Fig. 8. Nanopore geometric reconstructions.

a–p Time series of ADF-STEM images, and their corresponding atomic models. Holes can be seen to change its shape in monolayer PbI₂ flake. The blue atoms correspond the lead defect region and the green corresponds to the iodide defect region. The black circles around the atoms in the atomic models correspond to the new atomic bond in the structure as compared from the previous frame. q–u Time series of ADF-STEM images recorded after every 1 min of electron beam exposure. The defect starts forming after 1 min, in image r and more atoms are ejected to form a bigger defect in s. Then the atoms at the edge starts ejecting out in t and reconstruction of the flake starts occurring leading to again defect-free surface in u.The scale bar in all images corresponds to 1 nm.