Abstract
Electro-rheological (ER) nano-suspensions based on titanium dioxide nano-particles with particle diameter on the order of 100 nm were prepared. Micro-gap flow behavior and microstructure were evaluated for the suspensions with a particle volume fraction of 8.8 vol%. For the sample based on a silicone oil, the ER effect and flow behavior were found to be stable during the sharing time on the order of 10_2s. The ER response measured at a given strength of the electric field for the sample based on a chemically-modified silicone oil was effectively induced by the electric field, especially with low strengths, and it was larger than that of the sample based on the silicone oil. Furthermore, the reversibility of the ER response was fairly well for the sample based on the modified silicone oil.
