Rheological response of magnetic fluid containing Fe3O4 nano structures

Saha, Priyanka; Mukherjee, Suchandra; Mandal, Kalyan

doi:10.1016/j.jmmm.2019.04.055

Cited by 23 publications

(13 citation statements)

References 17 publications

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“…Rheological properties of hollow Fe 3 O 4 spheres with different diameters were also studied. 20 The yield stress of submicron hollow spheres reached 4.39 times larger than that of small solid ones. Hollow Fe 3 O 4 also possessed lower density, higher saturation magnetization, and lower sedimentation rate.…”

Section: ■ Introductionmentioning

confidence: 96%

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Experiments and Simulations on the Magnetorheology of Magnetic Fluid Based on Fe₃O₄ Hollow Chains

Pei

Xuan

et al. 2019

Langmuir

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This work reports an experiment/simulation combination study on the magnetorheological (MR) mechanism of magnetic fluid based on Fe3O4 hollow chains. The decrease of shear stress versus the increasing magnetic field was observed in a dilute magnetic fluid. Hollow chains exhibited a higher MR effect than pure Fe3O4 hollow nanospheres under a small magnetic field. A modified particle level simulation method including the translational and rotational motion of chains was developed to comprehend the correlation between rheological properties and microstructures. Sloping cluster-like microstructures were formed under a weak external field (24 mT), while vertical column-like microstructures were observed under a strong field (240 mT). The decrease of shear stress was due to the strong reconstruction process of microstructures and the agglomeration of chains near the boundaries. The chain morphology increased the dip angle of microstructures and thus improved the MR effect under a weak field. This advantage made Fe3O4 hollow chains to be widely applied for small and low-power devices in the biomedical field. Dimensionless viscosity as a function of the Mason number was collapsed onto linear master curves. Magnetic fluid in Poiseuille flow in a microfluidic channel was also observed and simulated. A qualitative and quantitative correspondence between simulations and experiments was obtained.

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Section: ■ Introductionmentioning

confidence: 96%

“…The prepared hollow spheres presented excellent redispersibility, indicating good antisedimentation stability. Rheological properties of hollow Fe 3 O 4 spheres with different diameters were also studied . The yield stress of submicron hollow spheres reached 4.39 times larger than that of small solid ones.…”

Section: Introductionmentioning

confidence: 99%

Experiments and Simulations on the Magnetorheology of Magnetic Fluid Based on Fe₃O₄ Hollow Chains

Pei

Xuan

et al. 2019

Langmuir

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“…Among various ferromagnetic materials, magnetic nanoparticles (NPs) based on iron oxide have shown high magnetization saturation and small hysteresis values, which makes them a promising material for MR fluids (Espin et al 2005, Rabbani et al 2019. Despite the wide application of the micron-sized particles in classical MR fluids, recent studies show the high potential of nano-sized particles in MR fluid preparation (Chae et al 2015, Wu et al 2016, Saha et al, 2019.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the well-dispersed magnetorheological oil-based suspension with superparamagnetic nanoparticles using modified split Hopkinson pressure bar

et al. 2021

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Magnetorheological (MR) fluids are classified as smart materials whose viscoplastic characteristics change under the magnetic field. They are widely applied for dynamic energy dissipation due to their rapid thickening under the external magnetic field. In this work, the core–shell suspension of superparamagnetic iron oxide-based nanoparticles was synthesized and dispersed in silicone oil. Much effort has been made to prepare suspension meeting requirements of MR fluid. The experimental squeezing flow response was studied using a modified split Hopkinson pressure bar (SHPB) with various shear rates. Tests with modified SHPB show that MR fluid rapidly responds to the compression thickening and forming chain-like structures. MR fluid dissipates the energy generated during compression stress tests. This study presents a simple and cost-effective synthesis way suitable for MR fluid formation for its dynamic energy dissipation application.

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“…Fe-based nanoparticles (NPs) show remarkable interest in the scientific community for various applications such as biomedicine (hyperthermia 1 , targeted drug delivery 2 , computed tomography and magnetic resonance imaging contrast agents 3 , 4 ), catalysis 5 , 6 , magnetic fluids 7 , gas sensors 8 , high-density magnetic storages 9 , water treatment and environment protection 10 , 11 . For many technological applications, the Fe-based NPs are required to fulfill challenging demands such as narrow size distribution, crystallinity and stability in air.…”

Section: Introductionmentioning

confidence: 99%

Tuning structural and magnetic properties of Fe oxide nanoparticles by specific hydrogenation treatments

Greculeasa

Palade

Schinteie

et al. 2020

Sci Rep

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Structural and magnetic properties of Fe oxide nanoparticles prepared by laser pyrolysis and annealed in high pressure hydrogen atmosphere were investigated. The annealing treatments were performed at 200 °C (sample A200C) and 300 °C (sample A300C). The as prepared sample, A, consists of nanoparticles with ~ 4 nm mean particle size and contains C (~ 11 at.%), Fe and O. The Fe/O ratio is between γ-Fe2O3 and Fe3O4 stoichiometric ratios. A change in the oxidation state, crystallinity and particle size is evidenced for the nanoparticles in sample A200C. The Fe oxide nanoparticles are completely reduced in sample A300C to α-Fe single phase. The blocking temperature increases from 106 K in A to 110 K in A200C and above room temperature in A300C, where strong inter-particle interactions are evidenced. Magnetic parameters, of interest for applications, have been considerably varied by the specific hydrogenation treatments, in direct connection to the induced specific changes of particle size, crystallinity and phase composition. For the A and A200C samples, a field cooling dependent unidirectional anisotropy was observed especially at low temperatures, supporting the presence of nanoparticles with core–shell-like structures. Surprisingly high MS values, almost 50% higher than for bulk metallic Fe, were evidenced in sample A300C.

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Rheological response of magnetic fluid containing Fe3O4 nano structures

Cited by 23 publications

References 17 publications

Experiments and Simulations on the Magnetorheology of Magnetic Fluid Based on Fe₃O₄ Hollow Chains

Experiments and Simulations on the Magnetorheology of Magnetic Fluid Based on Fe₃O₄ Hollow Chains

Investigation of the well-dispersed magnetorheological oil-based suspension with superparamagnetic nanoparticles using modified split Hopkinson pressure bar

Tuning structural and magnetic properties of Fe oxide nanoparticles by specific hydrogenation treatments

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Rheological response of magnetic fluid containing Fe3O4 nano structures

Cited by 23 publications

References 17 publications

Experiments and Simulations on the Magnetorheology of Magnetic Fluid Based on Fe3O4 Hollow Chains

Experiments and Simulations on the Magnetorheology of Magnetic Fluid Based on Fe3O4 Hollow Chains

Investigation of the well-dispersed magnetorheological oil-based suspension with superparamagnetic nanoparticles using modified split Hopkinson pressure bar

Tuning structural and magnetic properties of Fe oxide nanoparticles by specific hydrogenation treatments

Contact Info

Product

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Experiments and Simulations on the Magnetorheology of Magnetic Fluid Based on Fe₃O₄ Hollow Chains

Experiments and Simulations on the Magnetorheology of Magnetic Fluid Based on Fe₃O₄ Hollow Chains