Browse Publications Technical Papers 2008-01-1267
2008-04-14

Plasmonic in Metallic Nanostructures – Fabrication, Characterization and Applications in Surface-Enhanced Spectroscopy 2008-01-1267

We are witnessing a rapid and ongoing expansion of nanoscience, driven by potential applications in advanced materials and nanotechnology. There is a race to develop techniques that may allow controlling the size, shape of nanostructures that can allow the tuning of their optical and electronic properties. Plasmonics is a field that encompasses and profits from the optical enhancement in nanostructures that support plasmon excitations. One of these new techniques is surface-enhanced Raman scattering (SERS), commonly used for nanostructure characterization. In the present report, we present a theoretical model for plasmon excitation and electric field enhancement that help to provide an explanation for the special features observed in experimental SERS. Two sets of experimental results are discussed illustrating the make out of the signature of the plasmonics producing the optical enhancement. The nanostructures used are silver colloids in dynamics experiments and spin coated metal island films

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