Phase separation dynamics in a concentration gradient

A. M. Lacasta, J. M. Sancho, C. Yeung

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

Phase separation dynamics with an initially nonuniform concentration are studied. Critical and off-critical behavior is observed simultaneously. A mechanism for an expanding phase-separated region is demonstrated and the time dependence of the concentration is determined. The final equilibrium state consists of a planar interface separating one phase from the other. The evolution to this state is characterized by an experimentally observable flux, j, crossing this interface. We find that j∼t−2/3 if patterns are formed in the bulk and j∼t−1/2 if the bulk remains homogeneous. The results are explained in terms of scaling arguments which are confirmed numerically.

Original languageEnglish (US)
Pages (from-to)291-297
Number of pages7
JournalEPL
Volume27
Issue number4
DOIs
StatePublished - Aug 1 1994

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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