Figure 2.
The image consists of three separate panels. The first panel (a) shows an electron micrograph of elongated crystal structures, with a circular configuration and various thin filaments, accompanied by a scale bar indicating a size of 0.5 micrometres. The second panel (b) features another electron micrograph displaying additional elongated crystalline materials arranged in a more chaotic fashion, with a scale bar representing 100 nanometres. The third panel (c) presents a diffraction pattern, characterised by a central bright spot surrounded by several faint dots, signifying the crystalline nature of the material, with a scale bar denoting a measurement of five reciprocal nanometres.(a, b) TEM images and (c) SAED pattern of synthesised MnO2 nanofibres