Solution Deposition of Conformal Gold Coatings on Knitted Fabric for E-Textiles and Electroluminescent Clothing
Solution Deposition of Conformal Gold Coatings on Knitted Fabric for E-Textiles and Electroluminescent Clothing
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DOI：
10.1002/admt.201700292
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发表时间：
2018-03-01
影响因子：
6.8
通讯作者：
Carmichael, Tricia Breen
中科院分区：
文献类型：
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作者：
Wu, Yunyun;Mechael, Sara S.;Carmichael, Tricia Breen
可穿戴电子产品的愿景涉及在人与设备之间创建一个难以察觉的边界。将电子设备集成到服装中是实现这一愿景的重要途径;然而，由于针织纺织品的多孔结构，将导电材料与纺织品结合起来具有挑战性。拉伸性取决于保持织物纱线之间的空隙结构;用导电材料填充这些空隙会使纺织品变硬，并可能导致有害的开裂。作者展示了针织纺织品的基于溶液的金属化，其用金保形地涂覆单个纤维，使空隙结构保持完整。所得到的镀金织物具有高导电性，在横列方向上的薄层电阻为每平方1.07。当织物被拉伸到15%应变时，电阻降低80%，并且在160%应变时保持该值。这种出色的拉伸性和导电性的结合是伴随着耐磨性，出汗和洗涤。低成本的丝网印刷的蜡抗蚀剂被证明生产图案化的黄金纺织品，适用于电气连接的离散设备在服装。进一步证明了通过将器件材料层沉积到涂金纺织品上来制造电致发光织物，将器件功能与纺织品紧密结合，用于不可感知的可穿戴设备。
The vision for wearable electronics involves creating an imperceptible boundary between humans and devices. Integrating electronic devices into clothing represents an important path to this vision; however, combining conductive materials with textiles is challenging due to the porous structure of knitted textiles. Stretchability depends on maintaining the void structure between the yarns of the fabric; filling these voids with conductive materials stiffens the textile and can lead to detrimental cracking. The authors demonstrate the solution-based metallization of a knitted textile that conformally coats individual fibers with gold, leaving the void structure intact. The resulting gold-coated textile is highly conductive, with a sheet resistance of 1.07 per square in the course direction. The resistance decreases by 80% when the fabric is stretched to 15% strain, and remains at this value to 160% strain. This outstanding combination of stretchability and conductivity is accompanied by durability to wearing, sweating, and washing. Low-cost screen printing of a wax resist is demonstrated to produce patterned gold textiles suitable for electrically connecting discrete devices in clothing. The fabrication of electroluminescent fabric by depositing layers of device materials onto the gold-coated textile is furthermore demonstrated, intimately merging device functionality with textiles for imperceptible wearable devices.