Temperature Effect on the Morphology and Fractal Dimensions of Zinc Metal Leaves
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概要
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Zinc metal leaves grown two-dimensionally by electrodeposition were experimentally investigated with particular attention to the temperature dependence of their morphology. They changed form from a DLA-like to a disclike pattern with increasing temperature. The results of fractal analyses indicated that at temperatures lower than 20°C, their fractal dimension $D$ is almost constant at 1.66, which is nearly equal to that of the two-dimensional DLA. At temperatures higher than 20°C, $D$ increases almost linearly with temperature. From the analysis of scanning electron microscope images of various magnifications, it is shown that zinc metal leaves are fractals over a wide length range spanning five orders of magnitude with a single value of $D$. The relationship of the temperature-dependent change in the morphology of the metal leaves with variation of $D$ has been successfully interpreted on the basis of Nittmann and Stanley's statistical mechanical model [J. Nittmann and H. E. Stanley: Nature 321 (1986) 663].
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2003-10-15
著者
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Suda Fujio
Department Of Applied Physics Faculty Of Science Science University Of Tokyo
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Kawauchi Shin-a
Department Of Organic And Polymeric Materials Tokyo Institute Of Technology
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Ito Mitsuru
Department Of Applied Chemistry Seikei University
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Suda Fujio
Department of Resources and Environment Science, School of Humanities and Culture, Tokai University, 1117 Kitakaname, Kanagawa 259-1292, Japan
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Kawauchi Shin-a
Department of Resources and Environment Science, School of Humanities and Culture, Tokai University, 1117 Kitakaname, Kanagawa 259-1292, Japan
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Ito Mitsuru
Department of Resources and Environment Science, School of Humanities and Culture, Tokai University, 1117 Kitakaname, Kanagawa 259-1292, Japan
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