Scientists from the Research School of Chemical & Biomedical Technologies at Tomsk Polytechnic University have developed "dry" electrodes for recording human biopotentials, which have demonstrated high biocompatibility. These electrodes were tested on rabbits in collaboration with scientists from the Siberian State Medical University. The tests showed that the electrodes have low cytotoxicity, making them promising for use in smart clothing designed to monitor vital signs in athletes and outpatients.
The study notes that graphene oxide-based electrodes do not cause significant skin inflammation with prolonged use compared to traditional silver/silver chloride electrodes (Ag/AgCl).
Previously, scientists proposed a new approach to creating bioelectrodes based on graphene-polymer composites for long-term monitoring. They used laser treatment of graphene oxide on a textile substrate, which made it possible to create "dry" electrodes that are resistant to washing and do not require the use of a gel interface for contact with the skin. At this stage of the project, their electrochemical properties were improved, in particular, a decrease in polarization, which can negatively affect the accuracy of measurements. This makes the electrodes resistant to the accumulation of non-equilibrium charge, which is especially important for accurate monitoring of cardiac activity (ECG).
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