Extended Data Figure 9: MD simulations of the order–disorder transition in trilayer ice.
Top (a) and side (b) views of trilayer ice formed at P ≈ 1.4 GPa in the graphene capillary with h = 11.5 Å. Different colours correspond to water molecules in different layers (same colour coding as in Extended Data Fig. 7). No clear stacking sequence can be determined for this structure. c, d, Potential energy per atom in 2D ice as a function of applied pressure for the bilayer (c) and trilayer (d) ice.
