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Dengchong Feng1, Qi Guo1, Zhenjie Huang1

  • 1Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Guangdong Engineering Technology Research Center for High-Performance Organic and Polymer Photoelectric Functional Films, School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, China.

Advanced Materials (Deerfield Beach, Fla.)
|March 6, 2024
PubMed
Summary

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This summary is machine-generated.

Researchers developed a dynamic encryption material using viscoelasticity-controlled polymer wrinkling. This novel approach offers advanced anti-counterfeiting solutions with visible, multi-stage information that can be manually activated.

Area of Science:

  • Materials Science
  • Polymer Science
  • Optics

Context:

  • Conventional static encryption methods face challenges due to evolving counterfeit techniques.
  • There is a growing need for advanced anti-counterfeiting technologies with dynamic and multi-stage information capabilities.

Purpose:

  • To introduce viscoelasticity-controlled relaxation in a bilayer wrinkling system for dynamic encryption.
  • To develop a novel polymer-based material for advanced optical anti-counterfeiting applications.

Summary:

  • A dynamic encryption material was constructed by regulating hydrogen bond networks in a polymer, enabling viscoelasticity-controlled relaxation in a bilayer wrinkling system.
  • The wrinkling surface manipulates light through three distinct stages (frosted glass, structural color, mirror reflection) during dynamic relaxation.
Keywords:
dynamic encryptiontime‐resolved optical encryptionviscoelasticity‐controlled relaxationwrinkling surface

Related Experiment Videos

  • UV irradiation controls the viscoelasticity, allowing tunable wrinkle wavelength and relaxation rates for dynamic patterns and time-resolved encryption.

    • Impact:

    • This work provides a new dimension for dynamic information encryption in practical, daily applications, such as anti-counterfeiting labels.
    • The developed material offers manual activation and naked-eye identification, surpassing existing time-resolved encryption materials in utilization potential.
    • The dynamic hydrogen bond network strategy demonstrates versatility and offers theoretical guidance for future smart display and optical anti-counterfeiting materials.