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
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/79197
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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 |
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Universidad Nacional de La Plata |
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SEDICI (UNLP) - Universidad Nacional de La Plata |
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