材料科学
自愈水凝胶
生物分子
生物相容性
丝绸
纳米技术
电极
人造皮肤
人体皮肤
生物医学工程
复合材料
化学
高分子化学
生物
物理化学
冶金
医学
遗传学
作者
Minsik Jo,Kyungtaek Min,Bishnupada Roy,Sookyoung Kim,Sangmin Lee,Jiyong Park,Sunghwan Kim
出处
期刊:ACS Nano
[American Chemical Society]
日期:2018-05-24
卷期号:12 (6): 5637-5645
被引量:107
标识
DOI:10.1021/acsnano.8b01435
摘要
Human skin provides an interface that transduces external stimuli into electrical signals for communication with the brain. There has been considerable effort to produce soft, flexible, and stretchable electronic skin (E-skin) devices. However, common polymers cannot imitate human skin perfectly due to their poor biocompatibility, biofunctionality, and permeability to many chemicals and biomolecules. Herein, we report on highly flexible, stretchable, conformal, molecule-permeable, and skin-adhering E-skins that combine a metallic nanowire (NW) network and silk protein hydrogel. The silk protein hydrogels offer high stretchability and stability under hydration through the addition of Ca2+ ions and glycerol. The NW electrodes exhibit stable operation when subjected to large deformations and hydration. Meanwhile, the hydrogel window provides water and biomolecules to the electrodes (communication between the environment and the electrode). These favorable characteristics allow the E-skin to be capable of sensing strain, electrochemical, and electrophysiological signals.
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