Figure 7.

aSchematic illustration of the ZnO nanowire gas sensor device. The gap between two Pt fingers is 0.04 mm;bphotograph of the ZnO nanowire gas sensor. Gas sensor was connected to the measurement circuit using gold wires

Qurashi et al. Nanoscale Research Letters 2009 4:948-954   doi:10.1007/s11671-009-9317-7