Multiplex Immunoassays of Plant Viruses Based on Functionalized Upconversion Nanoparticles Coupled with Immunomagnetic Separation
Figure 5
Room temperature upconversion fluorescence spectra of three different UCNPs/SiO2 in PBS under 980 nm excitation. NaYbF4: Tm/SiO2 (curve 1), NaYbF4: Ho/SiO2 (curve 2), and NaYbF4: Er/SiO2 (curve 3). Inset is the photo of the corresponding UCNPs/SiO2 in PBS excited with a 980 nm laser.
