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- Title
Surface-enhanced Raman scattering from ordered Ag nanocluster arrays.
- Authors
Schmidt, Jason P; Cross, Sarah E; Buratto, Steven K
- Abstract
We have examined the effect of ordered silver nanocluster substrates on the surface-enhanced Raman spectrum of rhodamine 6G (R6G). Triangular shaped silver nanocluster arrays with order on the approximately 100 mum range were prepared using nanosphere lithography. Direct comparisons of R6G surface-enhanced Raman spectroscopy (SERS) signals between ordered nanocluster regions and amorphous Ag regions prepared under identical deposition conditions provide strong evidence of an electromagnetic field enhancement attributed to the unique nanocluster morphology. We have obtained order of magnitude enhancement factors for both 200 and 90 nm Ag nanocluster SERS substrates relative to Ag films.
- Publication
The Journal of chemical physics, 2004, Vol 121, Issue 21, p10657
- ISSN
0021-9606
- Publication type
Journal Article
- DOI
10.1063/1.1799992