大多数情况下,高分辨电子显微象并不直接反映晶体结构。象面上的波函数是透射波函数与衬度传递函数富里叶变换的卷积。即使在弱相位物体的情形,衍射波等同于结构因子,只要不满足Scherzer条件,象就偏离于结构投影。在影响象质量的各种参数中,欠焦值是最主要的。高分辨电子显微象直接法解卷的目的,是从一张任 In most cases, high-resolution electron microscopy does not directly reflect the crystal structure. The wave function on the image plane is the convolution of the transmitted wave function and the Fourier transform of the contrast transfer function. Even in the case of weakly phased objects, the diffracted waves are equivalent to the structure factor, as long as the Scherzer condition is not satisfied, the image deviates from the structure projection. Among the various parameters that affect image quality, the underfocal value is the most important. The purpose of high-resolution electron microscopy direct method unwinding is from a post