Binary temporal upconversion codes of Mn2+-activated nanoparticles for multilevel anti-counterfeiting

Optical characteristics of luminescent materials, such as emission profile and lifetime, play an important role in their applications in optical data storage, document security, diagnostics, and therapeutics. Lanthanide-doped upconversion nanoparticles are particularly suitable for such applications...

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Veröffentlicht in:Nature communications Jg. 8; H. 1; S. 1 - 7
Hauptverfasser: Liu, Xiaowang, Wang, Yu, Li, Xiyan, Yi, Zhigao, Deng, Renren, Liang, Liangliang, Xie, Xiaoji, Loong, Daniel T. B., Song, Shuyan, Fan, Dianyuan, All, Angelo H., Zhang, Hongjie, Huang, Ling, Liu, Xiaogang
Format: Journal Article
Sprache:Englisch
Veröffentlicht: London Nature Publishing Group UK 12.10.2017
Nature Publishing Group
Nature Portfolio
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639/301/357/354
639/638/549/2263
639/925/930/1032
Binary codes
Complexity
Counterfeiting
Cybersecurity
Data storage
Decoding
Emissions
Humanities and Social Sciences
Information processing
Information storage
Instrumentation
Irradiation
Lanthanides
Luminescence
Manganese
multidisciplinary
Multilevel
Nanoparticles
Optical properties
Radiation
Science
Science (multidisciplinary)
Service life assessment
Temporal variations
Upconversion
ISSN:2041-1723, 2041-1723
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Zusammenfassung:Optical characteristics of luminescent materials, such as emission profile and lifetime, play an important role in their applications in optical data storage, document security, diagnostics, and therapeutics. Lanthanide-doped upconversion nanoparticles are particularly suitable for such applications due to their inherent optical properties, including large anti-Stokes shift, distinguishable spectroscopic fingerprint, and long luminescence lifetime. However, conventional upconversion nanoparticles have a limited capacity for information storage or complexity to prevent counterfeiting. Here, we demonstrate that integration of long-lived Mn 2+ upconversion emission and relatively short-lived lanthanide upconversion emission in a particulate platform allows the generation of binary temporal codes for efficient data encoding. Precise control of the particle’s structure allows the excitation feasible both under 980 and 808 nm irradiation. We find that the as-prepared Mn 2+ -doped nanoparticles are especially useful for multilevel anti-counterfeiting with high-throughput rate of authentication and without the need for complex time-gated decoding instrumentation. Luminescent materials that are capable of binary temporal coding are desirable for multilevel anti-counterfeiting. Here, the authors engineer nanoparticles that produce binary color codes on different timescales by combining the long-lived luminescence of Mn 2+ with the relatively short-lived emission of lanthanides.
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ISSN:2041-1723
2041-1723
DOI:10.1038/s41467-017-00916-7