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The optical properties of dielectric core-metallic concentric shell nanoparticles show a highly sensitive dependence on geometrical parameters of the system. It is due to the strong interaction between plasmon modes excited on the surfaces of the metallic shell. Perturbations in the symmetries of the system modify these interactions and enable new ones, giving rise to dramatic variations in the far...
In this work, we show theoretical results of the behaviour of the extinction cross section as a function of the incident wavelength for metallic nanotubes (Nts) with a 2D core–shell structure. To calculate the optical response of the gold, silver and cooper system, an exact integral formalism is implemented. The method is based on Green’s integral theorem, and it allows us to compute the electromagnetic...
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