Sandwich Immunoassays of Multicomponent Subtrace Pathogenic DNA Based on Magnetic Fluorescent Encoded Nanoparticles

Figure 1

The fluorescence spectra of AFMFEM-1 and AFMFEM-2 (a): the picture in the upper right corner is the fluorescence spectra of QDs₁ and QDs₂; the hysteresis loops taken at 300 K for AFMFEM-1 and AFMFEM-2 (b); the zeta potential of AFMFEM (c); the TEM micrographs of AFMFEM (d).

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