Nanosphere Lithography: A Powerful Method for the Controlled Manufacturing of Nanomaterials

Figure 27

TiO₂ nanocolumn array obtained by PLD using a PS colloidal monolayer as substrate. (a) HR-SEM micrograph observed from the side (the dotted circle highlights the PS sphere). “Adapted with permission from [122]. Copyright (2008) American Chemical Society.” (b), (c) Top-view HR-SEM micrograph of TiO₂ nanorods obtained under different background gas pressures ((b) 2.0 Pa for 200 min and (c) 26.7 Pa for 30 min) and subsequent annealing. “Adapted with permission from [123]. Copyright (2005) John Wiley and Sons.”