Fig. 1: Dual function phase-change nonlocal metasurface.
From: Nonlocal phase-change metaoptics for reconfigurable nonvolatile image processing
a 3D illustration of the phase-change nonlocal metasurface performing the dual functions of edge detection in the amorphous phase and bright field imaging in the crystalline phase of Sb2Se3. b Schematic of the working principle of the metasurface in k-space, corresponding to the Fourier transform of the operation in real space
