Fig. 5: In situ observation of the formation/elimination of a single screw dislocation in the contact area.
From: Site-specific electrical contacts with the two-dimensional materials
TEM images of screw dislocation appearing during measurement at a 0 s, b 17 s, and c 20 s. TEM images of screw dislocation disappearing during measurement at d 0 s, e 3 s, and f 20 s. g Atomic model, h simulated HREM image (by JEMS using multislice method), and i experimental image enlarged from the red dash box on c along zone axis [010]. j Current–voltage curve for the measurement of a–c and k current–voltage curve for the measurement of d–f. The highlighted turning points in j and k correspond to the snapshots of b, e above, respectively. Scale bars in a–f = 5 nm.
