Fig. 3: Electrical and mechanical characterization of the e-tattoo.
From: Epidermal electronic-tattoo for plant immune response monitoring

a Sheet resistance of the e-tattoo transferred to different substrates. b Relative resistance change of the e-tattoo under various bending degrees. c Relative resistance change of the e-tattoo under dynamic bending (bending downward with a bending degree of 60 degrees). d Relative resistance change of the e-tattoo when immersed in water and dried out in the ambient condition. e Relative resistance change of the e-tattoo under different temperatures. f Relative resistance of the e-tattoo over a span of 30 days under the ambient conditions. g Relative resistance change of the e-tattoo transferred to a leaf undergoing a gradual dehydration process until fully dried out, accelerated in an oven at 40 °C. The inset images show photos of the leaf every 30 min, illustrating its wilting and deformation over time. h Relative resistance of e-tattoo on leaves over a span of 21 days. Source data are provided as a Source Data file.