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Fig. 4 | Advanced Structural and Chemical Imaging

Fig. 4

From: Detecting structural variances of Co3O4 catalysts by controlling beam-induced sample alterations in the vacuum of a transmission electron microscope

Fig. 4

Sequential low dose-rate phase images a, b of a spinel Co3O4 particle. The mid-voltage range electron beam acceleration is 80 kV. A total of 160 images were recorded to produce the result. The sample was prepared by the high throughput printing process and exposed to technical air (N2, O2) at 400 °C for 2 h. The inserted nano-diffraction patterns show crystal tilt away from the [211] zone axis. Dose rate, total dose and accumulated dose are indicated and arrows mark the location of line traces that yield the contrast (phase) profiles of c. For comparison, expected phase changes from single O and Co atoms are indicated in c, too

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