摘要
柔性应变传感器在可穿戴医疗设备、电子皮肤等领域具有广泛的应用前景,然而传统柔性应变传感器只能输出电信号,缺乏对应力应变的直接可视化响应,限制了其在应力预警、健康监测等方面的应用。本文以柔性透明银纳米线(Silver nanowire,AgNW)/硅橡胶薄膜为电极,以浸渍有机电致变色染料和锂离子的聚丙烯酰胺有机凝胶(Polyacrylamide,PAAm)为变色单元,成功制备了一种具有三明治结构的柔性可变色应变传感器。研究结果表明,该PAAm传感器具有优异的拉伸和压缩回弹性及中等应变响应性能(响应灵敏度为0.7),此外它可在外力作用下产生颜色变化,实现对应变的可视化响应。该传感器在交互式可穿戴设备、电子皮肤、防伪、人工假肢和智能机器人等方面具有广阔的应用前景。
Flexible strain sensor has great potential in medical industry,health care and robotics,etc.However,most flexible strain sensors reported only output electrical signal(e.g.resistance,current and capacitance)in response to external strain,and lack direct notice of external loading,restricting their applications in early warning and health care,etc.In this work,we produced a flexible color-changeable strain sensor by using the silver nanowire(AgNW)/silicone composite film as the transparent electrode and polyacrylamide organogel as the electrochromic component.In addition to the excellent flexibility and moderate strain sensing performance(strain sensitivity of 0.07),the senor obtained has a reversible color transformation in response to external strain via the electrochromic effect.In virtue of these advantages mentioned above,the current sensor has broad applications in interactive wearable devices,electronic skin,anti-counterfeiting,artificial prosthetics and intelligent robots.
作者
李瑶
刘群
黄培
李元庆
付绍云
LI Yao;LIU Qun;HUANG Pei;LI Yuanqing;FU Shaoyun(College of Aerospace Engineering,Chongqing University,Chongqing 400044,China)
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2022年第6期2716-2723,共8页
Acta Materiae Compositae Sinica
基金
国家自然科学基金(11672049,U1837204,11632004,51803016)。
关键词
柔性
透明电极
电致变色
可视化
应变传感器
flexibility
transparent electrode
electrochromic
visualization
strain sensor
