NIR absorbing pigments and dyes
When a device containing Near Infra-Red (NIR) pigment or dye is viewed through an infrared camera a black or dark grey area will be seen, while traditional pigments and dyes are invisible. Specialized infrared detectors pick up this effect so a machine readable feature can be created. Because of these characteristics these pigments offer a huge variety of security solutions from QR codes to semi-disappearing pictures, the limit is only our fantasy. These materials have an excellent NIR absorbance from 700 nm to 1100 nm. At Luminochem we offer NIR absorbing materials for a variety of uses: we have water soluble, organic solvent soluble and insoluble products too.