用于高灵敏度压力传感器的肖特基传感网络OA

Fabric-based high-sensitivity pressure sensors utilizing IoT technology are crucial for flexible wearable electronics which play a vital role in medical diagnostics and healthcare monitoring.However,the bal-ance between sensitivity and high precision remains a challenge.In this paper,the sensor network based on fab-ric-based dynamic Schottky structures was established:polypyrrole(PPy)/graphene oxide(GO)/cellulose fi-bers conductive composite fibers were woven with aluminum wires to form densely distributed Schottky junction array.This structure not only enabled direct current(DC)output,avoiding complex acquisition circuits of alter-nating current(AC),but also achieved extremely high sensitivity by pressure-modulating the Schottky barrier.The PPy/GO/Cellulose-17%sensor exhibited high sensitivity(268.76 kPa-1 over 0.01～1.78 kPa),low hys-teresis(～0.91%),rapid response time(2.4 ms)and recovery time(9.1 ms),with a detection limit up to 1.5 MPa and cyclic stability exceeding 12,000 cycles(at 13 N).The device showed a current output of 5 mA(13 N)and a voltage output of 330 mV(13 N).Its outstanding sensing performance stemmed from the synergis-tic effects of oxide layer rupture,enhanced quantum tunneling and increased carrier mobility.This structure rap-idly established conductive pathways and reduced stress concentration during compression process.The study pro-vided a novel paradigm for PPy/GO/Cellulose-17%sensor with precision,high-sensitivity,and low-hysteresis,enabling high-accuracy monitoring of diverse physiological activities and motion signals.