Home – Home – Jornals – Avtometriya 2024 number 1

Resonance properties of the local field of metal fractal clusters are considered. The effects of surface-enhanced Raman scattering, photoluminescence enhancement, and nonlinear responses are studied. It is demonstrated that the model developed by S. G. Rautian, based on the quantum theory of nonlinearity, offers a more accurate description than previous theories. Among the scientific results of the theory proposed by Rautian and his team, the following points can be highlighted: metal nanoparticles with a diameter < 30 nm exhibit discrete energy levels, in contrast to semiconductor quantum dots; Rautian’s theory provides an accurate description of the linear part of the dielectric function, corresponding to the classical Drude model; the cubic nonlinear susceptibility according to Rautian’s model is consistent with experiments, indicating the contribution of conduction electrons.