Abstract
AbstractThe current work attempts to provide a proof of concept for the achievement of semi-quantitative measurements by applying Surface Enhanced Raman Scattering (SERS) on thermally dewetted Au-films. In order to probe the anticipated advanced (device) material, Mitoxantrone (MTX) that exhibits strong SERS signal was utilized as a relevant prototype active molecular agent. The molecule was deposited on substrates of different morphology by spin coating and after evaluation of the collected SERS spectra it is shown that there is an almost linear correlation between the SERS intensity and the concentration of the SERS active molecule. In addition the enhancements achieved depend on the substrate’s morphology.
Highlights
Surface plasmon resonances associated with metallic nanostructures offer unique possibilities in several plasmonic applications such as Surface Enhance Raman Spectroscopy (SERS)
Our findings prove that under the methodology we applied for the deposition of the SERS active agent quantification results are feasible
It is clear from the same SEM images that it is not possible to stimulate coupled plasmon resonance excitation, due to the largely spaced Au nanoparticles for
Summary
Surface plasmon resonances associated with metallic nanostructures offer unique possibilities in several plasmonic applications such as Surface Enhance Raman Spectroscopy (SERS). Some of the early works on SERS active solid substrates involved flat surfaces covered with metallic films (of Ag or Au) with the metal forming nanoscale islands, achieved using appropriate deposition techniques [4,5]. The metal deposition variables such as film nominal thickness, evaporation rate and substrate temperature have been studied for both metals, Au and Ag, by evaluating the resulting SERS enhancements.
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