Figure 1

High-resolution TEM observation of a titania nanosheet.
High-resolution TEM image of a titania nanosheet (a) and corresponding Fourier transform (b). Basic structure models of the titania nanosheet in the [010] (upper) and [001] (lower) directions are shown in (c), in which Ti vacancies are not included. The white rectangle in the structure model indicates a unit cell of the titania nanosheet.