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8 results on '"Gigli, Giuseppe"'

1. Probing Single-Cell Fermentation Fluxes and Exchange Networks via pH-Sensing Hybrid Nanofibers

Author

Onesto, Valentina, primary, Forciniti, Stefania, additional, Alemanno, Francesco, additional, Narayanankutty, Krishnadev, additional, Chandra, Anil, additional, Prasad, Saumya, additional, Azzariti, Amalia, additional, Gigli, Giuseppe, additional, Barra, Adriano, additional, De Martino, Andrea, additional, De Martino, Daniele, additional, and del Mercato, Loretta L., additional

Published
2022
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3. Quantum Nature of Light in Nonstoichiometric Bulk Perovskites

Author

Suárez-Forero, Daniel G., primary, Giuri, Antonella, additional, De Giorgi, Milena, additional, Polimeno, Laura, additional, De Marco, Luisa, additional, Todisco, Francesco, additional, Gigli, Giuseppe, additional, Dominici, Lorenzo, additional, Ballarini, Dario, additional, Ardizzone, Vincenzo, additional, Belviso, Benny D., additional, Altamura, Davide, additional, Giannini, Cinzia, additional, Brescia, Rosaria, additional, Colella, Silvia, additional, Listorti, Andrea, additional, Esposito Corcione, Carola, additional, Rizzo, Aurora, additional, and Sanvitto, Daniele, additional

Published
2019
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4. Toward Cavity Quantum Electrodynamics with Hybrid Photon Gap-Plasmon States

Author

Todisco, Francesco, primary, Esposito, Marco, additional, Panaro, Simone, additional, De Giorgi, Milena, additional, Dominici, Lorenzo, additional, Ballarini, Dario, additional, Fernández-Domínguez, Antonio I., additional, Tasco, Vittorianna, additional, Cuscunà, Massimo, additional, Passaseo, Adriana, additional, Ciracì, Cristian, additional, Gigli, Giuseppe, additional, and Sanvitto, Daniele, additional

Published
2016
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5. Exciton–Plasmon Coupling Enhancement via Metal Oxidation

Author

Todisco, Francesco, primary, D’Agostino, Stefania, additional, Esposito, Marco, additional, Fernández-Domínguez, Antonio I., additional, De Giorgi, Milena, additional, Ballarini, Dario, additional, Dominici, Lorenzo, additional, Tarantini, Iolena, additional, Cuscuná, Massimo, additional, Della Sala, Fabio, additional, Gigli, Giuseppe, additional, and Sanvitto, Daniele, additional

Published
2015
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7. Exciton–Plasmon Coupling Enhancement viaMetal Oxidation

Author

Todisco, Francesco, D’Agostino, Stefania, Esposito, Marco, Fernández-Domínguez, Antonio I., De Giorgi, Milena, Ballarini, Dario, Dominici, Lorenzo, Tarantini, Iolena, Cuscuná, Massimo, Della Sala, Fabio, Gigli, Giuseppe, and Sanvitto, Daniele

Abstract

In this paper, we report on the effect of metal oxidation on strong coupling interactions between silver nanostructures and a J-aggregated cyanine dye. We show that metal oxidation can sensibly affect the plexcitonic system, inducing a change in the coupling strength. In particular, we demonstrate that the presence of oxide prevents the appearance of Rabi splitting in the extinction spectra for thick spacers. In contrast, below a threshold percentage, the oxide layer results in an higher coupling strength between the plasmon and the Frenkel exciton. Contrary to common belief, a thin oxide layer seems thus to act, under certain conditions, as a coupling mediator between an emitter and a localized surface plasmon excited in a metallic nanostructure. This suggests that metal oxidation can be exploited as a means to enhance light–matter interactions in strong coupling applications.

Published
2015
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8. Toward Cavity Quantum Electrodynamics with Hybrid Photon Gap-Plasmon States

Author

Francesco Todisco, Antonio I. Fernández-Domínguez, Cristian Ciracì, Giuseppe Gigli, Milena De Giorgi, Marco Esposito, Dario Ballarini, Simone Panaro, Daniele Sanvitto, A. Passaseo, Vittorianna Tasco, Lorenzo Dominici, Massimo Cuscunà, Todisco, Francesco, Esposito, Marco, Panaro, Simone, DE GIORGI, Milena, Dominici, Lorenzo, Ballarini, Dario, Fernández Domínguez, Antonio I, Tasco, Vittorianna, Cuscuna', Massimo, Passaseo, Adriana, Ciracì, Cristian, Gigli, Giuseppe, and Sanvitto, Daniele

Subjects
Materials science, Photon, Physics::Optics, General Physics and Astronomy, 02 engineering and technology, 01 natural sciences, plasmon, Lattice (order), 0103 physical sciences, plexciton, surface lattice resonance, General Materials Science, 010306 general physics, Quantum, Plasmon, Condensed matter physics, General Engineering, Cavity quantum electrodynamics, 021001 nanoscience & nanotechnology, plasmon-exciton-polariton, Surface wave, aluminum, plasmonic crystal, Q factor, 0210 nano-technology, Localized surface plasmon
Abstract

Combining localized surface plasmons (LSPs) and diffractive surface waves (DSWs) in metallic nanoparticle gratings leads to the emergence of collective hybrid plasmonic-photonic modes known as surface lattice resonances (SLRs). These show reduced losses and therefore a higher Q factor with respect to pure LSPs, at the price of larger volumes. Thus, they can constitute a flexible and efficient platform for light-matter interaction. However, it remains an open question if there is, in terms of the Q/V ratio, a sizable gain with respect to the uncoupled LSPs or DSWs. This is a fundamental point to shed light upon if such modes want to be exploited, for instance, for cavity quantum electrodynamic effects. Here, using aluminum nanoparticle square gratings with unit cells consisting of narrow-gap disk dimers-a geometry featuring a very small modal volume-we demonstrate that an enhancement of the Q/V ratio with respect to the pure LSP and DSW is obtained for SLRs with a well-defined degree of plasmon hybridization. Simultaneously, we report a 5× increase of the Q/V ratio for the gap-coupled LSP with respect to that of the single nanoparticle. These outcomes are experimentally probed against the Rabi splitting, resulting from the coupling between the SLR and a J-aggregated molecular dye, showing an increase of 80% with respect to the DSW-like SLR sustained by the disk LSP of the dimer. The results of this work open the way toward more efficient applications for the exploitation of excitonic nonlinearities in hybrid plasmonic platforms.

Published
2016

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