In Situ Investigation of the Early-Stage Growth of Nanoporous Alumina

Figure 5

GISAXS images taken during the second anodization of a double anodization process for a sample anodized in 3 wt% oxalic acid at 40 V at (a) 0 s, (b) 269 s, (c)524 s, and (d) 1196 s (Supplementary 2). Another video is available for a sample anodized at 90 V in phosphoric acid (Supplementary 3).