Structural color-based physical unclonable function
Xiaofeng Lin , Daxiang Shi , Guobin Yi , Dingshan Yu
Responsive Materials ›› 2024, Vol. 2 ›› Issue (1) : 20230031
Structural color-based physical unclonable function
Commodity fraud poses significant economic and public health risks while jeopardizing market stability. A promising avenue for addressing this issue involves the incorporation of physical unclonable function (PUF) in anti-counterfeiting labels for commodity authentication purposes. PUFs are a large number of unbreakable security labels generated through a random process, which exhibit unique physical pattern responses that are impervious to replication. In particular, a novel kind of a PUF model, called structural color-based PUFs, combing the structural color characteristics of angle-dependent stability and brightness with unclonable property, offers unassailable encryption capabilities and serves as a formidable safeguard against forgery. This review undertakes a comprehensive summary of recent advancements in PUF technology leveraging structural color materials. Moreover, it provides a systematic description of the recognition and authentication technology employed in optical structural color PUFs. Finally, a prospective summary and outlook is proposed to explain existing challenges, and highlight potential developments in anti-counterfeiting technology incorporating structural color PUF labels.
photonic crystals / physical unclonable function / plasmonic metamaterials / structural color
2024 The Authors. Responsive Materials published by John Wiley & Sons Australia, Ltd on behalf of Southeast University.
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