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Glucose sensing based on interdigitated array microelectrode.

P Jin·A Yamaguchi·F A Oi·S Matsuo·J Tan·H Misawa
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Abstract

A micro glucose sensor consisting of an interdigitated array gold microelectrode was developed. The interdigitated array structure, which has 10 microns band width and 10 microns band gap, was fabricated in a small region (2.5 x 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 microns) and can reach the working electrode surface.

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Acetic AcidElectric CapacitanceElectrodesFerrous CompoundsGlucoseGlucose OxidaseGoldMetallocenesOxygenStatic ElectricityTime FactorsJournal ArticleResearch Support, Non-U.S. Gov't

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P Jin, A Yamaguchi, F A Oi, S Matsuo, J Tan, H Misawa. 2001. Glucose sensing based on interdigitated array microelectrode.. https://doi.org/10.2116/analsci.17.841

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