Fig. 3: Electronic performance of the sensor for pressure sensing.

a Normalized change in the experimental capacitance versus the applied pressure. b Capacitive response versus different applied stresses. c Outlined response and relaxation time under a pressure of 5 kPa. d Detecting stress resolution at low pressure. e Comparison of the sensitivity of our ionic sensor with other sensors. f Long-term durability over 12000 cycles under a pressure of 800 kPa. g Current density curves versus the potential under independently applied stress