标度系数
材料科学
碳纳米管
石墨烯
电阻式触摸屏
纳米技术
可穿戴计算机
拉伤
压阻效应
弯曲
可穿戴技术
导电体
灵敏度(控制系统)
复合材料
制作
计算机科学
电子工程
医学
替代医学
病理
内科学
计算机视觉
嵌入式系统
工程类
作者
Yiyi Li,Qinqin Ai,Linna Mao,Junxiong Guo,Tianxun Gong,Yuan Lin,Guitai Wu,Wen Huang,Xiaosheng Zhang
标识
DOI:10.1038/s41598-021-00307-5
摘要
Abstract One-dimensional and two-dimensional materials are widely used to compose the conductive network atop soft substrate to form flexible strain sensors for several wearable electronic applications. However, limited contact area and layer misplacement hinder the rapid development of flexible strain sensors based on 1D or 2D materials. To overcome these drawbacks above, we proposed a hybrid strategy by combining 1D carbon nanotubes (CNTs) and 2D graphene nanoplatelets (GNPs), and the developed strain sensor based on CNT-GNP hierarchical networks showed remarkable sensitivity and tenability. The strain sensor can be stretched in excess of 50% of its original length, showing high sensitivity (gauge factor 197 at 10% strain) and tenability (recoverable after 50% strain) due to the enhanced resistive behavior upon stretching. Moreover, the GNP-CNT hybrid thin film shows highly reproducible response for more than 1000 loading cycles, exhibiting long-term durability, which could be attributed to the GNPs conductive networks significantly strengthened by the hybridization with CNTs. Human activities such as finger bending and throat swallowing were monitored by the GNP-CNT thin film strain sensor, indicating that the stretchable sensor could lead to promising applications in wearable devices for human motion monitoring.
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