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. 2021 Feb 22;12:1225. doi: 10.1038/s41467-021-21440-9

Fig. 5. Imaging using the GSST varifocal metalens.

Fig. 5

a Well-resolved lines of USAF-1951 resolution charts: the patterns have half periods close to the Rayleigh resolution limits of 7 µm and 9 µm in the a-state (f1) and c-state (f2), respectively. b Schematic of the setup for imaging multi-depth targets. Top-view photograph of the target consisting of two patterned samples overlapped at an angle of 45°. Camera images of the dual-depth target acquired by stationary metalens in a- and c-states.