Title

Enhancing Yield Stress Of Electrorheological Fluids With Liquid Crystal Additive

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.

Publication Date

3-21-2000

Publication Title

Journal of Physics D: Applied Physics

Volume

33

Issue

6

Number of Pages

696-699

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1088/0022-3727/33/6/317

Socpus ID

0033886041 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0033886041

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