CONICET | Buscador de Institutos y Recursos Humanos

The scattering properties of multipole plasmon resonances sustained by silver and gold nanorods (NRs) areinvestigated using classical electrodynamics DDA (discrete dipole approximation) simulations. The angulardistribution of the scattered light is examined as a function of the multipole order, NR length, noble metalnature, and dielectric environment. For a given multipole order, the dependence of the differential scatteringcross section on the different variables is rationalized in terms of two different contributions to the differentialscattering cross sections: the resonant wavelength and the Mueller matrix element S11. It was found that themagnitude of S11 for a given multipole order is mainly determined by its quantum scattering yield. By comparingthe scattering patterns of finite cylinders with the radiation scattered by a point light source, it was possibleto characterize and gain physical insight on the different resonance modes.