Up-conversion photonic markers are a class of luminescent materials with unique optical characteristics, exhibiting excellent stability and posing minimal environmental risk. Being irradiated with infrared light, up-conversion photonic markers demonstrate bright luminescence in the visible part of the electromagnetic spectrum with extremely high signal-to-noise ratio. At a later time, the markers are detected again, for example, via the high-throughput, error-free conveyer-based sorting of plastics or in the identification of counterfeited products.
Scientist present important materials R&D leading to commercialized products using the up-conversion photonic markers based technology for plastic sorting and authentication
- Photonic markers synthesized at the KIT
- Industrial samples marked with trace amount of up-conversion photonic markers for applications in sorting and authentication