Fig. 3From: Sweat-permeable electronic skin with a pattern of eyes for body temperature monitoringa Sweat-permeability of eyes-patterned e-skin compared to conventional e-skin. b Optical image of the sweat-permeability test of the e-skins. The inset image shows a magnified microscopic image of the eyes-structured e-skin. c Color-changed images of litmus paper to monitor sweat permeability of e-skins (scale bar: 500 μm)Back to article page