Fig. 4: Experimental fabrication and measurement of the meta-disk.
From: Holographic multiplexing metasurface with twisted diffractive neural network
a SEM image of the fabricated meta-disk with the size of 640 µm × 640 µm, together with the top- and oblique-view. b Experimental optical path diagram. c Real shot of the experimental setup. d–f Experimental results for dynamic focusing and lunar phase analogy.
