Enhancement of electrorheological effect by particle-fluid interaction
Authors:
- F. Aliotta,
- P. Calandra,
- Mikołaj Pochylski,
- R.C. Ponterio,
- G. Salvato,
- C. Vasi
Abstract
The influence of interactions between particle surface and host fluids in electrorheological suspensions is explored. It is observed that dispersions of nanosized particles of titania in octanoid acid exhibit an anomalously large electrorheologic effect when compared with a similar dispersion of micrometric particles or with a more conventional colloidal suspension of silica in silicone oil. The effect is interpreted as originated by the formation of a thin layer of octanoid acid molecules with the surface of the titania solid particle. The experimental data are fitted with the outcomes of a modified version of conductive models existing in the literature. It is suggested that anomalous large electrorheological effect is mainly originated by the increasing of the effective radius of the nanometric particles, which results in an increasing of the effective volume fraction of the dispersed phase. It is also shown that the deformation of the soft shell around the solid particles, induced by Coulombic force, plays a not negligible role. Some hints for tailoring electrorheologic fluids suitable for different applications are proposed. © 2013 American Physical Society.
- Record ID
- UAM04a6f440b6504fdeafd09c709fced760
- Author
- Journal series
- Physical Review E, ISSN 1539-3755
- Issue year
- 2013
- Vol
- 87
- ASJC Classification
- ; ;
- DOI
- DOI:10.1103/PhysRevE.87.062304 Opening in a new tab
- Language
- (en) English
- Score (nominal)
- 35
- Score source
- journalList
- Score
- Publication indicators
- = 2; = 1; : 2014 = 1.123; : 2013 (2 years) = 2.326 - 2013 (5 years) =2.302
- Uniform Resource Identifier
- https://researchportal.amu.edu.pl/info/article/UAM04a6f440b6504fdeafd09c709fced760/
- URN
urn:amu-prod:UAM04a6f440b6504fdeafd09c709fced760
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or PerishOpening in a new tab system.