Synthesis of α-Alumina Nano-Onions by Thermal Decomposition of Aluminum Formate

Figure 5

(a) STEM image of α-Al₂O₃ at 1100°C, (b) HRTEM image of onion nanostructure, (c) HRTEM contrasted image, (d) image profile generated from the processed image, and (e) model of the onion nanostructure of α-Al₂O₃.