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Multidimensional, multilevel information storage and encryption in auxetic liquid crystal elastomers.

Zhenming Wang1,2, Thomas Raistrick2, Ming Cheng1

  • 1Department of Electronic and Electrical Engineering, State Key Laboratory of Optical Fiber and Cable Manufacture Technology, and Shenzhen Engineering Research Centre for High Resolution Light Field Display and Technology, Southern University of Science and Technology, Shenzhen, 518055, China. yjliu@sustech.edu.cn.

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Researchers developed multilevel information storage and encryption (M²ISE) using soft auxetic liquid crystal elastomers. This novel approach offers secure data storage with independent optical and tactile decryption methods.

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Area of Science:

  • Materials Science
  • Soft Matter Physics
  • Information Security

Background:

  • Rapid information technology development necessitates advanced information storage and security solutions.
  • Existing methods face challenges in multilevel information storage and encryption (M²ISE).
  • Soft materials offer potential for innovative M²ISE strategies due to their unique properties.

Purpose of the Study:

  • To introduce an innovative strategy for M²ISE in soft materials.
  • To demonstrate M²ISE using auxetic liquid crystal elastomer films.
  • To enable both 2D optical and 3D tactile information storage and encryption.

Main Methods:

  • Utilizing auxetic liquid crystal elastomer films programmed with strain-dependent optical and morphological responses.
  • Controlling auxetic response via applied voltages (≤2.00 Vrms) during polymerization.
  • Patterning information using UV-masks for binary images (optical) and Braille letters (tactile).

Main Results:

  • Successfully demonstrated M²ISE in a simply manufactured and operated soft material.
  • Achieved tunable auxetic strain thresholds between approximately 0.58 ± 0.05 and 0.91 ± 0.05.
  • Developed independent decryption processes for optical and tactile information, enhancing security.

Conclusions:

  • This study presents a novel approach for information encryption using auxetic liquid crystal elastomers.
  • The developed material and method offer secure, multilevel data storage with distinct optical and tactile information channels.
  • This work highlights the potential of soft materials in advancing information security technologies.