Dynamical theory of electron diffraction for the electron microscopic image of crystal lattices II. Image of superposed crystals (moiré pattern)
Dynamical theory of electron diffraction for the electron microscopic image of crystal lattices II. Image of superposed crystals (moiré pattern)
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晶格电子显微图像的电子衍射动力学理论 II。叠加晶体的图像（莫尔图案）
DOI：
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发表时间：
1961
期刊：
影响因子：
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通讯作者：
T. Naiki
中科院分区：
文献类型：
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作者：
H. Hashimoto;M. Mannami;T. Naiki
用电子衍射动力学理论解释了莫尔云纹的电子显微图像。对两例常见病例进行治疗。一种是两个板状晶体紧密叠加，中间没有真空层的情况，另一种是两个晶体之间叠加有真空层的情况。对两个叠加晶体的分辨晶格像也进行了解释。图像的强度分布随晶体和真空层的厚度以及与布拉格角的偏差而变化。在硫化铜、钯金和铂-酞菁的云纹电子显微镜图像中，观察到了本理论所期望的对比条纹和反常的移动。文中还讨论了云纹与晶体结构的关系。
The dynamical theory of electron diffraction is applied to the interpretation of electron microscopic images of moire patterns. Two cases often observed are treated. One is the case where two plate-shaped crystals are superposed closely without a vacuum layer between them and another is the case where two crystals are superposed with a vacuum layer between them. Resolved lattice images of two superposed crystals are also interpreted. The intensity profiles of the images vary with the thicknesses of the crystals and vacuum layer and with the deviation from the Bragg angle. The shifts of the fringes and anomalies of the contrast which are expected from the present theory were observed in the electron microscopic images of moire patterns of cupric sulphide, palladiumgold and platinum-phthalocyanine. The relation between moiré patterns and crystal structure is also discussed.