Nacre-Mimetic Electronic Skin Based on Multilayered Ti3C2Tx/Carbon Nanotubes/Thermoplastic Polyurethane Fibrous Mat with Self-Powered Ability for Postural Correction Training

• • Gauge factor (GF) reaches 5.8 × 10^4 with a sensing range up to 535% strain and a detection limit of 0.15% strain, enabling full-range detection of human motion from subtle physiological signals to large joint movements; this addresses the trade-off between sensitivity and stretchability that has stalled commercial e-skins. • • Response time of 80 ms and good durability ensure reliable real-time monitoring for CPR training and posture correction, where latency above 100 ms can compromise feedback efficacy in emergency medical services. • • The single-electrode TENG mode delivers high triboelectric output sufficient to drive LEDs, providing a self-powered capability that eliminates reliance on external batteries, reducing maintenance and improving portability for wearable applications. • • Integration into smart gloves for CPR training and posture correction training demonstrates practical utility in ergonomics and athlete assessment, with cloud diagrams of ΔR/R0 signals enabling quantitative evaluation of serve forces and wrist bending, offering a data-driven approach to physical evaluation.