Fluorescence triggered by radioactive β decay in optimized hyperbolic cavities Journal Article
| Authors: | Abad-Arredondo, J.; García-Vidal, F. J.; Zhang, Q.; Khwaja, E.; Menon, V. M.; Grimm, J.; Fernández-Domínguez, A. I. |
| Article Title: | Fluorescence triggered by radioactive β decay in optimized hyperbolic cavities |
| Abstract: | Luminescence arising from β decay of radiotracers has attracted much interest recently as a viable in vivo imaging technique. The emitted Cerenkov radiation can be directly detected by high-sensitivity cameras or used to excite highly efficient fluorescent dyes. Here we investigate the enhancement of visible and infrared emission driven by β decay of radioisotopes in the presence of a hyperbolic nanocavity. By means of a transfer-matrix approach, we obtain quasianalytic expressions for the fluorescence-enhancement factor at the dielectric core of the metalodielectric cavity, and report a 100-fold amplification in periodic structures. A particle-swarm optimization of the layered shell geometry reveals that enhancement of up to 10000-fold is possible because of the hybridization and spectral overlap of whispering-gallery and localized-plasmon modes. Our findings may find application in nuclear-optical medical imaging, as they provide a strategy for the use of highly energetic gamma rays, Cerenkov luminescence, and visible and near-infrared fluorescence through the same nanotracer. © 2020 American Physical Society. |
| Keywords: | fluorescence; medical imaging; infrared devices; gamma rays; cerenkov radiation; particle swarm optimization (pso); visible and near infrared; transfer matrix method; fluorescence enhancement; infrared emissions; localized plasmons; optical medical imaging; transfer matrix approach; whispering gallery; whispering gallery modes |
| Journal Title: | Physical Review Applied |
| Volume: | 14 |
| Issue: | 2 |
| ISSN: | 2331-7019 |
| Publisher: | American Physical Society |
| Date Published: | 2020-08-01 |
| Start Page: | 024084 |
| Language: | English |
| DOI: | 10.1103/PhysRevApplied.14.024084 |
| PROVIDER: | scopus |
| PUBMED: | 34859117 |
| PMCID: | PMC8635087 |
| DOI/URL: | |
| Notes: | Article -- Export Date: 2 November 2020 -- Source: Scopus |
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