Hybrid microfluidic sensors fabricated by screen printing and injection molding for electrochemical and electrochemiluminescence detection

Bernard Treves Brown, Zainab Mohammed Redha, Sara J. Baldock, Peter R. Fielden, Nick J. Goddard, Bernard J Treves Brown, Barry G D Haggett, Roberto Andres, Brian J. Birch

    Research output: Contribution to journalArticlepeer-review

    Abstract

    An integrated microfluidic/electrochemical sensor with a dual working electrode configuration was fabricated for voltammetric and electrochemiluminescence (ECL) applications. The fabrication method integrates the two techniques of injection molding and screen printing for the first time. Injection molding is used to fabricate the flow cell with integrated electrical and fluidic connectors. Screen printing was used to print the electrodes directly onto the injection molded base plate. An over molding procedure followed by ultrasonic welding was used to form the complete sensor. The electrochemical and ECL performance of the sensors was assessed by applying different electrochemical methods such as cyclic voltammetry (CV), anodic stripping voltammetry (ASV) and chronoamper-ometry. The attractive analytical performance demonstrates good capability of the disposable sensors for routine online electrochemical and ECL measurements. © 2009 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.
    Original languageEnglish
    Pages (from-to)422-430
    Number of pages8
    JournalElectroanalysis
    Volume21
    Issue number3-5
    DOIs
    Publication statusPublished - Feb 2009

    Keywords

    • Anodic stripping voltammetry
    • Electrochemical sensor
    • Electrochemiluminescence
    • Injection molding
    • Screen printed electrodes

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