Abstract
Sensor related research has greatly increased over the last two decades due to the need for technology and devices for health and environmental monitoring as well as for biological warfare detection. New developments in biosensor design are crucial as these devices are in increasing demand in daily life. This paper presents a device based on electrochemical sensing using a working electrode with zinc oxide (ZnO) nanorods functionalized with glucose oxidase (GOx). Among all metal oxide nanostructures, ZnO nano-materials play a significant role as a sensing element in biosensors due to their properties such as high isoelectric point (IEP), fast electron transfer, non-toxicity, biocompatibility, and chemical stability. The glucose sensor was designed and fabricated on a silicon substrate. The ZnO nanorods were grown by the hydrothermal technique. The sensor has a linear range of 0.1mM-10.6mM, sensitivity of 18.15μA cm-1 mM-1 and a limit of detection of 0.1mM.
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