Periodic roughening transitions in diffusion-limited growth

Mu Wang*, Xiao Yong Lui, Cheng Sun, Nai Ben Ming, P. Bennema, W. J P Van Enckevort

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


By interference contrast microscopy and atomic-force microscopy, we observed for the first time a periodic roughening transition occurring on the surface of crystal aggregates of NH4Cl grown in agarose gel. The experiments show that the period of the roughening transitions depends on both NH4Cl concentration and agarose gel density. We suggest that this phenomenon arises from the competition of the interfacial growth and the nutrient transfer, a common but usually ignored effect in many growth systems.

Original languageEnglish (US)
Pages (from-to)61-66
Number of pages6
JournalEurophysics Letters
Issue number1
StatePublished - Jan 1 1998

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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