Synergetic Light-Harvesting and Near-Field Enhancement in Multiscale Patterned Gold Substrates
- Autores
- Hernandez, Luis Alfonso Guerra; Millone, María Antonieta Daza; Cortés, Emiliano; Castez, Marcos Federico; Auguié, Baptiste; Vela, María Elena; Salvarezza, Roberto Carlos; Fainstein, Alejandro
- Año de publicación
- 2015
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Sphere-segment void (SSV) cavities have emerged as promising substrates for reproducible Surface Enhanced Raman Scattering (SERS), offering strong and uniform electromagnetic enhancement associated with the excitation of cavity-like localized surface plasmon resonances tunable across the UV–vis-near IR range, with a facile large-scale fabrication process. High-resolution electron micrographs of these structures reveal a considerable departure from the idealized smooth spherical cavity shape; notably, the electrochemical deposition of gold yields an important surface roughness. We investigate this contribution to the SERS activity of SSV substrates with a series of experiments, varying the degree of surface roughness using thermal annealing and gradual electrochemical roughening. Notably, we observe that both roughness features and cavity-like modes operate in conjunction as a multiscale antenna to provide larger SERS efficiency than the two mechanisms considered separately. We conclude that the main role of the ordered cavity structure is to increase the plasmonic mode density near rough surface features, thus optimizing the coupling of far-field radiation (light harvesting) to locally enhanced near fields.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas - Materia
-
Química
Física
Ciencias Exactas
Plasmonic substrates
Sphere-segment void arrays
Roughness
Multiscale antennas
Surface Enhanced Raman Spectroscopies
Sensing - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by/4.0/
- Repositorio
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/140853
Ver los metadatos del registro completo
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Synergetic Light-Harvesting and Near-Field Enhancement in Multiscale Patterned Gold SubstratesHernandez, Luis Alfonso GuerraMillone, María Antonieta DazaCortés, EmilianoCastez, Marcos FedericoAuguié, BaptisteVela, María ElenaSalvarezza, Roberto CarlosFainstein, AlejandroQuímicaFísicaCiencias ExactasPlasmonic substratesSphere-segment void arraysRoughnessMultiscale antennasSurface Enhanced Raman SpectroscopiesSensingSphere-segment void (SSV) cavities have emerged as promising substrates for reproducible Surface Enhanced Raman Scattering (SERS), offering strong and uniform electromagnetic enhancement associated with the excitation of cavity-like localized surface plasmon resonances tunable across the UV–vis-near IR range, with a facile large-scale fabrication process. High-resolution electron micrographs of these structures reveal a considerable departure from the idealized smooth spherical cavity shape; notably, the electrochemical deposition of gold yields an important surface roughness. We investigate this contribution to the SERS activity of SSV substrates with a series of experiments, varying the degree of surface roughness using thermal annealing and gradual electrochemical roughening. Notably, we observe that both roughness features and cavity-like modes operate in conjunction as a multiscale antenna to provide larger SERS efficiency than the two mechanisms considered separately. We conclude that the main role of the ordered cavity structure is to increase the plasmonic mode density near rough surface features, thus optimizing the coupling of far-field radiation (light harvesting) to locally enhanced near fields.Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas2015-08-25info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf1355-1365http://sedici.unlp.edu.ar/handle/10915/140853enginfo:eu-repo/semantics/altIdentifier/issn/2330-4022info:eu-repo/semantics/altIdentifier/doi/10.1021/acsphotonics.5b00345info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:32:06Zoai:sedici.unlp.edu.ar:10915/140853Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:32:07.269SEDICI (UNLP) - Universidad Nacional de La Platafalse |
dc.title.none.fl_str_mv |
Synergetic Light-Harvesting and Near-Field Enhancement in Multiscale Patterned Gold Substrates |
title |
Synergetic Light-Harvesting and Near-Field Enhancement in Multiscale Patterned Gold Substrates |
spellingShingle |
Synergetic Light-Harvesting and Near-Field Enhancement in Multiscale Patterned Gold Substrates Hernandez, Luis Alfonso Guerra Química Física Ciencias Exactas Plasmonic substrates Sphere-segment void arrays Roughness Multiscale antennas Surface Enhanced Raman Spectroscopies Sensing |
title_short |
Synergetic Light-Harvesting and Near-Field Enhancement in Multiscale Patterned Gold Substrates |
