Nanostructure design for surface-enhanced Raman spectroscopy - prospects and limits

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dc.creatorXiao, Sanshui
dc.creatorMortensen, Niels Asger
dc.creatorJauho, Antti-Pekka
dc.date2008-06-16
dc.date.accessioned2026-07-07T09:45:16Z
dc.date.available2026-07-07T09:45:16Z
dc.descriptionSurface-enhanced Raman spectroscopy (SERS) allows single-molecule detection due to the strong field localization occurring at sharp bends or kinks of the metal-vacuum interface. An important question concerns the limits of the signal enhancement that can be achieved via a judicious design of the surface. By using a specific example of a technologically realizable nanopatterned surface, we demonstrate that while very high enhancement factors (~10^12) can be found for an ideal surface, these are unlikely to be achieved in laboratory samples, because even a minute, inevitable rounding-off strongly suppresses the enhancement, as well as shifts the optimal frequency. Our simulations indicate that the geometric enhancement factors are unlikely to exceed ~10^8 for real samples, and that it is necessary to consider the geometric uncertainty to reliably predict the frequency for maximum enhancement.
dc.description12 pages including 5 figures
dc.identifierhttps://arxiv.org/abs/0806.2534
dc.identifierhttp://arxiv.org/abs/0806.2534
dc.identifierJ. Eur. Opt. Soc., Rapid Publ. 3, 08022 (2008)
dc.identifierdoi:10.2971/jeos.2008.08022
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/163142
dc.subjectOptics
dc.subjectOther Condensed Matter
dc.subjectChemical Physics
dc.subjectComputational Physics
dc.titleNanostructure design for surface-enhanced Raman spectroscopy - prospects and limits
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