Multi-Colour Upconversion Micro-Rods For Anti-Counterfeiting Applications
According to The International Anti-Counterfeiting Coalition, counterfeiting is a $600 billion a year problem and the World Customs Organization estimates that 5% to 7% of all goods traded in the global market are counterfeit. Barcoding materials have attracted much attention for anti-counterfeiting applications. However, the high cost of material fabrication, low reaction yields, complex instrumentation set-up and high background noise have so far hindered a widespread use of this technology.
Lanthanide-doped upconversion materials may provide a solution for the above mentioned problems. This technology relates to materials with strong upconversion luminescence for instant decoding under 980nm laser. The multicolor micro-rods are dispersible in dimethyl sulfoxide solvent providing a transparent ink under ambient light conditions.
Stage of Development
TRL 5. Technology validated in relevant environment.
Security ink, encryption tags and analytical assays.
Know-how. Available for licensing or possible provision of material for commercial use.
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