Fig. 4: Conformability and adhesiveness of PWS films. | Nature Communications

Fig. 4: Conformability and adhesiveness of PWS films.

From: Fully organic compliant dry electrodes self-adhesive to skin for long-term motion-robust epidermal biopotential monitoring

Fig. 4

a A PWS film bearing 250 g of weight attach tightly on the ITO glass, enabling the LED light in the conducting circuit. b The adhesiveness of a PWS film on various skins including the smooth skin, hairy rough skin, wet deformable skin, and stretched porcine skin. c Cross-section SEM image of a PWS film conformed on a rough skin replica. d 3D optical image of a PWS film replicated the skin wrinkles. e The setup for the measurement of the interfacial adhesion on the skin or glass by the standard 90-degree peel test (ASTM D2861). f Interfacial adhesion forces of PWS films on glass and various skins. g Adhesion forces of PWS films on glass and dry skin within ten repetitions of attaching/detaching. h, i Impedance spectra of commercial Ag/AgCl gel electrode and PWS dry electrode on dry and wet skin, and the corresponding impedances at 10, 100, and 1000 Hz.

Back to article page