Highly Conductive Tough Fiber for E-textile Applications
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초록
내용
Conductive fibers are transforming applications like sensors, communications, artificial muscles, and biosensors due to their flexibility, elasticity, and cost-effective production. However, during vigorous moving or perspiration, the limited skin adhesion of the body, coupled with increased impedance at the interface and motion-related disruptions, present challenges in maintaining long-term biopotential recordings. Herein, we introduce bilayer-structured microfibers coated with eutectic gallium-indium alloy (EGaIn) and Ag flakes–waterborne polyurethane complex filler matrix, enabled by a streamlined capillary tube-assisted coating (CTAC) process. A double-layer structure obtained by continuous coating approach ensures 20-meter-long uniformity with both enhanced electrical conductivity of 6423 S/cm and mechanical young’s modulus of 6.22 MPa despite submerged in water up to 24 days.