Disordered Patterns of Conjugated Polymer with Thermal Infrared for Physical Unclonable Functions
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초록
내용
Physical unclonable functions (PUFs) are a secure authentication system that protects against the risk of hacking and data breaches. In this study, we propose a simple method for patterning materials for PUF code formation and verification. The first method exploits differences in surface properties. MoS2 patterns are deposited on top of a SiO2 layer to induce the difference surface properties. Next, DBEDOT is dip-coated to form a random pattern. This material is polymerized into poly(3,4-ethylenedioxythiophene) (PEDOT) via solid-state polymerization (SSP) at low temperatures. In the second method, we designed and synthesized a monomer that polymerizes into PEDOT by UV and applied it as a PUF material. These properties made it simple to form random patterns of PEDOT using a laser. Samples were analyzed and data collected using a thermal imaging camera. Therefore, it can be easily formed into random patterns, and the properties of conductive polymers make it a highly secure material.