Lu Hang-Jun (陆杭军)a, Wu Feng-Min (吴锋民)ab, Fang Yun-Zhang (方允樟)a
a College of Mathematics and Physics, Zhejiang Normal University, Jinhua 321004, China; b College of Science, Zhejiang University, Hangzhou 310027, China
Abstract Chessboard-like substrates are introduced in this paper, in order to study the diffusion-limited aggregation (DLA) and the motion of poly-atoms on heterogeneous surfaces. The effect of morphology of such substrates upon the cluster aggregation is investigated using the Monte Carlo simulation. It is found that the growth process and the cluster morphology are governed by the energetic topography of the substrates. Our simulation also indicate that the island density and the fractal dimension of the clusters depend strongly on the substrate topography and the activation energy.
Received: 21 April 2004
Revised: 27 May 2004
Accepted manuscript online:
PACS:
68.37.-d
(Microscopy of surfaces, interfaces, and thin films)
Fund: Project supported by the Fund of Natural Science Foundation for Young Scientists of Zhejiang Province (Grant No RC02069) and Zhejiang Provincial Natural Science Foundation (Grant No 101032).
Cite this article:
Lu Hang-Jun (陆杭军), Wu Feng-Min (吴锋民), Fang Yun-Zhang (方允樟) Aggregation on heterogeneous surface 2004 Chinese Physics 13 2038
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