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Field-Cycling Proton Nuclear Magnetic Relaxation-Dispersion Study of Aqueous Colloidal Silica Sols

Journal of Magnetic Resonance, Series A, 1995
Abstract The magnetic-field dependence of the water-proton spin-lattice relaxation rate 1/ T 1 is reported for aqueous colloidal silica suspensions as a function of temperature, particle size, silica concentration, and isotopical proton dilution.
Roose, Patrice   +3 more
openaire   +3 more sources

Comparative study of optical properties by clay minerals with magnetic coating in colloidal dispersion under an external magnetic field

Applied Clay Science, 2019
Abstract In this paper, representative nanoscale clay minerals@Fe3O4 nanocomposites (palygorskite@Fe3O4 nanorods, sepiolite@Fe3O4 nanowires and montmorillonite@Fe3O4 nanosheets) have been used as building blocks to prepare stable colloid solutions-. All of them produce a similar magnetically controlled liquid crystal with Bragg diffraction under an ...
Meng Fu, Xiangming Li, Zepeng Zhang
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Quasi-2D Monte Carlo simulations of a colloidal dispersion composed of magnetic plate-like particles with magnetic moment normal to the particle axis

Molecular Physics, 2008
We have investigated aggregation phenomena of a colloidal dispersion composed of magnetic plate-like particles by means of Monte Carlo simulations. Such plate-like particles have been modeled as disk-like particles which have a magnetic moment normal to the particle axis at the particle center, with the section shape of a spherocylinder.
Akira Satoh, Yasuhiro Sakuda
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Preparation and characterization of narrow-dispersed magnetic colloidal nanoparticle cluster/silica microspheres with controlled sizes, high saturation magnetization and MRI enhancement effect

Journal of Materials Chemistry B, 2013
A comprehensive method combining polymerization-induced colloid aggregation, silica coating, and high-temperature calcination is developed for the preparation of micro-sized magnetic colloidal nanoparticle cluster/silica (CNC/silica) microspheres.
Yan, Li   +8 more
openaire   +2 more sources

Colloidal Interactions in Low-polarity Dispersions of Permanently Magnetic Nanoplatelets

Ferrofluids based on permanently magnetic nanoplatelets are attractive functional materials. However, their preparation in low-polarity media is particularly challenging because magnetic dipole–dipole interactions strongly promote agglomeration while conventional electrostatic stabilisation is weakened.
Jošt Tručl   +5 more
openaire   +1 more source

Non-equilibrium magnetic colloidal dispersions at liquid–air interfaces: dynamic patterns, magnetic order and self-assembled swimmers

Journal of Physics: Condensed Matter, 2011
Colloidal dispersions of interacting particles subjected to an external periodic forcing often develop nontrivial self-assembled patterns and complex collective behavior. A fundamental issue is how collective ordering in such non-equilibrium systems arises from the dynamics of discrete interacting components. In addition, from a practical viewpoint, by
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Adsorption behavior of macromolecules on colloidal magnetic oxide particles: interfacial interaction and dispersion characteristics

Progress in Organic Coatings, 1991
Abstract Adsorption isotherms of nitrocellulose, polyurethane and phenoxy binder resins as well as organic phosphate and lecithin dispersants on colloidal magnetic particles in nonaqueous solutions have been determined by spectroscopic studies. Nitrocellulose and polyurethane exhibited adsorption behaviors which were very different from those of the ...
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Magnetic Effects on the Diffusion of Ferromagnetic Colloidal Particles Dispersed in a Current-Carrying Fluid Medium

Physical Review, 1966
Magnetic effects on diffusion of ferromagnetic colloidal particles dispersed in current-carrying fluid medium, noting force effects on relaxation ...
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Thermodynamic Structure Formation in Colloidal Dispersions of Single-domain Magnetic Nanoparticles

Dipolar structure formation in liquid dispersions of single-domain magnetite colloids is reviewed and reexamined, both for the pair formation (‘dimerization’) that occurs in dilute fluids of weakly magnetic particles, as well as the string and dipolar chain formation that spontaneously occurs for particles with a dipolar coupling constant that exceeds ...
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G219 Rheological characteristics of a magnetic colloidal disperse system

Proceedings of thermal engineering conference, 2001
Hisao MORIMOTO, Toru MAEKAWA
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