Self-testing of micro-electrode array implemented as a bio-sensor

H. Liu, N. Dumas, A. Richardson

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    Abstract

    Micro-electrode array (MEA) is widely used in bio-sensor systems. The surface degradation of MEA is a frequently reported problem by its end-users (Qinetiq Winfrith). A self-testing method is developed by comparing the impedance of each electrode and thus obtaining a distribution of all the impedance amplitude comparing with an arbitrary one in a 2D plane. Based on the fact that the surface degradation will generally increase the impedance and the assumption that the majority of the electrodes are fault-free, then the degraded electrodes can be identified. In the following parts of this paper, firstly analysis of electrode degradation based on its interfacial impedance is given with the support of both simulation and experiment data. Then the developed self-testing idea is explained in detail. A conclusion is drawn finally. This work continues from a preliminary early work published in IMSTW'6 [l].
    Original languageEnglish
    Title of host publication13th International Mixed Signals Testing Workshop and 3rd International GHz/Gbps Test Workshop
    Place of PublicationPortugal
    PublisherIEEE Portugal Section
    Pages166-170
    Number of pages5
    ISBN (Print)978-972-99181-2-4
    Publication statusPublished - 18 Jun 2007
    Event13th International Mixed Signals Testing Workshop and 3rd International GHz/Gbps Test Workshop 2007 - Povoa de Varzim, Portugal
    Duration: 18 Jun 200720 Jun 2007
    Conference number: 13
    http://paginas.fe.up.pt/~imstw07/

    Workshop

    Workshop13th International Mixed Signals Testing Workshop and 3rd International GHz/Gbps Test Workshop 2007
    Abbreviated titleIMSTW/GTW
    CountryPortugal
    CityPovoa de Varzim
    Period18/06/0720/06/07
    Internet address

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