Optical identification using imperfections in 2D materials

  title={Optical identification using imperfections in 2D materials},
  author={Yameng Cao and Alexander J. Robson and Abdullah Alharbi and Jonny Roberts and Christopher S. Woodhead and Yasir J Noori and Ram{\'o}n Bernardo-Gavito and Davood Shahrjerdi and Utz Roedig and Vladimir I. Falko and Robert James Young},
  journal={arXiv: Mesoscale and Nanoscale Physics},
The ability to uniquely identify an object or device is important for authentication. Imperfections, locked into structures during fabrication, can be used to provide a fingerprint that is challenging to reproduce. In this paper, we propose a simple optical technique to read unique information from nanometer-scale defects in 2D materials. Flaws created during crystal growth or fabrication lead to spatial variations in the bandgap of 2D materials that can be characterized through… Expand

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