Figure 2. Active beam-steering metasurface via reversible Cu electrodeposition. (IMAGE)
Caption
Figure 2. Active beam-steering metasurface via reversible Cu electrodeposition. (a) Schematic of the electrochemical device for dynamic beam steering. (b) Top-view SEM images of the metasurface before and after Cu deposition, with the deposited region partly highlighted by EDS mapping. (c) Cross-sectional STEM image of the metasurface after Cu deposition. (d) Fourier-plane images showing the angular distribution of reflected beam during RME switching. (e) Cycling test of the active metasurface, showing stable diffraction and reflection efficiencies over 3000 cycles.
Credit
Po-Chun Hsu et al.
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CC BY