可绘制的基于的波纹软弹性体电容器,用于区域应变传感
Han Liu1, Simon Laflamme1,2, Matthias Kollosche1,3
1Department of Civil, Construction, and Environmental Engineering, Iowa State University, Ames, IA 50011, USA.
Sensors (Basel, Switzerland)
|July 14, 2023
概括
使用开发了一种新的可涂装软弹性体电容 (cSEC) 传感器,可直接用于结构健康监测. 这一进步克服了以前的环氧基传感器的局限性,为灵活的电子产品提供了更通用的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 电气工程 电气工程
背景情况:
- 软聚合物材料对于开发符合规定的机器和设备至关重要,特别是在灵活和可拉伸的电子产品中.
- 基于软聚合物的大面积电子 (LAE) 正在探索用于结构健康监测 (SHM) 应用,需要能够适应各种表面并检测变形的传感器.
- 之前的工作引入了使用 styrene-ethylene-butadiene-styrene (SEBS) 的波纹软弹性体电容器 (cSEC),但其依赖环氧体的粘合限制了其部署.
研究的目的:
- 为了开发一个可绘制的波纹软弹性体电容 (cSEC) 传感器.
- 创建适合直接应用的cSEC传感器的无溶剂制造方法.
- 评估新的可涂料基cSEC的性能,并将其与已建立的基于SEBS的cSEC进行比较.
主要方法:
- 采用无溶剂制造方法,使用室温化作为宿主矩阵.
- 泰坦亚颗粒被纳入中,形成介电层,碳黑被用于导电伸展电极.
- 通过将涂在表面上,然后沉积并行板电容结构来应用传感器.
主要成果:
- 油漆的-cSEC表现出良好的机电行为,具有高线性 (R2 = 0.9901),尺寸系数为1.58,分辨率为70 μm.
- 与SEBS-cSEC在悬臂板上的性能比较显示了可比的结果,尽管涂料带来了更多的噪音和对主导频率的轻微低估.
- 该研究证明了SHM可绘制传感器的可行性,克服了基于溶剂的制造和环氧粘合的局限性.
结论:
- 开发的可涂料-cSEC为结构健康监测应用提供了一个有前途的替代方案,使其在复杂的表面上更容易部署.
- 虽然性能与现有技术相提并论,但可能需要进一步的研究来减轻与漆相关的噪音和频率低估问题.
- 这一进步为在结构健康监测和其他需要灵活传感器的领域中更容易获得和更具多功能的大面积电子产品铺平了道路.
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