Fig. 7. Resistance changes of the GA/SA3 DN hydrogel responding to (a) finger bending, (b) knee bending, (c) elbow bending between 0 and 90°, (d) wrist bending and releasing, and monitoring of facial expressions of (e) frowning and (f) smiling. (g) Photo showing the GA/SA3 DN hydrogel film adhered on the throat without assistance, and corresponding detection of (h) swallowing and (i) speaking.
