Molecules in the mirror: how SERS backgrounds arise from the quantum method of images
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Baumberg, J., Barnett, S., & Harris, N. (2014). Molecules in the mirror: how SERS backgrounds arise from the quantum method of images. https://doi.org/10.1039/c4cp00093e
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.
molecule, SERS, Raman, plasmon, background
This work was supported by UK EPSRC EP/C511786/1, EP/F011393, ERC 320503 LINASS, EU CUBIHOLES, 3M, the Royal Society and the Wolfson Foundation.
External DOI: https://doi.org/10.1039/c4cp00093e
This record's URL: https://www.repository.cam.ac.uk/handle/1810/245262