fig2

Figure 2. (A) Human eye and retina; (B) exploded, side, and top views of EC-EYE; low-resolution cross-sectional SEM image of hemispherical PAM/nanowires; cross-sectional SEM image of nanowires in PAM; high-resolution transmission electron microscopy image of a single-crystalline perovskite nanowire; and a photograph of the PDMS socket; (C) schematic illustration of measurement setup; and (D) image reconstructed (letter “A”) by EC-EYE and its projection on a flat plane. This figure is quoted with permission from Gu et al.^[27]. EC-EYE: Electrochemical eye; PAM: porous aluminium oxide membranes; PDMS: polydimethylsiloxane.