Fluorescence Emission Triggered by Radioactive β decay in Optimized Hyperbolic Cavities.

ABSTRACT: Luminescence arising from β -decay of radiotracers has garnered 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 quasi-analytic expressions for the fluorescence enhancement factor at the dielectric core of the metalodielectric cavity, reporting a hundred-fold amplification in periodic structures. A particle swarm optimization of the layered shell geometry reveals that up to a ten-thousand-fold enhancement is possible thanks to the hybridization a

SUBMITTER: Abad-Arredondo J 

PROVIDER: S-EPMC8635087 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature