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Detection of Plasmon Coupling between Silver Nanowires Based on Hyperspectral Darkfield and SERS Imaging and Supported by DDA Theoretical Calculations.
Santos, Jonnatan J; Ivanov, Evandro; dos Santos, Diego P; Toma, Henrique E; Corio, Paola.
Afiliação
  • Santos JJ; Institute of Chemistry, University of Sao Paulo, Av. Prof. Lineu Prestes, 748, Cidade Universitaria, Sao Paulo-SP, 05508000, Brazil.
  • Ivanov E; Institute of Chemistry, University of Sao Paulo, Av. Prof. Lineu Prestes, 748, Cidade Universitaria, Sao Paulo-SP, 05508000, Brazil.
  • dos Santos DP; Institute of Chemistry, University of Campinas, Barao Geraldo, Campinas-SP, 13083970, Brazil.
  • Toma HE; Institute of Chemistry, University of Sao Paulo, Av. Prof. Lineu Prestes, 748, Cidade Universitaria, Sao Paulo-SP, 05508000, Brazil.
  • Corio P; Institute of Chemistry, University of Sao Paulo, Av. Prof. Lineu Prestes, 748, Cidade Universitaria, Sao Paulo-SP, 05508000, Brazil. paola@iq.usp.br.
Chemphyschem ; 17(4): 463-7, 2016 Feb 16.
Article em En | MEDLINE | ID: mdl-26670701
We report the unprecedented observation of plasmon coupling between silver nanowires, showing how the surface-enhanced Raman scattering depends upon this interaction and how the spectrum can be shaped by the hot spot. Such observations were accomplished by Raman spectroscopy mapping of silver nanowires modified with rhodamine. The local spectra on the hot spots were measured by darkfield hyperspectral microscopy, a powerful but uncommonly used technique that is capable of determining the location, structure, and spectra of the hot spots. The result obtained by the simulation of two parallel nanowires based on the discrete dipole approximation (DDA) method was in excellent agreement with the results obtained experimentally.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Tipo de estudo: Diagnostic_studies Idioma: En Revista: Chemphyschem Assunto da revista: BIOFISICA / QUIMICA Ano de publicação: 2016 Tipo de documento: Article País de afiliação: Brasil País de publicação: Alemanha
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Tipo de estudo: Diagnostic_studies Idioma: En Revista: Chemphyschem Assunto da revista: BIOFISICA / QUIMICA Ano de publicação: 2016 Tipo de documento: Article País de afiliação: Brasil País de publicação: Alemanha