The 64th JSAP Spring Meeting, 2017

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Poster presentation

6 Thin Films and Surfaces » 6.2 Carbon-based thin films

[16p-P3-1~23] 6.2 Carbon-based thin films

Thu. Mar 16, 2017 1:30 PM - 3:30 PM P3 (BP)

1:30 PM - 3:30 PM

[16p-P3-9] High-sensitive Detection of Redox Analytes with Standard Potential Higher than O2 Evolution by Using Ultramicro Interdigitated Array Electrodes Based on Boron-doped DLC

〇Shimpei Otomo1, Hiroshi Naragino1, Keigo Okafuji1, Kensuke Honda1 (1.Yamaguchi Univ.)

Keywords:Conductive amorphous carbon film, Interdigitated array electrodes, High-sensitive ditection

The objective of this study is highly sensitive detection of redox analytes with higher overpotential than O2 evolution such as Ce3+/4+. In previously report, the amplification of amperometric current has been obtained by interdigitated array electrodes based on a conductive diamond-like carbon (B-DLC-IDA) with a wide working potential range. The B-DLC-IDA electrodes has been composed of two sets of microband array with 2.0-μm bandwidth and 2.0-μm intervals. The amperometric current at IDA electrodes was 300 larger than that at the flat DLC electrode. In this report, the amplification was doubled again by reducing bandwidth and intervals to 1.0-μm.