Strain response of stretchable micro-electrodes: Controlling sensitivity with serpentine designs and encapsulation
Strain response of stretchable micro-electrodes: Controlling sensitivity with serpentine designs and encapsulation
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DOI：
10.1063/1.4862264
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发表时间：
2014-01-13
影响因子：
4
通讯作者：
Bhaskaran, Madhu
中科院分区：
文献类型：
--
作者：
Gutruf, Philipp;Walia, Sumeet;Bhaskaran, Madhu
柔性电子的功能依赖于薄膜微电极的稳定性能。这封信研究了在聚酰亚胺上的金薄膜的行为，聚酰亚胺是柔性器件中普遍使用的一种组合。在现场监测金微电极电阻的同时，对其施加应力，研究了金微电极的动态行为。电极的形状被系统地改变，以检测电阻应变敏感性，而另一种封装被应用于表征多层行为。实现的设计显示了对重复应变的显著耐受性，证明了曲率和封装是最小化电阻应变敏感性的优秀方法，从而实现了经久耐用的柔性电子产品。(C)2014 AIP出版有限责任公司。
The functionality of flexible electronics relies on stable performance of thin film micro-electrodes. This letter investigates the behavior of gold thin films on polyimide, a prevalent combination in flexible devices. The dynamic behavior of gold micro-electrodes has been studied by subjecting them to stress while monitoring their resistance in situ. The shape of the electrodes was systematically varied to examine resistive strain sensitivity, while an additional encapsulation was applied to characterize multilayer behavior. The realized designs show remarkable tolerance to repetitive strain, demonstrating that curvature and encapsulation are excellent approaches for minimizing resistive strain sensitivity to enable durable flexible electronics. (C) 2014 AIP Publishing LLC.