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. Author manuscript; available in PMC: 2018 Jul 15.
Published in final edited form as: Nat Photonics. 2018 Jan 15;12:84–90. doi: 10.1038/s41566-017-0078-z

Figure 2. Characterization of disorder-engineered metasurfaces.

Figure 2

(a) Photograph and SEM image of a fabricated disorder-engineered metasurface. (b) Simulated transmission and phase of the SiNx nanoposts as a function of their width at a wavelength of 532 nm. These data are used as a look-up table for the metasurface design. (c) Measured 2D angular scattering profile of the disordered metasurface, normalized to the strongest scattered field component. (d) Measured 1D angular scattering profile of the disordered metasurfaces that were specifically designed to scatter the incident light to certain angular ranges (NA = 0.3, 0.6, 0.9). (e) Memory effect range and angular scattering range of the disordered metasurface compared with conventional random media such as white paint, opal glass, and ground glass diffusers.