Figure 9.

Optical properties of Nb2O5 nanorod precursors and nanotube products. UV-Vis spectra (a) and the corresponding (╬▒hv)2 versus photo energy (hv) plots (b) of Nb2O5 nanorods and nanotubes measured at room temperature.

Liu et al. Nanoscale Research Letters 2011 6:138   doi:10.1186/1556-276X-6-138
Download authors' original image