NANOTECHNOLOGY IN HIGH YIELD STRESS SMART FLUIDS- A REVIEW.
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Abstract
Electrorheological (ER) and Magnetorheological (MR) nano-fluids show dramatic and tunable changes in their rheological properties under external magnetic or electric field strength respectively. These nano-fluids can be effectively incorporated in various engineering applications like shock absorber, dampers, clutches etc. The major problem to use these nano-fluids practically is their low yield strength and problem of sedimentation. In this paper various smart nano-fluids (ER & MR) have been studied. Special attention is given on development of stable, re-dispersible, durable, high yield stress smart nano-fluids with low sedimentation rate. In this paper these nano-fluids are reviewed along with their rheological characteristics under external fields.
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