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Fractal structures of gold obtained by diffusion limited aggregation in alkali halide crystals

M. ENCULESCU1,* , I. ENCULESCU1, V. TOPA2

Affiliation

  1. National Institute for Materials Physics, PO Box MG-7, 077125, Magurele-Bucharest, Romania
  2. Center for Advanced Studies in Physics of the Romanian Academy, 13 Septembrie Street, No. 13, Bucharest, Romania

Abstract

Nanostructures of gold embedded in potassium chloride matrices were obtained after the doped crystals growth, by electrolytical colouring, and by thermal treatment. When the TEM images of the nanostructures were analyzed using fractal geometry it means was proved that the self assembling of the metallic structures is governed by the diffusion limited aggregation (DLA) mechanism. The values of the fractal dimension, which were in all cases between 1.7 and 1.9, calculated using two methods, sandbox and box-counting, proved the DLA mechanism..

Keywords

Fractal geometry, Metal structures, Alkali halides.

Submitted at: March 9, 2006
Accepted at: May 18, 2006

Citation

M. ENCULESCU, I. ENCULESCU, V. TOPA, Fractal structures of gold obtained by diffusion limited aggregation in alkali halide crystals, Journal of Optoelectronics and Advanced Materials Vol. 8, Iss. 3, pp. 1230-1233 (2006)