Figure 5.

Wearable flexible sensors based on P(AA-HEMA)/GO hydrogels. (a) the sensor for monitoring the motion of the fingers, the (related original resistance of the sensor) R₀ was 1155 Ω; (b) the hydrogel sensors adhered to the gloves with the finger bending at different angles, the R₀ was 1115 Ω; (c) the sensor for monitoring the motion of the wrist, the R₀ was 1092 Ω; (d) pressing the hydrogel sensor to detect its sensitivity, the R₀ was 6300 Ω; (e) stretching, the R₀ was 3968 Ω; (f) twisting, the R₀ was 5134 Ω. The size of the hydrogels in (a–c) were different from the size of the hydrogels in (d–f).