Fig. 1: Volume diffusion of impurity atoms in a metal lattice.
From: Atomic scale volume and grain boundary diffusion elucidated by in situ STEM
a 3D rendering of random walks of impurity atoms inside an face-centred cubic crystal. b STEM image of single impurity atoms in an Al film at room temperature (RT). c Experimentally observed random walks of impurity atoms in copper at 385 °C over a time of 120 s. The arrows signify the movement of an atom along the positions highlighted in red during the timeframe. The raw images of the sequence and the full animation are shown in Supplementary Fig. 4 and Supplementary Movie 1.
