2019
DOI: 10.1021/acs.jpcc.9b06280
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Enhanced Directional Fluorescence Emission of Randomly Oriented Emitters via a Metal–Dielectric Hybrid Nanoantenna

Abstract: This paper reports a hybrid nanoantenna consisting of an inner metal nanodisk and an outer dielectric ring cavity with superior fluorescence enhancement performance. Based on the multipole decomposition analysis and the coupled oscillator model, it is found that the surface plasmon resonance of the metal nanodisk could interact with the magnetic dipole mode of the dielectric ring more strongly than the electric dipole mode, improving the excitation rate in the gap region by more than 1 order of magnitude compa… Show more

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Cited by 36 publications
(30 citation statements)
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“…Second, after being excited, the emitter itself radiates, and mutual interaction with the nanoparticle modifies the radiative and nonradiative decay rates of an emitter. 13,18,22,39 Note that the fluorescence excitation and emission processes are treated independently (i.e. weak coupling) and the emitter is assumed to be below saturation.…”
Section: Methodsmentioning
confidence: 99%
See 1 more Smart Citation
“…Second, after being excited, the emitter itself radiates, and mutual interaction with the nanoparticle modifies the radiative and nonradiative decay rates of an emitter. 13,18,22,39 Note that the fluorescence excitation and emission processes are treated independently (i.e. weak coupling) and the emitter is assumed to be below saturation.…”
Section: Methodsmentioning
confidence: 99%
“…17, [20][21][22][23][24][25][26][27] An optimal fluorescence enhancement factor requires a delicate balance of the excitation, radiative and nonradiative decay rates. 12,13,28,29 To date, plasmonic structures have been developed to obtain fluorescence enhancement, also termed metal-enhanced fluorescence, 30 such as metallic layered structures, 31,32 waveguides, 33 ordered structures, 34,35 nanoantennas, [36][37][38][39] nanoparticles 12,13, 40,41 to name just a few.…”
Section: Introductionmentioning
confidence: 99%
“…Also, a hybrid nanoantenna consisting of an inner metal nanodisk and an outer dielectric ring was theoretically presented to increase the fluorescence enhancement, [294] as displayed in Reproduced with permission. [203] Copyright 2020, American Chemical Society.…”
Section: Increasing Purcell Factor and Collection Efficiencymentioning
confidence: 99%
“…In ref. [298], a numerical analysis was conducted by means of [294] Copyright 2019, American Chemical Society. b) Hybrid nanoantenna consisting of a gold NP on a silicon truncated cone.…”
Section: Figure 23amentioning
confidence: 99%
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