Molecules in the mirror: how SERS backgrounds arise from the quantum method of images.
Molecules in the mirror: how SERS backgrounds arise from the quantum method of images.
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DOI:
10.1039/c4cp00093e
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发表时间:
2014-04-14
期刊:
影响因子:
--
通讯作者:
Baumberg JJ
中科院分区:
文献类型:
--
作者:
Barnett SM;Harris N;Baumberg JJ
The SERS background can be derived from the interaction of a molecule near a plasmonic surface with its image molecule. 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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