Figure II | The SOC fabrication process of the high-quality potassium metal film. (IMAGE)
Caption
Figure II | The SOC fabrication process of the high-quality potassium metal film. a, Schematic of the slipping-assisted oxide-free crystallization process. A fresh potassium droplet is sheared by a fast-moving quartz substrate, exposing an oxide-free interface and spreading into a smooth film. b-e, High-speed optical images show the droplet splitting and spreading process. f-i, Optical, cross-sectional, and X-ray diffraction measurements show a centimeter-scale, flat, and highly crystalline potassium film.
Credit
Lin Zhou et al.
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