材料科学
物理不可克隆功能
纳米技术
表面增强拉曼光谱
拉曼光谱
聚苯乙烯
等离子体子
纳米结构
平版印刷术
纳米颗粒
制作
光电子学
拉曼散射
计算机科学
密码学
光学
聚合物
病理
复合材料
物理
医学
替代医学
计算机安全
作者
Zilun Tang,Xiaopeng Liu,Xiaochun Liu,Jianyu Wu,Wenjing Lin,Xiaofeng Lin,Guobin Yi
标识
DOI:10.1002/adem.202101701
摘要
Herein this study, plasmonic‐patterned nanostructures are applied to fabricate unclonable anti‐counterfeiting labels. Patterned Au nanoparticles (AuNPs) are constructed by the skillful combination of diblock copolymer polystyrene‐block‐poly(4‐vinyl pyridine) (PS‐ b ‐P4VP) self‐assembly with shadow mask lithography to provide a simple and universal approach for large‐area fabrication of patterned nanostructures. The AuNP pattern can be made visible by increasing the nanoparticle size. A surface‐enhanced Raman spectroscopy (SERS) ‐ based physical unclonable function (PUF) security label with a large encoding capacity is fabricated by depositing malachite green (MG) on the surface. The broadening of the size distribution of the AuNPs after their growth and the increased disorder in their arrangement confer the security label with unique and unclonable characteristics. The as‐prepared optical PUF security label is read out by a confocal Raman spectrometer to extract binary codes, which are then authenticated through comparison. These SERS‐based PUF security labels, which combine patterning with stochastic spectral encoding, not only provide rich and diverse patterns but are also promising for anti‐counterfeiting applications in areas such as rigid silicon‐based optoelectronic materials and devices.
科研通智能强力驱动
Strongly Powered by AbleSci AI