
publishDate	2016
url	http://sedici.unlp.edu.ar/handle/10915/102219 https://ri.conicet.gov.ar/11336/49314 https://pubs.rsc.org/en/content/articlelanding/2016/ra/c6ra19349h#!divAbstract
work_keys_str_mv	AT mendozaherreraluisjoaquin highspectralfieldenhancementandtunabilityincoredoubleshellmetaldielectricmetalsphericalnanoparticles AT scaffardiluciabeatriz highspectralfieldenhancementandtunabilityincoredoubleshellmetaldielectricmetalsphericalnanoparticles AT schincadanielcarlos highspectralfieldenhancementandtunabilityincoredoubleshellmetaldielectricmetalsphericalnanoparticles
bdutipo_str	Repositorios
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High spectral field enhancement and tunability in core-double shell metal-dielectric-metal spherical nanoparticles

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