Measurement of the dynamic surface tension in liquids by means of gas bubbles generated at single nucleation site electrodes

A. Volanschi, A. Volanschi, Wouter Olthuis, Piet Bergveld

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    Abstract

    A new method is proposed for the measurement of dynamic surface tension in aqueous solutions. The advantage of this method with respect to the classical method based on sparging is that the use (of gas pumps is avoided, resulting in a miniaturised system. This method is based on the in-situ generation of gas bubbles by means of electrolysis at Microcavity Electrodes (MCE). As a consequence of electrode surface shaiping, a single nucleation site for gas bubbles is created. The MCE is used simultaneously as a bubble actuator (generator) and as a bubble size andlor frequency sensor. Measurement results prove the suitability of the electrolytical method for the monitoring of the dynamic surface tension in aqueous solutions.
    Original languageUndefined
    Title of host publicationProceedings 1996 National Sensor conference
    Place of PublicationDelft
    PublisherIEEE
    Pages17-20
    ISBN (Print)90-407-1321-9
    Publication statusPublished - 20 Mar 1996
    EventTransducers '95 - Eurosensors IX: 1995 8th International Conference on Solid-State Sensors and Actuators and Eurosensors - Stockholm, Sweden
    Duration: 25 Jun 199529 Jun 1995
    Conference number: 9

    Publication series

    Name
    PublisherIEEE

    Conference

    ConferenceTransducers '95 - Eurosensors IX: 1995 8th International Conference on Solid-State Sensors and Actuators and Eurosensors
    CountrySweden
    CityStockholm
    Period25/06/9529/06/95

    Keywords

    • METIS-113756
    • IR-56020

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