Dielectric and electrical properties of electrorheological carbon suspensions
| Autor: | Yasuhito Misono, Takeo Yamaguchi, Keishi Negita, J. Shinagawa |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Permittivity
Materials science Physics::Optics Astrophysics::Cosmology and Extragalactic Astrophysics Dielectric Thermal conduction Silicone oil Surfaces Coatings and Films Electronic Optical and Magnetic Materials Dielectric spectroscopy Electrorheological fluid Biomaterials Shear (sheet metal) Condensed Matter::Materials Science chemistry.chemical_compound Colloid and Surface Chemistry chemistry Electrical resistivity and conductivity Composite material |
| Zdroj: | Journal of Colloid and Interface Science. 321:452-458 |
| ISSN: | 0021-9797 |
| DOI: | 10.1016/j.jcis.2008.01.054 |
| Popis: | Measurements of electrorheological (ER) effects, dielectric properties, and electrical conductivity are made on an ER suspension composed of carbonaceous particles and silicone oil to understand the mechanism which governs the ER effect. In the frequency dependence of the dielectric permittivities, a dielectric dispersion is observed in the first-order dielectric permittivity, while in the third-order dielectric permittivity a resonance peak, which is due to shear-induced particle rotation, is recognized, showing that such dielectric properties are closely related to ER properties of the suspension. An electrical conduction mechanism, which is responsible for the ER effect, is also investigated from the dependence of dc electrical conductivity on electric-field strength and temperature. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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