Sizing gold nanoparticles by optical extinction spectroscopy

Autores
Scaffardi, Lucía Beatriz; Pellegri, N.; Sanctis, O. de; Tocho, Jorge Omar
Año de publicación
2005
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The measurement of optical extinction is used to determine the size of nearly spherical gold nanoparticles suspended in solution, produced by a 'reverse micelles' process. The contrast between the maximum and the minimum in the extinction spectra around 450 and 520 nm shows a linear dependence with the mean radius of the gold particles less than 3 nm; however, the method can be used to size particles up to 7 nm. Experimental results for extinction spectra can be fitted by Mie's theory if the optical constants from bulk material values are modified by introducing the limitation of the mean free path due to collisions of conduction electrons with the boundary of the nanoparticles.
Facultad de Ciencias Exactas
Centro de Investigaciones Ópticas
Materia
Física
accelerators
beams and electromagnetism
condensed matter
Nanoscale science and low-D systems
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/79197
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/79197
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Sizing gold nanoparticles by optical extinction spectroscopyScaffardi, Lucía BeatrizPellegri, N.Sanctis, O. deTocho, Jorge OmarFísicaacceleratorsbeams and electromagnetismcondensed matterNanoscale science and low-D systemsThe measurement of optical extinction is used to determine the size of nearly spherical gold nanoparticles suspended in solution, produced by a 'reverse micelles' process. The contrast between the maximum and the minimum in the extinction spectra around 450 and 520 nm shows a linear dependence with the mean radius of the gold particles less than 3 nm; however, the method can be used to size particles up to 7 nm. Experimental results for extinction spectra can be fitted by Mie's theory if the optical constants from bulk material values are modified by introducing the limitation of the mean free path due to collisions of conduction electrons with the boundary of the nanoparticles.Facultad de Ciencias ExactasCentro de Investigaciones Ópticas2005info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf158-163http://sedici.unlp.edu.ar/handle/10915/79197enginfo:eu-repo/semantics/altIdentifier/doi/10.1088/0957-4484/16/1/030info:eu-repo/semantics/altIdentifier/hdl/11746/559info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-22T16:55:16Zoai:sedici.unlp.edu.ar:10915/79197Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-22 16:55:16.236SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Sizing gold nanoparticles by optical extinction spectroscopy
title Sizing gold nanoparticles by optical extinction spectroscopy
spellingShingle Sizing gold nanoparticles by optical extinction spectroscopy
Scaffardi, Lucía Beatriz
Física
accelerators
beams and electromagnetism
condensed matter
Nanoscale science and low-D systems
title_short Sizing gold nanoparticles by optical extinction spectroscopy
title_full Sizing gold nanoparticles by optical extinction spectroscopy
title_fullStr Sizing gold nanoparticles by optical extinction spectroscopy
title_full_unstemmed Sizing gold nanoparticles by optical extinction spectroscopy
title_sort Sizing gold nanoparticles by optical extinction spectroscopy
dc.creator.none.fl_str_mv Scaffardi, Lucía Beatriz
Pellegri, N.
Sanctis, O. de
Tocho, Jorge Omar
author Scaffardi, Lucía Beatriz
author_facet Scaffardi, Lucía Beatriz
Pellegri, N.
Sanctis, O. de
Tocho, Jorge Omar
author_role author
author2 Pellegri, N.
Sanctis, O. de
Tocho, Jorge Omar
author2_role author
author
author
dc.subject.none.fl_str_mv Física
accelerators
beams and electromagnetism
condensed matter
Nanoscale science and low-D systems
topic Física
accelerators
beams and electromagnetism
condensed matter
Nanoscale science and low-D systems
dc.description.none.fl_txt_mv The measurement of optical extinction is used to determine the size of nearly spherical gold nanoparticles suspended in solution, produced by a 'reverse micelles' process. The contrast between the maximum and the minimum in the extinction spectra around 450 and 520 nm shows a linear dependence with the mean radius of the gold particles less than 3 nm; however, the method can be used to size particles up to 7 nm. Experimental results for extinction spectra can be fitted by Mie's theory if the optical constants from bulk material values are modified by introducing the limitation of the mean free path due to collisions of conduction electrons with the boundary of the nanoparticles.
Facultad de Ciencias Exactas
Centro de Investigaciones Ópticas
description The measurement of optical extinction is used to determine the size of nearly spherical gold nanoparticles suspended in solution, produced by a 'reverse micelles' process. The contrast between the maximum and the minimum in the extinction spectra around 450 and 520 nm shows a linear dependence with the mean radius of the gold particles less than 3 nm; however, the method can be used to size particles up to 7 nm. Experimental results for extinction spectra can be fitted by Mie's theory if the optical constants from bulk material values are modified by introducing the limitation of the mean free path due to collisions of conduction electrons with the boundary of the nanoparticles.
publishDate 2005
dc.date.none.fl_str_mv 2005
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/10915/79197
url http://sedici.unlp.edu.ar/handle/10915/79197
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1088/0957-4484/16/1/030
info:eu-repo/semantics/altIdentifier/hdl/11746/559
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
158-163
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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score 12.982451

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