A novel design and fabrication of self-heated In2O3 nanowire gas sensor on glass for ethanol detection

Recent Advances in Integrating 1D Nanomaterials into Chemiresistive Gas Sensor Devices

“…[ 50 ] The In 2 O 3 ‐based sensor was shown to be selective toward ethanol. [ 50a ] The position of the patterned electrode substrate from the source material during thermal CVD was found to affect NO 2 sensing performance of Zn 2 SnO 4 , which was attributed to Sn depletion when the substrate is far from the source resulting in more defects in Zn 2 SnO 4 NWs. [ 12a ] By contrast, the sensing performance of ZnO NW networks was not influenced by the substrate to source distance.…”

“…The NW/NW junctions enable self-heating thus allowing the NW network sensors to function at a lower power supply, e.g., lowering the activation power consumption for gas sensing to only 1.06 mW. [50,51] The NW density can be controlled by the spacing between the head-to-head electrodes as shown in Figure 5b (2). Ngoc et al observed that over a longer electrode gap distance, only the NWs that grew sufficiently long will bridge the gap.…”

Surface-Modified In2O3 for High-Throughput Screening of Volatile Gas Sensors in Diesel and Gasoline

“…Metal oxide semiconductor (MOS) has become one of the most studied and widely used gas-sensitive materials due to its advantages of high sensitivity, low price, easy integration, and accessible collection and analysis of measurement signals [ 6 , 7 , 8 ]. The sensing mechanism is the contact between gas molecules and metal oxide semiconductors, the exchange of electrons on the semiconductor surface, and the absorption and desorption of gas, which will cause a specific change in the semiconductor resistance.…”

Conductive polythiophene/graphitic-carbon nitride nanocomposite for the detection of ethanol mixing in petrol

“…The development of chemical/gas/ vapour sensors has recently focused heavily on carbon nanomaterials, metal oxide semiconductors, conductive polymers (CPs) and their nanocomposites. [5][6][7][8][9][10][11][12][13][14][15][16][17][18] Due to its extraordinary functionalities through regulated charge transfer process, adjustable electrical conductivities, and self-resistivity changes upon exposure to various gases, conducting polymers have long been sought aer as chemiresistor materials. [16][17][18][19][20][21] Due to its extraordinary functionalities through regulated charge transfer process, adjustable electrical conductivities along with selfresistivity which alters when exposed to variety of gases, CPs have for a long time been used as chemiresistor.…”

“…[16][17][18][19][20][21] Due to its extraordinary functionalities through regulated charge transfer process, adjustable electrical conductivities along with selfresistivity which alters when exposed to variety of gases, CPs have for a long time been used as chemiresistor. [9][10][11][12][13] Polythiophene (PTh) being chemically, thermally and environmentally highly durable is amongst the most researched CPs. PTh and its derivatives stood out among gas sensors owing to their distinctive doping and de-doping mechanisms that produce a change in electrical conductivity when exposed to various chemicals and gases.…”