Low Cost and Easy Validation Anticounterfeiting Plasmonic Tags Based on Thin Films of Metal and Dielectric.
Antonio FerraroMauro Daniel Luigi BrunoGiuseppe PapuzzoRosa VarcheraAgostino ForestieroMaria Penolope De SantoRoberto CaputoRiccardo Cristoforo BarberiPublished in: Nanomaterials (Basel, Switzerland) (2022)
Multilevel anticounterfeiting Physical Unclonable Function (PUF) tags based on thin film of silver (Ag), Zinc Oxide (ZnO) and PolyVinylPyrrolidone (PVP), are experimentally demonstrated and validated. We exploit the low adhesion of silver to glass and consequent degradation during ZnO deposition to induce morphological randomness. Several photographs of the tag surfaces have been collected with different illumination conditions and using two smartphones of diverse brand. The photos were analyzed using an image recognition algorithm revealing low common minutiae for different tags. Moreover, the optical response reveals peculiar spectra due to labels of plasmonic nature. The proposed systems can be easily fabricated on large areas and represent a cost-effective solution for practical protection of objects.
Keyphrases
- low cost
- visible light
- quantum dots
- gold nanoparticles
- deep learning
- room temperature
- single molecule
- biofilm formation
- reduced graphene oxide
- silver nanoparticles
- energy transfer
- machine learning
- physical activity
- high resolution
- density functional theory
- escherichia coli
- high speed
- label free
- mass spectrometry
- light emitting