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Figure 9
(a) Monolayer structure p2mm, ρ = 3/2; (b) bilayer of structure (a) with δ = π/4: a quasiperiodic square pattern; (c) bilayer of structure truncated square p4mm δ = π/8: a quasiperiodic octagonal pattern; (d) bilayer of structure honeycomb p6mm δ = π/12: a quasiperiodic dodecagonal pattern. |