WO3-x Nanorod Arrays Based Sensors with High Sensitivity and Quick Response for Detecting Pollutants

Abstract

ABSTRACTTungsten oxide nanorod arrays deposited on the cylindrical substrate have been used for fabrication of a two-dimensional (2D) sensor. The sensibility and capacity towards methane and acetone at different temperatures have been examined. Experimental data have indicated that the newly designed sensor is highly sensitive to methane with low cross sensitivity towards possible mixed organic gas acetone, relying on the operating temperature. At room temperature (20°C), a quick response time and recovery time of the sensor, less than 10 ms, have been obtained.