Chung King Yan, Tan Di, He Ziyu, Li Xiao, Lu Jian, Yang Qingjun, Liu Xinlong, Xu Bingang
Nanotechnology Center, School of Fashion and Textiles, The Hong Kong Polytechnic University, Hong Kong, 999077, China.
Department of Mathematics and Information Technology, The Education University of Hong Kong, Hong Kong, 999077, China.
Adv Mater. 2025 Jul 14:e2415702. doi: 10.1002/adma.202415702.
Soft electronics textiles have garnered global attention for their wearability and promising applications in healthcare, energy devices, and artificial intelligence. Recently, direct-ink-writing (DIW) technology has shown a growing trend because of its controllability, ease of fabrication, and efficiency. However, the design novelty of printable ink for soft electronic textiles is severely hampered by the intrinsic challenges of integrating printability, conductivity, stretchability, biocompatibility, and durability. Herein, a reusable DIW bio-carbon gel ink is proposed for printing soft electronic textiles where cottonseed peptone-functionalized multi-wall carbon nanotubes (CPCNTs) exhibit high dispersibility and reactive surface groups, enabling stable cross-linking with phytic acid (PA) and polyvinyl alcohol (PVA) to form a strong ionic polymer composite. Encouragingly, the gel ink can be directly exploited to design complex circuits and versatile electronics via DIW printing on both polymeric and textile substrates. The viscoelasticity, mechanical recovery, electric properties, robustness, and stretchable architectures enable it to function as flexible circuits, smart sensors, and renewable generators. As demonstrations, multifunctional applications are presented by real-time healthcare monitoring, LED lighting, and power generation. Furthermore, this printable gel ink is effectively assembled into an integrated wearable unit for robot manipulation and real-time gesture recognition, suggesting a significant printing strategy for next-generation wearable electronics.
柔软电子纺织品因其可穿戴性以及在医疗保健、能源设备和人工智能领域的广阔应用前景而备受全球关注。近来，直接墨水书写（DIW）技术因其可控性、易于制造和高效性而呈现出日益增长的趋势。然而，用于柔软电子纺织品的可印刷墨水在设计新颖性方面受到严重阻碍，这是由于在整合可印刷性、导电性、拉伸性、生物相容性和耐久性等方面存在内在挑战。在此，我们提出了一种可重复使用的DIW生物碳凝胶墨水用于印刷柔软电子纺织品，其中棉籽蛋白胨功能化的多壁碳纳米管（CPCNTs）具有高分散性和活性表面基团，能够与植酸（PA）和聚乙烯醇（PVA）稳定交联形成强离子聚合物复合材料。令人鼓舞的是，这种凝胶墨水可通过在聚合物和纺织基材上进行DIW印刷直接用于设计复杂电路和多功能电子产品。其粘弹性、机械恢复性、电学性能、坚固性和可拉伸结构使其能够用作柔性电路、智能传感器和可再生发电机。作为示例，通过实时医疗监测、发光二极管照明和发电展示了其多功能应用。此外，这种可印刷凝胶墨水被有效地组装成一个集成可穿戴单元，用于机器人操作和实时手势识别，这为下一代可穿戴电子产品提出了一种重要的印刷策略。
