Sparse nanowire arrays for facile transport measurements

Pseudo-monocrystalline properties of cylindrical nanowires confinedly grown by electrodeposition in nanoporous alumina templates

“…67 The nanowire growth by electrodeposition inside the nanopores of the alumina template is limited by diffusive mass transport and subjected to the restrictions of the pore size and geometry, in contrast to free-templated nanowires. 68 The results of the second family of Ni NWs studied herein suggest that Ni NWs tend to grow with (111) surfaces in the radial directions, which are the surfaces that exhibit the lowest surface energy for the fcc metals; 69 however, the crystal growth conned within the cylindrical volume of the PAAM channels could yield the frustrated formation of stable facets and right angles in these directions and (111) stacking faults occur. Therefore, the NWs were not viewed along a crystallographic direction when they were tilted from the [111] zone axis in large tilting angle ranges (we explored ranges from À25 to +25 for a and b).…”

Surface and interface characterization of nanoporous alumina templates produced in oxalic acid and submitted to etching procedures

“…The quantities D p , P and Al 2 O 3 thickness are also dependent on anodization temperature, while the D int and n remains almost constant. NATs have been used as a template to produce nanowires by several methods and techniques, such as paired cell [16], ethanol-nitrate [17], solegel [18] and electrodeposition [19,20]. For the fabrication of nanowires by electrodeposition, it is supposed that high applied voltages are required for the tunneling of the electrons through the Al 2 O 3 barrier layer at the Al 2 O 3 /Al [20] to promote growth of the nanowire, however non uniform growth of the nanowires occurs.…”