CD Bioparticles provides a comprehensive list of upconverting nanoparticles with different surface ligands as well as variable emission range. Our products contain NaYREF4 (RE:Yb, Er, Tm, Gd, Mn, Lu) with Yb3+ as sensitizer and Er3+ or Tm3+ as activator. Upconverting nanoparticles are able to convert near infrared radiations with lower energy into visible radiations with higher energy via a nonlinear optical process. The doping concentrations and the size of upconverting nanoparticles can be customized based on your specific requirements.