Nanopore formation dynamics during aluminum anodization

Moshe Sheintuch, Yelena Smagina*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


This paper predicts the evolution of nanopores during anodic oxidation of aluminum. The theory is based on approximate nonlinear evolution equations of the interfaces, which reproduce all the observed patterns, and using them for stability analysis. The pore structure in the early stages is described by the Damped Kuramoto-Sivashinsky (DKS) equation, which predicts hexagonal patterns with points and line defects, in agreement with experimental observations of the evolving pores. This is the first work to follow pore dynamics. Comparison with asymptotic constant-thickness and -curvature solutions is conducted.

Original languageEnglish
Pages (from-to)95-105
Number of pages11
JournalPhysica D: Nonlinear Phenomena
Issue number1
StatePublished - 1 Feb 2007
Externally publishedYes


  • Evolution equations
  • Instability
  • Kuramoto-Sivashinsky equation
  • Nanoscale pore growth
  • Pattern formation


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