Background: Glucose sensors have been extensively researched in patent studies and manufactured
a tool for clinical diabetes diagnosis. Although some kinds of electrochemical enzymatic glucose
sensors have been commercially successful, there is still room for improvement, in selectivity and
reliability of these sensors. Because of the intrinsic disadvantages of enzymes, such as high fabrication
cost and poor stability, non-enzymatic glucose sensors have recently been promoted as next generation
diagnostic tool due to their relatively low cost, high stability, prompt response, and accuracy.
Objective: In this research, a novel free standing and binder free non-enzymatic electrochemical sensor
was manufactured using in situ grown copper (Cu) and cobalt (Co) on a silicon (Si) substrate.
Methods: Scanning High-Energy Electron Diffraction (SHEED) and Edward deposition methods were
used to synthesise the sensors.
Results: Morphological observations showed that Cu and Co homogeneously formed nanorod-like
shapes over the Si substrate. The elemental composition and structure of the prepared sensors were
identified by Reflection High-Energy Electron Diffraction (RHEED). In terms of electrochemical properties,
for the enzyme-free glucose sensor, voltammograms showed that the peak currents increased
when the glucose solution was injected into the electrolytic cell. The electrical relation of voltage versus
current was linear, as shown in the experimental data. Another effective parameter changed the magnetic
field; and the linear behaviour of the electrical resistance of Co remained unaltered.
Conclusion: In the optimum annealing temperature, where the magnetic field increased, the properties
of the samples remained constant. In other words, in the selected annealing temperature, resistance and
stability of the layers increased in a significant manner.