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2013-07-03 - Article/Dans un journal avec peer-review - Anglais - 13 page(s)

Renaud Vallee, Kolaric Branco , Jianing Chen, Rainer Hillenbrand, Simona Ungureanu, "Far-field disentanglement of modes in Hybrid Plasmonic-Photonic Crystals by fluorescence nano-reporters," in Nanophotonics, 2, 173-185, 3

  • Codes CREF : Sciences exactes et naturelles (DI1000)
  • Unités de recherche UMONS : Laboratoire Interfaces et Fluides complexes (S885)
  • Instituts UMONS : Institut de Recherche sur les Systèmes Complexes (Complexys)
  • Centres UMONS : Centre d’Innovation et de Recherche en Matériaux Polymères (CIRMAP)
Texte intégral :

Abstract(s) :

(Anglais) In this paper, the resonance modes exhibited by a hybrid nanostructure have been disentangled in the far-field owing to narrow-band fluorescence nano-reporters. Hybrid plasmonic-photonic crystals were fabricated using large (457 nm) monodisperse polystyrene spheres self-assembled into 2D photonic crystals and subsequently coated by a 30 nm thick silver layer. Such structures exhibit a complex resonance pattern, which has been elucidated owing to numerical simulations and electric near-field patterns obtained with a scattering type scanning near-field optical microscope (s-SNOM). For the sake of disentangling the resonance modes of the hybrid structure in the far-field, different types of semiconductor quantum dots (QDs), acting as nanoreporters of the local interactions, were dispersed on top of distinct structures. Depending on the relative overlap of the emission spectrum of a particular type of QDs with the resonance features of the hybrid structure, we affect their emission rate in a unique way, as a consequence of the complex interaction occurring between the plasmo-photonic modes and the excitons. Such plasmonic structures appear to be particularly relevant for fluorescence-based sensing devices.

Identifiants :
  • DOI : DOI 10.1515/nanoph-2013-0004

Mots-clés :
  • (Anglais) plasmonic crystal; fluorescence lifetime; surface plasmon resonance; Bloch modes; Purcell effect