Screen printed stretchable dry ECG sensors

This project designed a fully screen-printable, skin-conformal electrode for ECG monitoring. Polyimide (PI) mixed with poly(ethylene glycol) exhibits a shear-thinning behavior, significantly improving the printability of PI. A Ag/AgCl ink is then used for conductive layer printing. The serpentine pattern of the screen-printed electrode accommodates natural deformation under stretching (30%) and bending conditions (180°), which are verified by computational and experimental studies. Real-time wireless electrocardiogram monitoring is also successfully demonstrated using the printed electrodes with a flexible printed circuit.

Relevant Papers

Fully Screen-Printed PI/PEG Blends Enabled Patternable Electrodes for Scalable Manufacturing of Skin-Conformal, Stretchable, Wearable Electronics

ACS Applied Materials and Interfaces

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