title_full |
Synergetic Light-Harvesting and Near-Field Enhancement in Multiscale Patterned Gold Substrates |
title_fullStr |
Synergetic Light-Harvesting and Near-Field Enhancement in Multiscale Patterned Gold Substrates |
title_full_unstemmed |
Synergetic Light-Harvesting and Near-Field Enhancement in Multiscale Patterned Gold Substrates |
title_sort |
Synergetic Light-Harvesting and Near-Field Enhancement in Multiscale Patterned Gold Substrates |
dc.creator.none.fl_str_mv |
Hernandez, Luis Alfonso Guerra Millone, María Antonieta Daza Cortés, Emiliano Castez, Marcos Federico Auguié, Baptiste Vela, María Elena Salvarezza, Roberto Carlos Fainstein, Alejandro |
author |
Hernandez, Luis Alfonso Guerra |
author_facet |
Hernandez, Luis Alfonso Guerra Millone, María Antonieta Daza Cortés, Emiliano Castez, Marcos Federico Auguié, Baptiste Vela, María Elena Salvarezza, Roberto Carlos Fainstein, Alejandro |
author_role |
author |
author2 |
Millone, María Antonieta Daza Cortés, Emiliano Castez, Marcos Federico Auguié, Baptiste Vela, María Elena Salvarezza, Roberto Carlos Fainstein, Alejandro |
author2_role |
author author author author author author author |
dc.subject.none.fl_str_mv |
Química Física Ciencias Exactas Plasmonic substrates Sphere-segment void arrays Roughness Multiscale antennas Surface Enhanced Raman Spectroscopies Sensing |
topic |
Química Física Ciencias Exactas Plasmonic substrates Sphere-segment void arrays Roughness Multiscale antennas Surface Enhanced Raman Spectroscopies Sensing |
dc.description.none.fl_txt_mv |
Sphere-segment void (SSV) cavities have emerged as promising substrates for reproducible Surface Enhanced Raman Scattering (SERS), offering strong and uniform electromagnetic enhancement associated with the excitation of cavity-like localized surface plasmon resonances tunable across the UV–vis-near IR range, with a facile large-scale fabrication process. High-resolution electron micrographs of these structures reveal a considerable departure from the idealized smooth spherical cavity shape; notably, the electrochemical deposition of gold yields an important surface roughness. We investigate this contribution to the SERS activity of SSV substrates with a series of experiments, varying the degree of surface roughness using thermal annealing and gradual electrochemical roughening. Notably, we observe that both roughness features and cavity-like modes operate in conjunction as a multiscale antenna to provide larger SERS efficiency than the two mechanisms considered separately. We conclude that the main role of the ordered cavity structure is to increase the plasmonic mode density near rough surface features, thus optimizing the coupling of far-field radiation (light harvesting) to locally enhanced near fields. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas |
description |
Sphere-segment void (SSV) cavities have emerged as promising substrates for reproducible Surface Enhanced Raman Scattering (SERS), offering strong and uniform electromagnetic enhancement associated with the excitation of cavity-like localized surface plasmon resonances tunable across the UV–vis-near IR range, with a facile large-scale fabrication process. High-resolution electron micrographs of these structures reveal a considerable departure from the idealized smooth spherical cavity shape; notably, the electrochemical deposition of gold yields an important surface roughness. We investigate this contribution to the SERS activity of SSV substrates with a series of experiments, varying the degree of surface roughness using thermal annealing and gradual electrochemical roughening. Notably, we observe that both roughness features and cavity-like modes operate in conjunction as a multiscale antenna to provide larger SERS efficiency than the two mechanisms considered separately. We conclude that the main role of the ordered cavity structure is to increase the plasmonic mode density near rough surface features, thus optimizing the coupling of far-field radiation (light harvesting) to locally enhanced near fields. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-08-25 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://sedici.unlp.edu.ar/handle/10915/140853 |
url |
http://sedici.unlp.edu.ar/handle/10915/140853 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/issn/2330-4022 info:eu-repo/semantics/altIdentifier/doi/10.1021/acsphotonics.5b00345 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) |
dc.format.none.fl_str_mv |
application/pdf 1355-1365 |
dc.source.none.fl_str_mv |
reponame:SEDICI (UNLP) instname:Universidad Nacional de La Plata instacron:UNLP |
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SEDICI (UNLP) - Universidad Nacional de La Plata |
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