Evolution of Liesegang patterns in an external electric field was studied numerically using a discrete stochastic model and by real experiments. In the stochastic model the diffusion was described by a Brownian random walk of discrete particles. The precipitation reaction was regarded to be a stochastic process as well, and its description was based on Ostwald's supersaturation theory. Our real experiments and the results of this stochastic approach have shown a good agreement. On the basis of our results we have proposed an extended form of the width law, which takes into account the effect of constant electric field.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Physical and Theoretical Chemistry