Ethanol sniffing sensor with alcohol oxidase as gas recognition material

Children as young as six sniffing gas in Pikangikum.

Ethanol-assisted multi-sensitive poly(vinyl alcohol) photonic crystal sensor.

An ethanol-assisted method is utilized to generate a robust gelated crystalline colloidal array (GCCA) photonic crystal sensor. The functionalized sensor efficiently diffracts the visible light and responds to various stimuli involving solvent, pH, cation, and compressive strain; the related color change can be easily distinguished by the naked eye.

Pattern Recognition for Selective Odor Detection with Gas Sensor Arrays

This paper presents a new pattern recognition approach for enhancing the selectivity of gas sensor arrays for clustering intelligent odor detection. The aim of this approach was to accurately classify an odor using pattern recognition in order to enhance the selectivity of gas sensor arrays. This was achieved using an odor monitoring system with a newly developed neural-genetic classification a...

Multi-walled Carbon Nanotube Film Sensor for Ethanol Gas Detection

A kind of resistance-type multi-wall carbon nanotubes (MWNTs) film sensor was fabricated using layer-by-layer self-assembly, and an astable multivibrator circuit was designed for resistance measurement. The electrical properties of MWNTs film sensor were investigated, and also its ethanol gassensing properties with varying gas concentration are characterized at room temperature. The experiment ...

ZnO:Al Thin Film Gas Sensor for Detection of Ethanol Vapor

The ZnO:Al thin films were prepared by RF magnetron sputtering on Si substrate using Pt as interdigitated electrodes. The structure was characterized by XRD and SEM analyses, and the ethanol vapor gas sensing as well as electrical properties have been investigated and discussed. The gas sensing results show that the sensitivity for detecting 400 ppm ethanol vapor was ~20 at an operating tempera...