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Unclonable Plasmonic Security Labels Achieved by Shadow-Mask-Lithography-Assisted Self-Assembly
Yuanhui Zheng1,2, Cheng Jiang1, Soon Hock Ng3,4
1School of Chemistry and Australian Centre for NanoMedicine, The University of New South Wales, Sydney, NSW, 2052, Australia.
Advanced Materials (Deerfield Beach, Fla.)
|January 30, 2016
Summary
A novel plasmonic anti-counterfeiting strategy uses unique molecule-embedded nanoparticles for secure information encoding. These robust security labels are easily decoded, offering an unclonable solution against product fraud.
Area of Science:
- Materials Science
- Nanotechnology
- Optics
Background:
- Growing need for robust anti-counterfeiting technologies.
- Limitations of current security features in terms of uniqueness and replicability.
- Potential of plasmonic nanoparticles for advanced information storage.
Purpose of the Study:
- To develop an unclonable plasmonic anti-counterfeiting strategy.
- To utilize molecule-embedded metal@silica core-shell nanoparticles as information carriers.
- To create secure, highly unique, and technically unreplicable security labels.
Main Methods:
- Fabrication of plasmonic security labels using shadow-mask-lithography-assisted self-assembly.
- Embedding molecules within metal@silica core-shell nanoparticles to serve as information carriers.
- Development of a decoding method using portable microscopes.
Main Results:
- Demonstration of an unclonable plasmonic anti-counterfeiting strategy.
- Production of security labels with multiple sets of highly unique coding information.
- Robust and rapid decoding of security information (within seconds) using portable microscopes.
Conclusions:
- The developed strategy provides a highly secure and unique method for anti-counterfeiting.
- The use of molecule-embedded nanoparticles offers a robust platform for information encoding.
- The technology is practical for real-world applications due to its ease of decoding.
