Self-Restoring Capacitive Pressure Sensor Based on Three-Dimensional Porous Structure and Shape Memory Polymer
作者： Hanchul Cho , Jong Soo Ko , Young Jung , Jinhyoung Park , Byunggeon Park
关键词: Capacitive sensing 、 Materials science 、 Response time 、 Pressure sensor 、 Porosity 、 Capillary action 、 Composite material 、 Shape-memory polymer 、 Durability 、 Hysteresis
摘要: Highly flexible and compressible porous polyurethane (PU) structures have effectively been applied in capacitive pressure sensors because of the good elastic properties PU structures. However, structure-based limited practical applications owing to their low durability during cycling. Herein, we report a sensor based on three-dimensional structure with notable at compressive 500 kPa facilitated by use shape memory polymer (SMP). The SMP was fabricated using sugar templating process capillary effect. resulted maintenance sensing performance for 100 cycles kPa; can restore its original within 30 s heating 80 °C. exhibited higher sensitivity 0.0223 kPa−1 than typical PU-based displayed excellent terms stability, response time, hysteresis. Additionally, proposed used detect shoe insole pressures real time remarkable motion differentiation.
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