Journal of Sensors / 2012 / Article / Fig 4

Research Article

Role of the Material Electrodes on Resistive Behaviour of Carbon Nanotube-Based Gas Sensors for H 2 S Detection

Figure 4

Curve of the resistance variation ( Ξ” 𝑅 = 𝑅 𝑓 βˆ’ 𝑅 0 ) versus time where 𝑅 0 is the resistance of the sensor exposed to pure N2, and 𝑅 𝑓 is the maximum value of resistance. The H2S concentrations (in N2) are: (a) 10, (b) 20, (c) 40, (d) 60, (e) 80, and (f) 100 ppm, respectively.
359271.fig.004a
(a)
359271.fig.004b
(b)
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(c)
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(d)
359271.fig.004e
(e)
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(f)