Step 1: Determination of the center of the ED pattern: A stack of all the electron diffraction (ED) patterns was created, and these patterns were aligned using the image alignment tool in GMS software. Since no beam stopper was used, the initial center coordinate of the first ED pattern was manually estimated. Radial intensity averaging was performed from the estimated center of the ED pattern. The {110} Bragg plane is the most intense peak in the ED pattern of ZIF-8. The center coordinate of the ED pattern was adjusted to achieve the maximum peak intensity and minimum peak broadening of the {110} peak. Incorrect selection of the center coordinates leads to peak broadening and reduced peak intensity. The center of the ED pattern can also be identified using a non-iterative least-squares ellipse fitting method .