Controlled Deposition of Copper Nanowires for Field Emission Investigations

2 Gesellschaft fur Schwerionenforschung (GSI), Planckstr. 1, D-64291 Darmstadt, Germany The morphology and texture of electrochemically deposited bismuth nanowires as a function of preparation conditions and wire diameter are studied by means of scanning and transmis- sion electron microscopy (SEM and TEM), and x-ray diffraction (XRD). The variation of deposition parameters significantly changes morphology and texture of the wires and shape of caps growing on top. XRD shows that nanowires deposited potentiostatically are textured. The texture strength increases when fabricating the wires at higher temperature, smaller overpotential, and in narrower pores, respectively. Wires deposited with reverse pulses exhibit a texture being more pronounced for shorter cathodic cycles and higher anodic voltage. Those single-crystalline Bi nanowires as well as Cu nanowires are used for field emission investigations.