Fig. 2: Evaluation of the performance of the sensor. | npj Flexible Electronics

Fig. 2: Evaluation of the performance of the sensor.

From: Highly sensitive active-powering pressure sensor enabled by integration of double-rough surface hydrogel and flexible batteries

Fig. 2

Schematic illustration of a LBG/PVA/CNTs-DR, b LBG/PVA/CNTs-DF and c LBG/PVA/CNTs-SR hydrogels. d The relative current changes for the sensors with LBG/PVA/CNTs-SR, LBG/PVA/CNTs-DF and LBG/PVA/CNTs-DR hydrogels; the slope of the curve represents sensitivity. e The I-t curves of the sensor with LBG/PVA/CNTs-DR hydrogels under serial pressures below 1 kPa. f Response of the sensor with LBG/PVA/CNTs-DR hydrogels to the loading and removal of a small weight (a grain of beans, corresponding to a pressure below 0.1 kPa). g Durability test of the sensor with LBG/PVA/CNTs-DR hydrogels for 1000 cycles under 0.8 kPa. h Detection limit and sensitivity of our piezoresistive sensor with LBG/PVA/CNTs-DR hydrogels in comparison with piezoresistive sensors based on hydrogels as reported in refs. 20,29,30,31,32,33.

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