Results and Discussions

This chapter indicates that the vertically aligned MWCNTs were successfully synthesized on a silicon substrate via the CVD method with different morphological properties. The crystallinity of synthesized MWCNTs was also optimized using statistical analysis to control the growth condition and defect amount of CNTs. In line with the previous chapter, the optimized MWCNT was used to obtain the MWCNT/GL matrix to improve the direct electron transfer processes between GOx and modified GCE through hydrophobic-hydrophobic interactions in forming stable dispersions of MWCNTs. The GCE modified by GOx/MWCNTs/Gl was used for glucose detection approaches based on the electrochemical method. Furthermore, the GOx /MWCNTs/Gl/GCE was employed to fabricate an electronic tongue for sweetness diagnoses by recording frequency response of the glucose biosensor. The frequency results recorded by oscilloscope indicate that, by adding different glucose concentrations to electrochemical cells connected to the circuit, the output oscillation frequency changes.