【求助】关于截面TEM

这是附件。

怎么没人说啊？太伤心了。

As described in figure captions, the photo were taken under two beam condition. They took the DF images with different g vectors, one was along the vertical direction of the film and the other was along film direction. Under two beam condition, there are only two strong reflections, transmission beam and other diffraction beam which has g vector. you can obtain the two beam condition by tilting sample. Then, you can take BF or DF by OA(objective aperture) selection.In this case, they took weak beam DF.

wukemin 发表:这是附件。

谢谢上面的回答，确实是您那样说的，但是我问的问题不是那，而是我感觉这两个图就好像一张纸的正面，横着拍照和竖着拍照是一样的。但是为什么电镜里面不一样？是不是和倒空间什么的相关。请您再仔细读一下我问的问题，谢谢了。