Enhancing yield stress of electrorheological fluids with liquid crystal additive

    Authors

    X. D. Duan; H. Chen; Y. J. He;W. L. Luo

    Comments

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    Abbreviated Journal Title

    J. Phys. D-Appl. Phys.

    Keywords

    PARTICLE-SIZE; Physics, Applied

    Abstract

    The enhancement of yield stress of NaY/insulating oil electrorheological (ER) fluid is found by adding a liquid crystal additive with a higher dielectric constant than that of the carrier fluid. The yield stress increases with additive's concentration and saturates at high concentrations. A polarization model has been suggested to understand the role of the additives. The theoretical calculations agree with our experiments very well. We show that adding a small amount of additive with a high dielectric constant can drastically improve the yield stress even in a 'dry' ER fluid if the conductivity or dielectric constant of the additive is still much smaller than that of the dispersed particles.

    Journal Title

    Journal of Physics D-Applied Physics

    Volume

    33

    Issue/Number

    6

    Publication Date

    1-1-2000

    Document Type

    Article

    Language

    English

    First Page

    696

    Last Page

    699

    WOS Identifier

    WOS:000086173500018

    ISSN

    0022-3727

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