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Processed AC-TEM images showing the evolution of (a) SV2/DV2 as bright spots and (b) SV1/DV1 as dimmed regions over 71 s. (c) Distribution of SV1/DV1 and SV2/DV2 marked as red and green spots, respectively. (d) Histogram and (e) trend lines representing the number change of SV1/DV1 and SV2/DV2 as a function of time.
