ArticleNano letters2024
Fluorescence Enhancement in Topologically Optimized Gallium Phosphide All-Dielectric Nanoantennas.
Article in Nano letters, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed.
- Harnessing Interfacial Field Localization in Hexagonal GaP Mie Resonators.Nanophotonics (Berlin, Germany) · 2026Article
- Tuning the spontaneous emission of CdTe quantum dots with hybrid silicon-gold nanogaps.RSC advances · 2025Article
- Surface-enhanced spectroscopy technology based on metamaterials.Microsystems & nanoengineering · 2025Review
- A review of gallium phosphide nanophotonics towards omnipotent nonlinear devices.Nanophotonics (Berlin, Germany) · 2024Review
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Authors and funding
7 authors.
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Abstract
Nanoantennas capable of large fluorescence enhancement with minimal absorption are crucial for future optical technologies from single-photon sources to biosensing. Efficient dielectric nanoantennas have been designed, however, evaluating their performance at the individual emitter level is challenging due to the complexity of combining high-resolution nanofabrication, spectroscopy and nanoscale positioning of the emitter. Here, we study the fluorescence enhancement in infinity-shaped gallium phosphide (GaP) nanoantennas based on a topologically optimized design. Using fluorescence correlation spectroscopy (FCS), we probe the nanoantennas enhancement factor and observe an average of 63-fold fluorescence brightness enhancement with a maximum of 93-fold for dye molecules in nanogaps between 20 and 50 nm. The experimentally determined fluorescence enhancement of the nanoantennas is confirmed by numerical simulations of the local density of optical states (LDOS). Furthermore, we show that beyond design optimization of dielectric nanoantennas, increased performances can be achieved via tailoring of nanoantenna fabrication.
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