Evanescent wave sensing: new features for detection in small volumes

G. Pandraud, T.M. Koster, C. Gui, Mindert Dijkstra, Albert van den Berg, Paul Lambeck

    Research output: Contribution to journalArticleAcademicpeer-review

    49 Citations (Scopus)

    Abstract

    The association by aligned direct bonding of an evanescent wave optical sensor and small-volume flow cells for visible absorption detection is demonstrated. We show that for sample volumes ranging from 760 to 190 nl and a sensor interaction length of 1 mm, very small cross-sectional dimensions of fluid channels are no more a serious obstacle for optical detection. The lowest limit for the channel depth is the penetration depth of the
    Original languageUndefined
    Pages (from-to)158-162
    Number of pages5
    JournalSensors and actuators. A: Physical
    Volume85
    Issue number1-3
    DOIs
    Publication statusPublished - 2000

    Keywords

    • IR-15207
    • METIS-112082

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