Fractal Dimension of Alumina Aggregates Grown in Two Dimensions
作者:
Judith L. LaRosa,
James D. Cawley,
期刊:
Journal of the American Ceramic Society
(WILEY Available online 1992)
卷期:
Volume 75,
issue 7
页码: 1981-1984
ISSN:0002-7820
年代: 1992
DOI:10.1111/j.1151-2916.1992.tb07228.x
出版商: Blackwell Publishing Ltd
关键词: alumina;aggregates;fractals;geometry;suspension
数据来源: WILEY
摘要:
The concepts of fractal geometry are applied to the analysis of 0.4‐μm alumina constrained to agglomerate in two dimensions. Particles were trapped at the bottom surface of a drop of a dilute suspension, and the agglomeration process was directly observed, using an inverted optical microscope. Photographs were digitized and analyzed, using three distinct approaches. The results indicate that the agglomerates are fractal, having a dimension of approximately 1.5, which agrees well with the predictions of the diffusion‐limited cluster–cluster aggregation
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