Flexible Physical Unclonable Functions Based on Non-deterministically Distributed Dye-Doped Fibers and Droplets
Year: 2024
Authors: Bruno MDL., Lio GE., Ferraro A., Nocentini S., Papuzzo G., Forestiero A., Desiderio G., De Santo MP., Wiersma DS., Caputo R., Golemme G., Riboli F., Barberi RC.
Autors Affiliation: Univ Calabria, Phys Dept, I-87036 Arcavacata Di Rende, CS, Italy; CNR, Ist Nanotecnol CNR Nanotec, I-87036 Arcavacata Di Rende, CS, Italy; Univ Florence, Phys Dept, I-50019 Sesto Fiorentino, FI, Italy; Univ Florence, European Lab Nonlinear Spect LENS, I-50019 Sesto Fiorentino, FI, Italy; Ist Nazl Ric Metrolog INRiM, I-10135 Turin, Italy; CNR ICAR, Inst High Performance & Networking, I-87036 Arcavacata Di Rende, CS, Italy; Univ Elect Sci & Technol China, Inst Fundamental & Frontier Sci, Chengdu 610054, Peoples R China; Univ Calabria, Environm Engn Dept, I-87036 Arcavacata Di Rende, CS, Italy; CNR INO Natl Inst Opt, I-50019 Sesto Fiorentino, FI, Italy.
Abstract: The development of new anticounterfeiting solutions is a constant challenge and involves several research fields. Much interest is currently devoted to systems that are impossible to clone, based on the physical unclonable function (PUF) paradigm. In this work, a new strategy based on electrospinning and electrospraying of dye-doped polymeric materials is presented for the manufacturing of flexible free-standing films that embed simultaneously different PUF keys. The proposed films can be used to fabricate novel anticounterfeiting labels having three encryption levels: (i) a map of fluorescent polymer droplets, with random positions on a dense yarn of polymer nanofibers, (ii) a characteristic fluorescence spectrum for each label, and (iii) the unique speckle patterns that every label produces when illuminated with coherent laser light shaped in different wavefronts. The intrinsic uniqueness introduced by the manufacturing process encodes enough complexity into the optical anticounterfeiting tag to generate thousands of cryptographic keys. The simple and cheap fabrication process as well as multilevel authentication makes such colored polymeric unclonable tags a practical solution in the secure protection of goods in our daily life.
Journal/Review: ACS APPLIED MATERIALS & INTERFACES
Volume: 16 (28) Pages from: 37063 to: 37072
More Information: M.D.L.B., M.P.D.S., and R.C.B. thank Project Poc CHAOS, CUP C28H23000300002, Unical Pathways (UP), Piano Nazionale di Ripresa e Resilienza, NextGenerationEU. The LENS research group thanks the FASPEC (Fiber-Based Planar Antennas for Biosensing and Diagnostics) and Project Complex Photonic Systems (DFM.AD005.317). The publication was made with the contribution of G.E.L. with a research contract co-funded by the European UnionPON Research and Innovation 2014-2020 in accordance with Article 24, paragraph 3a, of Law No. 240 of December 30, 2010, as amended, and Ministerial Decree No. 1062 of August 2021. This work was partially supported by Project SERICS (PE00000014) under the MUR National Recovery and Resilience Plan funded by the European Union – NextGenerationEU.KeyWords: physical unclonablefunction (PUF); anticounterfeitingtags; electrospinning; electrospray; speckleDOI: 10.1021/acsami.4c07021Connecting to view paper tab on IsiWeb: Click here
