研究目的
Investigating the potential of dyed dielectric-metal core-shell resonators as efficient fluorescent labels with narrow emission peaks and tunability for applications in cell biology and medical sciences.
研究成果
The dyed dielectric-metal core-shell resonators demonstrate multiple environmentally insensitive emission peaks with narrow linewidths and precise tunability, making them potential efficient fluorescent labels for applications in cell biology and medical sciences.
研究不足
The physical size of the dyed DMCSRs (1.02-μm-diameter) is much larger than that of dyes and quantum dots, which may limit their application in certain biological contexts.
1：Experimental Design and Method Selection:
The study utilizes the near-field coupling between dyes and multipolar sharp cavity plasmon resonances in dyed dielectric-metal core-shell resonators.
2：Sample Selection and Data Sources:
Monodispersed red-fluorescent dyed-PS microspheres with a diameter of
3：02 μm were used. List of Experimental Equipment and Materials:
A 514 nm diode laser, grating spectrometer, scanning electron microscopy (SEM), transmission electron microscopy (TEM), and focused ion beam (FIB) were employed.
4：Experimental Procedures and Operational Workflow:
Dyed-PS microspheres were coated with a nearly-complete silver shell, and their photoluminescence (PL) spectra were measured.
5：Data Analysis Methods:
The spectral positions of cavity plasmon resonances were identified using Mie theory, and the field intensity distributions were analyzed.
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