Integration of a nanoporous platinum thin film into a microfluidic system for non-enzymatic electrochemical glucose sensing

Segyeong Joo, Sejin Park, Taek Dong Chung, Hee Chan Kim

Research output: Contribution to journalArticleResearchpeer-review

35 Citations (Scopus)

Abstract

In this paper, we describe an amperometric-type enzymeless glucose sensing system based on a nanoporous platinum (Pt) electrode embedded in a microfluidic chip. This microchip system is comprised of a microfluidic transport channel network and a miniaturized electrochemical cell for nonenzymatic glucose sensing. Sample and buffer solutions were transferred to the cell by programmed electroosmotic flow (EOF). A nanoporous Pt electrode with the roughness factor of 200.6 was utilized to determine glucose concentrations in phosphate buffered saline (PBS) by the direct oxidation of glucose, without any separation process. The sensitivity of the developed system is 1.65 μA cm -2 mM -1 in the glucose concentration range from 1 - 10 mM in PBS. 2007

Original languageEnglish
Pages (from-to)277-281
Number of pages5
JournalAnalytical Sciences
Volume23
Issue number3
DOIs
StatePublished - 1 Jan 2007

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Platinum
Microfluidics
Glucose
Thin films
Phosphates
Electrodes
Electrochemical cells
Buffers
Surface roughness
Oxidation

Cite this

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Integration of a nanoporous platinum thin film into a microfluidic system for non-enzymatic electrochemical glucose sensing. / Joo, Segyeong; Park, Sejin; Chung, Taek Dong; Kim, Hee Chan.

In: Analytical Sciences, Vol. 23, No. 3, 01.01.2007, p. 277-281.

Research output: Contribution to journalArticleResearchpeer-review

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