Figure 3From: A combination of hard and soft templating for the fabrication of silica hollow microcoils with nanostructured walls TEM images of different sections of silica hollow microcoils. The initial weight ratios for the silica coating process were CTAB/NH3(aq.)/CMC-COOH/TEOS = 13.7/69.4/2.0/14.9.Back to article page