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Excitation and emission enhancement of single molecule fluorescence through multiple surface-plasmon resonances on metal trimer nanoantennas

AuthorsGiannini, V. ; Sánchez-Gil, José A.
Keywordsmetallic nanoantennas
surface plasmons
Issue Date1-May-2008
PublisherOptical Society of America
CitationOptics Letters 33, 899 (2008)
AbstractWe study theoretically the light scattering from trimers of metal nanowires, with emphasis on the occurrence of multiple surface-plasmon resonances, showing that such resonances can be exploited to achieve twofold-enhanced fluorescence from a single molecule placed in the nanotrimer gaps, even if excitation and emission frequencies are separated. Pump enhancement stems from the local field enhancement coinciding with one of the resonances, whereas a strong enhancement of the radiative decay rate (and quantum yield) is revealed at a different resonance, leading to a large overall signal emission.
Description© 2008 Optical Society of America
Publisher version (URL)http://www.opticsinfobase.org/ol/viewmedia.cfm?URI=ol-33-9-899&seq=0
Appears in Collections:(CFMAC-IEM) Artículos
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