Publication date: 8th January 2019
Traditional textile fibers are very comfortable to use in wearable applications, however, they are not electrically conductive. In this study, we employed silver nanowires to lower the electrical resistance of traditional textile materials to create flexible and stretchable sensors. Silver nitrate salt was used as a precursor to synthesize silver nanowires according to the polyol method. The diameter and the length of the synthesized silver nanowires were characterized using a scanning electron microscope images. These AgNWs were applied on various yarns, fabrics, and nonwoven pads using drop coating, method. After the coating step with Pasteur pipette, textile materials were fully dried in an oven at 50 °C for 30 minutes and then a multimeter was used for electrical characterization. Our bending and stretching experiments shows that knitted fabrics and nonwoven pads present excellent flexibility. To demonstrate the application of these flexible conductive textile materials in flexible wearable appliacitons we have created capacitive based sensors. These sensors were used to detect body motions, respiration and to control electronic devices wirelessly. These results proves that silver nanowire coated knitted and nonwoven pads can be used in wearable health sensors and smart textile applications
WEARONICS project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No. 739891
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