Extended Data Fig. 4: Microstructure of ND/DMG composite.

(a-c) Atomic-resolution LAADF and (d-f) HAADF images of the typical microstructure of ND/DMG composite viewed along the [−101] zone axis of diamond. The dark, curved stripes with larger interlayer spacing are the disordered multi-layer graphene, and the periodic crystal lattice with white color and smaller interplanar spacing is from cubic diamond. Twins and stacking faults can be found in nanodiamonds.