Solid-Phase Immunoassay of Polystyrene-Encapsulated Semiconductor Coreshells for Cardiac Marker Detection

Figure 2

SEM images of carboxylated polystyrene nanoparticles: (a) PS-COOH #1, (b) PS-COOH #2 with one-step batch polymerization, (c) PS-COOH #3, and (d) PS-COOH #4 with two-step polymerization.

(a)

(b)

(c)

(d)