Figure 1.

Preparation scheme of magnetic nanobrush. a The AAO template covered with Al was fabricated by anodization of Al film in an acidic solution. b Cobalt nanowires were electrodeposited into the nanoporous. c The surface of film was smoothed by dilute nitric acid solution. d The surface of film was covered with a Fe70Co30 layer by the sputtering technique. e Al substrate and another cobalt nanowire arrays were removed by HgCl2 solution. f After eroding the AAO template using NaOH solution, a nanobrush was obtained

Ren et al. Nanoscale Research Letters 2010 5:853-858   doi:10.1007/s11671-010-9574-5