Research / 2022 / Article / Fig 4

Research Article

In Situ Investigation of the Phase Transition at the Surface of Thermoelectric PbTe with van der Waals Control

Figure 4

Movement process of nanoparticles during the phase transition at elevated temperature, 400°C. (a–i) HRTEM images of the nanoparticles during movement as a function of time. The lower insets are corresponding magnifications to clarify the change in morphology and the angle for nanoparticle 4.