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Related Experiment Videos

Cellulose self-erasing material with dual functions in information encryption.

Hui Liu1, Yi Lu1, Bitao Peng1

  • 1Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China.

Carbohydrate Polymers
|March 30, 2025
PubMed
Summary
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Researchers developed a novel time-dependent self-erasing material (TDSEM) using gold nanoclusters on cellulose nanocrystals. This material offers secure information storage with time and color-based encryption for advanced anti-counterfeiting applications.

Area of Science:

  • Materials Science
  • Nanotechnology
  • Chemical Engineering

Background:

  • Advanced materials are crucial for secure information storage and transmission.
  • Multi-functional materials with encryption and dynamic properties are highly sought after.

Purpose of the Study:

  • To develop a time-dependent self-erasing material (TDSEM) for secure information encryption.
  • To investigate the material's responsiveness to pH and its potential for anti-counterfeiting applications.

Main Methods:

  • In-situ synthesis of gold nanoclusters on cellulose nanocrystals (CNC) functionalized with fluorescein isothiocyanate.
  • Utilizing urease enzyme within the TDSEM for time-dependent degradation and information erasure.
  • Encoding information via HCl/urea introduction and modulating fluorescence color (red to orange to green) with urea concentration.
Keywords:
Cellulose nanocrystalDual functionsInformation encryptionSelf-erasingTime-dependent

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Main Results:

  • The TDSEM exhibited excellent pH responsiveness, cyclic stability, and durability.
  • Information was successfully encoded and automatically erased over time.
  • Tunable fluorescence intensity and color transition (red-orange-green) allowed for time-controlled information retrieval within 22 minutes.
  • Dual time and color-based encryption enhanced information confidentiality.

Conclusions:

  • The developed TDSEM offers a novel approach to information encryption and anti-counterfeiting.
  • The material's time-dependent and color-varying properties provide a unique "time color key" for secure data decryption.
  • This research paves the way for advanced secure information storage and anti-counterfeiting technologies.