Boundary-induced nucleation control: a theoretical perspective,Physical Chemistry Chemical Physics

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Boundary-induced nucleation control: a theoretical perspective
Physical Chemistry Chemical Physics ( IF 2.9 ) Pub Date : 2018-01-19 00:00:00 , DOI: 10.1039/c7cp02348k
Oleg Buller _{1,

2,

3,

4} , Hong Wang _{2,

3,

4,

5} , Wenchong Wang _{2,

3,

4,

5} , Lifeng Chi _{2,

3,

4,

5,

6} , Andreas Heuer _{1,

2,

3,

4}

Affiliation

The pre-patterning of a substrate to create energetically more attractive or repulsive regions allows one to generate a variety of structures in physical vapor deposition experiments. A particularly interesting structure is generated if the energetically attractive region forms a rectangular grid. For specific combinations of the particle flux, the substrate temperature and the lattice size it is possible to generate exactly one cluster per cell, giving rise to nucleation control. Here, we show that the experimental observations of nucleation control can be very well understood from a theoretical perspective. For this purpose we perform, on the one hand, kinetic Monte Carlo simulations and, on the other hand, use analytical scaling arguments to rationalize the observed behavior. For several observables, characterizing nucleation control, very good agreement is found between experiment and theory. This underlines the generality of the presented mechanism to control the deposition of materials by manipulation of the direct environment.

中文翻译：

边界诱导的成核控制：理论观点

对基板进行预构图以在能量上产生更具吸引力的或排斥的区域，使人们可以在物理气相沉积实验中生成各种结构。如果能量吸引区域形成矩形网格，则产生特别有趣的结构。对于颗粒通量，衬底温度和晶格大小的特定组合，可以在每个单元中精确生成一个簇，从而进行成核控制。在这里，我们表明从理论角度可以很好地理解成核控制的实验观察。为此，我们一方面进行动力学蒙特卡洛模拟，另一方面使用解析度标度参数使观察到的行为合理化。对于表征成核控制的几个可观察物，实验与理论之间找到了很好的一致性。这强调了所提出的机制的一般性，该机制通过操纵直接环境来控制材料的沉积。

更新日期：2018-01-19

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