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Extended Data Fig. 4 | Quatrefoil, cinquefoil and hexafoil patterns.
Uncoloured SEM images of the samples showing the variety of quatrefoil (a, b),
cinquefoil (c) and hexafoil (d–f) patterns mapped in Fig. 3. Values of edge gap,
g, and average lamellar spacing, λ, are given under each image. The
solidification direction is out of the image (z axis), as indicated by the red
dotted circle. All scale bars, 1 μm.