Interplay between near-field properties and Au nanorod cluster structure : extending hot spots for surface-enhanced raman scattering
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Publication Date: | 2019 |
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Format: | Article |
Language: | eng |
Source: | Repositório Institucional da UFRGS |
Download full: | http://hdl.handle.net/10183/205254 |
Summary: | Materials science has observed a continuous increase in the use of metal nanoparticles in a wide range of studies, from fundamental physics to technological applications such as photocatalysis and optical communication devices. This broad scope has the same fundamental origin, the localized surface plasmons, whose excitation leads to strong light confinement, especially in the vicinity of closely spaced nanoparticles, the hot spots. The field amplification may be used to amplify the Raman scattering of adsorbed molecules, which is known as surface-enhanced Raman scattering (SERS). A crucial and limiting characteristic of SERS hot spots is their very localized nature, that influences the SERS intensity reproducibility as well as the probabilities of observation of single-molecule SERS signals. In this paper we discuss the correlation between SERS performance and gold nanorod cluster structures using transmission electron microscopy, SERS spectra and numerical simulations. The experimental data showed interesting behavior for the combination of end-to-end and side-by-side interactions, revealing the possibility of creating strong hot spots with a more extended spatial distribution. The results give insights into the development of high‑performance SERS substrates. |
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Souza, Klester dos SantosTeixeira Neto, EricoTemperini, Marcia Laudelina ArrudaSantos, Diego Pereira dos2020-01-31T04:13:29Z20190103-5053http://hdl.handle.net/10183/205254001106397Materials science has observed a continuous increase in the use of metal nanoparticles in a wide range of studies, from fundamental physics to technological applications such as photocatalysis and optical communication devices. This broad scope has the same fundamental origin, the localized surface plasmons, whose excitation leads to strong light confinement, especially in the vicinity of closely spaced nanoparticles, the hot spots. The field amplification may be used to amplify the Raman scattering of adsorbed molecules, which is known as surface-enhanced Raman scattering (SERS). A crucial and limiting characteristic of SERS hot spots is their very localized nature, that influences the SERS intensity reproducibility as well as the probabilities of observation of single-molecule SERS signals. In this paper we discuss the correlation between SERS performance and gold nanorod cluster structures using transmission electron microscopy, SERS spectra and numerical simulations. The experimental data showed interesting behavior for the combination of end-to-end and side-by-side interactions, revealing the possibility of creating strong hot spots with a more extended spatial distribution. The results give insights into the development of high‑performance SERS substrates.application/pdfengJournal of the Brazilian Chemical Society. Vol. 30, n. 12 (2019), p. 2624-2633Nanopartículas de metalEspalhamento raman intensificado na superficieMorfologia do ponto quenteRessonância fanoNanorod de ouroSERSGold nanorodFano resonanceHot spot morphologyInterplay between near-field properties and Au nanorod cluster structure : extending hot spots for surface-enhanced raman scatteringinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/otherinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT001106397.pdf.txt001106397.pdf.txtExtracted Texttext/plain35088http://www.lume.ufrgs.br/bitstream/10183/205254/2/001106397.pdf.txt5efe26ebf97906c76a13b6ab8b34ffe2MD52ORIGINAL001106397.pdfTexto completo (inglês)application/pdf3384783http://www.lume.ufrgs.br/bitstream/10183/205254/1/001106397.pdfc7235b446f90f0fe63c4fe279d8c17ccMD5110183/2052542024-03-16 05:09:22.535129oai:www.lume.ufrgs.br:10183/205254Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2024-03-16T08:09:22Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Interplay between near-field properties and Au nanorod cluster structure : extending hot spots for surface-enhanced raman scattering |
title |
Interplay between near-field properties and Au nanorod cluster structure : extending hot spots for surface-enhanced raman scattering |
spellingShingle |
Interplay between near-field properties and Au nanorod cluster structure : extending hot spots for surface-enhanced raman scattering Souza, Klester dos Santos Nanopartículas de metal Espalhamento raman intensificado na superficie Morfologia do ponto quente Ressonância fano Nanorod de ouro SERS Gold nanorod Fano resonance Hot spot morphology |
title_short |
Interplay between near-field properties and Au nanorod cluster structure : extending hot spots for surface-enhanced raman scattering |
title_full |
Interplay between near-field properties and Au nanorod cluster structure : extending hot spots for surface-enhanced raman scattering |
title_fullStr |
Interplay between near-field properties and Au nanorod cluster structure : extending hot spots for surface-enhanced raman scattering |
title_full_unstemmed |
Interplay between near-field properties and Au nanorod cluster structure : extending hot spots for surface-enhanced raman scattering |
title_sort |
Interplay between near-field properties and Au nanorod cluster structure : extending hot spots for surface-enhanced raman scattering |
author |
Souza, Klester dos Santos |
author_facet |
Souza, Klester dos Santos Teixeira Neto, Erico Temperini, Marcia Laudelina Arruda Santos, Diego Pereira dos |
author_role |
author |
author2 |
Teixeira Neto, Erico Temperini, Marcia Laudelina Arruda Santos, Diego Pereira dos |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Souza, Klester dos Santos Teixeira Neto, Erico Temperini, Marcia Laudelina Arruda Santos, Diego Pereira dos |
dc.subject.por.fl_str_mv |
Nanopartículas de metal Espalhamento raman intensificado na superficie Morfologia do ponto quente Ressonância fano Nanorod de ouro |
topic |
Nanopartículas de metal Espalhamento raman intensificado na superficie Morfologia do ponto quente Ressonância fano Nanorod de ouro SERS Gold nanorod Fano resonance Hot spot morphology |
dc.subject.eng.fl_str_mv |
SERS Gold nanorod Fano resonance Hot spot morphology |
description |
Materials science has observed a continuous increase in the use of metal nanoparticles in a wide range of studies, from fundamental physics to technological applications such as photocatalysis and optical communication devices. This broad scope has the same fundamental origin, the localized surface plasmons, whose excitation leads to strong light confinement, especially in the vicinity of closely spaced nanoparticles, the hot spots. The field amplification may be used to amplify the Raman scattering of adsorbed molecules, which is known as surface-enhanced Raman scattering (SERS). A crucial and limiting characteristic of SERS hot spots is their very localized nature, that influences the SERS intensity reproducibility as well as the probabilities of observation of single-molecule SERS signals. In this paper we discuss the correlation between SERS performance and gold nanorod cluster structures using transmission electron microscopy, SERS spectra and numerical simulations. The experimental data showed interesting behavior for the combination of end-to-end and side-by-side interactions, revealing the possibility of creating strong hot spots with a more extended spatial distribution. The results give insights into the development of high‑performance SERS substrates. |
publishDate |
2019 |
dc.date.issued.fl_str_mv |
2019 |
dc.date.accessioned.fl_str_mv |
2020-01-31T04:13:29Z |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/other |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/205254 |
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0103-5053 |
dc.identifier.nrb.pt_BR.fl_str_mv |
001106397 |
identifier_str_mv |
0103-5053 001106397 |
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http://hdl.handle.net/10183/205254 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Journal of the Brazilian Chemical Society. Vol. 30, n. 12 (2019), p. 2624-2633 |
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info:eu-repo/semantics/openAccess |
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openAccess |
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