Gain functionalized core–shell nanoparticles: the way to selectively compensate absorptive losses

Luca, Antonio De; Mélanie, F; Ravaine, Serge; Deda, Massimo La; Infusino, Melissa; Rashed, Alireza R.; Veltri, Alessandro; Aradian, Ashod; Scaramuzza, Nicola; Strangi, Giuseppe

doi:10.1039/c2jm30341h

Cited by 33 publications

(35 citation statements)

References 29 publications

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“…Figure 6: Time-resolved fluorescence intensity decays and corresponding fits of (a) GF-C500 and (b) GF-DCM systems in comparison to pure dye solutions of C500 and DCM, respectively. Reprinted with permission from [77]. is one main reason why, as mentioned earlier, the EPRET depends on the geometry and configuration of the hybrid nanostructure.…”

Section: Active Plasmonic Multimeric Systemsmentioning

confidence: 95%

“…Another important study [77] utilizes gain functionalization approach in order to control for the concentration and the average distance separation between dye molecules and plasmonic NPs in order to probe other parameters. In this study two different dyes C500 and DCM that have different spectral overlap with the plasmon band, ( Figure 5) were used to decorate gold core/silica shell nanoparticles to create two gain-functionalized systems of GF-DCM and GF-C500.…”

Section: Gain-functionalized and Gain-assisted Plasmonic Systemsmentioning

confidence: 99%

“…2 is the chi-square function which shows the goodness of the applied fit. Reprinted with permission from [77]. Figure 6: Time-resolved fluorescence intensity decays and corresponding fits of (a) GF-C500 and (b) GF-DCM systems in comparison to pure dye solutions of C500 and DCM, respectively.…”

Section: Active Plasmonic Multimeric Systemsmentioning

confidence: 99%

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Plasmon-Exciton Resonant Energy Transfer: Across Scales Hybrid Systems

Kabbash

Rashed

Sreekanth

et al. 2016

Journal of Nanomaterials

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The presence of an excitonic element in close proximity of a plasmonic nanostructure, under certain conditions, may lead to a nonradiative resonant energy transfer known as Exciton Plasmon Resonant Energy Transfer (EPRET) process. The exciton-plasmon coupling and dynamics have been intensely studied in the last decade; still many relevant aspects need more in-depth studies. Understanding such phenomenon is not only important from fundamental viewpoint, but also essential to unlock many promising applications. In this review we investigate the plasmon-exciton resonant energy transfer in different hybrid systems at the nano- and mesoscales, in order to gain further understanding of such processes across scales and pave the way towards active plasmonic devices.

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Section: Active Plasmonic Multimeric Systemsmentioning

confidence: 95%

Section: Gain-functionalized and Gain-assisted Plasmonic Systemsmentioning

confidence: 99%

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Plasmon-Exciton Resonant Energy Transfer: Across Scales Hybrid Systems

Kabbash

Rashed

Sreekanth

et al. 2016

Journal of Nanomaterials

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“…In this context, theoretical and experimental studies suggest that bringing gain close to plasmonic nanostructures can be a potential solution to solve this challenging issue [3,[22][23][24]. In our former studies, we have successfully demonstrated various loss compensated systems in solutions at nano-and meso-scales, including both gain-functionalized (dye encapsulated into silica shell) and gain assisted (dye dispersed in solution of metal NPs) plasmonic structures [25][26][27][28][29]. However, the evaporation of host solvents can alter gain concentration around plasmonic elements as well as overall concentrations of the systems, affecting the plexcitonic coupling and eventually the loss compensation mechanism.…”

Section: Introductionmentioning

confidence: 95%

Broadband optical transparency in plasmonic nanocomposite polymer films via exciton-plasmon energy transfer

et al. 2016

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Inherent absorptive losses affect the performance of all plasmonic devices, limiting their fascinating applications in the visible range. Here, we report on the enhanced optical transparency obtained as a result of the broadband mitigation of optical losses in nanocomposite polymeric films, embedding core-shell quantum dots (CdSe@ZnS QDs) and gold nanoparticles (Au-NPs). Exciton-plasmon coupling enables non-radiative energy transfer processes from QDs to metal NPs, resulting in gain induced transparency of the hybrid flexible systems. Experimental evidences, such as fluorescence quenching and modifications of fluorescence lifetimes confirm the presence of this strong coupling between plexcitonic elements. Measures performed by means of an ultra-fast broadband pump-probe setup demonstrate loss compensation of gold NPs dispersed in plastic network in presence of gain. Furthermore, we compare two films containing different concentrations of gold NPs and same amount of QDs, to investigate the role of acceptor concentration (Au-NPs) in order to promote an effective and efficient energy transfer mechanism. Gain induced transparency in bulk systems represents a promising path towards the realization of loss compensated plasmonic devices.

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“…week ending 11 MARCH 2016 0031-9007=16=116(10)=103002 (6) 103002-1 © 2016 American Physical Society systems with respect to the usual approach employing gain media [25][26][27][28][29]. We have investigated the optical response of a 3 × 3 mm 2 square array of aluminum nanopyramids fabricated onto a silica substrate using substrate conformal imprint lithography [30].…”

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confidence: 99%

Coherent Control of the Optical Absorption in a Plasmonic Lattice Coupled to a Luminescent Layer

et al. 2016

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We experimentally demonstrate the coherent control, i.e., phase-dependent enhancement and suppression, of the optical absorption in an array of metallic nanoantennas covered by a thin luminescent layer. The coherent control is achieved by using two collinear, counter-propagating and phase-controlled incident waves with wavelength matching the absorption spectrum of dye molecules coupled to the array. Symmetry arguments shed light on the relation between the relative phase of the incident waves and the excitation efficiency of the optical resonances of the system. This coherent control is associated with a phase-dependent distribution of the electromagnetic near-fields in the structure which enables a significant reduction of the unwanted dissipation in the metallic structures.

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Gain functionalized core–shell nanoparticles: the way to selectively compensate absorptive losses

Cited by 33 publications

References 29 publications

Plasmon-Exciton Resonant Energy Transfer: Across Scales Hybrid Systems

Plasmon-Exciton Resonant Energy Transfer: Across Scales Hybrid Systems

Broadband optical transparency in plasmonic nanocomposite polymer films via exciton-plasmon energy transfer

Coherent Control of the Optical Absorption in a Plasmonic Lattice Coupled to a Luminescent Layer

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