Gas Sensors Based on Locally Heated Multiwall Carbon Nanotubes Decorated with Metal Nanoparticles

Figure 1

Schematic drawings of the chemical resistor sensor configuration based on suspended nanostructures bridging the gap between the electrodes: before (a) and after (b) metallic nanoparticles deposition by sputtering; (c) oxidized silicon substrates (1), gold patterned electrodes (2), wire-bonding connections (3), and the gap with the carbon nanotubes (4) compose the devices tested using the microreactors.

(a)

(b)

(c)