Kwon, Chaebeen Seong, Duhwan Ha, Jeongdae Chun, Dongwon Bae, Jee Hwan Yoon, Kukro Lee, Minkyu Woo, Janghoon Won, Chihyeong Lee, Seungmin Mei, Yongfeng Jang, Kyung-In Son, Donghee Lee, Taeyoon 2024-01-19T16:03:04Z 2024-01-19T16:03:04Z 2021-09-02 2020-12 1616-301X https://pubs.kist.re.kr/handle/201004/117809 Advances in electronic textiles (E-textiles) for next-generation wearable electronics have originated from making a balance between electrical and mechanical properties of stretchy conductive fibers. Despite such progress, the trade-off issue is still a challenge when individual fibers are woven and/or stretched undesirably. Time-consuming fiber weaving has limited practical uses in scalable E-textiles. Here, a facile method is presented to fabricate ultra-stretchable Ag nanoparticles (AgNPs)/polyurethane (PU) hybrid conductive fibers by modulating solvent diffusion accompanied by in situ chemical reduction and adopting a tough self-healing polymer (T-SHP) as an encapsulation layer. First, the controlled diffusivity determines how formation of AgNPs is spatially distributed inside the fiber. Specifically, when a solvent with large molecular weight is used, the percolated AgNP networks exhibit the highest conductivity (30 485 S cm(-1)) even at 300% tensile strain and durable stretching cyclic performance without severe cracks by virtue of the efficient strain energy dissipation of T-SHP encapsulation layers. The self-bondable properties of T-SHP encapsulated fibers enables self-weavable interconnects. Using the new integration, mechanical and electrical durability of the self-bonded fiber interconnects are demonstrated while stretching biaxially. Furthermore, the self-bonding assembly is further visualized via fabrication of a complex structured E-textile. English WILEY-V C H VERLAG GMBH Self-Bondable and Stretchable Conductive Composite Fibers with Spatially Controlled Percolated Ag Nanoparticle Networks: Novel Integration Strategy for Wearable Electronics Article 10.1002/adfm.202005447 1 ADVANCED FUNCTIONAL MATERIALS, v.30, no.49 ADVANCED FUNCTIONAL MATERIALS 30 49 N scie scopus 000568843300001 2-s2.0-85090785323 Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article CARBON-NANOTUBE FIBERS SILVER NANOPARTICLES SENSOR WIRE SPUN YARN fiber component integration self-bondable conductive fibers stretchable and flexible interconnects wearable electronics