A new possibility of thick film biosensors substrate properties measurement

Abstract

The aim of our work is to find effective way for study of TFT biosensors electrode substrates properties during biosensors fabrication, which is crucial question for the next development of this perspective technology. A new electrochemical analytical device was developed to ensure a defined mass transport to the electrodes, which is the most limiting process that influences the response quality of the sensor. The device consists of rotating conic vessel for measured sample and the thick film amperometric sensor trenching in. This new electrochemical analytical solution was registered for patenting. The biosensors' substrate responses were tested on basic electrochemical couple of potassium ferrocyanide-ferricyanide. Thick film biosensor's substrate response dependence on the liquid velocity and geometrical arrangement is presented.