SEM images of the as-prepared Bi-Ni nanostructure arrays and AAO template. Side views of (a, b) nanowires and (c, d) nanocables. (b) and (d) are the magnified images of (a) and (c), respectively. (e) and (f) are the front and cross section of the AAO template, respectively.
Jia et al. Nanoscale Research Letters 2012 7:130 doi:10.1186/1556-276X-7-130