Authors: Katsufumi Tanaka Takanobu Hira Ryuichi Fukui Haruki Kobayashi Ryuichi Akiyama Masami Nakano Shouta Enami Atsushi Totsuka
Publish Date: 2012/11/18
Volume: 291, Issue: 5, Pages: 1279-1286
Abstract
Electrorheological ER nanosuspensions based on titanium dioxide nanoparticles with particle diameter on the order of 100 nm were prepared Microgap flow behavior and microstructure were evaluated for the suspensions with a particle volume fraction of 88 vol For the nanosuspension based on a silicone oil the ER effect and flow behavior were found to be stable during the sharing time on the order of 102 s The ER response measured at a given strength of the electric field for the nanosuspension 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 nanosuspension based on the silicone oil but slightly lower than that based on a hydrocarbon oil Furthermore the relaxation of the ER response after removal of the electric field was somewhat slow for the nanosuspension based on the hydrocarbon oil whereas it was fairly well for the nanosuspension based on the modified silicone oil
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