magnetic agglomeration

magnetic agglomeration

Reversible Magnetic Agglomeration: A Mechanism for ...

2018-3-24 · We present a method for the synthesis and precise size control of magnetic nanoparticles in a reversible magnetic agglomeration mechanism. In this approach, nanoparticles nucleate and grow until a critical susceptibility is reached, in which magnetic attraction overcomes dispersive forces, leading to agglomeration and precipitation.

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Magnetic agglomeration method for size control in the ...

2011-7-5 · @article{osti_1021904, title = {Magnetic agglomeration method for size control in the synthesis of magnetic nanoparticles}, author = {Huber, Dale L}, abstractNote = {A method for controlling the size of chemically synthesized magnetic nanoparticles that employs magnetic interaction between particles to control particle size and does not rely on conventional kinetic

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Reversible Magnetic Agglomeration: A Mechanism for ...

We present a method for the synthesis and precise size control of magnetic nanoparticles in a reversible magnetic agglomeration mechanism. In this approach, nanoparticles nucleate and grow until a critical susceptibility is reached, in which magnetic attraction overcomes dispersive forces, leading to agglomeration and precipitation.

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Nanoparticle Size Threshold for Magnetic Agglomeration

2021-9-30 · The likelihood of magnetic nanoparticles to agglomerate is usually estimated through the ratio between magnetic dipole-dipole and thermal energies, thus neglecting the fact that, depending on the magnitude of the magnetic anisotropy constant (K), the particle moment may fluctuate internally and thus undermine the agglomeration process. Based on the comparison

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Aggregation effects on the magnetic properties of iron ...

2019-1-22 · Finally, the influence of agglomeration on magnetic properties and heating efficiency have been studied through changes in the pH or the salt content of the medium, which affects the colloidal stability of nanoparticle dispersions and can be controlled, to some extent, in order to prepare agglomerates of defined average sizes [45, 53]. Inter ...

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Self-Assembly-Magnetized MXene Avoid Dual

Moreover, dynamic magnetic response of the magnetized MXene absorber was first researched by the electron holography analysis. The related key mechanism includes the enhanced magnetic loss, less dual-agglomeration (multilayer MXene itself and magnetic agglomeration), and more interfaces and intrinsic defects for related polarization.

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Agglomeration - an overview | ScienceDirect Topics

Saeid Ghavami, in Magnetic Nanomaterials in Analytical Chemistry, 2021. 4.6 Long-term behavior of MNPs. The agglomeration of MNPs, which may lead to deactivation, is a serious challenge in the application of these materials. It is a time-dependent process in which individually dispersed particles aggregate into a large cluster.

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Improved Magneto-Microfluidic Separation of

2021-12-2 · Molecular adsorption to the nanoparticle surface may switch the colloidal interactions from repulsive to attractive and promote nanoparticle agglomeration. If the nanoparticles are magnetic, then their agglomerates exhibit a much stronger response to external magnetic fields than individual nanoparticles. Coupling between adsorption, agglomeration, and magnetism

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Particle Agglomeration - an overview | ScienceDirect Topics

Particle Agglomeration. Moreover, particle agglomeration and design of air-cleaning devices have been modelled by the constructal theory (Reis et al., 2006), and the dendritic geometry has been predicted along with the existence of asymmetric bifurcation (Wechsatol et al., 2006).

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磁凝聚,magnetic agglomeration,在线英语词典,英文翻译,专业

2018-10-1 · The application of magnetic technologies, such as magnetic electrolysis, magnetic separation and magnetic agglomeration, in industrial wastewater treatment are introduced, and their principals and recent research situation,as well as their merits and demerits,and their development prospects are also described.

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Magnetic-field-induced agglomeration in the magnetic

A method for suppressing the field-induced agglomeration of magnetic particles in a magnetic fluid is proposed. After the magnetic fluid is doped with silica particles, the agglomeration effect is weakened. The optical properties of this system are analyzed. With this method, the quality of magnetic-fluid-based optical devices might be improved.

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Effect of agglomeration of magnetic nanoparticles on the ...

2019-7-16 · The impact of agglomeration of magnetic nanoparticles on the Casimir pressure is investigated in the configuration of two material plates and a layer of ferrofluid confined between them. Both cases of similar and dissimilar plates are considered in the framework of the Lifshitz theory of dispersion forces. It is shown that for two dielectric (${\mathrm{SiO}}_{2}$) plates, as

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Nanoparticle size threshold for magnetic agglomeration

2020-11-18 · arXivLabs is a framework that allows collaborators to develop and share new arXiv features directly on our website. Both individuals and organizations that work with arXivLabs have embraced and accepted our values of openness, community, excellence, and user data privacy. arXiv is committed to these values and only works with partners that adhere to them.

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Agglomeration - an overview | ScienceDirect Topics

Saeid Ghavami, in Magnetic Nanomaterials in Analytical Chemistry, 2021. 4.6 Long-term behavior of MNPs. The agglomeration of MNPs, which may lead to deactivation, is a serious challenge in the application of these materials. It is a time-dependent process in which individually dispersed particles aggregate into a large cluster.

