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. 2024 Oct 18;14:24434. doi: 10.1038/s41598-024-72634-2

Fig. 3.

Fig. 3

Photographs of micro fabricated metalens: (a) Top coated with a thin layer of gold for high reflectivity for micro-focal ultrasonic laser reception and (b) Bottom view showing metamaterial mesh with scale; and SEM images of mesh (c) Viewed from the bottom; (d) Viewed from the side.