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Area of Science:

  • Materials Science
  • Optics
  • Cryptography

Background:

  • Internet of Things (IoT) security is challenged by evolving adversaries.
  • Physical Unclonable Functions (PUFs) offer robust, counterfeit-resistant identification.
  • Existing PUF technologies require further advancements in security and capacity.

Purpose of the Study:

  • To develop a facile fabrication method for optical PUFs.
  • To leverage molecular self-assembly and symmetry breaking for PUF creation.
  • To evaluate the security and performance of the novel optical PUF.

Main Methods:

  • Fabrication of optical PUFs via spontaneous mirror symmetry breaking.
  • Utilizing racemic helical structures to generate chiroptical signals.
  • Characterization of encoding capacity, recognition rate, and reconfigurability.

Main Results:

  • The developed optical PUF exhibits high encoding capacity (∼10^13000).
  • The system demonstrates a precise recognition rate.
  • The PUF shows impressive reconfigurability for dynamic security applications.

Conclusions:

  • Spontaneous mirror symmetry breaking is a viable strategy for designing advanced optical PUFs.
  • This approach offers a promising solution for high-level security systems in the digital age.
  • The developed optical PUFs present a novel pathway for secure identification in IoT devices.