M. Kahraman, S. Cakmakyapan, E. Ozbay and M. Culha An array of surface-enhanced Raman scattering substrates based on plasmonic lenses Annalen der Physik 524
An array of ring-shaped holes is prepared from silver thin films using electron beam lithography. The optimal conditions for high performance as a surface-enhanced Raman scattering (SERS) substrate are investigated. It is found that there is an optimal configuration for ring-shaped holes with a 3.0-µm diameter and 200-nm slit with. The SERS activity on this optimal lens configuration is found to be 13 times greater than that of the activity on the silver thin film.
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