Fig. 4: Scanning electron microscope images of a fabricated metalens. | Communications Physics

Fig. 4: Scanning electron microscope images of a fabricated metalens.

From: Photoacoustic microscopy with meta-optics

Fig. 4

SEM image of the metalens with a diameter of 25 μm, designed without a grating. The inset shows a clear view of the individual unit cells, each sized at 350 nm, containing cuboid-shaped holes with different side-lengths.

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