TERMIUM Plus®

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DRES [1 record]

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Record 1 2015-09-09

English

Subject field(s)
  • Optics
  • Biophysics
CONT

Although Raman scattering cross sections (∼ 10−30 cm2) are orders of magnitude lower than fluorescence absorption cross section, they can be enormously amplified if the single molecule is trapped in a so-called 'hot spot' of a metallic nanoparticle, giving rise to surface-enhanced Raman scattering (SERS).

French

Domaine(s)
  • Optique
  • Biophysique
CONT

[La] diffusion Raman exaltée de surface(DRES ou SERS [soit] «surface-enhanced Raman scattering») peut procurer un gain de sensibilité de l'ordre de 106 fois et plus, égalisant ainsi la sensibilité de fluorescence et permettant la détection de traces. [...] la DRES ne se produit que pour les molécules se trouvant au voisinage des surfaces métalliques appropriées(nanoparticules, électrodes microscopiquement rugueuses ou films de métaux nobles, comme Ag [argent] et Au [or]).

Spanish

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