Pattern formation in noise-reduced electrochemical deposition.
Pattern formation in noise-reduced electrochemical deposition.
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降噪电化学沉积中的图案形成。
DOI：
10.1103/physreve.48.3825
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发表时间：
1993
期刊：
影响因子：
--
通讯作者：
Bennema
中科院分区：
文献类型：
--
作者：
Wang;Ming;Bennema
在含有${\mathrm{CuSO}}_{4}$溶液的琼脂糖凝胶介质中进行降噪电沉积。与通常在水溶液电沉积中看到的随机分形图案不同，存款显示出更有序的形态。可以看到具有明显主干的树枝状图案。在枝晶生长过程中观察到交替的尖端分裂。实验结果表明，生长界面附近对流噪声的抑制是导致枝晶出现的主要原因。交替的枝晶尖端分裂被解释为在生长界面前的杂质的交替积累和耗尽的结果。
Noise-reduced electrodeposition is performed in an agarose gel medium containing ${\mathrm{CuSO}}_{4}$ solution. Instead of random fractal-like patterns usually seen in ${\mathrm{CuSO}}_{4}$ aqueous solution electrodeposition, the deposit shows a more ordered morphology. The dendritic pattern with an evident main stem can be seen. Alternating tip splitting has been observed during the dendritic growth. It is suggested that the suppression of convective noise near the growing interface is responsible for the appearance of dendrites in this experiment. The alternating dendrite tip splitting is interpreted as the result of alternating accumulation and depletion of impurities in front of the growing interface.