Nanowires, Nanotubes, and Core-Shelled Structures: From Growth to Material Characterization
Figure 1
(a) A top-view SEM image of SiO2 nanowires grown at 1150°C for 2 hours in a N2 ambient. (b) A top-view SEM image of polycrystalline Ta2O5/SiO2 core-shelled nanowires synthesized by annealing SiO2 nanowires in a reductive Ta vapor ambient at 950°C for 4 hours. (c) The corresponding TEM image of (b) with the selected area diffraction (SAD) in the lower inset. (d) The SEM image of Ta2O5 nanotubes after dipping into the dilute HF solution with the magnified SEM image in the lower inset.
