|
|
Study of Electrochemical Processes on Neuromodulation Electrodes
Vašíček, Čeněk ; Kratochvíl, Matouš (referee) ; Ehlich, Jiří (advisor)
This bachelor’s thesis deals with experiments on a neuromodulation electrode made of a platinum-iridium alloy. The thesis is focused primarily on local changes in concentration of oxygen and hydrogen peroxide based on a potential, that is applied. Experiments take place in two electrolytes – PBS and a mixture of Dulbecco’s modified eagle medium with fetal bovine serum (90:10). The goal is to compare the electrode’s behaviour in these electrolytes, mainly on how the surface of the electrode would be affected, if the electrochemical reactions would happen when a different potential is applied, or if they would be less effective in general etc. Changes in oxygen and hydrogen peroxide concentrations are measured using amperometric sensors, with the added measurement of hydrogen peroxide with a spectrophotometric assay consisting of horseradish peroxidase (HRP) and 3,3‘,5,5‘-tetramethylbenzidine (TMB). The next thing that the thesis deals with is stability of hydrogen peroxide in both electrolytes used. In the last part, suggestions on next steps in this topic are mentioned.
|
guest ::
