Fig. 4: DPC characterization results of monolayer S2Mo-MoS2-5.
From: Atomic-level polarization in electric fields of defects for electrocatalysis
a Imaging mechanism of DPC-STEM. b HAADF-STEM imaging area of S2Mo-MoS2-5 corresponding to the electric field signal collected by the DPC segment detector. c–e Enlarged regions of pristine atomic structure (c), the antisite defect structure (d), and Mo vacancy structure (e), which correspond to the regions of 1#, 2#, and 3# in (b). f–h Atomic electric field distribution images corresponding to (c, d). The directions of the arrows in (f-h) indicate the directions of the electric fields, and the different colors of the arrows indicate the intensities of the electric fields. The red arrows in (g) indicate the electric field polarization region.
