Dry-Printing Conductive Circuit Traces on Water-Soluble Papers
Dry-Printing Conductive Circuit Traces on Water-Soluble Papers
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DOI：
10.1021/acssuschemeng.3c02575
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发表时间：
2023-11
期刊：
影响因子：
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通讯作者：
A. Taba;Zabihollah Ahmadi;Aarsh Patel;Parvin Fathi-hafshejani;Seungjong Lee;Shuai Shao;Michael C. Hamilton;N. Shamsaei;M. Mahjouri‐Samani
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作者：
A. Taba;Zabihollah Ahmadi;Aarsh Patel;Parvin Fathi-hafshejani;Seungjong Lee;Shuai Shao;Michael C. Hamilton;N. Shamsaei;M. Mahjouri‐Samani
印刷电子产品因其设计灵活性、低制造成本和设计到制造的快速周转而受到极大的关注。传统的印刷电子产品基板通常基于聚酰亚胺等不可生物降解的聚合物，这些聚合物会产生大量的电子垃圾和污染，对环境构成巨大挑战。随着对印刷电子设备和传感器的需求增加，在可生物降解的衬底上印刷此类设备的能力可以为此类环境问题提供解决方案。然而，目前的打印技术是基于与可生物降解的基材(如纸张)不兼容的液体和油墨。在这里，我们提出了一种干法印刷工艺，即干法添加剂纳米制造(Dry-ANM)技术，用于在可生物降解的纸张上印刷导电银线和图案，用于柔性混合纸电子学。纯净和干燥的纳米颗粒是通过脉冲激光烧蚀银靶产生的，然后银靶通过喷嘴传输并定向到纸张基材上，在那里它们被沉积并实时激光烧结以形成所需的图案，而不会损坏纸张。研究了不同印刷参数对烧纸阈值的影响，并采用不同的线条厚度和烧结激光功率密度对线条的电学性能进行了表征。此外，还通过弯曲和扭转试验评价了印刷线条和图案的机械和电学性能。此外，还论证了在不同纸张类型上印银的可行性。这项研究可能会导致可生物降解和环保的印刷电子设备和传感器。
Printed electronics are gaining significant interest due to their design flexibility, low fabrication cost, and rapid design-to-manufacturing turnaround. Conventional substrates for printed electronics are often based on nonbiodegradable polymers such as polyimide that pose high environmental challenges by creating massive e-waste and pollution. As the demand for printed electronics and sensors increases, the ability to print such devices on biodegradable substrates can provide a solution to such environmental problems. However, current printing technologies are based on liquids and inks that are incompatible with biodegradable substrates, such as paper. Here, we present a dry-printing process, namely, a dry additive nanomanufacturing (Dry-ANM) technique, for printing conductive silver lines and patterns on biodegradable papers for flexible hybrid papertronics. Pure and dry nanoparticles are generated by pulsed laser ablation of a silver target that is then transported through a nozzle and directed onto paper substrates, where they are deposited and laser-sintered in real time to form the desired pattern without damaging the paper. The effects of different printing parameters on the paper-burning threshold are investigated, and the electrical properties of the lines are characterized by using different line thicknesses and sintering laser power densities. In addition, the mechanical and electrical properties of the printed lines and patterns are evaluated by bending and twisting tests. Furthermore, the feasibility of printing silver on different paper types is demonstrated. This research can potentially lead to biodegradable and environmentally friendly printed electronics and sensors.