Journal
SMALL STRUCTURES
Volume 2, Issue 9, Pages -Publisher
WILEY
DOI: 10.1002/sstr.202100043
Keywords
anticounterfeit tags; barcodes; plasmonic nanostructures; physically unclonable functions; QR codes; radio-frequency identification
Funding
- Research Corporation for Scientific Advancement
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This article discusses the development of authentication strategies to enhance the security of goods, introducing the use of designer plasmonic nanostructures in anti-counterfeit tags, and focusing on the shift towards covert anti-counterfeit tags defined by EC metrics.
Counterfeit goods are pervasive in many sectors of our economy, necessitating development of authentication strategies that enhance security of goods and prevent against economic losses. Unique images and barcodes have proven useful but are susceptible to duplication. In contrast, intrinsically random features can be difficult to replicate and represent an alternative if their encoding capacity (EC) is sufficiently high and their analysis facile. Herein, the creation of such anticounterfeit tags with designer plasmonic nanostructures -those whose optical properties are precisely controlled by nanostructure size and shape -as one promising authentication strategy and also reflects on the metrics that define EC as there is a shift toward covert anticounterfeit tags is discussed.
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