Near field enhancement in Ag Au nanospheres heterodimers

Autores
Encina, Ezequiel Roberto; Coronado, Eduardo A.
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The near field enhancement in Ag Au nanospheres heterodimers excited at their respective resonance wavelengths is studied in detail using rigorous electrodynamics calculations based on the Generalized Multiparticle Mie theory. The effect of incident polarization, nanosphere radius, and interparticle separation on the distribution pattern and magnitude of the near field enhancement is analyzed. As in the homodimer case, the highest enhancement values are found for incident polarization parallel to the dimer axis. However, there are significant different enhancement patterns around the dimer according to the excitation wavelength. Analyzing the vector field plot of the enhancement, and comparing it with those corresponding to Ag and Au nanospheres homodimers, the differences observed are rationalized in terms of multipole excitations to explain the effect of breaking the symmetry of the plasmonic heterodimer. The results presented could be a useful tool for future design and engineering of plasmonic devices based on the near field properties such as substrates for enhanced spectroscopies and sensing. © 2011 American Chemical Society.
Fil: Encina, Ezequiel Roberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Fil: Coronado, Eduardo A.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Materia
Plasmonics
Metal Nanoparticles And Aggregates
Optical Properties
Electrodynamics Simulations
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/61734
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/61734
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Near field enhancement in Ag Au nanospheres heterodimersEncina, Ezequiel RobertoCoronado, Eduardo A.PlasmonicsMetal Nanoparticles And AggregatesOptical PropertiesElectrodynamics Simulationshttps://purl.org/becyt/ford/2.10https://purl.org/becyt/ford/2The near field enhancement in Ag Au nanospheres heterodimers excited at their respective resonance wavelengths is studied in detail using rigorous electrodynamics calculations based on the Generalized Multiparticle Mie theory. The effect of incident polarization, nanosphere radius, and interparticle separation on the distribution pattern and magnitude of the near field enhancement is analyzed. As in the homodimer case, the highest enhancement values are found for incident polarization parallel to the dimer axis. However, there are significant different enhancement patterns around the dimer according to the excitation wavelength. Analyzing the vector field plot of the enhancement, and comparing it with those corresponding to Ag and Au nanospheres homodimers, the differences observed are rationalized in terms of multipole excitations to explain the effect of breaking the symmetry of the plasmonic heterodimer. The results presented could be a useful tool for future design and engineering of plasmonic devices based on the near field properties such as substrates for enhanced spectroscopies and sensing. © 2011 American Chemical Society.Fil: Encina, Ezequiel Roberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; ArgentinaFil: Coronado, Eduardo A.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; ArgentinaAmerican Chemical Society2011-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/61734Encina, Ezequiel Roberto; Coronado, Eduardo A.; Near field enhancement in Ag Au nanospheres heterodimers; American Chemical Society; Journal of Physical Chemistry C; 115; 32; 8-2011; 15908-159141932-7447CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1021/jp205158winfo:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/jp205158winfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:05:35Zoai:ri.conicet.gov.ar:11336/61734instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 10:05:35.537CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Near field enhancement in Ag Au nanospheres heterodimers
title Near field enhancement in Ag Au nanospheres heterodimers
spellingShingle Near field enhancement in Ag Au nanospheres heterodimers
Encina, Ezequiel Roberto
Plasmonics
Metal Nanoparticles And Aggregates
Optical Properties
Electrodynamics Simulations
title_short Near field enhancement in Ag Au nanospheres heterodimers
title_full Near field enhancement in Ag Au nanospheres heterodimers
title_fullStr Near field enhancement in Ag Au nanospheres heterodimers
title_full_unstemmed Near field enhancement in Ag Au nanospheres heterodimers
title_sort Near field enhancement in Ag Au nanospheres heterodimers
dc.creator.none.fl_str_mv Encina, Ezequiel Roberto
Coronado, Eduardo A.
author Encina, Ezequiel Roberto
author_facet Encina, Ezequiel Roberto
Coronado, Eduardo A.
author_role author
author2 Coronado, Eduardo A.
author2_role author
dc.subject.none.fl_str_mv Plasmonics
Metal Nanoparticles And Aggregates
Optical Properties
Electrodynamics Simulations
topic Plasmonics
Metal Nanoparticles And Aggregates
Optical Properties
Electrodynamics Simulations
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.10
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv The near field enhancement in Ag Au nanospheres heterodimers excited at their respective resonance wavelengths is studied in detail using rigorous electrodynamics calculations based on the Generalized Multiparticle Mie theory. The effect of incident polarization, nanosphere radius, and interparticle separation on the distribution pattern and magnitude of the near field enhancement is analyzed. As in the homodimer case, the highest enhancement values are found for incident polarization parallel to the dimer axis. However, there are significant different enhancement patterns around the dimer according to the excitation wavelength. Analyzing the vector field plot of the enhancement, and comparing it with those corresponding to Ag and Au nanospheres homodimers, the differences observed are rationalized in terms of multipole excitations to explain the effect of breaking the symmetry of the plasmonic heterodimer. The results presented could be a useful tool for future design and engineering of plasmonic devices based on the near field properties such as substrates for enhanced spectroscopies and sensing. © 2011 American Chemical Society.
Fil: Encina, Ezequiel Roberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Fil: Coronado, Eduardo A.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
description The near field enhancement in Ag Au nanospheres heterodimers excited at their respective resonance wavelengths is studied in detail using rigorous electrodynamics calculations based on the Generalized Multiparticle Mie theory. The effect of incident polarization, nanosphere radius, and interparticle separation on the distribution pattern and magnitude of the near field enhancement is analyzed. As in the homodimer case, the highest enhancement values are found for incident polarization parallel to the dimer axis. However, there are significant different enhancement patterns around the dimer according to the excitation wavelength. Analyzing the vector field plot of the enhancement, and comparing it with those corresponding to Ag and Au nanospheres homodimers, the differences observed are rationalized in terms of multipole excitations to explain the effect of breaking the symmetry of the plasmonic heterodimer. The results presented could be a useful tool for future design and engineering of plasmonic devices based on the near field properties such as substrates for enhanced spectroscopies and sensing. © 2011 American Chemical Society.
publishDate 2011
dc.date.none.fl_str_mv 2011-08
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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://hdl.handle.net/11336/61734
Encina, Ezequiel Roberto; Coronado, Eduardo A.; Near field enhancement in Ag Au nanospheres heterodimers; American Chemical Society; Journal of Physical Chemistry C; 115; 32; 8-2011; 15908-15914
1932-7447
CONICET Digital
CONICET
url http://hdl.handle.net/11336/61734
identifier_str_mv Encina, Ezequiel Roberto; Coronado, Eduardo A.; Near field enhancement in Ag Au nanospheres heterodimers; American Chemical Society; Journal of Physical Chemistry C; 115; 32; 8-2011; 15908-15914
1932-7447
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1021/jp205158w
info:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/jp205158w
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Chemical Society
publisher.none.fl_str_mv American Chemical Society
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.13397

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