Figure 5.

The drain current (Id) versus drain voltage (Vd) curves (at Vg = 40 V) of the bare rGO-Au device, the same device with immobilized probe DNA, and the same device after hybridization of the complementary (a) or single-base mismatched (b) DNA strands (DNA concentration is 200 nM).

Dong et al. Nanoscale Res Lett 2011 6:60   doi:10.1007/s11671-010-9806-8