Fig. 5: Proof-of-concept demonstration of high-resolution optical information encryption.
From: Synthetic nano-kirigami with high deformability for reconfigurable information displays
a, c Top-view SEM images of structural patterns encoded with Morse codes (decoded as “BIT”) and capital letters “BIT”. The spiral patterns are enclosed by the black dotted lines with the structures of θ = 270° while other structures have θ = 240° (as illustrated in the inset of a). b, d Captured images of dynamically reversible encryption (voltage off) and decryption (with voltage of 36 V). The patterned information is obviously displayed and perfectly vanished by utilizing the different reconfiguration responses of two kinds of spirals. e Captured images of dynamic encryption (voltage off) and decryption (with voltage of 15 V) of the large-area and complex pattern programmed by Chinese characters “北理工”. Images taken from Supplementary Movies 4 to 6. Scale bars: a–d 5 μm; e 25 μm.
