Volume 41, Number 1, January I 1998
|Page(s)||61 - 66|
|Section||Cross-disciplinary physics and related areas of science and technology|
|Published online||01 September 2002|
Periodic roughening transitions in diffusion-limited growth
National Laboratory of Solid State Microstructures, Nanjing
University Nanjing 210093, China
Center for Advanced Studies of Science and Technology
of Microstructures, Nanjing 210093, China
2 Department of Solid State Chemistry, University of Nijmegen, 6525 ED Nijmegen, The Netherlands
Accepted: 17 November 1997
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 grown in agarose gel. The experiments show that the period of the roughening transitions depends on both 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.
PACS: 81.10.Aj – Theory and models of crystal growth; physics of crystal growth, crystal morphology and orientation / 68.35.Ct – Interface structure and roughness / 05.70.Fh – Phase transitions: general aspects
© EDP Sciences, 1998
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