Fig. 3
Strain and temperature sensations of the biomimetic skin. a Schematic design and two simplified equivalent electrical circuits of the biomimetic skin. b The capacitive response of the biomimetic skin upon mutual effect of strain and temperature. c The capacitance–strain curve of the biomimetic skin. Data are derived from average values of capacitance at different temperatures in b, and error bars (standard deviations) are very small suggesting the capacitive response is insensitive to temperature variation. d The resistive response of the biomimetic skin upon mutual effect of strain and temperature. e The reversible capacitance–strain curves and the theoretical prediction (red dash line). f The reversible resistance–strain curves and the theoretical prediction (red dash line). g The reversible resistance–temperature curves. h Capacitance–strain cycling curves in the strain range of 0–100%. i Resistance–strain cycling curves in the strain range of 0–100%. j Resistance–temperature cycling curves in the temperature range of 10–50 °C
