Pixelated Physical Unclonable Functions through Capillarity-Assisted Particle Assembly.

ABSTRACT: Recent years have shown the need for trustworthy, unclonable, and durable tokens as proof of authenticity for a large variety of products to combat the economic cost of counterfeits. An excellent solution is physical unclonable functions (PUFs), which are intrinsically random objects that cannot be recreated, even if illegitimate manufacturers have access to the same methods. We propose a robust and simple way to make pixelated PUFs through the deposition of a random mixture of fluorescent colloids in a predetermined lattice using capillarity-assisted particle assembly. As the encoding capacity scales exponentially with the number of deposited particles, we can easily achieve encoding capacities above 10⁷⁰⁰ for sub millimeter scale samples, where the pixelated nature of the PUFs

SUBMITTER: Meijs ZC 

PROVIDER: S-EPMC10658447 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature