Optical Nanomaterials and Enabling Technologies for High‐Security‐Level Anticounterfeiting

作者：Wei Ren, Gungun Lin, Christian Clarke, Jiajia Zhou, Dayong Jin · 发表于：Advanced Materials · 年份：2019 · DOI：10.1002/adma.201901430 · 被引用次数：604 · 研究领域：Nanocluster Synthesis and Applications、Luminescence and Fluorescent Materials、Carbon and Quantum Dots Applications

Optical nanomaterials have been widely used in anticounterfeiting applications. There have been significant developments powered by recent advances in material science, printing technologies, and the availability of smartphone-based decoding technology. Recent progress in this field is surveyed, including the availability of optical reflection, absorption, scattering, and luminescent nanoparticles. It is demonstrated that advances in the design and synthesis of lanthanide-doped upconversion nanoparticles will lead to the next generation of anticounterfeiting technologies. Their tunable optical properties and optical responses to a range of external stimuli allow high-security level information encoding. Challenges in the scale-up synthesis of nanomaterials, engineering of assessorial devices for smart-phone-based decryption, and alignment to the potential markets which will lead to new directions for research, are discussed.