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5 results on '"De Luca, Antonio"'

2. A proposal for the reference intervals of the Italian microbiota “scaffold” in healthy adults

Author

Sisti, Davide, Pazienza, Valerio, Piccini, Fabio, Citterio, Barbara, Baffone, Wally, Donati Zeppa, Sabrina, Biavasco, Francesca, Prospero, Emilia, De Luca, Antonio, Artico, Marco, Taurone, Samanta, Minelli, Andrea, Perri, Francesco, Binda, Elena, Pracella, Riccardo, Santolini, Riccardo, Amatori, Stefano, Sestili, Piero, Rocchi, Marco B. L., and Gobbi, Pietro

Published
2022
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5. Large spontaneous emission rate enhancement in grating coupled hyperbolic metamaterials.

Author

Valiyaveedu Sreekanth, Kandammathe, Hari Krishna, Koduru, De Luca, Antonio, and Strangi, Giuseppe

Subjects
METAMATERIALS, ORGANIC dyes, COMPUTER simulation, DIFFRACTION gratings, ANGULAR dispersion, LASER transitions
Abstract

Hyperbolic metamaterial (HMM), a sub-wavelength periodic artificial structure with hyperbolic dispersion, can enhance the spontaneous emission of quantum emitters. Here, we demonstrate the large spontaneous emission rate enhancement of an organic dye placed in a grating coupled hyperbolic metamaterial (GCHMM). A two-dimensional (2D) silver diffraction grating coupled with an Ag/Al2O3 HMM shows 18-fold spontaneous emission decay rate enhancement of dye molecules with respect to the same HMM without grating. The experimental results are compared with analytical models and numerical simulations, which confirm that the observed enhancement of GCHMM is due to the outcoupling of non-radiative plasmonic modes as well as strong plasmon-exciton coupling in HMM via diffracting grating. [ABSTRACT FROM AUTHOR]

Published
2014
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