Vertically-aligned multiwalled carbon nanotubes (VA-MWCNTs) were grown using plasma
enhanced chemical vapor deposition (PECVD) technique. These VA-MWCNTs were then dip
coated by Poly methyl methacrylate (PMMA) followed by annealing. Samples were then
polished to expose the tips of CNTs. Biological molecules Glucose Oxidase (GOx) were then
immobilized on the exposed tips of these nanoelectrode ensembles. Here we present further
characterization of these devices, with results on the detection limits and measurement stability.
We found that these sensors can be reused for longer than six months when kept in proper
storage conditions.