Anti-Stokes / up-converting pigments

Anti-Stokes/up-converting pigments

Anti-Stokes pigments are luminescent materials which are able to convert near infrared (NIR) laser light to visible (VIS) light. The anti-Stokes shift occurs when the emission is a shorter wavelength than the original excitation wavelength. Generally, the excitation wavelength is a sharply determined near infra-red laser light (980 nm or, in some cases, 940 nm). The effect shows up as a concentrated bright colour spot. We are able to provide anti-Stokes luminescent security pigments in the single digit micron and sub-micron range in order to enable offset printing.

These properties make anti-Stokes pigments highly effective for special applications in the field of authentication such as security printing, ceramics, paper, ink or polymer industries. We enable our customers to explore new ways of incorporating pigments into their materials, which can then be detected by sorting machines for accurate authentication. LuminoChem can produce pigments to a tightly controlled particle distribution curve and we also have the analytical equipment necessary to measure particle distribution curves.

Features and advantages

  • Applicable for paint, polymer, paper and ceramic industry
  • Excellent emission intensity
  • High stability
  • Good light fastness
  • Available in various particle size

 

We are always happy to discuss your specific requirements. Please contact us at sales@luminochem.com