Chaotic conductive polymer patterns on MoS<sub>2</sub> for Physical Unclonable Functions
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초록
내용
Physically Unclonable Functions (PUF) are safety measures and security systems that have emerged in response to the growing risk of hacking or information leakage. In this study, the organic crystalline material 2,5-Dibromo-3,4-ethylenedioxythiophene (DBEDOT) was used to create various shapes on MoS2 patterns, considering its surface energy characteristics. The organic material is a crystalline monomer that can be solid-state polymerization, leading to the formation of the conductive polymer poly(3,4-ethylenedioxythiophene) (PEDOT) at low temperature. The monomers formed on the pattern and the polymerized conductive polymer were confirmed using raman spectroscopy. PEDOT is a heat-absorbing that can be easily distinguished by infrared imaging camera under certain thermal conditions. As a result, images formed in random shapes can be captured and applied for non-replicable applications or as security labels, possessing excellent randomness.