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Interaction among plasmonic resonances in a gold film embedding a two-dimensional array of polymeric nanopillars |
JOSA B, Vol. 29, Issue 7, pp. 1641-1647 (2012)
http://dx.doi.org/10.1364/JOSAB.29.001641
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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.
© 2012 Optical Society of America
OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(160.4236) Materials : Nanomaterials
(050.6624) Diffraction and gratings : Subwavelength structures
ToC Category:
Optics at Surfaces
History
Original Manuscript: February 13, 2012
Manuscript Accepted: March 1, 2012
Published: June 13, 2012
Citation
Silvia Giudicatti, Franco Marabelli, Andrea Valsesia, Paola Pellacani, Pascal Colpo, and Francois Rossi, "Interaction among plasmonic resonances in a gold film embedding a two-dimensional array of polymeric nanopillars," J. Opt. Soc. Am. B 29, 1641-1647 (2012)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-29-7-1641
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