arXiv subjects

Leonid G. Grechko

Publications and source records attributed to Leonid G. Grechko.

2 recordsLinked to original sources

arXiv2009

Size-dependent effects in solutions of small metal nanoparticles

A new theoretical approach for the calculation of optical properties of complex solutions is proposed. It is based on a dielectric matrix with included small metallic inclusions (less than 3 nm) of spherical shape. We take into account the mutual interactions between the inclusions and the quantum finite-size effects. On the basis of the effective medium model, TDLDA and Kohn-Sham theories, some analytical expressions for the effective dielectric permittivity of the solution are obtained.

cond-mat.soft↗

arXiv2000

Dielectric function of aggregates of small metallic particles embedded in host insulating matrix

The optical properties of clusters with metallic spherical particles embedded in an insulating matrix are studied. A theoretical approach is proposed for the calculation of the macroscopic dielectric response for a collection of spheres at random positions embedded in a homogeneous medium. While accounting for the dipole interaction between particles, we have considered the frequency dependence behavior of the imaginary part of the effective dielectric constant in this system with two kinds of particles of different sizes.

cond-mat.soft↗