马朗戈尼效应
计算机科学
利用
毛细管作用
阴影照相术
材料科学
纳米技术
物理
激光器
光学
机械
对流
计算机安全
复合材料
作者
Changgyun Moon,Pavan Pujar,Srinivas Gandla,Byungjun So,Sunjong Lee,Dong‐Min Kim,Kon‐Woo Kwon,Sunkook Kim
标识
DOI:10.1038/s43246-023-00424-w
摘要
Abstract Recent advances in anticounterfeiting technology highlight the importance of functional materials with innovative processing methods for achieving robust anticounterfeiting tags. Here, we report a fabrication approach that enables the formation of randomly oriented MoS x or MoO x clusters of unpredictable shapes for use as anticounterfeiting tags. We exploit the combined effects of capillary and Marangoni flows to drive solute in a pre-deposited wet film that produces random clusters, creating tags. The reading of these tags is achieved using high-speed confocal laser microscopy, which allows for the extraction of complex topographies in seconds. The digitization of the tags involves converting height profiles into grayscale images, followed by the application of mathematical tools and the von Neumann debiasing technique. The extracted keys are subjected to the NIST statistical test, which consists of six tests to confirm the randomness of the generated keys. The recent advancements in anticounterfeiting technology highlight the importance of functional materials with innovative processing methods to achieve robust anticounterfeiting tags.
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