A CCA model for gelation process in silica systems

K. Ohno, X. Hu, Y. Kawazoe

Research output: Contribution to journalArticlepeer-review


We propose a new cluster-cluster aggregation model which includes the expected complex reaction process near the sol-gel transition of a SiO2 system. This model explains the experimental fact that the fractal dimension of the silica-gel shows an interesting dependence on the amount of the water solvent. We also give a simple analytic result using mean-field theory.

Original languageEnglish
Pages (from-to)77-82
Number of pages6
JournalScience Reports of the Rerearch Institutes Tohoku University Series A-Physics
Issue number1
Publication statusPublished - 1997


  • Cluster-cluster-aggregation model
  • Silica
  • Sol-gel transition


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