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Hybrid polymer‐plasmonic nanostructures might combine high enhancement of localized fields from metal nanoparticles with light confinement and long‐range transport in subwavelength dielectric structures. Here, the complex behavior of fluorophores coupling to Au nanoparticles within polymer nanowires, which features localized metal‐enhanced fluorescence (MEF) with unique characteristics compared to conventional structures, is reported. The intensification effect when the particle is placed in the organic filaments is remarkably higher with respect to thin films of comparable thickness, thus highlighting a specific, nanowire‐related enhancement of MEF effects. A dependence on the confinement volume in the dielectric nanowire is also indicated, with MEF significantly increasing upon reduction of the wire diameter. These findings are rationalized by finite element simulations, predicting a position‐dependent …
Publication date: 
1 May 2018

Andrea Camposeo, Radoslaw Jurga, Maria Moffa, Alberto Portone, Francesco Cardarelli, Fabio Della Sala, Cristian Ciracì, Dario Pisignano

Biblio References: 
Volume: 14 Issue: 19 Pages: 1800187