Single-crystal metal foils with high-index facets are promising for 2D epitaxy, catalysis and electronics, however fast and deterministic preparation is challenging. Here authors selectively activate the abnormal growth of high-index facets, thus realising the deterministic preparation of single-crystal Cu, Ni and Au foils with high-index facets.
- Keqiang Ji
- Lai-Peng Ma
- Wencai Ren