Dynamics of individual atomic kinks during crystal dissolution
Dynamics of individual atomic kinks during crystal dissolution
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晶体溶解过程中单个原子扭结的动力学
DOI：
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发表时间：
2000
期刊：
影响因子：
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通讯作者：
Vogt Mr
中科院分区：
文献类型：
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作者：
Magnussen Om;Vogt Mr
作为固体溶解/结晶的一个基本步骤，通过原子去除/沉积的扭结运动的动力学已经可以通过一种新的扫描隧道显微镜技术直接获得。结果表明，即使在铜溶解开始时，铜的局部溶解/再沉积也呈现出明显的局部波动，平均扭结扩展速率和反应速率分别在10(3)和10(5)个原子S(-1)的范围内。这些实验使人们能够直接测量这种电化学反应的中心动力学性质。
The dynamics of kink motion via atom removal/deposition as a fundamental step in dissolution/crystallization of solids have become directly accessible by a novel scanning tunneling microscopy technique. Results obtained for the electrochemical dissolution of Cu(100) in HCl solution show pronounced local dissolution/redeposition fluctuations at the individual kinks even at the onset of Cu dissolution with average kink propagation and reaction rates in the range 10(3) and 10(5) atoms s(-1), respectively. These experiments allow one to directly measure the central kinetic properties of this electrochemical reaction.