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A smart fluids; Magneto rheological, ferrofluid, and nanofluids; a prospect for Medical and Technological application

Gizachew Diga


The physiochemical and biomedical applications of smart fluids, typically ferrofluid, magnetorheologicalfluids, and nanofluids are studied. It is predicted that these fluids are impacted by the three most important rheology parameters, namely strain, magnetic field, and temperature. The magnetoresistive contribution is treated in terms of drug force in order to determine thecoefficient of viscosity. The research presents that the viscosity of studied fluids will increase in proportion to applied magnetic field. The variables accounting for the resulting coefficient of viscosity are fluid density, drag force,shear strain, and magnetic field. On the other hand, the action of controlled fields on bee honey, blood,yolk, and lava lake shows that they behave as magnetorheological fluids. By computing the coefficient of viscosity and strain, it is possible to determine the dispersion relation. This relation reveals that the angular frequency is a function of mass, electric charge, magnetic field, and position. From the crystal
dynamics, the dispersion relations for magnetorheological fluids/ferrofluids is determined and compared with dispersions relation of solids (phonons), plasma, and spin excitations (magnons). On the basis of the calculated dispersion relations, the biomedical and technological applications of smart fluids are predicted. This paper is aimed at investigating some of the new features and applications of these fluids in electromechanical systems, medicine, and nanotechnology.


Dispersion relation, ferrofluid, Magnetorheological fluids, nanofluids, Smart fluids, Rheology, Viscosity

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