Extended Data Fig. 3: Electrochemical intercalation and exfoliation of M3X8 and M3QX7 single crystals and morphological characterization of 1D nanoscrolls.
From: Near-100% spontaneous rolling up of polar van der Waals materials
a, Images of as-grown single crystals of Nb3Cl8, Nb3SeI7, and their alloys. b, A crystal sandwiched in a Ti chip and secured with PTFE tape serving as electrochemical cathode (left). A two-electrode device using TBAC-PC as the intercalant to exfoliate the M3X8 and M3QX7 single crystal, demonstrating the dramatic expansion and detachment of the crystals during the exfoliation process (right). c and d, Statistical histograms of the length and diameter distributions of 1D Nb3Cl8 and Nb3SeI7 nanoscrolls. The number of statistics per category is 360. \(\bar{\text{L}}\) and \(\bar{\text{D}}\) are the average length and diameter, respectively. e and f, AFM surface topography of 1D Nb3Cl8 and Nb3SeI7 nanoscrolls.
