Unclonable MXene Topographies as Robust Anti‐Counterfeiting Tags via Fast Laser Scanning and Siamese Neural Networks (Adv. Mater. Technol. 19/2023)

Anti-Counterfeiting Tags High dimensional Ti3C2Tx MXene topographies are generated in a unclonable manner, which can be read with layer-by-layer laser confocal imaging and reconstructed to 3D PUF keys, as demonstrated by Lin Jing, Qian Xie, Po-Yen Chen, and co-workers in article 2300568. Pairing with a pick-and-check strategy and a self-trained Siamese neural network, this anti-counterfeiting technology features ultrahigh encoding capacity, fast processing, and high authentication accuracy under various external disturbances including tag rotations, dislocations, and mechanical/thermal stresses.