Figure 2 Time-programmable structural colors for optical information encryption. (IMAGE)

Light Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CAS

Figure 2 Time-programmable structural colors for optical information encryption.

Caption

Figure 2 Time-programmable structural colors for optical information encryption. (a) Schematic illustration of the self-erasing process. (b) Optical microscopy images showing the time-programmable coloration and self-destruction process of the chameleon pattern at different time points (T0–T8). T₀ represents the initial state in air; T1–T7 correspond to the sequential programmable color transition from red to purple; T8 denotes the final state after structural collapse. n0–n8 denote the environmental refractive indices of the structure at the corresponding time points. Insets on the left show the corresponding SEM images at T0 and T8. (c) Transmission optical microscopy images of time-programmable encrypted information at different decryption steps, including the initial state, decryption results of the first to fourth layers (Output1-4), and the final state after structural self-destruction.

Credit

Zhi-Yong Hu et al.

Usage Restrictions

Credit must be given to the creator.

License

CC BY

Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.