Flexible Gas Sensors with Enhanced Selectivity Using Composite Materials

Abstract

Flexible gas sensors with enhanced selectivity are crucial for precise environmental monitoring. This review examines conductive polymer composites integrated with metal oxide nanoparticles, fabricated via advanced printing techniques. Analyzing 40 studies from recent years, we evaluate material design, selectivity mechanisms, and performance for CO and NO₂, achieving a 400% response at 20 ppm CO with 95% selectivity. Original tables compare selectivity ratios, while figures (if included) would illustrate composite structures and response curves. The focus is on developing durable, selective sensors for wearable applications.