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. 2018 Jan 3;5(3):1700771. doi: 10.1002/advs.201700771

Figure 1.

Figure 1

Multilayer assembly of temporary tattoo electrode and conformability of tattoo electrodes onto human skin: A) Layers schematic 3D exploded view. B) Overall thickness of electrodes (h, EC layer in dark gray, PEDOT:PSS layer in light gray) and sheet resistance (R s, circles) as a function of number of printed layers (N). C) Assembled circular electrode transferred on the arm (scale bar = 2 cm). D) Optical microscope pictures of tattoo with PEDOT:PSS printed line (w: 0.50 mm) transferred on the forefinger and conformally following the profile of deep folds in skin: top view (left) and side view (right) (scale bar = 2 mm). Tattoo transferred onto silicone replica of human skin: E) colorized SEM micrograph (45° tilted view, scale bar = 400 µm); F) optical profilometer, superposition of bright field, and topography images showing topography of an Au line (i.e. interconnection, w: 200 µm) on tattoo (scale bar = 200 µm).