Results 11 to 20 of about 8,758 (198)

Magnetic Domain Texture in Fe<sub>3</sub>O<sub>4</sub> Thin Films on SiO<sub>2</sub> Nanospheres. [PDF]

open access: yesAdv Mater
Fe3O4 thin films grown on ordered SiO2 nanospheres form curved nanocaps with 3D geometry, inducing magnetic domain texture. X‐ray spectromicroscopy (XMCD‐PEEM), cross‐sectional electron microscopy (STEM), and polarized grazing‐incidence small‐angle neutron scattering (GISANS) reveal how topography modulates magnetization.
Hamed MH   +14 more
europepmc   +2 more sources

Fabrication of Mn1-xZnxFe2O4 ferrofluids from natural sand for magnetic sensors and radar absorbing materials

open access: yesHeliyon, 2020
Mn1-xZnxFe2O4 ferrofluids were produced from natural sand for magnetic sensors and radar absorbing materials. The X-ray diffraction data showed that the Zn partially substituted the Mn and Fe ions to construct a spinel structure.
Ahmad Taufiq   +8 more
doaj   +1 more source

The effect of ions doping on the rheological properties of ferrite ferrofluids

open access: yesFrontiers in Materials, 2023
A series of ferrite nanoparticles were synthesized via ion doping and then were coated by surfactant and dispersed in perfluorinated polyether oil (PFPE-oil), and the various ferrite ferrofluids were obtained. The scanning electron microscope was used to
Fang Chen   +6 more
doaj   +1 more source

The Investigation of Mixed Ferrofluids Containing Iron Oxide nanoparticles and Microspheres

open access: yesAdvances in Materials Science and Engineering, 2021
The aim of the present work is the synthesis and characterization of iron oxide (Fe3O4) nanoparticles. These nanoparticles are coated with oleic acid and polyvinyl butyral and mixed with microspheres and further developed ferrofluids with silicon oil ...
Sharanabasava V. Ganachari   +10 more
doaj   +1 more source

Numerical Simulation Study of Tracking the Displacement Fronts and Enhancing Oil Recovery Based on Ferrofluid Flooding

open access: yesFrontiers in Earth Science, 2021
Water flooding is crucial means to improve oil recovery after primary production. However, the utilization ratio of injected water is often seriously affected by heterogeneities in the reservoir.
Tao Huang   +3 more
doaj   +1 more source

Ferrofluids and bio-ferrofluids: looking back and stepping forward

open access: yesNanoscale, 2022
Ferrofluids investigated along for about five decades are ultrastable colloidal suspensions of magnetic nanoparticles, which manifest simultaneously fluid and magnetic properties.
V. Socoliuc   +5 more
openaire   +3 more sources

Ferrofluid Leidenfrost droplets [PDF]

open access: yesSoft Matter, 2019
We experimentally investigate the behavior of ferrofluid Leidenfrost droplets subject to a magnetic field gradient. As a droplet evaporates, it experiences a bouncing instability and finally takes off when its radius reaches a critical value.
Christophe D'Angelo   +3 more
openaire   +2 more sources

Pattern formation in quantum ferrofluids: From supersolids to superglasses

open access: yesPhysical Review Research, 2021
Pattern formation is a ubiquitous phenomenon observed in nonlinear and out-of-equilibrium systems. In equilibrium, quantum ferrofluids formed from ultracold atoms were recently shown to spontaneously develop coherent density patterns, manifesting a ...
J. Hertkorn   +9 more
doaj   +1 more source

Synthesis of Fe3O4/Ag nanohybrid ferrofluids and their applications as antimicrobial and antifibrotic agents

open access: yesHeliyon, 2020
To date, the search for creating stable ferrofluids with excellent properties for biomedical application is one of the challenging scientific and practical investigations.
Ahmad Taufiq   +8 more
doaj   +1 more source

Rheology of Aqueous Ferrofluids: Transition from a Gel-Like Character to a Liquid Character in High Magnetic Fields

open access: yesChemEngineering, 2023
Rheological measurements under an applied magnetic field were used to investigate the changes to the internal structure and stability of an aqueous ferrofluid. The ferrofluid was prepared by dispersing 1.8 wt.% of maghemite nanoparticles with a size of d
Stanislav Čampelj
doaj   +1 more source

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