X-Ray Studies of the Statistical Physics of Surface Morphology

表面形貌是许多技术重要过程的关键，包括腐蚀，催化和外延生长。此外，还存在一些基本的科学问题，特别是关于界面中不同点之间的瞬时相关性的性质，以及不同时刻界面位置之间的相关性。这些基本问题将在拟议的研究中讨论。具体地说，将研究晶体表面的平衡性质，以研究平衡表面形态。此外，在快速温度变化和生长过程中，将研究表面形貌变化的动力学。这项研究将有助于更好地理解是什么决定了表面形态。这样的理解可能最终允许引入简单的加工策略，以定制表面形态以适应技术需求。在这些研究中采用的实验技术是高分辨率同步加速器x射线散射，并与经过验证的最先进的超高真空设备相结合。固体表面的形式和结构是许多技术上重要过程的关键，例如，腐蚀、催化和一种晶体固体在另一种晶体固体上的生长。此外，还有一些基本的科学问题，特别是关于界面中不同点之间的瞬时相关性的性质（如当晶体表面生长时）以及不同时间界面位置之间的相关性。为了解决这些问题，将对晶体表面的平衡性质进行研究，以研究表面的平衡形式和结构。在快速温度变化和生长过程中，表面形状和结构变化的速率也将被研究。这项研究将使人们更好地理解是什么决定了固体表面的形式和结构，并最终允许引入简单的加工策略来定制表面形式和结构以适应技术需求。实验技术采用高分辨率x射线散射与先进的超高真空仪器相结合的方法。* * *

9423641 Mochrie Surface morphology is key to a number of technologically important processes, including for example, corrosion, catalysis, and epitaxial growth. In addition, there remain basic scientific questions, most especially concerning the nature of instantaneous correlations between different points in the interface, and the correlation between the interfacial position at different times. These fundamental issues will be addressed in the proposed research. Specifically, studies of the equilibrium properties of crystal surfaces will be made to investigate equilibrium surface morphology. In addition, the kinetics of changes in surface morphology following rapid temperature changes, and during growth, will be investigated. This research will lead to an improved understanding of what determines surface morphology. Such an understanding may eventually allow for the introduction of simple processing strategies for tailoring surface morphology to suit technological needs. The experimental technique employed in these studies is high-resolution synchrotron x-ray scattering, in conjunction with a proven, state-of-the-art ultra-high vacuum apparatus. %%% The form and structure of solid surfaces are the keys to a number of technologically important processes, including for example, corrsion, catalysis, and the growth of one crystalline solid on another. In addition, there are basic scientific questions, especially concerning the nature of instantaneous correlations between different points in an interface (as when a crystal surface grows) and the correlation between the interfacial position at different times. To address these issues, studies of the equilibrium properties of crystal surfaces will be made to investigate the equilibrium form and structure of the surface. The rate at which changes in surface form and structure occur following rapid temperature changes, and during gro wth, will also be investigated. This research will lead to an improved understanding of what determines the form and structure of a solid surface, and may eventually allow for the introducton of simple processing strategies for tailoring surface form and structure to suit technological needs. The experimental technique employed in these studies is high- resolution x-ray scattering combined with state-of-the-art ultra-high vacuum apparatus. ***