A. Kravchenko, R. Khakimov, A. Shevchenko, A. Priimagi, M. Kaivola, V. Ovchinnikov
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Design and fabrication of plasmonic nanostructures for spectroscopic applications
This work is focused on the design and fabrication of plasmonic nanostructures for spectroscopic applications. Our goal is to fabricate large-surface-area plasmonic nanostructures that provide local enhancement of electromagnetic fields for applications in fluorescence and Raman scattering spectroscopy. Periodic two-dimensional arrays of nanogrooves and nanopillars are obtained by holographic photolithography that makes use of surface relief gratings on azo-polymer films. Numerical calculations are performed to optimize the geometrical and material parameters of the structures in order to maximize the field enhancement factor.
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