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Channel Rhodopsins01:11

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Most organisms use photoreceptors to sense and respond to light. Examples of photoreceptors include bacteriorhodopsins and bacteriophytochromes in some bacteria, phytochromes in plants, and rhodopsins in the photoreceptor cells of the vertebral retina. The light-sensitive property of these receptors is because of the bound chromophores, such as bilin in the phytochromes and retinal in the rhodopsins.
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Related Experiment Video

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Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms
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Bioinspired multichannel colorful encryption through kirigami activating grating.

Xiaoyu Hou1, Florian Vogelbacher2, Xintao Lai1

  • 1Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China; School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China.

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|January 26, 2023
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Summary

Researchers developed a novel multichannel optical encryption method using deformable kirigami. This bioinspired approach offers rapid, repeatable color changes for secure information encoding and decoding.

Keywords:
Color changeEncryptionGratingKirigamiStructural color

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Area of Science:

  • Optics and Photonics
  • Materials Science
  • Information Security

Background:

  • Optical encryption is vital, utilizing light properties for secure data transmission.
  • Responsive structural color materials offer visible feedback but face challenges in repeatability and speed.
  • Existing methods for multichannel structural color encryption are limited.

Purpose of the Study:

  • To develop a general multichannel information encryption strategy using responsive structural color materials.
  • To overcome limitations of poor repeatability and slow feedback in existing materials.
  • To explore bioinspired designs for advanced optical encryption.

Main Methods:

  • Designed a two-dimensional deformable kirigami structure with tunable grating orientations.
  • Investigated the relationship between topological space deformation and optical property changes.
  • Demonstrated rapid, repeatable, and programmable color changes in response to mechanical stimuli.

Main Results:

  • The kirigami grating sheet exhibited rapid and repeatable color changes.
  • The strategy enabled programmable control over optical properties.
  • Successful demonstration of multichannel information encryption using structural color variations.

Conclusions:

  • A novel bioinspired multichannel optical encryption strategy was successfully developed.
  • The kirigami-based approach offers significant improvements in speed and repeatability.
  • This work opens new avenues for spatial/spectral encryption, mechano-sensing, and camouflage.