▎ 摘　　要

NOVELTY - Physical unclonable function (PUF), comprises layer of a 2D material having a top surface containing creases, and a substrate carrying and facing a bottom surface of layer of two-dimensional (2D) material. USE - Physical unclonable function (PUF). ADVANTAGE - The physical unclonable function is a physical entity embodied in a physical structure with inherent, distinct, and fingerprint-like features, ensures its uniqueness and security of identification, which makes the PUFs difficult to repeat and/or reproduce, so that skilled person readily recognizes, a unique identifier (or, UID) is an identifier that is guaranteed to be unique among all identifiers used for those objects and for a specific purpose. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: A method for fabrication of the PUF, which involves: disposing a substantially planar layer of a 2D material on a substantially planar surface of a substrate made of a pre-determined material to form a first stack that includes the substrate carrying substantially planar layer; and changing a geometrical characteristic of the substrate to crumple the substantially planar layer to form a second stack containing substrate and a crumpled layer of the 2D material that has a top surface containing creases. A method for authentication of the PUF, which involves: generating a first optical image of the top surface containing creases; storing image in on a tangible, non-transitory storage medium at a first moment of time; generating a second optical image of the top surface containing creases at a second moment of time that is subsequent to the first moment of time; and comparing the second image with the first image with the use of a depthwise-separable convolution network.