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Routine fabrication of reduced graphene oxide microarray devices via all solution processing

Authors

  • Ruben Lanche,

    1. Department of Informatics & Microsystem Technology, University of Applied Sciences Kaiserslautern, Amerikastr. 1, 66482 Zweibrücken, Germany
    2. Institute for Materials Research, Hasselt University, Wetenschapspark 1, 3590 Diepenbeek, Belgium
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  • Lotta E. Delle,

    1. Department of Informatics & Microsystem Technology, University of Applied Sciences Kaiserslautern, Amerikastr. 1, 66482 Zweibrücken, Germany
    2. Institute for Materials Research, Hasselt University, Wetenschapspark 1, 3590 Diepenbeek, Belgium
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  • Maryam Weil,

    1. Department of Informatics & Microsystem Technology, University of Applied Sciences Kaiserslautern, Amerikastr. 1, 66482 Zweibrücken, Germany
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  • Xuan Thang Vu,

    1. Department of Informatics & Microsystem Technology, University of Applied Sciences Kaiserslautern, Amerikastr. 1, 66482 Zweibrücken, Germany
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  • Vivek Pachauri,

    1. Department of Informatics & Microsystem Technology, University of Applied Sciences Kaiserslautern, Amerikastr. 1, 66482 Zweibrücken, Germany
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  • Walid M. Munief,

    1. Department of Informatics & Microsystem Technology, University of Applied Sciences Kaiserslautern, Amerikastr. 1, 66482 Zweibrücken, Germany
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  • Patrick Wagner,

    1. Institute for Materials Research, Hasselt University, Wetenschapspark 1, 3590 Diepenbeek, Belgium
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  • Sven Ingebrandt

    Corresponding author
    • Department of Informatics & Microsystem Technology, University of Applied Sciences Kaiserslautern, Amerikastr. 1, 66482 Zweibrücken, Germany
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Abstract

A method for the routine fabrication of graphene (reduced graphene oxide (r-GO)) based devices is reported. We describe a solution-based technique for the fabrication of the devices on alternative substrates and subsequent on-substrate processing of graphene oxide into reduced graphene oxide. As sensor platform we mainly used interdigitated gold electrodes forming microarray structures on glass substrates. Graphene oxide was site-specifically deposited onto microelectrode arrays by dielectrophoresis followed by a solution-based reduction of graphene oxide with L-ascorbic acid. In order to test the r-GO sensor stability and performance, impedance spectroscopy was used. The optimized all solution processed fabrication provides an attractive fabrication route for robust r-GO microarray devices in a flexible, scalable and cost-effective approach. pssa201200910-gra-0001

Schematics for a microarray chip based on reduced graphene oxide.

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