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Fluorescence intensity is vital for fluorescence sensing and imaging because it determines the sensing sensitivity and imaging brightness. This study reports plasmon-enhanced fluorescence by engineering plasmonic nanostructures, that are SiO2-coated Au nanoshell dimers with a high yield exceeding 60 %. With this elaborately designed nanostructure, we show that the thin SiO2 shell can conveniently...
Surface plasmon resonance-based optical properties for gold nanovoid arrays were analyzed using three-dimensional finite-difference time-domain method, revealing that two asymmetric Fano resonances, with extremely low reflectivity and narrow line width, are caused by the strong interference between localized quadrupolar and hexadecapolar modes and propagating surface plasmon mode. The two Fano resonances...
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