Thickness-gradient dependent Raman enhancement in silver island films

T. W H Oates, Suguru Noda

Research output: Contribution to journalArticle

13 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 languageEnglish
Article number053106
JournalApplied Physics Letters
Volume94
Issue number5
DOIs
Publication statusPublished - 2009
Externally publishedYes

Fingerprint

silver
gradients
augmentation
scattering cross sections
Raman spectra
scanning electron microscopy

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Thickness-gradient dependent Raman enhancement in silver island films. / Oates, T. W H; Noda, Suguru.

In: Applied Physics Letters, Vol. 94, No. 5, 053106, 2009.

Research output: Contribution to journalArticle

@article{c74fbb5eefb54c58bac08cf78eac1edb,
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 Suguru Noda",
year = "2009",
doi = "10.1063/1.3078272",
language = "English",
volume = "94",
journal = "Applied Physics Letters",
issn = "0003-6951",
publisher = "American Institute of Physics Publising LLC",
number = "5",

}

TY - JOUR

T1 - Thickness-gradient dependent Raman enhancement in silver island films

AU - Oates, T. W H

AU - Noda, Suguru

PY - 2009

Y1 - 2009

N2 - 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.

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.

UR - http://www.scopus.com/inward/record.url?scp=59849114724&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=59849114724&partnerID=8YFLogxK

U2 - 10.1063/1.3078272

DO - 10.1063/1.3078272

M3 - Article

AN - SCOPUS:59849114724

VL - 94

JO - Applied Physics Letters

JF - Applied Physics Letters

SN - 0003-6951

IS - 5

M1 - 053106

ER -