zwhn2001
第1楼2015/02/10
If the dislocation lies in a plane parallel to the surface of the specimen, then you can form a series of images using different g-vectors.
Note that if g*b=0, the dislocation will be invisible.
Edge dislocation can be determined by HRTEM, there are extra half atomic plane.
At different orientation, there maybe be contrast change, like stacking fault fringes.