Development of a Flexible and Conformable EEG Sensors Using 3D Printing Process

Abstract

A novel electroencephalography (EEG) sensor was developed for monitoring and recording the electrical activity of the brain. A sensing electrode were developed by 3D printing Formlabs 80A flexible resin and coated with silver epoxy as well as a silver spray paint to make the electrodes conductive. The conductivity of the sensors was measured at 7.70 E+03 S/m. The electrodes are flexible and conformable enough to be worn on the head for extended periods of time without causing strain to the user. The current sensing electrodes in the market are stiff and cause headaches after extended periods of testing. The 3D printed sensing electrodes generated similar signal quality when compared to commercial electrodes while providing a far higher level of comfort.