Fig. 1 | npj Flexible Electronics

Fig. 1

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

Fig. 1

Schematics of the cut-and-paste manufacturing processes for ultra-thin, tape-free e-tattoo. a Removing the liner from commercial tattoo paper. b Laminating 1.4-μm-thick transparent PET sheet on the tattoo paper. c Depositing 10-nm-thick Cr and 100-nm-thick Au on the PET with thermal evaporator. d Patterning the Au/Cr/PET sheet with a commercial cutter plotter. e Peeling off the extraneous parts from the tattoo paper. f Applying little water on human skin. g Pasting e-tattoo on human skin from tattoo paper. h Spraying liquid bandage over the e-tattoo with the hydration sensors being covered by a stencil

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