Extended Data Fig. 2 | Single-oriented hBN f lakes in different Cu grains.
a, Optical micrograph of hBN molecules (triangles) grown on different Cu (111)
grains (the black dashed line indicates the boundary between adjacent twin
grains). Oppositely oriented hBN f lakes are marked by red and blue circles.
b, EBSD IPF maps of the area shown in a. The misorientation-of-line scan
indicates that the twin grain is rotated by 60° (grain a to grain b). The RD map
clearly shows the difference in in-plane orientation between grains a and b.