Facile and highly efficient fabrication of robust Ag nanowire–elastomer composite electrodes with tailored electrical properties†,Journal of Materials Chemistry C

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Facile and highly efficient fabrication of robust Ag nanowire–elastomer composite electrodes with tailored electrical properties†
Journal of Materials Chemistry C ( IF 5.7 ) Pub Date : 2018-06-19 00:00:00 , DOI: 10.1039/c8tc01691g
Ming Yang _{1,

2,

3,

4} , Sang Woo Kim _{1,

2,

3,

4} , Shuye Zhang _{5,

6,

7,

8} , Dae Young Park _{1,

2,

3,

4} , Chang-Woo Lee _{1,

2,

3,

4} , Yong-Ho Ko _{1,

2,

3,

4} , Haifeng Yang _{5,

6,

7,

8} , Yong Xiao _{8,

9,

10,

11} , Gang Chen _{8,

9,

12,

13} , Mingyu Li _{5,

6,

7,

8}

Affiliation

The fabrication of Ag nanowire (AgNW) patterns on a working substrate is a critical step to prepare flexible/stretchable electronics. The conventional method of making AgNW patterns is based on a 2-D mask, which suffers some serious drawbacks, such as low material usage, difficulty in preparing complex patterns, and susceptibility to damaged pattern edges. To overcome these drawbacks, this study proposes the use of a 3-D mask, which when combined with a vacuum filtration system, allowed efficient fabrication of complex AgNW patterns with clear edges. In addition, we controlled the microstructure of the patterned AgNW/polydimethylsiloxane (PDMS) electrodes transferred from the membrane filter, obtaining stretchable electrodes with anisotropic electrical properties. Moreover, we greatly improved the stability and reliability of the patterned electrodes in long-term stretch/release tests by developing a PDMS/AgNW/PDMS sandwich structure. Based on these improvements, robust stretchable electrodes with a stretchability of over 80% uniaxial strain and tunable gauge factors ranging from 0.07 to 520 (a much wider range than previously reported) were fabricated by optimizing the AgNW deposition density and PDMS peel-off direction. Finally, we demonstrated the applicability of the proposed method by fabricating stretchable circuits which were able to either maintain a stable resistance or sensitively monitor various human motions, revealing its tremendous potential for applications in flexible/stretchable electronics.

中文翻译：

具有定制电性能的坚固耐用的Ag纳米线-弹性体复合电极的便捷高效制造†

在工作基板上制造Ag纳米线（AgNW）图案是制备柔性/可拉伸电子产品的关键步骤。制作AgNW图案的常规方法是基于2-D掩模的，该掩模具有一些严重的缺点，例如材料用量低，难以制备复杂的图案以及对损坏的图案边缘易感。为了克服这些缺点，这项研究提出了使用3-D掩模的方法，当与真空过滤系统结合使用时，可以有效地制造具有清晰边缘的复杂AgNW图案。此外，我们控制了从膜滤器转移的图案化AgNW /聚二甲基硅氧烷（PDMS）电极的微观结构，从而获得了具有各向异性电性能的可拉伸电极。而且，通过开发PDMS / AgNW / PDMS夹心结构，我们在长期拉伸/释放测试中大大提高了图案化电极的稳定性和可靠性。基于这些改进，通过优化AgNW沉积密度和PDMS剥离方向，制造出了具有可拉伸性的可拉伸电极，其可拉伸性超过80％的单轴应变，可调节应变系数范围为0.07至520（比以前报道的范围大得多）。最后，我们通过制造可拉伸电路来证明该方法的适用性，这些电路既可以保持稳定的电阻，又可以灵敏地监视各种人体运动，从而揭示了其在柔性/可拉伸电子产品中的巨大潜力。基于这些改进，通过优化AgNW沉积密度和PDMS剥离方向，制造出了具有可拉伸性的可拉伸电极，其可拉伸性超过80％的单轴应变，可调节应变系数范围为0.07至520（比以前报道的范围大得多）。最后，我们通过制造可拉伸电路来证明该方法的适用性，这些电路既可以保持稳定的电阻，又可以灵敏地监视各种人体运动，从而揭示了其在柔性/可拉伸电子产品中的巨大潜力。基于这些改进，通过优化AgNW沉积密度和PDMS剥离方向，制造出了具有可拉伸性的可拉伸电极，其可拉伸性超过80％的单轴应变，可调节应变系数范围为0.07至520（比以前报道的范围大得多）。最后，我们通过制造可拉伸电路来证明该方法的适用性，这些电路既可以保持稳定的电阻，又可以灵敏地监视各种人体运动，从而揭示了其在柔性/可拉伸电子产品中的巨大潜力。

更新日期：2018-06-19

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