Figure 2
From: A Competitive Bio-Barcode Amplification Immunoassay for Small Molecules Based on Nanoparticles
(A) UV/Vis spectra of the dispersion of the AuNPs probe and AuNPs solution. (B) TEM images of bare AuNPs. (C) AuNPs probes. (D) Zeta potentials (a) bare AuNPs, (b) AuNPs with the antibody complex, (c) AuNPs with the antibody-capture DNA complex, and (d) AuNPs with the antibody-capture DNA-barcode DNA complex.
