Computational and Experimental Analysis of Gold Nanorods in Terms of Their Morphology: Spectral Absorption and Local Field Enhancement

A nanoparticle’s shape and size determine its optical properties. Nanorods are nanoparticles that have double absorption bands associated to surface plasmon oscillations along their two main axes. In this work, we analize the optical response of gold nanorods with numerical simulations and spectral...

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Detalles Bibliográficos
Autores: Núñez Leyva, Juan Manuel, Kolosovas Machuca, Eleazar Samuel, Sánchez, John Eder, Guevara, Edgar, Cuadrado Conde, Alexander, Alda, Javier, González, Francisco Javier
Tipo de recurso: artículo
Fecha de publicación:2021
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/8361
Acceso en línea:https://hdl.handle.net/20.500.14352/8361
Access Level:acceso abierto
Palabra clave:620.3
537.8
543.424.2
Computational electromagnetism
Gold nanorods
Raman spectroscopy
Electromagnetismo
Óptica (Física)
Partículas
2202 Electromagnetismo
2209.19 Óptica Física
2208 Nucleónica
id ES_47d1e839b4e09df35603d578ae7cb73e
oai_identifier_str oai:docta.ucm.es:20.500.14352/8361
network_acronym_str ES
network_name_str España
repository_id_str
spelling Computational and Experimental Analysis of Gold Nanorods in Terms of Their Morphology: Spectral Absorption and Local Field EnhancementNúñez Leyva, Juan ManuelKolosovas Machuca, Eleazar SamuelSánchez, John EderGuevara, EdgarCuadrado Conde, AlexanderAlda, JavierGonzález, Francisco Javier620.3537.8543.424.2Computational electromagnetismGold nanorodsRaman spectroscopyElectromagnetismoÓptica (Física)Partículas2202 Electromagnetismo2209.19 Óptica Física2208 NucleónicaA nanoparticle’s shape and size determine its optical properties. Nanorods are nanoparticles that have double absorption bands associated to surface plasmon oscillations along their two main axes. In this work, we analize the optical response of gold nanorods with numerical simulations and spectral absorption measurements to evaluate their local field enhancement—which is key for surface-enhanced Raman spectroscopic (SERS) applications. Our experimental results are in good agreement with finite element method (FEM) simulations for the spectral optical absorption of the nanoparticles. We also observed a strong dependence of the optical properties of gold nanorods on their geometrical dimension and shape. Our numerical simulations helped us reveal the importance of the nanorods’ morphology generated during the synthesis stage in the evaluation of absorption and local field enhancement. The application of these gold nanorods in surface-enhancement Raman spectroscopy is analyzed numerically, and results in a 5.8×104 amplification factor when comparing the values obtained for the nanorod deposited on a dielectric substrate compared to the nanorod immersed in water.MDPIUniversidad Complutense de Madrid20212021-06-2820212021-06-28journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/8361reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Atribución 3.0 Españahttps://creativecommons.org/licenses/by/3.0/es/info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/83612026-06-02T12:44:21Z
dc.title.none.fl_str_mv Computational and Experimental Analysis of Gold Nanorods in Terms of Their Morphology: Spectral Absorption and Local Field Enhancement
title Computational and Experimental Analysis of Gold Nanorods in Terms of Their Morphology: Spectral Absorption and Local Field Enhancement
spellingShingle Computational and Experimental Analysis of Gold Nanorods in Terms of Their Morphology: Spectral Absorption and Local Field Enhancement
Núñez Leyva, Juan Manuel
620.3
537.8
543.424.2
Computational electromagnetism
Gold nanorods
Raman spectroscopy
Electromagnetismo
Óptica (Física)
Partículas
2202 Electromagnetismo
2209.19 Óptica Física
2208 Nucleónica
title_short Computational and Experimental Analysis of Gold Nanorods in Terms of Their Morphology: Spectral Absorption and Local Field Enhancement
title_full Computational and Experimental Analysis of Gold Nanorods in Terms of Their Morphology: Spectral Absorption and Local Field Enhancement
title_fullStr Computational and Experimental Analysis of Gold Nanorods in Terms of Their Morphology: Spectral Absorption and Local Field Enhancement
title_full_unstemmed Computational and Experimental Analysis of Gold Nanorods in Terms of Their Morphology: Spectral Absorption and Local Field Enhancement
title_sort Computational and Experimental Analysis of Gold Nanorods in Terms of Their Morphology: Spectral Absorption and Local Field Enhancement
dc.creator.none.fl_str_mv Núñez Leyva, Juan Manuel
Kolosovas Machuca, Eleazar Samuel
Sánchez, John Eder
Guevara, Edgar
Cuadrado Conde, Alexander
Alda, Javier
González, Francisco Javier
author Núñez Leyva, Juan Manuel
author_facet Núñez Leyva, Juan Manuel
Kolosovas Machuca, Eleazar Samuel
Sánchez, John Eder
Guevara, Edgar
Cuadrado Conde, Alexander
Alda, Javier
González, Francisco Javier
author_role author
author2 Kolosovas Machuca, Eleazar Samuel
Sánchez, John Eder
Guevara, Edgar
Cuadrado Conde, Alexander
Alda, Javier
González, Francisco Javier
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 620.3
537.8
543.424.2
Computational electromagnetism
Gold nanorods
Raman spectroscopy
Electromagnetismo
Óptica (Física)
Partículas
2202 Electromagnetismo
2209.19 Óptica Física
2208 Nucleónica
topic 620.3
537.8
543.424.2
Computational electromagnetism
Gold nanorods
Raman spectroscopy
Electromagnetismo
Óptica (Física)
Partículas
2202 Electromagnetismo
2209.19 Óptica Física
2208 Nucleónica
description A nanoparticle’s shape and size determine its optical properties. Nanorods are nanoparticles that have double absorption bands associated to surface plasmon oscillations along their two main axes. In this work, we analize the optical response of gold nanorods with numerical simulations and spectral absorption measurements to evaluate their local field enhancement—which is key for surface-enhanced Raman spectroscopic (SERS) applications. Our experimental results are in good agreement with finite element method (FEM) simulations for the spectral optical absorption of the nanoparticles. We also observed a strong dependence of the optical properties of gold nanorods on their geometrical dimension and shape. Our numerical simulations helped us reveal the importance of the nanorods’ morphology generated during the synthesis stage in the evaluation of absorption and local field enhancement. The application of these gold nanorods in surface-enhancement Raman spectroscopy is analyzed numerically, and results in a 5.8×104 amplification factor when comparing the values obtained for the nanorod deposited on a dielectric substrate compared to the nanorod immersed in water.
publishDate 2021
dc.date.none.fl_str_mv 2021
2021-06-28
2021
2021-06-28
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/8361
url https://hdl.handle.net/20.500.14352/8361
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución 3.0 España
https://creativecommons.org/licenses/by/3.0/es/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución 3.0 España
https://creativecommons.org/licenses/by/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300724

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