Figure 7
The sample drift is accounted for by retrieving a common thickness interval between the recordings. (a) HAADF image of the Pt [110] specimen with intensity contours illustrating the local variations in thickness. Three possible points of acquisition are highlighted and all contain atomic columns from a same thickness isoline. (b) Unfiltered HAADF images for each recording. The variation in thickness from one recording to another is measured using (c) a Voronoi analysis which allows to find the (d) thickness interval common to the three recordings and finally make sure that further analysis are done using Voronoi-integrated diffraction patterns only from this common thickness interval.
