共形矩阵
可伸缩电子设备
材料科学
丝绸
电子皮肤
数码产品
电极
生物相容性
纳米技术
可穿戴技术
柔性电子器件
可穿戴计算机
复合材料
计算机科学
电气工程
化学
冶金
嵌入式系统
物理化学
工程类
作者
Geng Chen,Naoji Matsuhisa,Zhiyuan Liu,Dianpeng Qi,Pingqiang Cai,Ying Jiang,Changjin Wan,Yajing Cui,Wan Ru Leow,Zhuangjian Liu,Suxuan Gong,Ke‐Qin Zhang,Yuan Cheng,Xiaodong Chen
标识
DOI:10.1002/adma.201800129
摘要
Abstract Soft and stretchable electronic devices are important in wearable and implantable applications because of the high skin conformability. Due to the natural biocompatibility and biodegradability, silk protein is one of the ideal platforms for wearable electronic devices. However, the realization of skin‐conformable electronic devices based on silk has been limited by the mechanical mismatch with skin, and the difficulty in integrating stretchable electronics. Here, silk protein is used as the substrate for soft and stretchable on‐skin electronics. The original high Young's modulus (5–12 GPa) and low stretchability (<20%) are tuned into 0.1–2 MPa and > 400%, respectively. This plasticization is realized by the addition of CaCl 2 and ambient hydration, whose mechanism is further investigated by molecular dynamics simulations. Moreover, highly stretchable (>100%) electrodes are obtained by the thin‐film metallization and the formation of wrinkled structures after ambient hydration. Finally, the plasticized silk electrodes, with the high electrical performance and skin conformability, achieve on‐skin electrophysiological recording comparable to that by commercial gel electrodes. The proposed skin‐conformable electronics based on biomaterials will pave the way for the harmonized integration of electronics into human.
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