材料科学
导电体
拉伤
可穿戴计算机
可穿戴技术
复合材料
可伸缩电子设备
柔性电子器件
织物
弹性体
标度系数
制作
电子皮肤
纳米技术
压阻效应
聚二甲基硅氧烷
软机器人
摩擦电效应
数码产品
纳米发生器
导电的
电气工程
计算机科学
嵌入式系统
工程类
内科学
医学
作者
Hu Liu,Qianming Li,Yibing Bu,Na Zhang,Chunfeng Wang,Caofeng Pan,Liwei Mi,Zhanhu Guo,Chuntai Liu,Changyu Shen
出处
期刊:Nano Energy
[Elsevier]
日期:2019-12-01
卷期号:66: 104143-104143
被引量:221
标识
DOI:10.1016/j.nanoen.2019.104143
摘要
Abstract With the fast growth of wearable intelligent devices, tunable strain sensors with broad strain sensing range and high sensitivity are in urgent demand. Furthermore, the merits of excellent waterproof property, self-cleaning, and anti-corrosion are also imperative for the practical applications of them. Herein, a tunable wearable micro-cracked non-woven fabrics (NWF) strain sensor with broad strain sensing range and high sensitivity was successfully developed based on the electrically conductive cellulose nanocrystal (CNC)/graphene (G) coating with controllable micro-crack density, which was achieved through changing the G loading of the coating layer, and its superhydrophobicity was achieved by simply dip-coating in the hydrophobic fumed silica (Hf-SiO2)/ethanol dispersion. As a result, a broad working range of 98% and GF value up to 2.36 × 104 are simultaneously achieved for the prepared strain sensor (G content is 25 wt%). In addition, it possesses an ultralow detection limit as low as 0.1%, short response time (33 ms) and good sensing stability over 1000 cycles. What's more, the NWF strain sensor presents excellent waterproofness (WCA = 154°), anti-corrosion ability, outstanding self-cleaning and stability. Due to the excellent response performances, the NWF strain sensor can successfully monitor various human activities from subtle deformations (e.g. speech recognition, pulse waves) to vigorous body movements (e.g. finger, elbow joint and wrist movement). Specially, owing to its excellent superhydrophobic characteristic, the strain sensor also exhibits superior self-cleaning capability and good applicability in a humid or underwater harsh outdoor environment.
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