Flexible and Portable Electrochemical System for the Detection of Analytes

This paper is focused on the development of a flexible and portable electrochemical system that can be used with a variety of two and three-electrode sensors while maintaining tremendous accuracy. Both the two-electrode and three-electrode sensors were created from a copper sheet using a laser etching process. The fabricated sensor was connected to a printed circuit board that was custom designed to measure the sensor response using different electrochemical techniques such as cyclic voltammogram as well as chronoamperogram towards varying concentrations of analytes. Once the sensor is calibrated, the system was able to detect the chemical concentrations and transmit the results wirelessly through Bluetooth. The system is powered with a 3.7V rechargeable lithium polymer battery which pulls ~2.8 mA resulting in a very low power consumption. Post analysis was performed on the custom smartphone application to view the analyte concentrations and record the results.