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Printed multilayer microtaggants with phase change nanoparticles for enhanced labeling security.

Binh Duong1, Helin Liu, Cheng Li

  • 1Department of Biomedical Engineering, Worcester Polytechnic Institute , Worcester, Massachusetts 01609, United States.

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New covert taggants using phase change nanoparticles offer reliable object identification and anti-counterfeiting solutions. These multilayer materials provide high capacity and covertness for commercial and forensic applications.

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Forensic Science

Background:

  • Growing need for reliable object identification and anti-counterfeiting measures.
  • Limitations of existing taggant technologies in capacity and covertness.

Purpose of the Study:

  • To develop a novel multilayer covert taggant system.
  • To enhance security features for commercial and forensic applications.

Main Methods:

  • Utilizing phase change nanoparticles (metals and eutectic alloys) with distinct melting temperatures.
  • Incorporating nanoparticles, fluorescent dye, and matrix materials into printed micro-/macrofeatures.
  • Creating taggants with integrated thermal, fluorescence, and structural signatures.

Main Results:

  • Demonstration of a multilayer taggant system with enhanced security.
  • Achieved high labeling capacity and coding readiness.
  • Exhibited covertness suitable for various applications.

Conclusions:

  • The developed phase change nanoparticle taggants offer a robust solution for fraud deterrence and object identification.
  • Multilayer taggants significantly improve security levels in commercial and forensic fields.
  • The system's large capacity, coding potential, and covert nature address critical security challenges.