105138.fig.002a
(a)
105138.fig.002b
(b)
Figure 2: (a) The effect of hybridization on real-time conductance measured using a PNA-immobilized, Au-decorated SWNT-FET. Target DNA of a perfect match was added to the sample at the time marked with the arrow. Inset shows an AFM image of the device used for this experiment. (b) Evolution of electrical characteristics upon hybridization at = 100 mV.