Coarsening of precipitation patterns in a moving reaction-diffusion front.

  title={Coarsening of precipitation patterns in a moving reaction-diffusion front.},
  author={A. Volford and I. Lagzi and F. Moln{\'a}r and Z. R{\'a}cz},
  journal={Physical review. E, Statistical, nonlinear, and soft matter physics},
  volume={80 5 Pt 2},
  • A. Volford, I. Lagzi, +1 author Z. Rácz
  • Published 2009
  • Materials Science, Medicine, Physics
  • Physical review. E, Statistical, nonlinear, and soft matter physics
Precipitation patterns emerging in a two-dimensional moving front are investigated on the example of NaOH diffusing into a gel containing AlCl3 . The time evolution of the precipitate Al(OH)_{3} can be observed since the precipitate redissolves in the excess outer electrolyte NaOH and thus it exists only in a narrow optically accessible region of the reaction front. The patterns display self-similar coarsening with a characteristic length xi increasing with time as xi(t) approximately sqrt[t… Expand

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