Sharpening the shape distribution of gold nanoparticles by laser irradiation

6 págs. 5 figs.

Detalhes bibliográficos
Autores: Resta, Vincenzo, Siegel, Jan, Bonse, J., Gonzalo de los Reyes, J., Afonso, Carmen N., Piscopiello, E., Van Tenedeloo, G.
Formato: artículo
Fecha de publicación:2006
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/45729
Acesso em linha:http://hdl.handle.net/10261/45729
Access Level:acceso abierto
Palavra-chave:[PACS] Nanocrystalline materials
[PACS] Structure of nanocrystals and nanoparticles ("colloidal" quantum dots but not gate-isolated embedded quantum dots)
[PACS] Structural transitions in nanoscale materials
[PACS] Nanocrystals, nanoparticles, and nanoclusters
[PACS] Metals, semimetals, and alloys
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spelling Sharpening the shape distribution of gold nanoparticles by laser irradiationResta, VincenzoSiegel, JanBonse, J.Gonzalo de los Reyes, J.Afonso, Carmen N.Piscopiello, E.Van Tenedeloo, G.[PACS] Nanocrystalline materials[PACS] Structure of nanocrystals and nanoparticles ("colloidal" quantum dots but not gate-isolated embedded quantum dots)[PACS] Nanocrystalline materials[PACS] Structural transitions in nanoscale materials[PACS] Nanocrystals, nanoparticles, and nanoclusters[PACS] Metals, semimetals, and alloys6 págs. 5 figs.This work reports on the optical response and morphological changes of gold nanoparticles (NPs) induced by laser irradiation with single nanosecond laser pulses of different fluences and wavelengths. The as-grown specimens consist of irregularly shaped NPs (10–13 nm in average dimensions) produced by pulsed laser deposition on a substrate. They exhibit a broad optical absorption band related to the surface plasmon resonance (SPR) peaking in the range of 634–685 nm. After irradiation with fluences above a threshold value, a blueshift, a decrease of the overall absorption, and a narrowing of the SPR band are observed. The SPR peak wavelength and amplitude after irradiation at increasing fluences reach an approximately constant value, irrespective of the irradiation wavelength. This value is consistent with a homogeneous distribution of spherical gold NPs with a mean diameter close to the average initial dimensions as determined by transmission electron microscopy. The results demonstrate that the conversion of irregularly shaped NPs into spherical NPs with reduced dimension dispersion is a thermally driven process and occurs within a fluence interval defined by the melting threshold of all NPs and the ablation threshold. Whereas the useful fluence interval is controlled by the effective fluence absorbed, that is dependent on the laser wavelength and thermal properties of the substrate, the final shape and dimensions of the NPs are independent of the irradiation wavelength provided the fluence is within this useful interval.This work has partially been supported by HPRN-CT-2002-00328, EU and MAT2005-06508-C02-01, MEC (Spain). One of the authors (J.B.) acknowledges the funding of the CSIC through a contract in the frame of the I3P program (Ref. No. I3P-Pc2002), cofunded by the European Social Fund.Peer reviewedAmerican Institute of Physics201220122006info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/45729reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1063/1.2358822info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/457292026-05-22T06:33:51Z
dc.title.none.fl_str_mv Sharpening the shape distribution of gold nanoparticles by laser irradiation
title Sharpening the shape distribution of gold nanoparticles by laser irradiation
spellingShingle Sharpening the shape distribution of gold nanoparticles by laser irradiation
Resta, Vincenzo
[PACS] Nanocrystalline materials
[PACS] Structure of nanocrystals and nanoparticles ("colloidal" quantum dots but not gate-isolated embedded quantum dots)
[PACS] Nanocrystalline materials
[PACS] Structural transitions in nanoscale materials
[PACS] Nanocrystals, nanoparticles, and nanoclusters
[PACS] Metals, semimetals, and alloys
title_short Sharpening the shape distribution of gold nanoparticles by laser irradiation
title_full Sharpening the shape distribution of gold nanoparticles by laser irradiation
title_fullStr Sharpening the shape distribution of gold nanoparticles by laser irradiation
title_full_unstemmed Sharpening the shape distribution of gold nanoparticles by laser irradiation
title_sort Sharpening the shape distribution of gold nanoparticles by laser irradiation
dc.creator.none.fl_str_mv Resta, Vincenzo
Siegel, Jan
Bonse, J.
Gonzalo de los Reyes, J.
Afonso, Carmen N.
Piscopiello, E.
Van Tenedeloo, G.
author Resta, Vincenzo
author_facet Resta, Vincenzo
Siegel, Jan
Bonse, J.
Gonzalo de los Reyes, J.
Afonso, Carmen N.
Piscopiello, E.
Van Tenedeloo, G.
author_role author
author2 Siegel, Jan
Bonse, J.
Gonzalo de los Reyes, J.
Afonso, Carmen N.
Piscopiello, E.
Van Tenedeloo, G.
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv [PACS] Nanocrystalline materials
[PACS] Structure of nanocrystals and nanoparticles ("colloidal" quantum dots but not gate-isolated embedded quantum dots)
[PACS] Nanocrystalline materials
[PACS] Structural transitions in nanoscale materials
[PACS] Nanocrystals, nanoparticles, and nanoclusters
[PACS] Metals, semimetals, and alloys
topic [PACS] Nanocrystalline materials
[PACS] Structure of nanocrystals and nanoparticles ("colloidal" quantum dots but not gate-isolated embedded quantum dots)
[PACS] Nanocrystalline materials
[PACS] Structural transitions in nanoscale materials
[PACS] Nanocrystals, nanoparticles, and nanoclusters
[PACS] Metals, semimetals, and alloys
description 6 págs. 5 figs.
publishDate 2006
dc.date.none.fl_str_mv 2006
2012
2012
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/45729
url http://hdl.handle.net/10261/45729
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1063/1.2358822
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv American Institute of Physics
publisher.none.fl_str_mv American Institute of Physics
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,228081

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