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Fig. 4 | Nanoscale Research Letters

Fig. 4

From: Three-Dimensional Metal-Oxide Nanohelix Arrays Fabricated by Oblique Angle Deposition: Fabrication, Properties, and Applications

Fig. 4

Micro-structural properties [2124]. a–c XRD patterns and d–f TEM images (inset: high-resolution TEM images and diffraction patterns) of TiO2, WO3, and ITO NHs. All as-deposited NHs are amorphous films, while they become highly crystalline after annealing (TiO2 NHs: 500 °C for 30 min, WO3 NHs: 500 °C for 1 h, ITO NHs: 550 °C for 1 min)

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