Fig. 2 | npj Flexible Electronics

Fig. 2

From: Low-cost, μm-thick, tape-free electronic tattoo sensors with minimized motion and sweat artifacts

Fig. 2

Mechanical characterizations of e-tattoo. a Top view of an e-tattoo incorporating two ECG electrodes, two hydration sensors, and an RTD, all in filamentary serpentine (FS) layout. b Schematics of the tensile testing system with in situ electrical resistance measurement. c Resistance change measured as a function of applied strain. dg Conformability of open-mesh 13-μm-thick (upper row) and 1.5-μm-thick e-tattoo on human skin

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