Figure 12.

SEM secondary electron image (SEI) of tubular TiO_x assembled from the nanocondensates fabricated by PLAL under Q-switch mode (i.e. sample 3 (panels a, b, and c) and 4 (panel d) in Table 1) for various morphologies: a nearly perfect pipe, b unfolded pipe, c hierarchical branches within the pipe, d necking of the connected pipes (the same as Fig. 2e)