纳米复合材料
可穿戴计算机
材料科学
离子液体
纳米技术
复合材料
计算机科学
化学
嵌入式系统
生物化学
催化作用
作者
Chao Niu,Li An,Huijuan Zhang
出处
期刊:ACS applied polymer materials
[American Chemical Society]
日期:2022-05-23
卷期号:4 (6): 4189-4198
被引量:7
标识
DOI:10.1021/acsapm.2c00161
摘要
Flexible wearable sensors originating from ionogels have found extensive and significant applications in electronic skins, body-health monitoring, and personal healthcare diagnosis. Developing an ionogel-based sensor with robust mechanics and durable sensing in a wide service temperature range remains challenging. Herein, a high-performance wearable sensor with temperature-tolerant mechanics and durable sensing was constructed by virtue of hydrogen bonding between a poly(vinyl alcohol) (PVA)-incorporated nanocomposite interpenetrating network and an ionic liquid, i.e., 1-butyl-3-methylimidazolium iodide ([C4mim][I]). Through modulation of hydrogen bonding and thus good compatibility between [C4mim][I] and the network, the ionogels exhibited superior mechanics, excellent antifatigue, and durable sensing in a wide working temperature range. The ionogel-based wearable sensor exhibited stable and repeatable sensitivity toward various human motions including finger bending, elbow joint bending, and swallowing. More importantly, the pressure sensing can be completely preserved in a service temperature range of −20 to 80 °C. This work provided a feasible method to construct a mechanically strong, temperature-durable ionogel-based multimode sensor, which would find versatile applications as electronic skins, human-motion detection, and intelligent devices.
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