Hybrid patterning of metal nanowire/polymer composites based on selective photocuring-and-transfer and kirigami cutting techniques for stretchable circuit application,Journal of Materials Chemistry C

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Hybrid patterning of metal nanowire/polymer composites based on selective photocuring-and-transfer and kirigami cutting techniques for stretchable circuit application
Journal of Materials Chemistry C ( IF 5.7 ) Pub Date : 2022-09-02 , DOI: 10.1039/d2tc02008d
Dong-Joo Kang ₁ , Jong-Man Kim _{1,

2}

Affiliation

Despite recent advances in stretchable conductors, developing highly micro-patternable and strain-insensitive electronic circuits remains a challenge. Here, we present a universal microfabrication route for high-performance stretchable devices and circuits composed of silver nanowires (AgNWs) or other functional conductive nanomaterials. An AgNW network film can be precisely patterned into arbitrary shapes using an ultraviolet (UV)-curable polymer (UCP)-mediated selective photocuring-and-transfer (SPT) technique in a simple and reproducible manner, and then, it can be entirely transferred to another UCP sheet while being embedded in it. This facile process allows the preparation of highly robust and flexible AgNW/UCP composite sheets with a low sheet resistance of 0.31 ± 0.05 Ω sq⁻¹ and a minimum patternable size of 50 μm. The AgNW/UCP sheet can be stretched to high strains without considerable degradation of its electrical properties by simply forming kirigami-inspired mechanical cuts. The synergistic hybridization of the SPT micro-patterning and kirigami cutting processes enables us to successfully construct a highly stretchable and easily customizable circuit board for emerging stretchable system applications. As a proof of concept, we successfully implement a light-emitting diode matrix in the AgNW/UCP circuit board; we confirm that the circuit can stably maintain its light-emitting performance even under high strains of 100%.

中文翻译：

基于选择性光固化转移和剪纸切割技术的金属纳米线/聚合物复合材料的混合图案化用于可拉伸电路应用

尽管最近在可拉伸导体方面取得了进展，但开发高度可微图案化和应变不敏感的电子电路仍然是一个挑战。在这里，我们为由银纳米线 (AgNWs) 或其他功能性导电纳米材料组成的高性能可拉伸器件和电路提出了一种通用的微细加工路线。使用紫外 (UV) 固化聚合物 (UCP) 介导的选择性光固化和转移 (SPT) 技术，AgNW 网络薄膜可以以简单且可重复的方式精确地图案化成任意形状，然后可以完全转移嵌入到另一个 UCP 工作表中。这种简便的工艺可以制备高度坚固和灵活的 AgNW/UCP 复合材料片材，其薄层电阻为 0.31 ± 0.05 Ω sq ^-1最小可图案化尺寸为 50 μm。通过简单地形成剪纸启发的机械切割，AgNW/UCP 片材可以拉伸至高应变而不会显着降低其电性能。SPT 微图案和剪纸切割工艺的协同混合使我们能够成功地为新兴的可拉伸系统应用构建高度可拉伸且易于定制的电路板。作为概念验证，我们成功地在 AgNW/UCP 电路板上实现了发光二极管矩阵；我们确认该电路即使在 100% 的高应变下也能稳定地保持其发光性能。

更新日期：2022-09-02

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