Screen printed MWCNT/PDMS based dry electrode sensor for electrocardiogram (ECG) measurements

This paper reports on the development of a novel printed and flexible dry electrode sensor consisting of multi-walled carbon nanotube (MWCNT)/ polydimethylsiloxane (PDMS) composite for electrocardiogram (ECG) measurements. The sensor was screen printed using silver (Ag) flake ink on flexible polyethylene terephthalate (PET) substrate. MWCNT/PDMS was then bar coated on the screen printed electrode. The capability of the printed sensor, which is conformal enough to have a better electrode-skin contact without the use of wet gel and skin preparation, was demonstrated. The response of the flexible dry electrode sensor is analyzed and presented in this paper.