Figure 2
Nanowire-based detection of single viruses.
(Left) Schematic shows two nanowire devices, 1 and 2, where the nanowires are modified with different antibody receptors. Specific binding of a single virus to the receptors on nanowire 2 produces a conductance change.
(Right) Characteristic of the surface charge of the virus only in nanowire 2. When the virus unbinds from
the surface the conductance returns to the baseline value (image credit: Proc. Nat. Acad. Sci. 101 14017).