Figure 1
From: Real-time detection of chlorine gas using Ni/Si shell/core nanowires
Schematic diagram describing Ni-Si NW assembly and Cl 2 gas detection. (a) Growth of Ni-Si NWs and their assembly on molecularly patterned substrates. Si NW forest is grown via CVD process (left). Ni coating is performed by ALD process (center). The NWs are sonicated in DI water and drop-cast onto a molecularly patterned substrate (right). The dimensions in the cross-sectional view are not to scale. (b) Sensor fabrication and Cl2 gas sensing experiments. Electrodes are formed on the assembled Ni-Si NWs and electrical connections are made (left, center). When the sensor is exposed to Cl2 gas, conductance change is monitored (right).