Hollow-Structured Ti3C2Tx Composite Fibers for Enhanced Pressure-Humidity Bifunctional Sensing in Febrile Convulsion Detection.

Wearable bifunctional sensors demonstrate considerable potential for implementation in early warning systems targeting febrile convulsions. However, significant challenges persist in simultaneously achieving real-time and precise detection of dual sensing modalities with accurate signal discrimination for clinical diagnosis. Here, we have fabricated hollow-microstructure Ti3C2Tx/poly(benzodifurandione) composite fibers for synergistic optimization of humidity-pressure sensing performance through rational microstructure engineering of the sensitive layer coupled with the dynamic reconfiguration of conductive pathways. The bifunctional sensor provides high sensitivity (168.72 kPa-1), a low detection limit (0.67 Pa) for pressure sensing, rapid response/recovery time (3 s/20 s), and low humidity hysteresis (2.18% RH) for humidity sensing. Integrated with a control circuit, a febrile convulsion early alarm system is established for real-time monitoring of muscle activities and breathing rate by sending an early alarm to the mobile terminal when in abnormal conditions. This work develops a new avenue for prompt treatment of intelligent healthcare.