Development of Novel Lead-Free Ceramic Electrodes for the Acquisition of Bioelectric Potentials

Recently, experiments were conducted with potassium niobate (KNbO<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</inf>) ceramics, a lead-free material that possesses ferroelectric and piezoelectric properties, among others, by incorporating a platinum implant within them to evaluate their effectiveness as devices for recording electrical potentials from the human body. Using the proposed instrumentation, which includes an isolated differential amplifier and a lock-in amplifier, ECG, EMG, and EOG (eye movement recordings) were obtained. These recordings were compared with those obtained using conventional electrodes, showing similar results.