948390.fig.002a
(a)
948390.fig.002b
(b)
948390.fig.002c
(c)
948390.fig.002d
(d)
Figure 2: Functionalization steps of the crystalline silicon. (a) Oxidation and activation of -OH groups. (b) Reaction with bifunctional GA linker. (c) Binding of protein A to GA. (d) Functionalized microwell ready for the binding to IgG.