期刊
ACS APPLIED MATERIALS & INTERFACES
卷 12, 期 46, 页码 51969-51977出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.0c15108
关键词
double-network hydrogels; physical cross-linking; pressure sensor; strain sensor; ion-conductive hydrogels; recovery; high sensitivity
资金
- National Natural Science Foundation of China [51873224]
- National Key Research and Development Program
- Ministry of Science and Technology of China [2016YFC1101902]
- Ministry of Industry and Information Technology of China [TC90HZV/1]
- S&T Innovation 2025 Major Program of Ningbo [2018B10040]
Ion-conductive hydrogel sensors have attracted great research interests for applications in wearable devices, electronic skins, and implantable sensors, but most such sensors are fragile, with low conductivity and sensitivity. This study reports on novel ion-conductive double network hydrogels with a cross-linked helical structure, hydrophobic association, and metal-ion coordination. The helical kappa-carrageenan first network and the second network cross-linked by Pluronic F127 diacrylate micelles and tridentate Fe3+-COO- coordination work synergistically to show the tensile strength of 2.7 MPa, fracture strain of 1400%, and tensile toughness of 9.82 MJ m(-3) and fatigue resistance against cyclic loadings with high strains. The hydrogels show an ion conductivity of 1.15 S m(-1), a strain sensitivity of up to 2.8, and a pressure sensitivity of 0.33 kPa(-1). Sensor arrays fabricated from the conductive hydrogels provide an in-plane detection of pressures less than 200 Pa. Such hydrogel sensors have potential applications to electron skins and implantable sensors.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据