Figure 3.

a Side view of Na7(H3O)Nb6O19·14H2O nanobelt array, exhibiting that the nanobelts are typically ~50 μm in length. b EDX spectrum of the irregular-shaped microcrystal layer where NaNbO3 nanobelts grow, indicating the presence of Na, Nb and O.

Wu and Xue Nanoscale Res Lett 2011 6:14   doi:10.1007/s11671-010-9757-0