Integrated sensor array for gas analysis in combustion atmospheres

Structural and optical properties of Langmuir—Blodgett films of a Schiff base coordination polymer: A material for hydrocarbon vapor sensing

“…60 s) with the change in the resonance curve being proportional to vapor concentration. These results compare favorably with those obtained using metal oxide sensors [14]. For example, Getino et al used 16-element sensor arrays to measure changes in the conductivity of evaporated Pd, Al and Pt metal oxide films.…”

Solitary surfactant assisted morphology dependent chemiresistive polyaniline sensors for room temperature monitoring of low parts per million sulfur dioxide

“…In accordance with the literature, these sensing responses are comparable and better than earlier reported values with less recovery time . Unlike previously reported sensors this PAN sensor works at room temperature and can detect a low parts per million level of SO 2 . Thus, this reported PAN NN based sensing device promises to be a better substitute for conventional sensors due to its room temperature operation, low cost, better sensing response, shorter recovery time, stability and selectivity.…”

“…Recently, nanostructured materials due to their high surface to volume ratio, have attracted a lot of interest for chemiresistor type SO 2 sensors. For the last few decades, chemiresistors based on various metal oxides such as tin oxide (SnO 2 ), tungsten oxide (WO 3 ), zinc oxide (ZnO), titanium oxide (TiO 2 ), cerium oxide (CeO 2 ) and their hybrids have been investigated. But their high temperature operation (>200 °C) needs higher power consumption and complex circuitry due to the addition of micro sized heaters and causes coalescence of grain boundaries which avert the attainment of stable nanostructured material.…”

Cross-Reactive Chemical Sensor Arrays

“…Tin oxide sensor arrays have been used to detect a variety of different analytes under varying conditions. Three major groups of analytes for these arrays are toxic gases, ,,,, volatile organic compounds (VOCs), ,,,,,− and food-related species. ,,− Toxic gases and VOCs are important components of industrial emissions, and monitoring such analytes can be challenging with a single sensor approach due to drift and interferences. Food analysis benefits from cross-reactive arrays because the technique is noninvasive and does not require breaking down a complex mixture into its individual components merely to establish whether the sample has changed or not from a prior batch.…”