Figure 5.
Effect of the radius of the bead on the rate of binding of BCA to ligand-functionalized beads. We levitated functionalized PEGA beads in cuvettes in the presence of 130 μM BCA dissolved in the standard levitation buffer. We plot the average levitation height for eight large beads (<R> = 166 ± 5 μm), and eight small beads (<R> = 136 ± 7 μm) versus time, and show the predictions of the reaction diffusion model (the dotted and dashed lines).