Thickness-gradient dependent Raman enhancement in silver island films

T. W.H. Oates; S. Noda

doi:10.1063/1.3078272

Thickness-gradient dependent Raman enhancement in silver island films

T. W.H. Oates, S. Noda

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

We show evidence of a dependence of the enhancement of the Raman scattering cross section on the length of the gradient in graded silver island films. A factor-of-three increase in the Raman signal is observed for gradients with length of the order of 0.5 mm when compared to gradients of the order of 9 mm. Scanning electron microscopy reveals the nanostructure of the two films to be statistically similar. We attribute the observation to differences in plasmon hybridization in the gradients arising from long range structural differences.

Original language	English
Article number	053106
Journal	Applied Physics Letters
Volume	94
Issue number	5
DOIs	https://doi.org/10.1063/1.3078272
Publication status	Published - 2009
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.3078272

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title = "Thickness-gradient dependent Raman enhancement in silver island films",

abstract = "We show evidence of a dependence of the enhancement of the Raman scattering cross section on the length of the gradient in graded silver island films. A factor-of-three increase in the Raman signal is observed for gradients with length of the order of 0.5 mm when compared to gradients of the order of 9 mm. Scanning electron microscopy reveals the nanostructure of the two films to be statistically similar. We attribute the observation to differences in plasmon hybridization in the gradients arising from long range structural differences.",

author = "Oates, {T. W.H.} and S. Noda",

note = "Funding Information: T.W.H.O. acknowledges support from the JSPS.",

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AU - Noda, S.

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AB - We show evidence of a dependence of the enhancement of the Raman scattering cross section on the length of the gradient in graded silver island films. A factor-of-three increase in the Raman signal is observed for gradients with length of the order of 0.5 mm when compared to gradients of the order of 9 mm. Scanning electron microscopy reveals the nanostructure of the two films to be statistically similar. We attribute the observation to differences in plasmon hybridization in the gradients arising from long range structural differences.

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Thickness-gradient dependent Raman enhancement in silver island films

Abstract

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