自愈水凝胶
材料科学
标度系数
乙烯醇
压力传感器
压阻效应
复合材料
聚乙烯醇
导电体
石墨烯
纳米复合材料
电导率
聚合物
纳米技术
高分子化学
制作
化学
替代医学
病理
物理
热力学
医学
物理化学
作者
Bin Du,Yi Chao,Kenan Yang,Bin Li,Rubai Luo,Shisheng Zhou,Huailin Li
出处
期刊:AIP Advances
[American Institute of Physics]
日期:2022-09-01
卷期号:12 (9)
被引量:7
摘要
With the rise of new fields such as wearable devices, human health monitoring, and artificial intelligence, flexible sensors have received extensive attention. Conductive hydrogels combine conductive fillers with the excellent properties of hydrogels, making them ideal materials for building flexible sensors. However, conductive hydrogels suffer from poor mechanical properties and low sensitivity, and designing hydrogels with high electrical conductivity and excellent mechanical properties remains a challenge. In this work, a conductive TA-RGO/PVA hydrogel was developed by incorporating TA-RGO nanocomposites into a PVA matrix. The prepared TA-RGO/PVA hydrogel exhibited excellent electrical conductivity, good elastic strain, and excellent mechanical stress. TA-RGO/PVA hydrogels can be used for stretchable strain and pressure sensors. The strain sensor based on the TA-RGO/PVA hydrogel exhibits excellent tensile strain sensitivity (1.936 78 gage factor in the 1%–280% strain region) with excellent stability. The sensor also maintains high sensitivity when used as a pressure sensor (2.2695 kPa−1 in the 0–9 kPa pressure range). These characteristics offer the TA-RGO/PVA hydrogel great potential in the application of wearable flexible strain/pressure sensors and bioelectrodes.
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