Development of highly sensitive and selective lafeo3 thick flim chemiresistive trace formaliine gas sensor

Abstract

Gas sensor or we can say gas detection instruments are increasingly needed for industrial, health, and safety, environment monitoring and process control. To meet this demand, considerable research into new sensors is underway, including efforts to enhance the performance of traditional devices, such as resistive metal oxide sensor, through nanoengineering. Metal oxide sensor have been utilized for several decades for low cost detection of combustible and toxic gases. However, issues with sensitivity, selectivity, and stability have limited their uses, often in favor of more expensive approaches. Recent advance in nanomaterials provide the opportunity to dramatically increase the response of these materials, as their performance is directly related to exposed surface volume. The recent availability of various metal oxide materials is high surface area nano-powder from, as well as implementation of newly developed nanofabrication techniques, offer tremendous opportunities for sensor manufacturers.