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The effect of oscillatory shear flow on step bunching

机译:振荡剪切流对阶梯成束的影响

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摘要

Durig crystal growth, an imposed shear flow at the crystal-fluid interface can alter the conditions for the onset of morphological instability. In previous work, we studied the effect of time-independent shear flows and anisotropic interface kinetics on the morphological stability of a crystal growing from supersaturated solution. The model assumes that growth is by the motion of elementary steps, which is treated by a macroscopic anisotropic kinetic law; morphological instability corresponds to the bunching of elementary steps.
机译:杜里格(Durig)晶体的生长,在晶体-流体界面处施加的剪切流会改变形态不稳定发生的条件。在以前的工作中,我们研究了与时间无关的剪切流和各向异性界面动力学对过饱和溶液中生长的晶体形态稳定性的影响。该模型假设增长是通过基本步骤的运动来实现的,而基本步骤的运动则通过宏观各向异性动力学定律加以处理。形态不稳定性对应于基本步骤的聚集。

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