Multifunctional Electronic Textiles by Direct 3D Printing of Stretchable Conductive Fibers

The integration of functional fibers into wearable devices by traditional methods is commonly completed in weaving. A new post-weaving method integrating fiber textiles needed to address the challenge incorporating ready-made garments without tearing down clothing and re-weaving. 3D printing simultaneously fabricate integrate highly stretchable conductive with designed patterns presented. fabricated sheath–core consists a styrene–ethylene–butylene–styrene (SEBS) shell Ga–In–Sn alloy liquid metal core. SEBS guarantees high stretchability (up 600%) flexibility, while core offers conductivity maintained at large deformation. It shown that sophisticated patterns, which have millimeter-level-resolution are difficult be integrated weaving, even more laborious incorporated garments, can now easily modified implemented both time-saving low-cost method. Utilizing electrical characteristics pre-designed on-clothing soft electronics printed directly. strain sensor, bending wireless charging coil, touch-sensing network demonstrated show potential applications electronics.