Abstract
Flexible pressure sensors have gained increasing acceptance in recent decades due to their stability, low power consumption, and portability. However, compared to traditional sensors, the linearity of flexible sensors still needs improvement. In this study, we designed and prepared a double-layer micro-structured flexible capacitive pressure sensor with a simple structure, low cost, excellent linearity and high sensitivity. The chemical raw materials used in our experiments are inexpensive, and the overall preparation method is simple. The sensor exhibits excellent linearity (0.993, <10 kPa; 0.978, 10~130 kPa) and combines high sensitivity (0.399 kPa−1, <10 kPa) with a wide detection range (0~130 kPa). The sensor can accurately and stably detect certain sound signals and throat movements. We designed and prepared a sensor array to monitor human sitting posture by identifying pressure distribution, thus avoiding irreversible damage caused by poor posture. This demonstrates the potential of the sensor in health monitoring.
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