Crossover between Spatially Confined Precipitation and Periodic Pattern Formation in Reaction Diffusion Systems

E. López Cabarcos, Chein-Shiu Kuo, A. Scala, and R. Bansil
Phys. Rev. Lett. 77, 2834 – Published 23 September 1996
PDFExport Citation

Abstract

We have observed a crossover between a spatially confined precipitation regime and periodic pattern formation regime. This unusual behavior was observed when electrolyte solutions of Na2HPO4 and CaCl2 were allowed to diffuse into an agarose gel from opposite ends. The formation of the confined precipitate occurs when the electrolyte flux J is the same at both sides of the gel. The time of formation and the width of the precipitate are a function of J and both follow the scaling relation ω(J/D)β with β=0.40±0.2 and D the diffusion coefficient. The growth of periodic bands of precipitate was observed when J was different at both gel ends.

  • Received 19 June 1996

DOI:https://doi.org/10.1103/PhysRevLett.77.2834

©1996 American Physical Society

Authors & Affiliations

E. López Cabarcos1, Chein-Shiu Kuo2, A. Scala1, and R. Bansil1

  • 1Center for Polymer Studies, Department of Physics, Boston University, Boston, Massachusetts 02215
  • 2Department of Chemistry, Boston University, Boston, Massachusetts 02215

References (Subscription Required)

Click to Expand
Issue

Vol. 77, Iss. 13 — 23 September 1996

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×