Skip to main content
Account
Figure 5 | Nanoscale Research Letters

Figure 5

From: Real-time detection of chlorine gas using Ni/Si shell/core nanowires

Figure 5

The sensor response of the Ni-Si NW-based sensor to Cl 2 gas. (a) SEM image of a sensor transducer with two parallel channels of single Ni-Si NWs. (b) The IV characteristics of the Ni-Si NWs before and after rapid thermal annealing (RTA) process. For comparison, devices based on bare Ni NWs were also prepared (inset). (c) Sensor response of our Ni-Si NW-based device to 5 and 20 ppm of chlorine gas. The Ni-Si NW-based sensor device showed much higher response compared to the bare Ni NW-based device. The apparent noise suppression for the Ni NW device was due to the normalization of sensor response by the initial current value Iair. The initial current value Iair for the Ni-Si NW and Ni NW sensor was 0.18 and 152 μA, respectively. The inset shows the expanded view of the sensor response for the Ni NW-based device.

Back to article page

Navigation