Read More
Reversible magnetism switching of iron oxide nanoparticle ...

The controlled agglomeration of superparamagnetic iron oxide nanoparticles (SPIONs) was used to rapidly switch their magnetic properties. Small-angle X-ray scattering (SAXS) and dynamic light scattering showed that tailored iron oxide nanoparticles with phase-changing organic ligand shells agglomerate at temperatures between 5 °C and 20 °C.

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Particle Agglomeration - an overview | ScienceDirect Topics

Particle Agglomeration. Moreover, particle agglomeration and design of air-cleaning devices have been modelled by the constructal theory (Reis et al., 2006), and the dendritic geometry has been predicted along with the existence of asymmetric bifurcation (Wechsatol et al., 2006).

Read More
The agglomeration, coalescence and sliding of ...

2017-5-31 · Conventional sintering is a time- and energy-consuming process used for the densification of consolidated particles facilitated by atomic diffusion at high temperatures. Nanoparticles, with their ...

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Soft magnetic skin for super-resolution tactile sensing ...

To avoid agglomeration, the NdFeB magnetic powders were first dispersed in an organic solvent, heptane, via high-frequency ultrasonic agitation, and then, the PDMS base monomer was added into the mixture of NdFeB powers + heptane and mixed thoroughly at 2000 rpm in a

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杨良嵘-中国科学院大学-UCAS

(65) Fabrication of Biocompatible, Temperature- and pH- Responsive Magnetic Nanoparticles and Study of Their Reversible Agglomeration in Aqueous Milieu, Industrial and Engineering Chemistry Research, 2010, 第 1 作者

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磁凝聚,magnetic agglomeration,在线英语词典,英文翻译,专业

2018-10-1 · The application of magnetic technologies, such as magnetic electrolysis, magnetic separation and magnetic agglomeration, in industrial wastewater treatment are introduced, and their principals and recent research situation,as well as their merits and demerits,and their development prospects are also described.

Read More
Magnetic-field-induced agglomeration in the magnetic

A method for suppressing the field-induced agglomeration of magnetic particles in a magnetic fluid is proposed. After the magnetic fluid is doped with silica particles, the agglomeration effect is weakened. The optical properties of this system are analyzed. With this method, the quality of magnetic-fluid-based optical devices might be improved.

Read More
Effect of agglomeration of magnetic nanoparticles on the ...

2019-7-16 · The impact of agglomeration of magnetic nanoparticles on the Casimir pressure is investigated in the configuration of two material plates and a layer of ferrofluid confined between them. Both cases of similar and dissimilar plates are considered in the framework of the Lifshitz theory of dispersion forces. It is shown that for two dielectric (${\mathrm{SiO}}_{2}$) plates, as

Read More
Agglomeration response of nanoparticles in magnetic

2011-3-4 · that, for a given magnetic field, the transmittance would decrease by increasing the volume fraction. Under an applied magnetic field, the variation of transmittance is mainly dependent on the area cov-ered by the droplets of emulsions in the MF film. In other words, a higher volume fraction leads to a greater agglomeration of particles.

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Effect of magnetic seeding agglomeration on flotation of

2019-1-1 · Abstract:Magnetic seeding agglomeration (MSA), i.e., adding magnetic seeds and a low intensity pre-magnetization for fine agglomeration, was applied to the flotation of coal, pyrite and hematite ore slimes. Size analysis and flotation tests highlight that the MSA improved flotation recovery and kinetics of pyrite ore while causing some loss in ...

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Agglomeration - an overview | ScienceDirect Topics

Saeid Ghavami, in Magnetic Nanomaterials in Analytical Chemistry, 2021. 4.6 Long-term behavior of MNPs. The agglomeration of MNPs, which may lead to deactivation, is a serious challenge in the application of these materials. It is a time-dependent process in which individually dispersed particles aggregate into a large cluster.

Read More
Nanoparticle size threshold for magnetic agglomeration

2020-11-18 · arXivLabs is a framework that allows collaborators to develop and share new arXiv features directly on our website. Both individuals and organizations that work with arXivLabs have embraced and accepted our values of openness, community, excellence, and user data privacy. arXiv is committed to these values and only works with partners that adhere to them.

Read More
The agglomeration, coalescence and sliding of ...

2017-5-31 · Conventional sintering is a time- and energy-consuming process used for the densification of consolidated particles facilitated by atomic diffusion at high temperatures. Nanoparticles, with their ...

Read More
Soft magnetic skin for super-resolution tactile sensing ...

To avoid agglomeration, the NdFeB magnetic powders were first dispersed in an organic solvent, heptane, via high-frequency ultrasonic agitation, and then, the PDMS base monomer was added into the mixture of NdFeB powers + heptane and mixed thoroughly at 2000 rpm in a

Read More
杨良嵘-中国科学院大学-UCAS

(65) Fabrication of Biocompatible, Temperature- and pH- Responsive Magnetic Nanoparticles and Study of Their Reversible Agglomeration in Aqueous Milieu, Industrial and Engineering Chemistry Research, 2010, 第 1 作者

Read More