Ultra-Facile Fabrication of Stretchable and Transparent Capacitive Sensor Employing Photo-Assisted Patterning of Silver Nanowire Networks
Ultra-Facile Fabrication of Stretchable and Transparent Capacitive Sensor Employing Photo-Assisted Patterning of Silver Nanowire Networks
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DOI：
10.1002/admt.201600062
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发表时间：
2016-09-01
影响因子：
6.8
通讯作者：
Kim, Jong-Woong
中科院分区：
文献类型：
--
作者：
Jun, Sungwoo;Ju, Byeong-Kwon;Kim, Jong-Woong
可以以简单的方式图案化并且即使在相当大的应变下也保持导电的透明电极对于可拉伸和可穿戴设备中的应用是期望的。本文介绍了一种在可拉伸聚合物上制备银纳米线（AgNW）图案的超简便、快速和无化学品的方法。将银纳米线沉积在热塑性聚氨酯（TPU）上并用强脉冲光照射。这导致聚合物通过AgNW的表面融合，从而产生AgNW/TPU的嵌入结构。光掩模用于限制受辐射影响的区域。在液体洗涤之后，通过剥离机械地分离未被照射的区域中的AgNW。这个简单的过程使得能够制造可拉伸和透明的导电图案。融合过程确保图案化的AgNW牢固地粘附到TPU上，即使在通过高于33%的大应变拉伸时。拉伸-释放测试表明，电极的电阻可逆地变化，这意味着它具有良好的拉伸性。一个可靠的可拉伸电容传感器的简单制造证明了通过采用这种简便的方法，在严重的拉伸后的灵敏度不会恶化。
Transparent electrodes that can be patterned in a simple manner and remain electrically conductive even under considerable strain are desirable for applications in stretchable and wearable devices. This paper introduces an ultra-facile, fast, and chemical-free method to produce silver nanowire (AgNW) patterns on a stretchable polymer. The AgNWs are deposited on thermoplastic urethane (TPU) and irradiated by intense pulsed light. This results in the fusion of the polymer through the surface of the AgNWs, thereby producing an embedded structure of AgNWs/TPU. A photomask is used to limit the areas affected by the radiation. After liquid washing, the AgNWs in areas that are not irradiated are mechanically separated by peeling. This simple procedure enables stretchable and transparent conducting patterns to be fabricated. The fusion procedure ensures that the patterned AgNWs are robustly adhered to the TPU even when stretched by large strains higher than 33%. Stretch-and-release testing reveals that the resistance of the electrodes reversibly varied, implying that it has good stretchability. The simple fabrication of a reliable stretchable capacitive sensor is demonstrated by employing this facile approach, in that the sensitivity does not deteriorate after severe stretching.