Adsorbate Mediated Electrodeposition: Experimental and Multiscale Numerical Investigations on Surface Roughness and Shape Evolution

提案标题：吸附介导的电沉积：表面粗糙度和形状演变的实验和多尺度数值研究建议编号：CTS-0135621主要研究员：Richard Alkir研究所：伊利诺伊斯大学这项合作工作的目的是提高对金属和合金电沉积过程中微量溶液添加剂如何影响表面粗糙度和形状演变的理解。将对电沉积过程进行多尺度模拟，包括连续和非连续行为。关于添加剂如何影响表面粗糙度演变的假设将从原子力显微镜(AFM)测量获得的大数据集中推断出来，这些数据集与高通量电化学电池和表征良好的模型添加剂系统相结合。假说将通过将这些数据与粗糙度演变的多尺度模拟进行定量比较来完善。非连续体现象将由三维动力学蒙特卡罗方法模拟，该方法模拟添加剂如何控制粗糙度的演变。将进行测量卷曲几何表面形状演变的验证性实验，以测试多个长度尺度上的预测。这项工作将有助于更好地理解通过电沉积金属、合金和半导体形成的新型结构的制造过程。

Proposal Title: Adsorbate Mediated Electrodeposition: Experimental and Multiscale Numerical Investigations on Surface Roughness and Shape EvolutionProposal Number: CTS-0135621Principal Investigator:Richard AlkireInstitution:University of IllinoisThe objective of this collaborative effort is to improve understanding of how surface roughness and shape evolution are influenced by trace quantities of solution additives during electrodeposition of metals and alloys. Multiscale simulations of the electrodeposition process including both continuum and non-continuum behavior will be performed. Hypotheses for how additives influence surface roughness evolution will be inferred from large datasets obtained through atomic force microscopy (AFM) measurements carried out in conjunction with high throughput electrochemical cells and well-characterized model additive systems. Hypotheses will be refined through quantitative comparison of these data with multiscale simulations of roughness evolution. Non-continuum phenomena will be modeled by a three-dimensional kinetic Monte Carlo method that simulates how roughness evolution is controlled by additives. Verification experiments that measure shape evolution on surfaces of convoluted geometry will be carried out to test predictions over multiple length scales. This work will lead to a better understanding of processes used in the manufacture of novel structures formed by electrodeposition of metals, alloys and semiconductors.