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Electrorheological Fluids of Coated Microspheres

Author

Listed:
  • K. W. Yu

    (Department of Physics, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, P.R. China)

  • Jones T. K. Wan

    (Department of Physics, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, P.R. China)

  • M. F. Law

    (Department of Physics, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, P.R. China)

  • K. K. Leung

    (Department of Physics, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, P.R. China)

Abstract

We study model electrorheological (ER) fluids which consist of three material components in an attempt to explain recent experimental results, in which the ER effects can be promoted by adding some water. At low water concentration, the droplets tend to aggregate on the surfaces of the dispersed particles, forming coated microspheres. The ER effects are analyzed via spectral representation, and the experimental conditions for optimal ER responses are obtained. At low frequencies, it is found that by tuning the thickness and dielectric properties of the coating materials, it is possible to enhance the effective dielectric constant, thereby increasing the applicability of the ER fluids.

Suggested Citation

  • K. W. Yu & Jones T. K. Wan & M. F. Law & K. K. Leung, 1998. "Electrorheological Fluids of Coated Microspheres," International Journal of Modern Physics C (IJMPC), World Scientific Publishing Co. Pte. Ltd., vol. 9(08), pages 1447-1457.
    • Handle: RePEc:wsi:ijmpcx:v:09:y:1998:i:08:n:s012918319800131x
    DOI: 10.1142/S012918319800131X
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    Cited by:

    1. Han, Guangze & Wang, Lin, 2018. "Phase equilibrium pressure of dielectric system under influence of electrostatic field," Energy, Elsevier, vol. 142(C), pages 90-95.
    2. Stén, Johan C.-E. & Essén, Hanno, 2023. "On the evaluation of electrostatic energy of volume charge distributions and the role of the Coulomb singularity," Mathematics and Computers in Simulation (MATCOM), Elsevier, vol. 205(C), pages 987-996.

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