Title: electrorheological effect
Long Title: IUPAC Gold Book - electrorheological effect
DOI: 10.1351/goldbook.08809
Status: current

Definition
Reversible change in the apparent viscosity of a liquid system such as suspension of polar or good polarizable microparticles in an oil, upon exposure of an electric field.

Note
Interaction of electric dipoles induced on suspended particles produces strands of particles spanning between electrodes, which results in a giant increase in the viscosity of the suspension (up to five orders of magnitude) during its exposure to an electric field.

Source
- PAC, 2022, 94, 15. 'Glossary of terms relating to electronic, photonic and magnetic properties of polymers (IUPAC Recommendations 2021)' on page 29 (https://doi.org/10.1515/pac-2020-0501)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/08809/html
- json: https://goldbook.iupac.org/terms/view/08809/json
- xml: https://goldbook.iupac.org/terms/view/08809/xml

Citation: Citation: 'electrorheological effect' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.08809
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Accessed: 2026-04-18T09:10:39+00:00