Flexible surface myoelectric electrodes based on fiber skeleton reinforcement

Abstract

Abstract: A flexible surface myoelectric electrode based on a polydimethylsiloxane （PDMS）/silver paste/PDMS@fiber skeleton@flexible silver paste three-layer structure was proposed. The resistance changes under different external stimuli such as bending and twisting were analyzed， and the stability of the electrodes was evaluated through adhesion and ultrasonic experiments. The results indicated that such a three-layered flexible surface EMG electrode had a high conductivity of below 0.5 Ω/sq， excellent resistance stability with a resistance change rate lower 3 % after 1 000 bending）， good mechanical strength with an electrode-substrate adhesion higher than 1 000 N/m， and good skin consistency. When used for an electrical muscle sensor， the developed electrode could effectively recognize various movement intensities with a signal-to-noise ratio， which was 36 % and 49 % higher than those of the conventional Ag/AgCl gel electrode and copper electrode， respectively.

Key words: fibroskeleton, surface muscle electrical electrodes, three-decker

References

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