Microstructured Polymer-Ionic Liquid Composite Film for Capacitive Pressure Sensors
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초록
내용
For the next generation of smart electronic application the wearable electronic devices that operate under mechanical strain is essential. The development of input device technology such as pressure sensors is crucial for the future skin applicable wearable electronic devices. We fabricated transparent and flexible pressure sensors with composite of (PVDF-HFP) and ([EMI][TFSA]). Also, ion-gel film is incorporated with graphene electrodes for flexibility and transparency. This sensor has superior pressure-sensing performance, with a broad sensing range from a few pascals up to 20 kPa, with fast response times of ＜ 30 ms and a low operating voltage of 1 V. The polymer-ionic liquid composite films have sensitivity more than 4 kPa-1 in the long-range pressure regime of 0-20kPa. Our sensor was suitable for the efficient detection of a various pressure sources arising from human life such as sound, pulse and finger motions.