Floris, F.; Angelini, M.; Manobianco, E.; Pellacani, P.; Tolardo, V.; Marabelli, F. Angle-Resolved Fluorescence of a Dye Coupled to a Plasmonic Nanohole Array. Appl. Sci.2024, 14, 3574.
Floris, F.; Angelini, M.; Manobianco, E.; Pellacani, P.; Tolardo, V.; Marabelli, F. Angle-Resolved Fluorescence of a Dye Coupled to a Plasmonic Nanohole Array. Appl. Sci. 2024, 14, 3574.
Floris, F.; Angelini, M.; Manobianco, E.; Pellacani, P.; Tolardo, V.; Marabelli, F. Angle-Resolved Fluorescence of a Dye Coupled to a Plasmonic Nanohole Array. Appl. Sci.2024, 14, 3574.
Floris, F.; Angelini, M.; Manobianco, E.; Pellacani, P.; Tolardo, V.; Marabelli, F. Angle-Resolved Fluorescence of a Dye Coupled to a Plasmonic Nanohole Array. Appl. Sci. 2024, 14, 3574.
Abstract
Gold nanohole arrays are periodic metastructures gathering huge interest for biosensing applica-tions. The grating-like structure defines their plasmonic mode features and their angular disper-sion can be used to highlight efficiently their interaction with the fluorescence emission of a properly tuned fluorophore. Resorting to a properly tuned/engineered/optimised plasmonic na-nohole array and a commercial organic dye, we performed an accurate resolved angle-resolved optical characterization. The plasmonic fingerprints was consequently identified as a modification of the dye photoluminescence signal in terms of both spectral redistribution and enhancement. Interestingly, by analyzing the results, an advantageous measurement configuration can be iden-tified to better engineer a suitable platform for efficiency maximization in plasmon-enhanced flu-orescence-based applications. Therefore, the coupling mechanism with the plasmonic modes, and nanostructure properties can be carefully co-optimized.
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