Fluorescence Enhancement Dependence on Refractive Index Variation in a Nanostructured Plasmonic Surface
Nanostructured plasmonic surfaces have been the subject of many biosensing applications exploiting surface-enhanced fluorescence in the last few years. For this reason, we investigated the refractive index dependence of the coupling mechanism between the plasmonic modes and the fluorescence processe...
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| Format: | Article |
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MDPI AG
2023-05-01
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| Series: | Materials Proceedings |
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| Online Access: | https://www.mdpi.com/2673-4605/14/1/41 |
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| author | Francesco Floris Margherita Angelini Eliana Manobianco Paola Pellacani Franco Marabelli |
| author_facet | Francesco Floris Margherita Angelini Eliana Manobianco Paola Pellacani Franco Marabelli |
| author_sort | Francesco Floris |
| collection | DOAJ |
| description | Nanostructured plasmonic surfaces have been the subject of many biosensing applications exploiting surface-enhanced fluorescence in the last few years. For this reason, we investigated the refractive index dependence of the coupling mechanism between the plasmonic modes and the fluorescence processes. The results show that the fluorescence emission spectral shape is controlled by the plasmonic field distribution, together with the enhancement of its signal. By altering the refractive index at the plasmonic active surface, the resonance conditions of the plasmonic modes change, resulting in a reshaping of fluorescence emission and a different spectral distribution of the largest enhancement regions. |
| first_indexed | 2024-03-10T22:30:26Z |
| format | Article |
| id | doaj.art-db1dd64ef5d845a3ad0bb1783793fd77 |
| institution | Directory Open Access Journal |
| issn | 2673-4605 |
| language | English |
| last_indexed | 2024-03-10T22:30:26Z |
| publishDate | 2023-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials Proceedings |
| spelling | doaj.art-db1dd64ef5d845a3ad0bb1783793fd772023-11-19T11:46:55ZengMDPI AGMaterials Proceedings2673-46052023-05-011414110.3390/IOCN2023-14529Fluorescence Enhancement Dependence on Refractive Index Variation in a Nanostructured Plasmonic SurfaceFrancesco Floris0Margherita Angelini1Eliana Manobianco2Paola Pellacani3Franco Marabelli4Department of Physics, University of Pavia, Via Bassi 6, 27100 Pavia, ItalyDepartment of Physics, University of Pavia, Via Bassi 6, 27100 Pavia, ItalyPlasmore S.r.l, Via Vittorio Emanuele II 4, 27100 Pavia, ItalyPlasmore S.r.l, Via Vittorio Emanuele II 4, 27100 Pavia, ItalyDepartment of Physics, University of Pavia, Via Bassi 6, 27100 Pavia, ItalyNanostructured plasmonic surfaces have been the subject of many biosensing applications exploiting surface-enhanced fluorescence in the last few years. For this reason, we investigated the refractive index dependence of the coupling mechanism between the plasmonic modes and the fluorescence processes. The results show that the fluorescence emission spectral shape is controlled by the plasmonic field distribution, together with the enhancement of its signal. By altering the refractive index at the plasmonic active surface, the resonance conditions of the plasmonic modes change, resulting in a reshaping of fluorescence emission and a different spectral distribution of the largest enhancement regions.https://www.mdpi.com/2673-4605/14/1/41fluorescencesurface plasmon resonanceelectric field coupling mechanismoptical characterizationFDTD simulation |
| spellingShingle | Francesco Floris Margherita Angelini Eliana Manobianco Paola Pellacani Franco Marabelli Fluorescence Enhancement Dependence on Refractive Index Variation in a Nanostructured Plasmonic Surface Materials Proceedings fluorescence surface plasmon resonance electric field coupling mechanism optical characterization FDTD simulation |
| title | Fluorescence Enhancement Dependence on Refractive Index Variation in a Nanostructured Plasmonic Surface |
| title_full | Fluorescence Enhancement Dependence on Refractive Index Variation in a Nanostructured Plasmonic Surface |
| title_fullStr | Fluorescence Enhancement Dependence on Refractive Index Variation in a Nanostructured Plasmonic Surface |
| title_full_unstemmed | Fluorescence Enhancement Dependence on Refractive Index Variation in a Nanostructured Plasmonic Surface |
| title_short | Fluorescence Enhancement Dependence on Refractive Index Variation in a Nanostructured Plasmonic Surface |
| title_sort | fluorescence enhancement dependence on refractive index variation in a nanostructured plasmonic surface |
| topic | fluorescence surface plasmon resonance electric field coupling mechanism optical characterization FDTD simulation |
| url | https://www.mdpi.com/2673-4605/14/1/41 |
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