Study on Micro Dried Bio-potential Electrodes Using Conductive Epoxy on Textile Fabrics

Abstract

In this paper, micro dried bio-potential electrodes are demonstrated for sEMG (surface ElectroMyoGraphic) signal measurement using conductive epoxy on the textile fabric. Micro dried bio-potential electrodes on the textile fabric substrate have several advantages over the conventional wet/dry electrodes such as good feeling of wearing, possibility of extended-wearing due to the good ventilation. Also these electrodes on the textile fabric can easily apply to the curved skin surface. These electrodes are fabricated by the screen-printing process with the size of 1 mm×10 mm and the resultant resistance of these electrodes have the average value of 0.4 Ω. The conventional silver chloride electrode shows the average value of 0.3 Ω. However, the electrode on the textile fabric are able to measure the sEMG signal without feeling of difference and this electrode shows the lower resistance of 1.03 Ω than conventional silver chloride electrode with 2.8 Ω in the condition of the very sharp curve surface (the radius of curvature is 40 mm).