Open AccessInfluence of Shape Spread in an Ensemble of Metal Nanoparticles on Their Optical Properties
Author(s) -
P. M. Tomchuk,
V. N. Starkov
Publication year - 2018
Publication title -
ukrainian journal of physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.213
H-Index - 17
eISSN - 2071-0194
pISSN - 2071-0186
DOI - 10.15407/ujpe63.3.204
Subject(s) - nanoparticle , materials science , polar , basis (linear algebra) , diagonal , tensor (intrinsic definition) , depolarization , dissipative system , work (physics) , electron , molecular physics , basis function , metal , condensed matter physics , physics , computational physics , nanotechnology , thermodynamics , geometry , quantum mechanics , mathematics , medicine , endocrinology , metallurgy
The theoretical basis of the work consists in that the dissipative processes in non-spherical nanoparticles, whose sizes are smaller than the mean free path of electrons, are characterized by a tensor quantity, whose diagonal elements together with the depolarization coefficients determine the half-widths of plasma resonances. Accordingly, the averaged characteristics are obtained for an ensemble of metal nanoparticles with regard for the influence of the nanoparticle shape on the depolarization coefficients and the components of the optical conductivity tensor. Three original variants of the nanoparticle shape distribution function are proposed on the basis of the joint application of the Gauss and “cap” functions.