ABSTRACT Ionic conductive organohydrogels have attracted significant attention in wearable sensing due to their transparency, conductivity, and flexibility. However, simultaneously achieving mechanical softness, high transparency, environmental stability, and excellent sensing performance remains a significant challenge. Herein, a binary‐network ionic organohydrogel was fabricated using acrylamide and polyvinyl alcohol within a water/glycerol solvent system to impart anti‐freezing properties. The resulting organohydrogel exhibits high transparency (>95%) and remarkable stretchability (>1400%). Notably, the hydrogel‐based sensor demonstrates high strain sensitivity, a broad sensing range (2%–500%), and outstanding stability and durability over 1000 cycles. It can effectively monitor human motion across various joints, such as the wrist, elbow, and knee. Moreover, the sensor maintains reliable performance at both low (–20°C) and high (60°C) temperatures, showcasing excellent anti‐freezing and anti‐drying capabilities. It also possesses notable thermal sensitivity across a wide temperature range. Leveraging its dual sensitivity to strain and temperature, machine learning‐assisted technology was employed to recognize different breathing patterns, achieving an average prediction accuracy of 98.4%. This work lays a foundation for comprehensive respiratory health monitoring and holds promise for applications in daily health management and clinical practice.
Ni et al. (2026) studied this question.