Stem Cell and Biomaterials

Biosensor

A biosensor can be defined as an analytical device which converts a biological response into an electrical signal. The device is formed from a electrical device associated a biological element which will be an enzyme, an antibody or a nucleic acid. The bio element interacts with the analyte being tested and also the biological response is converted into an electrical signal by the electrical device. Biosensor substrate contains three electrodes; 1) a working electrode, 2) a reference electrode and, 3) a counter electrode.