Extended Data Fig. 2: Structural characterization of Nb3Cl8 and Nb3SeI7.
From: Near-100% spontaneous rolling up of polar van der Waals materials
a and b, XRD pattern of the single crystals, powders and exfoliated nanoscrolls of Nb3Cl8 and Nb3SeI7. c and d, HRTEM images of 2D Nb3Cl8 and Nb3SeI7 flakes. e and f, The corresponding FFT pattern of 2D Nb3Cl8 and Nb3SeI7 flakes. Labeling corresponds to the planes in the HRTEM images.
