We studied silver nanoparticles combined with periodic gratings on a glass surface. The gratings were fabricated by selective etching of the glass slide patterned by thermal poling. The nanoparticles were grown on the bottom of the gratings’ grooves by out-diffusion technique. Obtained nanostructures supported both plasmonic and grating optical resonances and demonstrated SERS enhancement two times higher than one of the pure plasmonic structure.
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