Abstract
A micro glucose sensor consisting of an interdigitated array gold microelectrode was developed. The interdigitated array structure, which has 10 µm band width and 10 µm band gap, was fabricated in a small region (2.5 × 5 mm2) on a quartz substrate. Glucose oxidase was chemically fixed onto the electrode surface through self-assembled monolayer of 11-mercaptoundecanoic acid; ferroceneacetic acid was used as electron mediator. Electrochemical properties of the glucose oxidase-immobilized microelectrode were investigated by cyclic voltammogram measurements. Results confirmed that the reductive ferroceneacetic acid generated at counter electrode diffuses through a narrow band gap (10 µm) and can reach the working electrode surface.
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Jin, P., Yamaguchi, A., Asarioi, F. et al. Glucose Sensing Based on Interdigitated Array Microelectrode. ANAL. SCI. 17, 841–846 (2001). https://doi.org/10.2116/analsci.17.841
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DOI: https://doi.org/10.2116/analsci.17.841