Circuit Design for Bacterial Detection System

Infection of bacteria nowadays become a serious matter, especially in medical health care. Some species of bacteria could bring disease and threaten death. Much research is concerned with the detection and prevention of harmful bacteria. Recently, electrochemistry is important for analyses in applications including clinical diagnostics, environmental, food monitoring, quality control, and wearable devices for personal health. The electrochemistry technique is one of the ways to detect the existence of bacteria. Designs of a circuit that act like a potentiostat were proposed in this study. Simulation on the analog circuit was examined to get the best circuit construction. In detecting a bacterium, different electrochemical techniques such as cyclic voltammetry (CV) were used. This project focuses on designing an analog circuit of a potentiostat. The measurement of the current at the working electrode is the desired result that will characterize the performance of the circuit as well as the sample detected.