Fig. 2: a Plot of the capacitance vs. strain for a BCP SC sensor.

b Capacitance change under 25% strain with time. The insets show that the capacitance changes upon both stretching and release occur within 80 msec. c Capacitance changes during repetitive variations in the strain from 20 to 100%. d Endurance of the capacitance change during more than 5000 50% stretch/release cycles