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Localized surface plasmons can modify linear optical responses of materials located in their vicinity. In particular, rare earth ions luminescence can be enhanced by gold nanoparticles. Luminescence exaltation is a complex phenomenon that depends on multiple parameters, a critical one being the coupling distance between the emitting species and the plasmonic core. An original multilayer nanostructure...
We obtained sphere-like nanoparticles Ni/Au with a core-shell structure. They are variable in size (7–14 nm of Ni nuclei) and have a narrow-size particle distribution. It was done by means of stepwise (sequential) reduction of the calibrated portions of tetrahydroborate sodium and nickel sulfate solutions. It was done under the presence of sodium citrate as a stabilizer and the combination with a...
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