Evidence of nematic phases in electrorheological fluid by acoustic impedance measurement

    Authors

    X. D. Duan; W. Wu; T. Y. Zhou;W. L. Luo

    Comments

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    Abbreviated Journal Title

    J. Phys. D-Appl. Phys.

    Keywords

    ELECTRIC-FIELD; Physics, Applied

    Abstract

    Phase transitions of an electrorheological (ER) fluid were studied by measuring its shear specific acoustic impedance with increasing electric field. Two nematic phases were found for the first time in experiment and they confirmed the theoretical prediction. It is proved that measuring acoustic impedance is a unique way to study the structure formation in non-transparent ER fluids where the optical techniques are not available. The measuring results also demonstrate that ER fluids have potential of being active impedance matching devices.

    Journal Title

    Journal of Physics D-Applied Physics

    Volume

    33

    Issue/Number

    7

    Publication Date

    1-1-2000

    Document Type

    Article

    Language

    English

    First Page

    L57

    Last Page

    L59

    WOS Identifier

    WOS:000086783800001

    ISSN

    0022-3727

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