Abstract: The ordered nanowire arrays of semi-metal bismuth were successfully prepared by electrodeposition into the pores of anodic alumina membrane(AAO). The structure and morphologies of the as-prepared sample were characterized by X-ray diffraction(XRD), field emission scanning electron microscopy(FE-SEM), and transmission electron microscopy(TEM). XRD result indicates that the as-prepared sample is bismuth with a hexagonal structure, and has a preferential growth direction along the [110] direction. The FE-SEM photos clearly show that the bismuth nanowire arrays are large-area, high-filling and highly ordered. TEM results indicate that the diameter of nanowires is uniform, the surface of nanowires is smooth, and the ratio of nanowires is high. The clear lattice stripes and bright selected electron diffraction spots of HRTEM photo demonstrate single crystal nature of the as-prepared sample.

Key words: Semi-metal bismuth, Anodic alumina membrane, Nanowire array