A new floating electrode structure for generating homogeneous electrical fields in microfluidic channels

    Research output: Contribution to journalArticleAcademicpeer-review

    5 Citations (Scopus)

    Abstract

    In this article a new parallel electrode structure in a microfluidic channel is described that makes use of a floating electrode to get a homogeneous electrical field. Compared to existing parallel electrode structures, the new structure has an easier production process and there is no need for an electrical connection to both sides of the microfluidic chip. With the new chip design, polystyrene beads suspended in background electrolyte have been detected using electrical impedance measurements. The results of electrical impedance changes caused by beads passing the electrodes are compared with results in a similar planar electrode configuration. It is shown that in the new configuration the coefficient of variation of the impedance changes is lower compared to the planar configuration (0.39 versus 0.56) and less dependent on the position of the beads passage in the channel as a result of the homogeneous electrical field. To our knowledge this is the first time that a floating electrode is used for the realization of a parallel electrode structure. The proposed production method for parallel electrodes in microfluidic channels can easily be applied to other applications
    Original languageUndefined
    Pages (from-to)1995-2001
    Number of pages7
    JournalLab on a chip
    Volume11
    Issue number12
    DOIs
    Publication statusPublished - 2011

    Keywords

    • EWI-20329
    • IR-77673
    • METIS-277715

    Cite this

    @article{85bded8b507b4dc892c123fdcc7a0fd2,
    title = "A new floating electrode structure for generating homogeneous electrical fields in microfluidic channels",
    abstract = "In this article a new parallel electrode structure in a microfluidic channel is described that makes use of a floating electrode to get a homogeneous electrical field. Compared to existing parallel electrode structures, the new structure has an easier production process and there is no need for an electrical connection to both sides of the microfluidic chip. With the new chip design, polystyrene beads suspended in background electrolyte have been detected using electrical impedance measurements. The results of electrical impedance changes caused by beads passing the electrodes are compared with results in a similar planar electrode configuration. It is shown that in the new configuration the coefficient of variation of the impedance changes is lower compared to the planar configuration (0.39 versus 0.56) and less dependent on the position of the beads passage in the channel as a result of the homogeneous electrical field. To our knowledge this is the first time that a floating electrode is used for the realization of a parallel electrode structure. The proposed production method for parallel electrodes in microfluidic channels can easily be applied to other applications",
    keywords = "EWI-20329, IR-77673, METIS-277715",
    author = "Segerink, {Loes Irene} and A.J. Sprenkels and Bomer, {Johan G.} and I. Vermes and {van den Berg}, Albert",
    note = "eemcs-eprint-20329",
    year = "2011",
    doi = "10.1039/c0lc00489h",
    language = "Undefined",
    volume = "11",
    pages = "1995--2001",
    journal = "Lab on a chip",
    issn = "1473-0197",
    publisher = "Royal Society of Chemistry",
    number = "12",

    }

    A new floating electrode structure for generating homogeneous electrical fields in microfluidic channels. / Segerink, Loes Irene; Sprenkels, A.J.; Bomer, Johan G.; Vermes, I.; van den Berg, Albert.

    In: Lab on a chip, Vol. 11, No. 12, 2011, p. 1995-2001.

    Research output: Contribution to journalArticleAcademicpeer-review

    TY - JOUR

    T1 - A new floating electrode structure for generating homogeneous electrical fields in microfluidic channels

    AU - Segerink, Loes Irene

    AU - Sprenkels, A.J.

    AU - Bomer, Johan G.

    AU - Vermes, I.

    AU - van den Berg, Albert

    N1 - eemcs-eprint-20329

    PY - 2011

    Y1 - 2011

    N2 - In this article a new parallel electrode structure in a microfluidic channel is described that makes use of a floating electrode to get a homogeneous electrical field. Compared to existing parallel electrode structures, the new structure has an easier production process and there is no need for an electrical connection to both sides of the microfluidic chip. With the new chip design, polystyrene beads suspended in background electrolyte have been detected using electrical impedance measurements. The results of electrical impedance changes caused by beads passing the electrodes are compared with results in a similar planar electrode configuration. It is shown that in the new configuration the coefficient of variation of the impedance changes is lower compared to the planar configuration (0.39 versus 0.56) and less dependent on the position of the beads passage in the channel as a result of the homogeneous electrical field. To our knowledge this is the first time that a floating electrode is used for the realization of a parallel electrode structure. The proposed production method for parallel electrodes in microfluidic channels can easily be applied to other applications

    AB - In this article a new parallel electrode structure in a microfluidic channel is described that makes use of a floating electrode to get a homogeneous electrical field. Compared to existing parallel electrode structures, the new structure has an easier production process and there is no need for an electrical connection to both sides of the microfluidic chip. With the new chip design, polystyrene beads suspended in background electrolyte have been detected using electrical impedance measurements. The results of electrical impedance changes caused by beads passing the electrodes are compared with results in a similar planar electrode configuration. It is shown that in the new configuration the coefficient of variation of the impedance changes is lower compared to the planar configuration (0.39 versus 0.56) and less dependent on the position of the beads passage in the channel as a result of the homogeneous electrical field. To our knowledge this is the first time that a floating electrode is used for the realization of a parallel electrode structure. The proposed production method for parallel electrodes in microfluidic channels can easily be applied to other applications

    KW - EWI-20329

    KW - IR-77673

    KW - METIS-277715

    U2 - 10.1039/c0lc00489h

    DO - 10.1039/c0lc00489h

    M3 - Article

    VL - 11

    SP - 1995

    EP - 2001

    JO - Lab on a chip

    JF - Lab on a chip

    SN - 1473-0197

    IS - 12

    ER -