Extended Data Fig. 10: The capillary-force-driven rolling-up process used to produce roll-up vdW superlattices.
From: High-order superlattices by rolling up van der Waals heterostructures
a, b, Optical microscopy images of SnS2/WSe2 roll-up obtained with ethanol–water (E/W) (a) and ethanol–water–ammonia (E/W/A) (b) solutions. Scale bars, 20 μm. c, Statistical distribution of the yield of roll-ups. FR, full roll-ups (for example, b); PR, partial roll-ups (for example, a); NR, no roll-ups.
