A Novel-Structure LC Resonant Passive Wireless Sensor for NO2 Sensing

This work presents an LC resonant passive wireless gas sensor with a novel structure designed to mitigate the negative impact of substrate. The antenna in new structure, and reader antenna, were optimized utilizing HFSS software improve transfer efficiency. superiority compared general examples is highlighted verified. change substrate capacitance essentially makes no interference parameters be measured. for was prepared by combining etching sputtering methods. ZnO nanowires (NWs) characterized confirm their high purity wurtzite crystal structure. sensors demonstrated excellent sensing performance, including low detection limit 0.5 ppm NO2, response 1.051 outstanding stability at 180 °C. newly developed not only prevented from during testing, but also expanded choice substrates, playing critical role development based on resonance principle.