Development and characterization of micro-reference electrodes for bioelectronics applications

The subject of this work was the construction and long term stability measurement of micro-reference electrodes based on anodized silver wire and titanium wire with Ag/AgCl paste. A measuring apparatus, with which the long term stability was measured, was constructed as a part of this work. These days, commercial reference electrodes are available on the market. These reference electrodes are characterized by their excellent long term stability, however, they are too large and too expensive to be used in bioelectronic systems. Because of this, the science community has been trying to miniaturize reference electrodes in the past years. Without reference electrodes, it is impossible to do most electrochemical measurements. Based on the long term stability of measured samples it was determined which of the samples meet the criteria for bioelectronic measurements. It was also determined which of the studied samples were most suitable. The last result of this work is a measuring apparatus that can measure the long term stability of up to thirty-two electrodes