A sensor array based on trigonal-selenium nanowires for the detection of gas mixtures

A simple array-type gas sensor was fabricated using trigonal-selenium nanowires and its ability to detect volatile organic compounds was investigated. The time delays between sensor signals resulting from the varying diffusion velocities of gaseous organic compounds were assessed. The analysis of a model mixture of acetone and benzene was demonstrated. This sensor can operate at room temperature without any heating requirements and shows potential as a device of low power consumption and a low cost gas analysis system capable of differentiating the components of mixed gases.