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|Title:||Interaction among plasmonic resonances in a gold film embedding a two-dimensional array of polymeric nanopillars|
|Authors:||GIUDICATTI Silvia; MARABELLI F.; VALSESIA Andrea; PELLACANI Paola; COLPO Pascal; ROSSI Francois|
|Citation:||JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS vol. Vol. 29 no. 7 p. 1641-1647|
|Publisher:||OPTICAL SOC AMER|
|Type:||Articles in periodicals and books|
|Abstract:||Nanostructured surfaces have proven to be effective in controlling the electric field distribution and triggering a series of interesting physical effects. In particular, ordered metallic lattices with a typical size of the same order of magnitude of the wavelength of the incident radiation exhibit extraordinary transmission and reflection properties and represent a sensitive tool to exploit surface plasmon resonance for sensing applications. We investigated, either by experimental structural and optical measurements or by modeling and calculations, samples consisting of a two-dimensional array of polymeric pillars embedded in a gold film. In particular, we analyzed the dependence of the plasmonic resonance on the pillar size. We showed that a peculiar interplay among localized modes and propagating surface plasmon polaritons exists for some selected conditions and affects the spectral distribution, lifetime, and field configuration of the plasmonic excitations.|
|JRC Directorate:||Institute for Health and Consumer Protection Historical Collection|
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