Fig. 1. (A) and (B) TEM images of dendritic Pt₃Cu cubes. (C) HRTEM and (D) corresponding electron diffraction (ED) pattern of a typical single-crystalline dendritic Pt₃Cu cube. (E) Enlarged HRTEM image and corresponding FFT pattern of a corner of the single-crystalline dendritic Pt₃Cu cube. (F) Further enlarged HRTEM of a branch of the dendritic Pt₃Cu cube.