Figure 6.

(A) Schematic design of the ionic skin developed in the current study. (B) The printed hydrogel sensors attached to a puppet hand and the real-time capacitance signals when different gestures were posed. Inserted images showing the corresponding gestures of the puppet hand. Real-time capacitance signals when the tester who wore the device (C) laughed, (D) said “thank you,” and (E) took deep breaths. (F) Real-time capacitance signals of pulse when the sensor attaches to the tester’s wrist.