Hua Zhang1

1, Nanyang Technological University, Singapore, , Singapore

In this talk, I will summarize the recent research on the crystal phase-engineering of novel nanomaterials in my group. It includes the first-time synthesis of hexagonal-close packed (hcp) Au nanosheets (AuSSs) on graphene oxide, surface-induced phase transformation of AuSSs from hcp to face-centered cubic (fcc) structures, the first-time synthesis of 4H hexagonal phase Au nanoribbons (NRBs) and their phase transformation to fcc Au RNBs, and the epitaxial growth of 4H Ag, Pt, Pd, PtAg, PdAg, PtPdAg, Rh, Ir, Ru, Os and Cu on 4H Au NRBs. Importantly, the concept of crystal-phase heterostructure is proposed.