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. 2016 Nov 25;6:37545. doi: 10.1038/srep37545

Figure 2. Performance of the controllable random surface in diffusing the EM wave to desired directions.

Figure 2

(ad) The mixed coding patterns M1–M4. (eh) The 3D scattering patterns for M1–M4 plotted in the polar coordinate, where the radial and azimuthal directions represent respectively, the elevation angle θ and azimuthal angle φ in the spherical coordinate.