Flexible Gas Sensors: Room‐Temperature Solid‐State Grown WO_3−δ Film on Plastic Substrate for Extremely Sensitive Flexible NO₂ Gas Sensors (Adv. Mater. Interfaces 1/2018)

A simple, scalable, and time- and cost efficient approach for enhancement of sensing capability of chemiresistive flexible gas sensors based on nonstoichiometric tungsten oxide (WO3−δ) created using the granule spray in vacuum technique at room temperature is demonstrated. A linear sensor response was achieved for gas concentrations of sub-ppm to tens of ppm with the detection limit 1.88 (±0.128) for NO2 gas. The gas detection response/recovery (17/25 s) time is relatively fast. More details can be found in article number 1700811 by Byungjin Cho, Jungho Ryu and co-workers.