Electrorheological effects depending on the dispersity of lyophilic or lyophobic particles
| Autor: | Z.N. Fang, H.T. Xue, Linuo Zhou, Wenzhong Bao, Jiping Huang, Yeping Yang |
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| Rok vydání: | 2007 |
| Předmět: |
Materials science
Suspended particles Dispersity General Physics and Astronomy Nanotechnology Astrophysics::Cosmology and Extragalactic Astrophysics Dielectric Condensed Matter::Soft Condensed Matter Physics::Fluid Dynamics Surface tension Chemical engineering Colloidal particle Particle Wetting Physical and Theoretical Chemistry |
| Zdroj: | Chemical Physics Letters. 441:314-317 |
| ISSN: | 0009-2614 |
| DOI: | 10.1016/j.cplett.2007.05.048 |
| Popis: | We theoretically investigate the relations among electrorheological (ER) effects of ER fluids, zero-field dispersity of colloidal particles and particle wettability, and find that well dispersed particles resulting from particle wettability have much stronger attraction than those aggregated into different clusters. We reveal that, to achieve ER effects, besides improving dielectric properties of ER particles, it is also helpful to reduce the surface tension of liquids, which leads to higher wettability of suspended particles and thus better zero-field dispersity of the particles due to lyophilic repulsive forces between them. Our theoretical results are applied to explain qualitatively the experiments by others. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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