Abstract
In paper the investigation results of features of electrophysical, optical and plasmonic properties changes in ultrathin metallic films during percolation transition from island structure to continuous are representative. It was shown that during Ti and Pt thin films condensation a change of their electrical conductivity above the percolation threshold is well described in the framework of the classical percolation theory. The resonance behavior of localized plasmons and surface (propagating) plasmon-polaritons in Au metal films during a percolation transition was studied. It was shown that when the film becomes to a granular state a decrease in the Q-factor of surface plasmon-polariton resonance is observed in the vicinity of the percolation transition, which is associated with excitation of localized plasmons in metallic nanoparticles. For all studied coatings the percolation threshold was determined.
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