Figure 2
From: Accelerating Gas Adsorption on 3D Percolating Carbon Nanotubes
Electrical characteristics and gas-sensing behavior.
(a) Transfer characteristics of the 13-nm-thick composite-FET with Vg sweeping in DC or AP mode, with the arrows indicating the sweep direction. Insets: schematic of the DC and AP modes of Vg sweep. Dashed rectangle: effective detection window, EDW. (b) Electrical response of the composite sensor to 50 ppm NO2 in DC or AP mode, with the arrow indicating the time point for the sensor to be exposed to NO2. In the DC mode Vg is fixed at 20 V, while in the AP mode the train of the Vg pulses is +20 V/−20 V.
