Recent progress in ferrofluids research: novel applications of magnetically controllable and tunable fluids

Torres‐Díaz, Isaac; Rinaldi, Carlos

doi:10.1039/c4sm01308e

Cited by 274 publications

(165 citation statements)

References 206 publications

(217 reference statements)

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“…To get the real ferrofluid the iron(II,III)oxide has to be suspended in heptane or light gasoline. The newest applications are in the medical sector [23]. Ferrofluid is used in the imaging of magnetic resonance examinations.…”

Section: Nanochemistry Based On Acid-basereactionmentioning

confidence: 99%

Nanochemistry - A Split between 18th Century and Modern Times

Heinzerling¹,

Oetken²

2018

WJCE

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Nanoscience seems to be a main topic of this century. The chemical fundamentals are very old and named colloids since Graham in 1861. The acronym nano has been introduced in 1960 at a conference of measures and weights in Paris. In 1982 Binnig and Rohrer invented the scanning tunnel microscope(STM) and four years later Binnig the atomic force microscope(AFM). These microscopes are the main tools for the nanotechnology and from this times the number of publications exploded. In this article we'll focus on the chemical aspects of nanotechnology and how to implement experiments into school. Keywords: nanochemistry, history, colloids, fundamental reaction principles, experimentsCite This Article: P. Heinzerling, and M. Oetken, "Nanochemistry -A Split between 18th Century and Modern Times

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Section: Nanochemistry Based On Acid-basereactionmentioning

confidence: 99%

Nanochemistry - A Split between 18th Century and Modern Times

Heinzerling¹,

Oetken²

2018

WJCE

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“…Ferrofluids are materials designed so that a remotely applied magnetic field may drive flow, manipulate a surface or interface or control the fluid's physical properties [1,2]. Among the most significant capabilities is magnetically-induced changes in the rheology of the fluid, historically referred to as magnetoviscosity (cf., e.g., [3]).…”

Section: Introductionmentioning

confidence: 99%

Flow Anisotropy due to Thread-Like Nanoparticle Agglomerations in Dilute Ferrofluids

Cali

Lee

Trubatch

et al. 2017

Fluids

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Improved knowledge of the magnetic field dependent flow properties of nanoparticle-based magnetic fluids is critical to the design of biomedical applications, including drug delivery and cell sorting. To probe the rheology of ferrofluid on a sub-millimeter scale, we examine the paths of 550 µm diameter glass spheres falling due to gravity in dilute ferrofluid, imposing a uniform magnetic field at an angle with respect to the vertical. Visualization of the spheres' trajectories is achieved using high resolution X-ray phase-contrast imaging, allowing measurement of a terminal velocity while simultaneously revealing the formation of an array of long thread-like accumulations of magnetic nanoparticles. Drag on the sphere is largest when the applied field is normal to the path of the falling sphere, and smallest when the field and trajectory are aligned. A Stokes drag-based analysis is performed to extract an empirical tensorial viscosity from the data. We propose an approximate physical model for the observed anisotropic drag, based on the resistive force theory drag acting on a fixed non-interacting array of slender threads, aligned parallel to the magnetic field.

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“…The present-day interest to these systems is also associated with their prospects in actively developing medical applications such as drug targeting, magnetic resonance imaging (contrast medium), magnetic hyperthermia for cancer treatment, etc. [1,2]. For this purpose, many efforts are concentrated to the synthesis of highly stable, reproducible and controllable water-based ferrofluids.…”

Section: Introductionmentioning

confidence: 99%

Crystalisation of aqueous ferrofluids at the free liquid interface investigated by specular and off-specular x-ray reflectometry

Gapon

Петренко

Soltwedel

et al. 2018

J. Phys.: Conf. Ser.

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Abstract. Structural organization of nanoparticles from aqueous ferrofluids on free liquid surface was studied by X-ray reflectometry. The observed layered structure at interface is associated with the evaporation of the solvent. By orienting an external magnetic during evaporation of the aqueos ferrofluids their structural organization can be manipulated. For a magnetic field applied perpendicular to the surface a more pronounced ordering along the surface normal is observed as in the case of a parallel field. Independent on the orientation of the magantic field a ∼ 20 µm thick surface layer of depleted nanoparticle concentration is found at the interface.

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Recent progress in ferrofluids research: novel applications of magnetically controllable and tunable fluids

Cited by 274 publications

References 206 publications

Nanochemistry - A Split between 18th Century and Modern Times

Nanochemistry - A Split between 18th Century and Modern Times

Flow Anisotropy due to Thread-Like Nanoparticle Agglomerations in Dilute Ferrofluids

Crystalisation of aqueous ferrofluids at the free liquid interface investigated by specular and off-specular x-ray reflectometry

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