Förster Energy Transfer in the Vicinity of Two Metallic Nanospheres (Dimer)

Zurita-Sánchez, Jorge R.; Méndez-Villanueva, Jairo

doi:10.1007/s11468-017-0583-4

Cited by 16 publications

(10 citation statements)

References 23 publications

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“…[18][19][20][21] A significant advantage of this approach is that it preserves the ability to use standard FRET fluorophore pairs. Several contributions have explored the influence of nanophotonics for FRET using microcavities, 18,[22][23][24] mirrors, [25][26][27][28][29] nanoparticles, [30][31][32][33][34][35][36][37] nanoapertures, [38][39][40][41][42][43][44] nanoantennas, [45][46][47][48][49] waveguides, 50 or hyperbolic metamaterials. 51,52 However, none of these works has clearly demonstrated experimentally the enhancement of the smFRET detection range in the near field.…”

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confidence: 99%

“…To overcome these limits, an alternative strategy uses nanophotonic components to tailor the electromagnetic environment surrounding the FRET pair in such a way to promote the energy transfer and enhance the fluorescence detection rates. − A significant advantage of this approach is that it preserves the ability to use standard FRET fluorophore pairs. Several contributions have explored the influence of nanophotonics for FRET using microcavities, ,− mirrors, − nanoparticles, − nanoapertures, − nanoantennas, − waveguides, or hyperbolic metamaterials. , However, none of these works has clearly demonstrated experimentally the enhancement of the smFRET detection range in the near-field. Actually, most cases consider short donor–acceptor separations (on the order or below the Förster radius) in order to ease the optical detection. ,,,,,, It should be acknowledged that long-range energy transfer over distances up to several micrometers has been reported, − but these studies are based on radiative dipole–dipole coupling ( i.e.…”

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confidence: 99%

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Extending Single-Molecule Förster Resonance Energy Transfer (FRET) Range beyond 10 Nanometers in Zero-Mode Waveguides

et al. 2019

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Single molecule Förster resonance energy transfer (smFRET) is widely used to monitor conformations and interactions dynamics at the molecular level. However, conventional smFRET measurements are ineffective at donor-acceptor distances exceeding 10 nm, impeding the studies on biomolecules of larger size. Here, we show that zero-mode waveguide (ZMW) apertures can be used to overcome the 10 nm barrier in smFRET. Using an optimized ZMW structure, we demonstrate smFRET between standard commercial fluorophores up to 13.6 nm distance with a significantly improved FRET efficiency. To further break into the classical FRET range limit, ZMWs are combined with molecular constructs featuring multiple acceptor dyes to achieve high FRET efficiencies together with high fluorescence count rates. As we discuss general guidelines for quantitative smFRET measurements inside ZMWs, the technique can be readily applied for monitoring conformations and interactions on large molecular complexes with enhanced brightness.

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Extending Single-Molecule Förster Resonance Energy Transfer (FRET) Range beyond 10 Nanometers in Zero-Mode Waveguides

et al. 2019

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“…two) metallic spherical particles. 23 Nevertheless, the challenge remains to determine the Green's tensor of complex, arbitrary, inhomogeneous, dispersive, and absorbing environments, either numerically or analytically. This problem limits the FRET rate investigations, with researchers typically resorting to effective models.…”

Section: Introductionmentioning

confidence: 99%

Overcoming the bottleneck for quantum computations of complex nanophotonic structures: Purcell and Förster resonant energy transfer calculations using a rigorous mode-hybridization method

et al. 2020

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A calculation of the photonic Green's tensor of a structure is at the heart of many photonic problems, but for non-trivial nanostructures, it is typically a prohibitively time-consuming task. Recently, a general normal mode expansion (GENOME) was implemented to construct the Green's tensor from eigenpermittivity modes. Here, we employ GENOME to the study the response of a cluster of nanoparticles. To this end, we use the rigorous mode hybridization theory derived earlier by D. J. Bergman [Phys. Rev. B 19, 2359Rev. B 19, (1979], which constructs the Green's tensor of a cluster of nanoparticles from the sole knowledge of the modes of the isolated constituent. The method is applied, for the first time, to a scatterer with a non-trivial shape (namely, a pair of elliptical wires) within a fully electrodynamic setting, and for the computation of the Purcell enhancement and Förster Resonant Energy Transfer (FRET) rate enhancement, 1 arXiv:1912.05415v1 [physics.comp-ph] 11 Dec 2019showing a good agreement with direct simulations. The procedure is general, trivial to implement using standard electromagnetic software, and holds for arbitrary shapes and number of scatterers forming the cluster. Moreover, it is orders of magnitude faster than conventional direct simulations for applications requiring the spatial variation of the Green's tensor, promising a wide use in quantum technologies, free-electron light sources and heat transfer, among others.

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“…From the excitation point of view, photonic antennas can open new energy transfer routes due to the strong confinement of the near-field becoming comparable to the donor-acceptor distance [18], whereas the modification of the LDOS can affect both, the k FRET and the decay rates of both donor and acceptor [19,20]. As a result, the two main parameters used to experimentally characterize FRET: k FRET and E FRET can be modified by the presence of the antenna [21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Nanoscale control of single molecule Förster resonance energy transfer by a scanning photonic nanoantenna

et al. 2020

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AbstractFörster Resonance Energy Transfer (FRET) is a widely applied technique in biology to accurately measure intra- and inter-molecular interactions at the nanometre scale. FRET is based on near-field energy transfer from an excited donor to a ground state acceptor emitter. Photonic nanoantennas have been shown to modify the rate, efficiency and extent of FRET, a process that is highly dependent on the near-field gradient of the antenna field as felt by the emitters, and thus, on their relative distance. However, most of the experiments reported to date focus on fixed antennas where the emitters are either immobilized or diffusing in solution, so that the distance between the antenna and the emitters cannot be manipulated. Here, we use scanning photonic nanoantenna probes to directly modulate the FRET efficiency between individual FRET pairs with an unprecedented nanometric lateral precision of 2 nm on the antenna position. We find that the antenna acts as an independent acceptor element, competing with the FRET pair acceptor. We directly map the competition between FRET and donor-antenna transfer as a function of the relative position between the antenna and the FRET donor-acceptor pair. The experimental data are well-described by FDTD simulations, confirming that the modulation of FRET efficiency is due to the spatially dependent coupling of the single FRET pair to the photonic antenna.

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Förster Energy Transfer in the Vicinity of Two Metallic Nanospheres (Dimer)

Cited by 16 publications

References 23 publications

Extending Single-Molecule Förster Resonance Energy Transfer (FRET) Range beyond 10 Nanometers in Zero-Mode Waveguides

Extending Single-Molecule Förster Resonance Energy Transfer (FRET) Range beyond 10 Nanometers in Zero-Mode Waveguides

Overcoming the bottleneck for quantum computations of complex nanophotonic structures: Purcell and Förster resonant energy transfer calculations using a rigorous mode-hybridization method

Nanoscale control of single molecule Förster resonance energy transfer by a scanning photonic nanoantenna

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