Crystallography employing conventional large-volume diffraction has enabled the firm connections between structure and properties and structure and function that have solved many of the most difficult problems in materials science and biology. Disordered materials possess a large variety of local structural arrangements and pose a special challenge for crystallography. Often the local structures and symmetries that are responsible for observed phenomena in structurally complex disordered materials cannot be distinguished from conventional diffraction alone. In this article, we review analytical approaches for understanding local structure and symmetry from angular correlations in limited-volume diffraction patterns of amorphous materials, with a special focus on electron nano-diffraction. We discuss how these angular correlations can be interpreted in the context of dense, disordered, three-dimensional materials probed in a projection geometry and hig...

中文翻译：

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扫描/透射电子显微镜中电子纳米衍射对非晶态材料的角度相关性的统计测量

使用常规大体积衍射的晶体学已经实现了结构与性能以及结构与功能之间的牢固联系，从而解决了材料科学和生物学中许多最困难的问题。无序的材料具有各种各样的局部结构布置，并且对晶体学提出了特殊的挑战。通常，导致结构复杂的无序材料中观察到的现象的局部结构和对称性无法与常规衍射法区分开。在本文中，我们回顾了用于从非晶材料的有限体积衍射图中的角度相关性理解局部结构和对称性的分析方法，特别关注电子纳米衍射。