Green electronics is a trending and cost-effective method with potential application in health care monitoring and wearable electronics. We present a piezo resistive wearable pressure sensor using Polyaniline (PANI) incorporated with cellulose paper (CP) substrate. The ultralow-cost sensor is prepared by coating the sensing material on the paper using simple dip coating method. On stacking multiple PANI-CPs one upon another, the obtained flexible sensor demonstrates excellent sensitivity of 2.23 kPa⁻¹, fast response of 70 ms and wide working range from 2 to 90 kPa. Furthermore, the sensor manifest excellent flexibility, outstanding stability up to 800 loading–unloading cycles and biodegradability. In addition, the pressure sensor can also be used for detecting rapid finger tapping. Apart from the other pressure sensors, this work mainly focusses on fabricating wearable piezo resistive sensors with low cost, facile fabricating process and shows potential for future applications in flexible wearable sensors.

绿色电子产品是一种趋势且具有成本效益的方法，可潜在地应用于医疗保健监控和可穿戴电子产品中。我们提出了一种结合了纤维素纸（CP）基材的聚苯胺（PANI）的压电电阻式可穿戴压力传感器。超低成本传感器是通过使用简单的浸涂方法在纸上涂覆传感材料而制备的。在将多个PANI-CP相互堆叠时，所获得的柔性传感器显示出2.23 kPa ^-1的出色灵敏度。，70 ms的快速响应和2至90 kPa的宽工作范围。此外，该传感器还具有出色的灵活性，高达800个装卸循环的出色稳定性以及可生物降解性。另外，压力传感器还可用于检测快速的手指敲击。除其他压力传感器外，这项工作主要集中在低成本，易制造的可穿戴式压电电阻传感器的制造上，并显示出在柔性可穿戴传感器中未来应用的潜力。