diffusion-limited aggregation


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diffusion-limited aggregation

[də′fyü·zhən ¦lim·əd·əd ag·rə′gā·shən]
(physics)
A mathematical model for particle aggregation processes, such as the growth of a metal deposit on an electrochemical cell, in which particles move according to a random walk process until they arrive at a certain fixed distance from the current aggregate, where they stick to it.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Makse of Boston University looked at Fractal Cities, he wasn't impressed with the match between the patterns generated by models based on diffusion-limited aggregation and the actual patterns of urban sprawl illustrated in the book.
Reporting in the November 1989 Journal of the Physical Society of Japan, Matsushita noted that Bacillus subtilis grown on dry, nutrient-poor agar plates tends to fan out into patterns that strongly resemble a fractal pattern seen in nonliving systems, called a diffusion-limited aggregation (DLA).
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