Figure 1
From: Dynamic Metasurface Aperture as Smart Around-the-Corner Motion Detector
(a) Schematic of experimental set-up. The transmission between a Dynamic Metasurface Aperture (DMA) and a monopole antenna is measured in a (large) disordered metallic cavity. The wavelength of operation is 1.55 cm. The cavity wave field is speckle-like as visualised by the vertical and horizontal slices. Two objects, outside the line-of-sight of the antenna pair, can be moved. (b) Schematic of the cavity-backed DMA: a (small) open, disordered cavity with partially tunable boundary conditions. [Figure adapted from ref.36]. (c) Object 1 is a small aluminium block mounted onto a rotation stage. (d) Object 2 is an L-shaped aluminium corner mounted onto a linear rail.
