Molecules in the mirror: how SERS backgrounds arise from the quantum method of images

The Raman coupling of light to molecular vibrations is strongly modified when they are placed near a plasmonic metal surface, with the appearance of a strong broad continuum background in addition to the normal surface-enhanced Raman scattering (SERS) peaks. Using a quantum method of images approach...

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Detalles Bibliográficos
Autores principales: Barnett, Stephen M., Harris, Nadine, Baumberg, Jeremy J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Royal Society of Chemistry 2014
Materias:
Chemistry
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4047623/
https://www.ncbi.nlm.nih.gov/pubmed/24584480
http://dx.doi.org/10.1039/c4cp00093e
Descripción
Sumario:The Raman coupling of light to molecular vibrations is strongly modified when they are placed near a plasmonic metal surface, with the appearance of a strong broad continuum background in addition to the normal surface-enhanced Raman scattering (SERS) peaks. Using a quantum method of images approach, we produce a simple but quantitative explanation of the inevitable presence of the background, due to the resistive damping of the image molecule. This model thus suggests new strategies for enhancing the SERS peak to background ratio.

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