Peer-reviewed veterinary case report
Plasmonic Copper Nanocubes Coupled to a Film for Near-Infrared Fluorescence Enhancement.
- Year:
- 2025
- Authors:
- Zheng P et al.
- Affiliation:
- Department of Mechanical and Aerospace Engineering · United States
Abstract
Cu nanocubes have been found to support a strong and narrow localized surface plasmon resonance (LSPR) but are restrained by limited spectral tunability. In this study, a film-coupled Cu nanocube system is designed and systematically studied using finite-difference time-domain based numerical simulations. Because of the coupling between the Cu nanocube and the underlying film, a plasmonic cavity mode is generated and featured by a spectrally tunable LSPR and an intense near field. By tailoring the resonance to the near-infrared (NIR) wavelength region, we demonstrate that the film-coupled Cu nanocube system supports a large NIR fluorescence emission enhancement owing to the strong excitation rate enhancement and the quantum efficiency enhancement. The knowledge obtained in this study can guide future design of low-cost Cu-based optical devices.
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Search related cases →Original publication: https://europepmc.org/article/MED/41098948