High performance of a gas identification system using sensor array and temperature modulation

Mechanism of O3 sensing on Cu2O(111) surface: First principle calculations

“…To improve the selectivity of these gas sensors our team has made the choice to develop multi-sensor devices. The principle is to associate several sensors with different sensitive layers and to analyze the different responses by numerical post-treatment such as neuronal network [7].…”

Sample handling for electronic nose technology: State of the art and future trends

“…Known approaches of realization of this idea are temperature modulation, thermal cycling or temperature programming [14,[111][112][113][114][115], spectral-selective illumination [14,116]. To illustrate, in [115] it was shown (by using a chemiresistor microsensor array) that responses of one and the same sensor obtained in different temperature ranges carry different analytical information; this enables to obtain additional information using the same sensors.…”

Chemical route to synthesis of mesoporous ZnO thin films and their liquefied petroleum gas sensor performance

“…At higher temperatures (>573 K), the amount of the adsorbed oxygen is less and therefore a lesser amount of ionic species are formed. Therefore, in the presence of LPG, the probability of the reduction reaction of the gas with chemisorbed oxygen is less, which results in a small change in resistance at higher temperatures and decreases the gas response [26,29]. Therefore, the chemically deposited ZnO thin film operates as a sensing element to the LPG only within a specific temperature window.…”